Samson TXM20 User manual

Powered Mixers
1000 WATT POWERED MIXERS
WITH 24BIT DIGITAL EFFECTS

Safety Instructions/Consignes de sécurité/Sicherheitsvorkehrungen
ACHTUNG: Um die Gefahr eines Brandes oder Stromschlags zu verringern, sollten Sie dieses Gerät weder Regen noch Feuchtigkeit aussetzen.Um die Gefahr eines
Stromschlags zu verringern, sollten Sie weder Deckel noch Rückwand des Geräts entfernen. Im Innern befinden sich keine Teile, die vom Anwender gewartet
werden können. Überlassen Sie die Wartung qualifiziertem Fachpersonal.Der Blitz mit Pfeilspitze im gleichseitigen Dreieck soll den Anwender vor nichtisolierter
“gefährlicher Spannung”im Geräteinnern warnen. Diese Spannung kann so hoch sein, dass die Gefahr eines Stromschlags besteht. Das Ausrufezeichen im gleich-
seitigen Dreieck soll den Anwender auf wichtige Bedienungs- und Wartungsanleitungen aufmerksam machen, die im mitgelieferten Informationsmaterial näher
beschrieben werden.
Wichtige Sicherheitsvorkehrungen
1. Lesen Sie alle Anleitungen, bevor Sie das Gerät in Betrieb nehmen.
2. Bewahren Sie diese Anleitungen für den späteren Gebrauch gut auf.
3. Bitte treffen Sie alle beschriebenen Sicherheitsvorkehrungen.
4. Befolgen Sie die Anleitungen des Herstellers.
5. Benutzen Sie das Gerät nicht in der Nähe von Wasser oder Feuchtigkeit.
6. Verwenden Sie zur Reinigung des Geräts nur ein feuchtes Tuch.
7. Blockieren Sie keine Belüftungsöffnungen. Nehmen Sie den Einbau des Geräts nur entsprechend den Anweisungen des Herstellers vor.
8. Bauen Sie das Gerät nicht in der Nähe von Wärmequellen wie Heizkörpern, Wärmeklappen, Öfen oder anderen Geräten (inklusive Verstärkern) ein, die Hitze
erzeugen.
9. Setzen Sie die Sicherheitsfunktion des polarisierten oder geerdeten Steckers nicht außer Kraft. Ein polarisierter Stecker hat zwei flache, unterschiedlich breite
Pole. Ein geerdeter Stecker hat zwei flache Pole und einen dritten Erdungsstift. Der breitere Pol oder der dritte Stift dient Ihrer Sicherheit. Wenn der vorhan-
dene Stecker nicht in Ihre Steckdose passt, lassen Sie die veraltete Steckdose von einem Elektriker ersetzen.
10. Schützen Sie das Netzkabel dahingehend, dass niemand darüber laufen und es nicht geknickt werden kann. Achten Sie hierbei besonders auf Netzstecker,
Mehrfachsteckdosen und den Kabelanschluss am Gerät.
11. Ziehen Sie den Netzstecker des Geräts bei Gewittern oder längeren Betriebspausen aus der Steckdose.
12. Überlassen Sie die Wartung qualifiziertem Fachpersonal. Eine Wartung ist notwendig, wenn das Gerät auf irgendeine Weise, beispielsweise am Kabel oder
Netzstecker beschädigt wurde, oder wenn Flüssigkeiten oder Objekte in das Gerät gelangt sind, es Regen oder Feuchtigkeit ausgesetzt war, nicht mehr wie
gewohnt betrieben werden kann oder fallen gelassen wurde.
WARNING: To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture. To reduce the hazard of electrical shock, do not remove cover or
back. No user serviceable parts inside. Please refer all servicing to qualified personnel.The lightning flash with an arrowhead symbol within an equilateral triangle,
is intended to alert the user to the presence of uninsulated "dangerous voltage" within the products enclosure that may be of sufficient magnitude to constitute
a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the product.
Important Safety Instructions
1. Please read all instructions before operating the unit.
2. Keep these instructions for future reference.
3. Please heed all safety warnings.
4. Follow manufacturers instructions.
5. Do not use this unit near water or moisture.
6. Clean only with a damp cloth.
7. Do not block any of the ventilation openings. Install in accordance with the manufacturers instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or third prong is provided for your safety. When the provided plug does not fit your outlet,
consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on and pinched particularly at plugs, convenience receptacles and at the point at which they exit from the unit.
11. Unplug this unit during lightning storms or when unused for long periods of time.
12. Refer all servicing to qualified personnel. Servicing is required when the unit has been damaged in any way, such as power supply cord or plug damage, or if
liquid has been spilled or objects have fallen into the unit, the unit has been exposed to rain or moisture, does not operate normally, or has been dropped.
ATTENTION: Pour éviter tout risque d’électrocution ou d’incendie, ne pas exposer cet appareil à la pluie ou à l’humidité. Pour éviter tout risque d’électrocution, ne
pas ôter le couvercle ou le dos du boîtier. Cet appareil ne contient aucune pièce remplaçable par l'utilisateur. Confiez toutes les réparations à un personnel qualifié.
Le signe avec un éclair dans un triangle prévient l’utilisateur de la présence d’une tension dangereuse et non isolée dans l’appareil. Cette tension constitue un
risque d’électrocution. Le signe avec un point d’exclamation dans un triangle prévient l’utilisateur d’instructions importantes relatives à l’utilisation et à la mainte-
nance du produit.
Consignes de sécurité importantes
1. Veuillez lire toutes les instructions avant d’utiliser l’appareil.
2. Conserver ces instructions pour toute lecture ultérieure.
3. Lisez avec attention toutes les consignes de sécurité.
4. Suivez les instructions du fabricant.
5. Ne pas utiliser cet appareil près d’une source liquide ou dans un lieu humide.
6. Nettoyez l’appareil uniquement avec un tissu humide.
7. Veillez à ne pas obstruer les fentes prévues pour la ventilation de l’appareil. Installez l’appareil selon les instructions du fabricant.
8. Ne pas installer près d’une source de chaleur (radiateurs, etc.) ou de tout équipement susceptible de générer de la chaleur (amplificateurs de puissance par
exemple).
9. Ne pas retirer la terre du cordon secteur ou de la prise murale. Les fiches canadiennes avec polarisation (avec une lame plus large) ne doivent pas être modi-
fiées. Si votre prise murale ne correspond pas au modèle fourni, consultez votre électricien.
10. Protégez le cordon secteur contre tous les dommages possibles (pincement, tension, torsion,, etc.). Veillez à ce que le cordon secteur soit libre, en particulier à
sa sortie du boîtier.
11. Déconnectez l’appareil du secteur en présence d’orage ou lors de périodes d’inutilisation prolongées.
12. Consultez un service de réparation qualifié pour tout dysfonctionnement (dommage sur le cordon secteur, baisse de performances, exposition à la pluie, pro-
jection liquide dans l’appareil, introduction d’un objet dans le boîtier, etc.).

PRECAUCION: Para reducir el riesgo de incendios o descargas, no permita que este aparato quede expuesto a la lluvia o la humedad. Para reducir el riesgo de
descarga eléctrica, nunca quite la tapa ni el chasis. Dentro del aparato no hay piezas susceptibles de ser reparadas por el usuario. Dirija cualquier reparación al
servicio técnico oficial. El símbolo del relámpago dentro del triángulo equilátero pretende advertir al usuario de la presencia de “voltajes peligrosos”no aislados
dentro de la carcasa del producto, que pueden ser de la magnitud suficiente como para constituir un riesgo de descarga eléctrica a las personas. El símbolo de
exclamación dentro del triángulo equilátero quiere advertirle de la existencia de importantes instrucciones de manejo y mantenimiento (reparaciones) en los
documentos que se adjuntan con este aparato.
Instrucciones importantes de seguridad
1. Lea todo este manual de instrucciones antes de comenzar a usar la unidad.
2. Conserve estas instrucciones para cualquier consulta en el futuro.
3. Cumpla con todo lo indicado en las precauciones de seguridad.
4. Observe y siga todas las instrucciones del fabricante.
5. Nunca utilice este aparato cerca del agua o en lugares húmedos.
6. Limpie este aparato solo con un trapo suave y ligeramente humedecido.
7. No bloquee ninguna de las aberturas de ventilación. Instale este aparato de acuerdo a las instrucciones del fabricante.
8. No instale este aparato cerca de fuentes de calor como radiadores, calentadores, hornos u otros aparatos (incluyendo amplificadores) que produzcan calor.
9. No anule el sistema de seguridad del enchufe de tipo polarizado o con toma de tierra. Un enchufe polarizado tiene dos bornes, uno más ancho que el otro.
Uno con toma de tierra tiene dos bornes normales y un tercero para la conexión a tierra. El borne ancho o el tercero se incluyen como medida de seguridad.
Cuando el enchufe no encaje en su salida de corriente, llame a un electricista para que le cambie su salida anticuada.
10. Evite que el cable de corriente quede en una posición en la que pueda ser pisado o aplastado, especialmente en los enchufes, receptáculos y en el punto en
el que salen de la unidad.
11. Desconecte de la corriente este aparato durante las tormentas eléctricas o cuando no lo vaya a usar durante un periodo de tiempo largo.
12. Dirija cualquier posible reparación solo al servicio técnico oficial. Deberá hacer que su aparato sea reparado cuando esté dañado de alguna forma, como si
el cable de corriente o el enchufe están dañados, o si se han derramado líquidos o se ha introducido algún objeto dentro de la unidad, si esta ha quedado
expuesta a la lluvia o la humedad, si no funciona normalmente o si ha caído al suelo.
Instrucciones de seguridad / Istruzioni di Sicurezza
ATTENZIONE: per ridurre il rischio di incendio o di scariche elettriche, non esponete questo apparecchio a pioggia o umidità. Per ridurre il pericolo di scariche
elettriche evitate di rimuoverne il coperchio o il pannello posteriore. Non esistono all'interno dell'apparecchio parti la cui regolazione è a cura dell'utente. Per even-
tuale assistenza, fate riferimento esclusivamente a personale qualificato. Il fulmine con la punta a freccia all'interno di un triangolo equilatero avvisa l'utente della
presenza di "tensioni pericolose" non isolate all'interno dell'apparecchio, tali da costituire un possibile rischio di scariche elettriche dannose per le persone. Il punto
esclamativo all'interno di un triangolo equilatero avvisa l'utente della presenza di importanti istruzioni di manutenzione (assistenza) nella documentazione che
accompagna il prodotto.
Importanti Istruzioni di Sicurezza
1. Prima di usare l'apparecchio, vi preghiamo di leggerne per intero le istruzioni.
2. Conservate tali istruzioni per una eventuale consultazione futura.
3. Vi preghiamo di rispettare tutte le istruzioni di sicurezza.
4. Seguite tutte le istruzioni del costruttore.
5. Non usate questo apparecchio vicino ad acqua o umidità.
6. Pulite l'apparecchio esclusivamente con un panno asciutto.
7. Evitate di ostruire una qualsiasi delle aperture di ventilazione. Posizionatelo seguendo le istruzioni del costruttore.
8.
Non posizionatelo vicino a sorgenti di calore come radiatori, scambiatori di calore, forni o altri apparecchi (amplificatori compresi) in grado di generare calore.
9. Non disattivate la protezione di sicurezza costituita dalla spina polarizzata o dotata di collegamento a terra. Una spina polarizzata è dotata di due spinotti, uno
più piccolo ed uno più grande. Una spina dotata di collegamento a terra è dotata di due spinotti più un terzo spinotto di collegamento a terra. Questo terzo
spinotto, eventualmente anche più grande, viene fornito per la vostra sicurezza. Se la spina fornita in dotazione non si adatta alla vostra presa, consultate un
elettricista per la sostituzione della presa obsoleta.
10. Proteggete il cavo di alimentazione in modo che non sia possibile camminarci sopra né piegarlo, con particolare attenzione alle prese, ai punti di collegamento
e al punto in cui esce dall'apparecchio.
11. Staccate l'apparecchio dalla alimentazione in caso di temporali o tempeste o se non lo usate per un lungo periodo.
12. Per l'assistenza, fate riferimento esclusivamente a personale qualificato. È necessaria l'assistenza se l'apparecchio ha subito un qualsiasi tipo di danno, come
danni al cavo o alla spina di alimentazione, nel caso in cui sia stato versato del liquido o siano caduti oggetti al suo interno, sia stato esposto a pioggia o
umidità, non funzioni correttamente o sia stato fatto cadere.
Copyright 2006-2007 - Samson Technologies Corp.
Printed JAnuary, 2007 v3.0
Samson Technologies Corp.
45 Gilpin Avenue
Hauppauge, New York 11788-8816
Phone: 1-800-3-SAMSON (1-800-372-6766)
Fax: [phone]
www.samsontech.com

ENGLISH
Introduction..............................................................1
TXM16andTXM20Features...............................................2
ControlsandFunctions....................................................3
MONOINPUTCHANNELSECTION .........................................3
STEREOINPUTCHANNELSECTION.........................................5
24BITDIGITALEFFECTSECTION...........................................7
Stereo Line Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
38-AUX1-controlknob..................................................9
MasterAuxiliarySendSection.............................................9
PHONESandCD/TAPEINSection.........................................10
MONO/SUBWOOFEROutputSection .....................................10
MAINOutputSection ....................................................11
POWERAMPSECTION....................................................12
TXM16 and TXM20 Input and Output Connections . . . . . . . . . . . . . . . . . . . . . . . .14
REARPANEL .............................................................16
SPEAKERCONNECTION ..................................................17
Operating the TXM16 and TXM20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
USINGTHEDIGITALEFFECTS .............................................19
SENDING AN INDEPENDENT MIX TO THE MONITOR SPEAKERS . . . . . . . . . . . . .19
USINGANEXTERNALEFFECT.............................................20
RECORDING YOUR PERFORMANCE FROM THE TXM16 and TXM20. . . . . . . . . .21
Using the MONO OUTPUT to Drive a Subwoofer System. . . . . . . . . . . . . . . . . . .21
TXM16 and TXM20 System Set-Ups .......................................22
TXM16andTXM20WiringGuide .........................................24
Specifications.......................................................... 121
BlockDiagram......................................................... 126
FRANÇAIS
Introduction.............................................................25
TXM16 et TXM20 - Caractéristiques générales. . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Réglagesetfonctions....................................................27
SECTIONDESVOIESD'ENTRÉEMONO.....................................27
SECTIONDESVOIESD'ENTRÉESTÉRÉO....................................29
SECTION DES EFFETS NUMÉRIQUES 24 BITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Entréelignestéréo.......................................................33
38-BoutonAUX1 .......................................................33
Sectiondudépartauxiliairegénéral......................................33
Section de l'embase casque PHONES et de l'entrée CD/TAPE IN . . . . . . . . . . . .34
45-BoutonPHONES.....................................................34
SectiondelasortieMONO/SUBWOOFER..................................34
Sectiondesortieprincipale ..............................................35
SECTIOND'AMPLIFICATION...............................................36
TXM16 et TXM20 - Connecteurs d'entrée et de sortie . . . . . . . . . . . . . . . . . . . . . .38
FACEARRIÈRE............................................................40
CONNEXIONDESENCEINTES.............................................41
UtilisationdesTXM16etTXM20..........................................42
UTILISATIONDESEFFETSNUMÉRIQUES ..................................43
POUR ACHEMINER UN MIXAGE INDÉPENDANT AUX RETOURS DE SCÈNE . . .43
UTILISATIOND'UNEFFETEXTERNE........................................44
ENREGISTREMENT D'UN CONCERT AVEC LES TXM16 ET TXM20 . . . . . . . . . . . .45
Utilisation de la sortie MONO OUTPUT pour alimenter un Subwoofer . . . . . .45
TXM16etTXM20-Configurations........................................46
TXM16etTXM20-Guidedecâblage......................................48
Caractéristiquestechniques............................................ 122
Synoptique............................................................ 126
DEUTSCHE
Einleitung ...............................................................49
TXM16undTXM20Features..............................................50
ReglerundFunktionen...................................................51
MONO-EINGANGSKANALSEKTION........................................51
STEREO-EINGANGSKANALSEKTION.......................................53
24-BITDIGITALEFFEKTSEKTION...........................................55
StereoLine-Eingang .....................................................57
38-AUX1-Drehregler...................................................57
MasterAuxSend-Sektion.................................................57
PHONES-undCD/TAPEIN-Sektion........................................58
MONO/SUBWOOFER-Ausgangssektion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
MAIN-Ausgangssektion..................................................59
ENDSTUFEN-SEKTION....................................................60
TXM16 und TXM20 Eingänge und Ausgänge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
RÜCKSEITE...............................................................64
BOXENANSCHLUSS ......................................................65
TXM16undTXM20betreiben ............................................66
DIGITALEFFEKTEEINSETZEN .............................................67
UNABHÄNGIGE MISCHUNG ZU DEN MONITORBOXEN LEITEN. . . . . . . . . . . . . .67
EXTERNENEFFEKTEINSETZEN............................................68
DARBIETUNG ÜBER DEN TXM16 und TXM20 AUFNEHMEN. . . . . . . . . . . . . . . . .69
Subwoofer-System mit MONO-AUSGANG betreiben . . . . . . . . . . . . . . . . . . . . . .69
TXM16 und TXM20 System-Einrichtungen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
TXM16 und TXM20 Verdrahtungsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
TechnischeDaten...................................................... 123
Blockdiagramm........................................................ 126
ESPAÑOL
Introducción.............................................................73
CaracterísticasdelTXM16yTXM20.......................................74
Controlesyfunciones....................................................75
SECCIONDECANALDEENTRADAMONO.................................75
SECCIONDECANALDEENTRADASTEREO................................77
SECCION DE EFECTOS DIGITALES DE 24 BITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Entradadelíneastereo...................................................81
38-ControlAUX1 .......................................................81
Seccióndeenvíoauxiliarmaster..........................................81
SecciónPHONESyCD/TAPEIN ...........................................82
Sección de salida MONO/SUBWOOFER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
SeccióndesalidaPRINCIPAL..............................................83
SECCIONDEETAPADEPOTENCIA.........................................84
Conexiones de entrada y salida del TXM16 y TXM20. . . . . . . . . . . . . . . . . . . . . . .86
Conexiones de entrada y salida del TXM16 y TXM20. . . . . . . . . . . . . . . . . . . . . . .87
Conexiones de entrada y salida del TXM16 y TXM20. . . . . . . . . . . . . . . . . . . . . . .88
PANELTRASERO .........................................................88
Conexiones de entrada y salida del TXM16 y TXM20. . . . . . . . . . . . . . . . . . . . . . .89
CONEXIONDEALTAVOCES ...............................................89
ManejodelTXM16yTXM20..............................................90
ManejodelTXM16yTXM20..............................................91
USODELOSEFECTOSDIGITALES .........................................91
ENVIO DE UNA MEZCLA INDEPENDIENTE A LOS MONITORES . . . . . . . . . . . . . .91
ManejodelTXM16yTXM20..............................................92
USODEUNEFECTOEXTERNO............................................92
ManejodelTXM16yTXM20..............................................93
GRABACION DE SU INTERPRETACION DESDE EL TXM16 Y TXM20. . . . . . . . . . .93
Uso de la salida MONO OUTPUT para dar señal a un sistema Subwoofer . . .93
Configuraciones de sistemas con el TXM16 y TXM20 . . . . . . . . . . . . . . . . . . . . . .94
GuíadecableadodelaTXM16yTXM20...................................96
Especificacionestécnicas............................................... 124
Diagramadebloques.................................................. 126
ITALIANO
Introduzione.............................................................97
TXM16eTXM20-Caratteristiche.........................................98
ControllieFunzioni......................................................99
SEZIONE DEGLI INGRESSI DI CANALE MONO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
ControllieFunzioni.................................................... 100
SEZIONE DEGLI INGRESSI DI CANALE STEREO . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
ControllieFunzioni.................................................... 102
SEZIONEEFFETTIDIGITALIA24BIT..................................... 103
ControllieFunzioni.................................................... 104
INGRESSIDILINEAStereo .............................................. 105
38 - Controllo AUX 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
SEZIONE GENERALE DELLE MANDATE AUSILIARIE . . . . . . . . . . . . . . . . . . . . . . . 105
ControllieFunzioni.................................................... 106
SEZIONECUFFIEEINGRESSOCD/TAPE.................................. 106
SEZIONE DI USCITA MONO/SUBWOOFER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
ControllieFunzioni.................................................... 107
Sezione delle uscite principali (mAIN). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
ControllieFunzioni.................................................... 108
SEZIONEDELFINALEDIPOTENZA...................................... 108
ControllieFunzioni.................................................... 109
SEZIONEDEGLIEQUALIZZATORI........................................ 109
ILPANNELLOPOSTERIORE.............................................. 112
IL COLLEGAMENTO DELLE CASSE ACUSTICHE . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
L'UsodelTXM16edelTXM20........................................... 114
L'USODEGLIEFFETTIDIGITALI.......................................... 115
COME INVIARE UN MIX INDIPENDENTE ALLE CASSE MONITOR . . . . . . . . . . . 115
L'UsodelTXM16edelTXM20........................................... 116
L'USODIUNEFFETTOESTERNO......................................... 116
L'UsodelTXM16edelTXM20........................................... 117
LA REGISTRAZIONE DELLE ESECUZIONI DAL TXM16 E DAL TXM20 . . . . . . . 117
L'UsO DELL'USCITA MONO PER ALIMENTARE UN SISTEMA DI SUBWOOFER 117
TXM16 e TXM20 - Configurazioni di Sistema . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
TXM16eTXM20-GuidaalCablaggio................................... 120
Specifiche............................................................. 125
DiagrammaaBlocchi .................................................. 126
Table Of Contents

Congratulations on your purchase of the Samson
TXM16 or TXM20 powered mixer! The TXM16 and
TXM20 are sixteen and twenty channel, pow-
ered mixers in ergonomically correct, attractively
appointed, tabletop enclosures. Both TXM models
feature the same massive 1000-watt power ampli-
fier, which is capable of running in 2 x 500-watt
stereo, 500-watt Main plus 500-watt monitor, or
1000-watt bridge mono operating modes. To set
the overall tonal response of your mix, the TXM mix-
ers feature a Nine-band Stereo Graphic Equalizer
for the Main Left and Right outputs, plus a sepa-
rate Nine-band Graphic Equalizer for your monitor
mix. Connecting all your microphones and instru-
ments is simple, with eight mic/line inputs plus
four additional stereo channels on the TXM16, and
twelve mic/line inputs plus four additional stereo
channels on the TXM20. There are also dedicated
stereo effects returns for the onboard digital effects.
And the effects! You can add one of the TXM16’s
100 dazzling digital studio quality effects, which
include Delays, Chorus, Flanging, and of course,
lush Reverbs to your vocals or instruments using
the onboard 24-bit Multi-Effects Processor. It’s easy
to dial up your favorite effects preset with the large
seven-segment LED display. Need more effects?
The TXM20 employs two onboard 100 24-bit Multi-
Effects Processors. Plus, the TXM mixers have exten-
sive auxiliary busses allowing you to have complex
combinations of effects on all the channels, or two
different effects on different groups of channels. The
auxiliary buses are also extremely flexible when it
comes to monitor mixes. The TXM16 and TXM20 will
give you clean, clear sound reproduction thanks to
the high quality, low noise microphone preamps,
super clean, low impedance mix bus, two on-board
9-band graphic equalizers and the high output/low
distortion power amplifier. The units are easy to
transport with their compact size and oversized,
sure-grip handle. In addition, the TXM16 can be
rack mounted using the included eleven-space rack
mount kit.
Introduction
The super-tough steel construction ensures reli-
able, high quality sound from venue-to-venue and
performance-to-performance day in, and night
out. Optimized for live sound reinforcement and
commercial installations, the TXM16 and TXM20
are ideal mixer and power amp solutions that offer
plenty of inputs, sweet sounding effects and big
sound in a compact package.
With proper care and adequate air circulation, your
TXM mixer will operate trouble free for many years.
We recommend you record your serial number in
the space provided below for future reference.
Serial number: _________________________
Date of purchase: _______________________
Should your unit ever require servicing, a Return
Authorization number (RA) must be obtained before
shipping your unit to Samson. Without this number,
the unit will not be accepted. Please call Samson
at 1-800-3SAMSON (1-800-372-6766) for a Return
Authorization number prior to shipping your unit.
Please retain the original packing materials and if
possible, return the unit in the original carton and
packing materials. If you purchased your Samson prod-
uct outside the United States, please contact your local
distributor for warranty information and service.
Also, be sure to check out our website (www.sam-
sontech.com) for complete information about our
full product line.
ENGLISH
1

TXM16 and TXM20 Features
The Samson TXM16 and TXM20 powered mixers are
comprehensive, all-in-one mixer/power amplifier
solutions for a variety of live sound applications.
Here are some of their main features:
• The TXM16 and TXM20 are sixteen and twenty
channel powered mixers in ergonomically correct,
table-top enclosures providing easy to see and
easy to operate front panel controls. In addition,
the TXM16 can be rack mounted using the includ-
ed eleven-space rack mount kit.
• Both TXM mixers use the same massive 1000-watt
power amplifier section, featuring three modes
of operation; 2 x 500-watts Stereo Main, or 500-
watt Mono Main/500-watt Monitor, or 1000-watts
Bridged Mono. And those power ratings are true
RMS, measured at full bandwidth.
• Ample inputs, the TXM16 has eight mic/line
inputs plus four stereo line inputs, while the
TXM20 features twelve mic/line inputs plus four
stereo line inputs. Plus dedicated stereo returns
for the onboard effects.
• The TXM16 has a built-in, 24-bit DSP (Digital
Signal Processor) Multi-effects Processor with 100
selectable presets offering dazzling studio quality
effects including Reverb, Delay and Chorus and
Flanging. The TXM20 feature two 24-bit DSP’s,
each with 100 selectable presets of studio quality
effects on each input.
• The TXM series mixers feature high-quality, low-
noise microphone pre-amplifiers that can accept a
signal from most any standard microphone. With
the mixer’s XLR connectors, connecting standard
low impedance dynamic mics is simple, and con-
denser microphones are connected easily using
the available 48 Volt Phantom Power.
• Each of the TXM16 and TXM 20’s mic / line chan-
nels feature a convenient Insert Point jack to patch
in external effects and a Three-band Equalizer
with variable mid-range control enabling you to
tailor the tonal response of each input.
• The TXM 16 has three auxiliary sends. Two Aux
sends on each channel for building two inde-
pendent monitor mixes, plus a third EFX send
for sending signal to the internal Multi-effects
Processor. The TXM 20 has 4 auxiliary sends. One
dedicated Aux send for monitors, plus a second
Aux send that can be set up to be either a monitor
send or an effects send using the Pre/Post switch,
and two additional EFX sends for sending to the
dual internal multi-effects processors.
• A Stereo 9-band Graphic Equalizer for the Main
left and right outputs, plus a Mono 9-band for the
Monitor output, allow the TXM mixers to be set-up
for maximum gain before feedback.
• Mono/ Subwoofer Output with variable Low-pass
Filter.
• A convenient Tape/CD Input is provided so you
connect a stereo device for accompaniment or
background music.
• The brilliant sound quality is achieved thanks to
the advanced circuit design, utilizing low-noise
operational amplifiers and low impedance busing.
• Durable steel enclosure is road tough insuring reli-
able performance from night to night and venue
to venue.
• The convenient, oversize grip handle make the
units easy to carry.
• Three-year extended warranty.
ENGLISH
2

Controls and Functions
MONO INPUT CHANNEL SECTION
The following section details each part of the TXM16 and
TXM20’s INPUT CHANNELS including the 3-BAND EQ, the
MONITOR and EFX sends, PAN, GAIN and VOLUME con-
trols.
1 - SIGNAL LED
The TXM16 and TXM20’s MIC/LINE pre-amp also includes
a SIGNAL LED which, when illuminated, indicates that the
signal is present at the input.
2 - GAIN Control Knob
The TXM16 and TXM20’s pre-amp stage has a variable
GAIN control with a range of -6 to -50dB on the MIC input
and +14 to -30dB on the LINE input.
3 - LOW CUT Switch
Each of the TXM’s channels include a LOW CUT (or high
pass) filter which rolls off the low frequencies from 75Hz
and below at the rate of 18dB per octave.
4 - Channel Equalizer
The TXM16 and TXM20 mic/line input channels incorpo-
rate a 3-band, swept-mid equalizer allowing you to adjust
the high, mid-range, and low frequencies independently
on each channel. The frequency centers, range of boost or
cut, and equalizer type for each band are described in the
following section.
HF (HIGH FREQUENCY) 12kHz +/- 15dB Shelving type
The channel’s HIGH frequency response is flat when the
knob is in the “12:00” position. Rotating the knob towards
the right will boost the channel's high frequency response
at 12 kHz by 15dB, and rotating it towards the left will cut
the high frequency by 15dB.
MF (MID FREQUENCY) CUT & BOOST
The MID CUT & BOOST knob is used in conjunction with
the MID FREQUENCY knob to create the tonal shape in
the mid-range frequency when using the mono channel’s
equalizers. You can adjust the frequency on the mid-
range control with the FREQ knob, and use the MF CUT
& BOOST to either boost or cut that frequency by plus or
minus 15dB. The channel’s MID frequency response is flat
when the MF knob is in the “12:00” position.
FREQ (MID FREQUENCY) Variable 100Hz – 8K
The MID FREQUENCY is a control enabling you enhanced
capabilities in the tonal shaping of the input channel
signal. Thanks to the MID FREQUENCY control, you have
a variable mid-range equalizer, allowing you to pin point
the exact frequency you want to boost or cut. The MID
SWEEP has a“fixed Q”of two octaves (the amount, or
width, of frequencies around the center point that are
effected by the MID CUT & BOOST control) and can be set
in a range from 100Hz to 8Khz.
LF (LOW FREQUENCY) 80Hz +/- 15dB shelving type
The channel’s LOW frequency response is flat when the
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3

Controls and Functions
5
MONO INPUT CHANNEL SECTION - continued
knob is in the “12:00” position. Rotating the knob towards
the right will boost the channel's low frequency response
at 80 Hertz by 15dB, and rotating it towards the left will
cut the frequency by 15dB.
Auxiliary Busses ( 5 - 9 )
The TXM series include several auxiliary signal paths, or
buses, that can be used to create independent mixes for
sending to the internal or external effects processors, or
to an external monitor system. These buses start by send-
ing the signal from each individual channel, which is set
with one of the auxiliary control knobs. Then, the mix of
all the channels auxiliary level is ultimately sent to either
an internal effects processor, or to an output jack to con-
nect to an external effect or monitor system. To help you
control your effects and monitor mixes, the TXM16 has
three auxiliary buses, while the TXM20 has four auxiliary
buses.
PRE….? POST….? What’s That?
In order to operate your mixer correctly, it is important
to understand the concept of PRE and POST fader sends.
An auxiliary bus that is set up as PRE Fader routes, or
sends, the signal to its output from a point in the chan-
nels’circuit that is electronically before the channel Fader.
That means the channel Fader has no effect on the PRE
aux level. A Pre Fader send is what you want to use for a
monitor mix, so when the level is changed for the mix in
the main PA speakers using the channel Fader, the level
in the monitor set by the aux control knob remains the
same. An auxiliary bus that is set up as POST Fader routes,
or sends, the signal to its output from a point in the chan-
nels’circuit that is electronically after the channel Fader.
That means that the channel Fader also affects the level of
a POST aux send. A POST Aux bus is what you want to use
(almost always) for sending to an effects processor, either
internal or external. When using the POST aux sends,
(while turning the channel Fader up or down) the level of
effects will track the channel level correctly.
5 – AUX 1- Pre Fader Send
Each of the TXM16 and TXM20’s Mono Input channels
include an AUX 1 send, which controls the amount of that
channel’s signal that is sent to the AUX 1 Output. The sig-
nal feeding Aux 1 is sent before, or pre, the channel Fader,
so the channel Fader has no effect on the Aux 1 level. The
Aux 1 buss is usually used to create a separate mix for a
floor monitor system.
Note: If the AMP MODE switch is set to either MONO - -
AUX 1, or AUX 1 - - AUX 2, the signal from AUX 1 bus will
be sent through the Master Aux 1 Send and then directly
to the internal power amplifier. For more information on
the POWER AMP MODE switch, see the section "POWER
AMP MODE Switch”on page 12 in this manual.
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7
6 – AUX 2 - Pre Fader SendTXM16 / PRE/POSTTXM20
Each of the TXM16 and TXM20’s Mono Input channels
include an AUX 2 send, which controls the amount of that
channel’s signal that is sent to the AUX 2 Output. On the
TXM16, the signal that feeds Aux 2 is sent before, or pre,
the channel Fader, so the channel Fader has no effect on
the Aux 2 level. On the TXM20, Aux 2 can be configured
for pre or post fader send using the PRE/POST switch. The
Aux 2 bus is usually used to create a separate mix for a
floor monitor system, but you can set the Pre/Post switch
on the TXM20 to Post to use the send as en effects bus to
an external processor.
Note: If the POWER AMP MODE switch is set to AUX 1 - -
AUX 2, the signal from AUX 2 bus will be sent directly to
the internal power amplifier. For more information on the
POWER AMP MODE switch, see the section "POWER AMP
MODE Switch”on page 12 in this manual.
7 - PRE/POST - switch (TXM20 only)
The PRE/POST switch is used to select the point that the
Aux 2 bus uses to send the signal. When the PRE/POST
switch is set to PRE, the signal feeding Aux 2 is sent before
the fader, so the channel Fader has no effect on that level.
This is the normal setting when using Aux 2 as a monitor
send. When the PRE/POST switch is set to POST, the signal
feeding Aux 2 is sent after the fader, so the channel Fader
has an effect on that level, meaning the Aux level tracks
up and down with the channel Fader. This is the normal
setting for using Aux 2 as an effects send, since when you
set the channel louder you normally want the effect to
get louder.
NOTE: The channel’s EFX signal is sent to the EFX bus from
a location in the signal path after the VOLUME control.
8 – AUX 3/EFX1 - Post Fader Send
The TXM16 and TXM20 provides high quality, 24 Bit digital
effects, and the level of effects can be set independently
on each channel. The channel’s EFX knob controls the
amount of signal that is sent to the EFX bus. The signal of
the EFX bus is routed to the DSP EFX section for on-board
signal processing. On the TXM20 the EFX1 signal can also
be sent to an external effect device connected to the EFX
1 SEND jack located on the front panel jack field.
9 – AUX 4/EFX 2 Effects Send (TXM20 only)
The TXM16 and TXM20 provides high quality, 24 Bit digi-
tal effects, and the level of effects can be set indepen-
dently on each channel. The channel’s EFX (Effects) knob
controls the amount of signal that is sent to the EFX bus.
The signal of the EFX bus is routed to the DSP EFX section
for on-board signal processing. The EFX2 signal can also
be sent to an external effect device connected to the EFX
2 SEND jack located on the front panel jack field.
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Controls and Functions
MONO INPUT CHANNEL SECTION - continued
NOTE: The signal feeding EFX1 and EFX2 is sent after the
channel Fader (14), so the channel Fader has an effect on
that level, meaning the Aux level tracks up and down with
the channel Fader. This means that the amount of signal
that is sent to the EFFECTS bus will be affected not only
by the setting of the EFX knob control, but it will also be
affected by the setting of the channel Fader volume con-
trol.
10 - PAN Control
The TXM16 and TXM20’s PAN control is used to place or
position the mono signal into the stereo main Left and
Right MIX bus. You can create a stereo image by panning
some input signals to the left and others to the right. The
TXM16 and TXM20’s PAN control is a Power-Pan circuit,
which includes a 3dB dip in the center position. This is
desirable since there’s a 3dB increase in gain when the
mono input signal is heard in both the Left and Right MIX
bus.
11 - MUTE switch
The Mono Input channels feature a large, backlit
MUTE switch allowing you to easily turn that chan-
nel on or off. When MUTE switch is illuminated, the
channel is off, conversely, when the backlight is off,
the channel is on.
12 - PFL (Pre Fader Listen) switch
The Mono Input channel’s PFL, or Pre Fader Listen switch
allows you to listen, or “solo”a channel or group of chan-
nels in the headphones. When the PFL switch is pressed
down, the channel is assigned to the solo bus and can
be heard in any optional headphones plugged in to the
PHONES connector located in the front panel jack field.
Since the signal is sent pre fader, you can hear the signal
regardless of the position of the channel volume Fader.
This allows you to listen to a channel by itself: (let's say) to
see if an artist is out of tune, or to cue up a channel with-
out having to play it through the main PA speakers.
13 - PEAK LED
The TXM16 and TXM20’s MIC/LINE pre-amp also includes a
PEAK LED which when illuminated, indicates that the sig-
nal is peaking or overloading. To reduce distortion, lower
the GAIN control to keep this LED from staying on.
14- VOLUME - Fader Level Control
The VOLUME Fader control adjusts the level of each mono
input channel.
STEREO INPUT CHANNEL SECTION
ENGLISH
5

STEREO INPUT CHANNEL SECTION
The TXM16 and TXM20 feature stereo input channels
for connected stereo line level devices like keyboards
and drum machines, as well as the outputs from effects
processors and digital guitar modelers. The TXM 16 has
two sets of stereo inputs which make up channels 9/10
and 11/12, while the TXM20 has four sets of stereo inputs
which make up channels 9/10, 11/12, 13/14 and 15/16.
The Stereo input channels have a three-band fixed equal-
izer and AUX and EFX sends and are laid out the same as
the mono inputs. The following section details the stereo
input controls:
15 – SIGNAL LED
The TXM16 and TXM20’s Stereo Input also includes a
SIGNAL LED which, when illuminated, indicates that a sig-
nal is present at the input.
16 - GAIN Control
The TXM16 and TXM20’s pre-amp stage has a variable
GAIN control with a range of -20 to +20dB on the stereo
LINE input.
17 - HIGH/MID/LOW - Channel Equalizer
The TXM16 and TXM20 Stereo input channels feature a
3-band equalizer allowing you to adjust the high, mid,
and low frequencies independently on each channel. The
stereo channel equalizer is laid out like a mono input on
the control panel input strip, but internally, the equalizer
is affecting a stereo signal path. The channel’s frequency
response is flat when the knobs are in the“12:00”position.
Rotating the knob towards the right will boost the cor-
responding frequency band by 12dB/15dB, and rotating it
towards the left will cut the frequency by 12dB/15dB. The
frequency centers, range of boost or cut, and equalizer
type for each band are as follows:
High: 12kHz +/- 15dB shelving type
Mid: 2.5kHz +/- 12dB peaking type
Low: 80Hz +/- 15dB shelving type
Auxiliary Busses ( 18 - 22 )
The TXM series include several auxiliary signal paths, or
buses, that can be used to create independent mixes for
sending to the internal or external effects processors, or to
an external monitor system. These buses start by sending
the signal from each individual channel, which is set with
one of the auxiliary control knobs. Then, the mix of all
the channels auxiliary level is ultimately sent to either an
internal effects processor, or to an output jack to connect
to an external effect or monitor system. To help you con-
trol your effects and monitor mixes, the TXM16 has three
auxiliary buses, while the TXM20 has four auxiliary buses.
In order to operate your mixer correctly it is important to
understand the concept of PRE and POST fader sends. For
more information on Pre and Post aux sends, see the pre-
vious section “Pre…?, Post?… What’s that?” Located on
page 4 of this manual.
18 – AUX 1- Pre Fader Send
Each of the TXM16 and TXM20’s stereo input channels
include an AUX 1 send, which controls the amount of that
channel’s signal that is sent to the AUX 1 Output. The sig-
nal feeding Aux 1 is sent before, or pre, the channel Fader,
so the channel Fader has no effect on the Aux 1 level. The
Aux 1 bus is usually used to create a separate mix for a
floor monitor system.
Note: If the AMP MODE switch is set to either MONO - -
AUX 1, or AUX 1 - - AUX 2, the signal from AUX 1 bus will
be sent directly to the internal power amplifier. For more
information on the AMP MODE switch see the section
“Using the AMP MODE Switch” on page 12 in this manual.
19– AUX 2-PreFaderSendTXM16/ PRE/POSTTXM20
Each of the TXM16 and TXM20’s stereo input channels
include an AUX 2 send, which controls the amount of that
channel’s signal that is sent to the AUX 2 Output. On the
TXM16, the signal that feeds Aux 2 is sent before, or pre,
the channel Fader, so the channel Fader has no effect on
the Aux 2 level. On the TXM20, Aux 2 can be configured
for pre or post fader send using the PRE/POST switch. The
Aux 2 bus is usually used to create a separate mix for a
floor monitor system, but you can set the Pre/Post switch
on the TXM20 to Post to use the send as an effects bus to
an external processor
Note: If the AMP MODE switch is set to AUX 1 - - AUX 2, the
signal from AUX 2 bus will be sent directly to the internal
power amplifier. For more information on the AMP MODE
switch see the section “Using the AMP MODE Switch”on
page 12 in this manual.
20 - PRE/POST - switch (TXM20 only)
The PRE/POST switch is used to select the point that the
Aux 2 bus uses to send the signal. When the PRE/POST
switch is set to PRE, the signal feeding Aux 2 is sent before
the fader, so the channel Fader has no effect on that level.
This is the normal setting when using Aux 2 as a monitor
send. When the PRE/POST switch is set to POST, the signal
feeding Aux 2 is sent after the fader, so the channel Fader
has an effect on that level, meaning the Aux level tracks
up and down with the channel Fader. This is the normal
setting for using Aux 2 as an effects send, since when you
set the channel louder, you normally want the effect to
get louder.
21 – AUX 3/EFX1 - Post Fader Send
The TXM16 and TXM20 provides high quality, 24 Bit digital
effects, and the level of effects can be set independently
on each channel. The stereo channel’s EFX knob controls
the amount of signal that is sent to the EFX bus. The signal
of the EFX bus is routed to the DSP EFX section for on-
board signal processing. On the TXM20, the EFX1 signal
can also be sent to an external effect device connected to
the EXF 1 SEND jack located on the front panel jack field.
Controls and Functions
ENGLISH
6