RDL FLAT-PAK FP-PA35A User manual

FLAT-PAK™SERIES
Model FP-PA35A
35 W Audio Power Amplifier
with Power Supply
35 Watts RMS Constant Voltage Amplifier
25 V, 70 V or 100 V Output
Automatic Energy-Saving Sleep Mode
Selectable Sleep Delay: Off, 5, 15, 25 Minutes
Input / Output Terminal Block Connections
Line Level Balanced or Unbalanced Input
Compressor/Limiter Controls Clipping
LED to Indicate Audio Compression Threshold
Compressor Produces Maximized Average Output Power
Audio Quality Superior to Standard Amplifiers
Ultra-compact All Metal Construction
High-Efficiency Class D Operation
Thermal and Short-Circuit Protection
The FP-PA35A is part of the group of versatile FLAT-PAK products from Radio Design Labs. The unique FLAT-PAK case can be directly screwed
or bolted to cabinets or shelves. Optionally available rack-mounting accessories permit single or multiple FLAT-PAK module mounting.
APPLICATION: The FP-PA35A is the ideal choice in many applications where multiple 25 V, 70 V or 100 V speakers in a
zone need to be powered from a single audio power amplifier.
The FP-PA35A features a balanced line level input that may be connected unbalanced. A front panel gain control is
designed to be adjusted manually or with a trimming screwdriver. The gain range will accommodate standard unbalanced
levels as well as professional balanced levels. Multiple distributed sound system speakers connect to the corresponding
25 V, 70 V or 100 V amplified output.
The FP-PA35A includes an analog compressor/limiter for audio fidelity audibly superior to conventional class D amplifiers
with digital limiting. The input GAIN setting determines whether the limiter alone is used for clipping suppression, or if the
full compressor/limiter will be used to substantially increase the average output power beyond that of a standard 35 W
amplifier. A red COMPRESSION LED flashes when the limiter is preventing output clipping. Normal audio level signals
remain unaffected by the compressor thereby preserving audio dynamics. If the input level is increased so that the
compressor is active, the LED remains dimly lit between peak flashes. The audio is compressed according to three
dynamic time constants providing aural transparency while maintaining clean, unclipped amplified audio for input overloads
of up to 20 dB. The FP-PA35A, with compression, is capable of producing average audio output levels and clarity normally
expected from amplifiers with a much higher output power rating.
The FP-PA35A circuits are all designed for low power consumption. In the absence of an audio input, a digital timer is
enabled to switch the class D output stage off. When this sleep mode is active, the amplifier module and its included RDL
power supply consume less than 1 W of mains power. A front-panel control sets the sleep mode delay timer to 5, 15 or 25
minutes. The control also permits the installer to bypass the sleep mode to conform to system specifications that require
the amplifier to be active at all times. Upon detection of an input signal, the amplifier is nearly inaudibly and instantly
restored to full operation within 150 milliseconds.
A blue POWER LED illuminates when the FP-PA35A is powered from its external 24 Vdc power supply. The power LED is
dimly illuminated when the sleep mode disables the amplifier and glows brightly when the amplifier operation is fully
enabled. The module is equipped with both thermal and output short-circuit protection. The high-efficiency Class D output
stage produces minimal heat for all levels of expected voice or music modulation. Continuous full-power operation with
audio tones will not damage the amplifier, but is not recommended.
Wherever an ultra-compact, high quality, high efficiency eco-friendly audio power amplifier is needed to provide reliability
and unsurpassed versatility, the FP-PA35A is the ideal choice. Use the FP-PA35A individually, or combine it with other
RDL products as part of a complete audio/video system.
RDL 659 6th St. Prescott, AZ., USA 86301 [phone] FAX [phone] www.rdlnet.com

FLAT-PAK™
SERIES
Model FP-PA35A
35 W Audio Power Amplifier with Power Supply
Mounting
The FP-PA35A should be mounted in a location with good ventilation. If the module is mounted using a box that does not provide ventilation, the amplifier should be
secured to the outside surface of the box. The ambient operating environment must not exceed 40 degrees C.
TYPICAL PERFORMANCE
Input: Line level
(+4 dBu nominal balanced)
(-10 dBV nominal unbalanced)
Input Impedance: 20 kbalanced bridging
10 kunbalanced
Input / Output Connectors: Detachable terminal block
Gain Adjustment: Single turn audio taper
Minimum Input Levels:
Balanced:.................. -14 dBu (to cross compressor threshold)
Unbalanced: ............. -15 dBV (to cross compressor threshold)
Maximum Input Levels:
Balanced:.................. +22 dBu
Unbalanced: ............. +20 dBV
Frequency Response: 50 Hz to 20 kHz (+/- 3 dB)*
THD+N: < 0.5% (@ 1 kHz)*
< 0.5% (50 Hz to 20 kHz, 1 W)
Compressor: Threshold 2 dB below rated output,
automatic adjusting attack and release times
Noise: <-75 dB (below 35 W RMS)
CMRR: > 60 dB (50 Hz to 120 Hz)
Output Power: 35 W RMS @ 25 V, 70 V or 100 V
Sleep Mode Power Consumption: < 1 W (amplifier and included power supply)
Sleep Mode Delay: 5, 15 or 25 minutes (selectable)
Sleep Mode Disable: Selectable
Active Mode Delay: < 150 mS after input audio detected
Audio Detector Threshold: -50 dBu balanced, -52 dBV unbalanced
Ambient Operating Environment: 0° C to 40° C Maximum; 20° C Recommended
Indicators (2): Red LED: PEAK LED indicates compressor activity
Blue LED: Power ON, Dim: Sleep mode active; Bright: Amplifier active
Power Supply (included): 100 to 240 Vac, 50-60 Hz, 2A; 24 Vdc output to module, Ground-referenced
Dimensions: Height: 2.80 in.(7.1 cm); Width: 3.25 in.(8.26 cm); Length: 6.04 in.(15.3 cm)
*measured at compressor threshold level equaling 22 W RMS output power
Installation/Operation
EN55103-1 E1-E5; EN55103-2 E1-E4; EN60065
Typical Performance reflects product at publication time exclusive of EMC
data, if any, supplied with product. Specifications are subject to change
without notice. This product is Professional Apparatus.
Radio Design Labs Technical Support Centers
U.S.A. [phone], [phone]; Fax: [phone]
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
891-2150B
Sleep Mode is automatic after
the sleep delay time has
elapsed following absence of
input audio.
Sleep Mode may be activated
manually by repowering the
module with input audio absent.
NOTE: This equipment has been tested and found to
comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rule. These limits are designed to
provide reasonable protection against harmful interference
in a residential installation. The equipment generates,
uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions,
may cause harmful interference to radio communications.
However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception,
which can be determined by turning the equipment off an
on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment
and receiver
Connect the equipment into an outlet on a circuit
different from that which the receiver is
connected.
Consult the dealer or an experienced radio/TV
technician for help.

Sicherheitsvorkehrungen
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.
1) Lesen Sie diese Anweisungen bevor Sie das Gerät in Betrieb nehmen.
2) Bewahren Sie diese Anweisungen auf.
3) Beachten Sie alle Warnhinweise.
4) Befolgen Sie alle Anweisungen.
5) Benutzen Sie die Vorrichtung nie in der Nähe von Wasser oder Feuchtigkeit.
6) Nur mit trockenem Tuch reinigen.
7) Belüftungsöffnungen nicht blockieren. Den Anweisungen des Herstellers entsprechend installieren.
8) Installieren Sie die Vorrichtung nicht in der Nähe von Wärmequellen wie Radiatoren, Heizkörpern,
Herden oder anderen Geräten (insbesondere Verstärkern), die Wärme erzeugen.
9) Verwenden Sie nur vom Hersteller zugelassenes Zubehör.
10) Ziehen Sie bei Gewittern oder bei längeren Stillstandzeiten den Netzstecker des Geräts.
11) Überlassen Sie alle Wartungsarbeiten qualifiziertem Personal. Ein Service wird erforderlich, wenn das
Gerät in irgendeiner Weise beschädigt wurde, beispielsweise bei Beschädigung des Netzteils oder des
Netzkabels, wenn Flüssigkeiten über das Gerät vergossen wurden oder Gegenstände in das Gerät
gefallen sind, das Gerät Regen oder Feuchtigkeit ausgesetzt war, nicht ordnungsgemäß funktioniert oder
fallen gelassen wurde.
12) Ziehen Sie den Netzstecker aus der Steckdose, um das Gerät vollständig vom Wechselstromnetz zu
trennen.
13) WARNHINWEIS: Um die Gefahr vom Feuer oder Stromschlag zu vermeiden, darf das Gerät nicht Regen
oder Feuchtigkeit ausgesetzt werden.
14) Lassen Sie nicht zu, dass Flüssigkeiten auf das Gerät tropfen oder gespritzt werden können, und achten
Sie darauf, dass keine mit Wasser gefüllten Gegenstände wie Vasen auf das Gerät gestellt werden.
15) Warnaufkleber können sich an belieber Stelle (inklusive Unterseite) am Gehause des Apparates
befinden.
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 gleichseitigen Dreieck soll den Anwender auf wichtige
Bedienungs- und Wartungsanleitungen aufmerksam machen, die im mitgelieferten
Informationsmaterial näher beschrieben werden.
Instrucciones de seguridad
No quitar la tapa ni la parte posterior del chasis. Dentro del aparato no hay
piezas susceptibles de ser reparadas por el usuario.
1) Lea estas instrucciones antes de comenzar a usar la unidad.
2) Conserve estas instrucciones.
3) Atienda todas las advertencias.
4) Siga todas las instrucciones.
5) No use este aparato cerca del agua o en lugares húmedos.
6) Limpie sólo con un paño seco.
7) No bloquee ningún orificio de ventilación. Instale de acuerdo con las instrucciones del fabricante.
8) No lo instale cerca de ninguna fuente de calor, como radiadores, registros de calefacción, estufas u
otros aparatos (incluidos los amplificadores) que produzcan calor.
9) Use únicamente aditamentos o accesorios especificados por el fabricante.
10) Desenchufe este aparato durante las tormentas eléctricas o cuando no se use durante períodos
prolongados de tiempo.
11) Refiera todo el servicio a personal cualificado. Se requiere servicio cuando el aparato se ha dañado de
cualquier forma, como si se dañan el cable de alimentación o la clavija, si se ha vertido un líquido
o han caído objetos al interior del aparato, si el aparato ha estado expuesto a la lluvia o la humedad, no
funciona normalmente o ha caído.
12) Para desconectar completamente este aparato de la red de CA, desconecte el alimentación eléctrica del
receptáculo de CA.
13) ADVERTENCIA – Para reducir el riesgo de incendio o descarga eléctrica, no exponga este aparato a la
lluvia o la humedad.
14) No exponga este equipo a escurrimientos o salpicaduras, y asegúrese de que no se coloquen objetos
llenos de líquido, como jarrones, sobre el equipo.
15) Las etiquetas de advertencia se pueden sujetar a cualquier superficie (parte inferior incluyendo) del
aparato.
El signo de exclamación dentro de un triángulo equilátero alerta al usuario de la existencia
de importantes instrucciones sobre funcionamiento y mantenimiento (asistencia) en el
manual que acompa~na al equipo.
El símbolo del relámpago con punta de flecha, dentro de un triángulo equilátero, alerta al
usuario de la presencia de un “voltaje peligroso” sin aislar en el interior del producto, que
puede ser de la suficiente magnitud como para constituir un riesgo de descarga eléctrica
para las personas.
S001
Safety Instructions
Do not remove the cover or rear panel. This unit contains no user serviceable
parts inside.
1) Read these instructions before operating the unit.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water or moisture.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9) Only use attachments/accessories specified by the manufacturer.
10) Unplug this apparatus during lightning storms or when unused for long periods of time.
11) Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as if the power-supply or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.
12) To completely disconnect this apparatus from the AC mains, disconnect the power supply plug from the
AC receptacle.
13) WARNING – To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
14) Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids,
such as vases, are placed on the equipment.
15) Warning labels may be attached to any surface (including the bottom) of the apparatus.
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to
alert the user to the presence of uninsulated “dangerous voltage” within the product’s
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.
Consignes de sécurité
N’ôtez pas le couvercle ni le panneau arrière du boîtier. Cet appareil ne contient
aucune pièce remplaçable par l’utilisateur.
1) Lisez ces instructions avant d’utiliser l’appareil.
2) Conservez ces instructions.
3) Respectez toutes les mises en garde.
4) Suivez toutes les instructions.
5) N’utilisez pas cet appareil près d’une source liquide ou dans un lieu humide.
6) Nettoyez-le uniquement avec un chiffon sec.
7) Ne bloquez pas aucune ouverture de ventilation. Installez l’appareil en suivant les instructions du
fabricant.
8) Ne l’installez pas à proximité d’une source de chaleur, comme un radiateur, un four ou tout autre
appareil (amplificateurs y compris) qui produisent la chaleur.
9) Utilisez uniquement les fixations/accessoires agréés par le fabricant.
10) Déconnectez l’appareil pendant les orages ou lors de périodes d’inutilisation prolongées.
11) Confiez toutes les réparations à un technicien qualifié. Vous devez faire contrôler cet appareil s’il a été
endommagé de quelque façon que ce soit, comme lorsque l’alimentation ou les fiches sont
endommagés, qu’un liquide ou des objets se sont infiltrés dans l’appareil, qu’il a été exposé
à la pluie ou l’humidité, qu’il a subi un choc ou qu’il ne fonctionne pas normalement.
12) Pour déconnecter entièrement l’appareil du secteur, déconnectez la fiche de l’alimentation de la prise.
13) MISE EN GARDE – Pour réduire les risques d’incendie ou d’électrocution, n’exposez pas cet appareil
aux intempéries ou à l’humidité.
14) N’exposez pas cet appareil à l’humidité ou aux projections liquides. Ne posez pas de récipient rempli de
liquide, tel qu’un vase, sur cet appareil.
15) Des étiquettes d’avertissement peuvent être attachées à n’importe quelle surface (y compris le fond) de
l’appareil.
L’éclair de foudre fléché au centre d’un triangle équilatéral prévient l’utilisateur
de la présence de courants élevés dans l’appareil, pouvant constituer un risque
d’électrocution en cas de mise en contact avec les composants internes.
Le point d’exclamation au centre d’un triangle équilatéral prévient l’utilisateur de la
présence d’instructions importantes dans le mode d’emploi concernant la mise en
oeuvre et l’entretien de l’appareil.
659 6th Street • Prescott • Arizona • 86301 • USA www.rdlnet.com