Rane ML 1 User manual

ML 1
MIC PREAMP
ML 1
MIC / LINE
PREAMP
SIGNAL
12
OVERLOAD POWER
12

ATTENTION: RISQUE DE CHOCS ELECTRIQUE - NE PAS OUVRIR
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
To reduce the risk of electrical shock, do not open the unit. No user
serviceable parts inside. Refer servicing to qualied service personnel.
e symbols shown below are internationally accepted symbols
that warn of potential hazards with electrical products.
is symbol indicates that a dangerous voltage
constituting a risk of electric shock is present
within this unit.
is symbol indicates that there are important
operating and maintenance instructions in the
literature accompanying this unit.
WARNING
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, registers, stoves, or other apparatus (including ampliers) 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. e wide blade or third prong is provided for your safety. If the provided plug
does not t into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord and plug from being walked on or pinched particularly at plugs, convenience receptacles, and the point where it exits from
the apparatus.
11. Only use attachments and accessories specied by Rane.
12. Use only with the cart, stand, tripod, bracket, or table specied by the manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply
cord 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.
15. e plug on the power cord is the AC mains disconnect device and must remain readily operable. To completely disconnect this apparatus from
the AC mains, disconnect the power supply cord plug from the AC receptacle.
16. is apparatus shall be connected to a mains socket outlet with a protective earthing connection.
17. When permanently connected, an all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the
electrical installation of the building.
18. If rackmounting, provide adequate ventilation. Equipment may be located above or below this apparatus, but some equipment (like large power
ampliers) may cause an unacceptable amount of hum or may generate too much heat and degrade the performance of this apparatus.
19. is apparatus may be installed in an industry standard equipment rack. Use screws through all mounting holes to provide the best support.
WARNING: To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture. Apparatus shall not be exposed to dripping
or splashing and no objects lled with liquids, such as vases, shall be placed on the apparatus.
NOTE: is equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
ese limits are designed to provide reasonable protection against harmful interference in a residential installation. is 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 o and 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 dierent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modications not expressly approved by Rane Corporation could void the user's authority to operate the equipment.
is Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
WARNING: is product may contain chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.

ATTENTION: RISQUE DE CHOCS ELECTRIQUE - NE PAS OUVRIR
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
An d’éviter tout risque de choc électrique, ne pas ouvrir l’appareil.
Aucune pièce ne peut être changée par l’utilisateur. Contactez un
SAV qualié pour toute intervention.
Les symboles ci-dessous sont reconnus internationalement
comme prévenant tout risque électrique.
Ce symbole indique que cette unité utilise un
voltage élevé constituant un risque de choc
électrique.
Ce symbole indique la présence d’instructions
d’utilisation et de maintenance importantes dans le
document fourni.
ATTENTION
INSTRUCTIONS DE SÉCURITÉ
1. Lisez ces instructions.
2. Gardez précieusement ces instructions.
3. Respectez les avertissements.
4. Suivez toutes les instructions.
5. Ne pas utiliser près d’une source d’eau.
6. Ne nettoyer qu’avec un chion doux.
7. N’obstruer aucune évacuation d’air. Eectuez l’installation en suivant les instructions du fabricant.
8. Ne pas disposer près d’une source de chaleur, c-à-d tout appareil produisant de la chaleur sans exception.
9. Ne pas modier le cordon d’alimentation. Un cordon polarisé possède 2 lames, l’une plus large que l’autre. Un cordon avec tresse de masse possède
2 lames plus une 3è pour la terre. La lame large ou la tresse de masse assurent votre sécurité. Si le cordon fourni ne correspond pas à votre prise,
contactez votre électricien.
10. Faites en sorte que le cordon ne soit pas piétiné, ni au niveau du l, ni au niveau de ses broches, ni au niveau des connecteurs de vos appareils.
11. N’utilisez que des accessoires recommandés par Rane.
12. N’utilisez que les éléments de transport, stands, pieds ou tables spéciés par le fabricant ou vendu avec l’appareil. Quand vous utlisez une valise de
transport, prenez soin de vous déplacer avec cet équipement avec prudence an d’éviter tout risque de blessure.
13. Débranchez cet appareil pendant un orage ou si vous ne l’utilisez pas pendant un certain temps.
14. Adressez-vous à du personnel qualié pour tout service après vente. Celui-ci est nécessaire dans n’importe quel cas où l’appareil est abimé : si le
cordon ou les ches sont endommagés, si du liquide a été renversé ou si des objets sont tombés sur l’appareil, si celui-ci a été exposé à la pluie ou
l’humidité, s’il ne fonctionne pas correctement ou est tombé.
15. La che du cordon d’alimentation sert à brancher le courant alternatif AC et doit absolument rester accessible. Pour déconnecter totalement
l’appareil du secteur, débranchez le câble d’alimentation de la prise secteur.
16. Cet appareil doit être branché à une prise terre avec protection.
17. Quand il est branché de manière permanente, un disjoncteur tripolaire normalisé doit être incorporé dans l’installation électrique de l’immeuble.
18. En cas de montage en rack, laissez un espace susant pour la ventilation. Vous pouvez disposer d’autres appareils au-dessus ou en-dessous de celui-
ci, mais certains (tels que de gros amplicateurs) peuvent provoquer un buzz ou générer trop de chaleur au risque d’endommager votre appareil et
dégrader ses performances.
19. Cet appareil peut-être installé dans une baie standard ou un chassis normalisé pour un montage en rack. Visser chaque trou de chaque oreille de
rack pour une meilleure xation et sécurité.
ATTENTION: an d’éviter tout risque de feu ou de choc électrique, gardez cet appareil éloigné de toute source d’humidité et d’éclaboussures quelles
qu’elles soient. L’appareil doit également être éloigné de tout objet possédant du liquide (boisson en bouteilles, vases,…).
REMARQUE: Cet équipement a été testé et approuvé conforme aux limites pour un appareil numérique de classe B, conformément au chapitre 15
des règles de la FCC. Ces limites sont établis pour fournir une protection raisonnable contre tout risque d’interférences et peuvent provoquer une
énergie de radiofréquence s'il n'est pas installé et utilisé conformément aux instructions, peut également provoquer des interférences aux niveaux
des équipements de communication. Cependant, il n'existe aucune garantie que de telles interférences ne se produiront pas dans une installation
particulière. Si cet équipement provoque des interférences en réception radio ou télévision, ceci peut être detecté en mettant l'équipement sous/hors
tension, l'utilisateur est encouragé à essayer de corriger cette interférence par une ou plusieurs des mesures suivantes:
• Réorienter ou déplacer l'antenne de réception.
• Augmenter la distance entre l'équipement et le récepteur.
• Connecter l'équipement à une sortie sur un circuit diérent de celui sur lequel le récepteur est branché.
• Consulter un revendeur ou un technicien radio / TV expérimenté.
ATTENTION: Les changements ou modications non expressément approuvés par Rane Corporation peuvent annuler l'autorité de l'utilisateur à
manipuler cet équipement et rendre ainsi nulles toutes les conditions de garantie.
Cet appareil numérique de classe B est conforme à la norme Canadienne ICES-003.
Cet appareil numérique de classe B est conforme à la norme Canadienne NMB-003.

Manual-1
ML 1
MIC/LINE PREAMP
OPERATORS MANUAL
Quick Start
is section intends to help with the physical connections neces-
sary to get up and running with your snazzy new ML 1. If you
don’t read this entire manual, at least read this section.
As a safety precaution, turn all devices (especially power
ampliers) o when making connections. Doing so gives you a
chance to nd and correct wiring mistakes and prevent damage
to your ampliers, speakers, ears and spilling a hot drink in your
lap.
Connect balanced audio sources or microphones to the
Euroblock or XLR INPUT connectors. You may connect either
or both jack types (if you wish) of the OUTPUTS to your mixer,
recorder or amplier. Set the GAIN control to the half-way
(12:00) position. Set the MIC / LINE switch to “LINE” for a
WEAR PARTS: is product contains no wear parts.
ML 1
MIC / LINE
PREAMP
SIGNAL
12
OVERLOAD POWER
12
gain of +3 dB, or to the “MIC” position for a gain of +35 dB. If
a microphone requires phantom power, punch in the “PHAN-
TOM POWER” switch and the corresponding red LED will
light up.
If the ML 1 is being used as a dual analog preamp, connect
balanced audio OUTPUTS to the Euroblock or XLR connec-
tors. To talk to the digital audio world, connect to your choice of
AES3, SPDIF or TOSLINK digital audio outputs.
Connect the IEC320-C5 power cord. Observe that the
POWER LED on the front panel illuminates.
Now you may turn on any power amps and make nal ad-
justments with the GAIN controls.

Manual-2
Operation Details
ML 1
MIC / LINE
PREAMP
SIGNAL
12
OVERLOAD POWER
12
RANE CORP. MADE IN U.S.A.
DIGITAL OUTPUTS
OUTPUTS
GAIN
ACN 001 345 482
COMMERCIAL AUDIO
EQUIPMENT 24TJ
R
100-240 V
50/60 Hz 7 WATTS
ML 1
MIC
LINE
MIC
LINE
2
AES3
COAXIAL
OPTICAL
OVERLOAD
SIGNAL
SIGNAL
S/PDIF
1
2
2
1
2
1
1
-
+
-
+
-
+
-
+
INPUTS
2
2
1
1
-
+
-
+
-
+
-
+
PHANTOM
POWER
48V
Security Cover
Analog Connections
e ML 1 has two balanced analog Inputs, two balanced
analog Outputs on XLR and euroblock connectors. Feel free to
use either Input (but not both). Both Output types may be used
simultaneously if desired. For each Input or Output Euroblock
connector:
• Connect the (positive) audio line to the ‘+’ terminal.
• Connect the (negative) audio line to the ‘–’ terminal.
• Connect the cable shield to the terminal.
e XLRs use the polarity convention per IEC/ANSI/AES
standards of pin 2 positive, pin 3 negative and pin 1 shield. e
ML 1 does not invert the signal. For optimum Electromagnetic
Interference (EMI) immunity, connect the shields at both ends
of the cable. See the RaneNote “Sound System Interconnection”
(included) for more information on system connections and
proper grounding practices.
Analog Input Stage
Each analog input uses a studio-grade microphone preamp and
a 32 dB pad for use as a line-stage input. e mic preamp has a
single analog gain stage. When the Mic / Line switch is in MIC
position the gain control adjusts between 18 to 64 dB. When
the Mic / Line switch is in LINE position then a 32 dB pad is
inserted on the input to yield a gain range from -14 dB to +32
dB. is congures the input of the ML 1 as a high-performance
line stage that happily accepts the hot +24 dBu signals from
professional audio sources.
When using non-pro -10 dBV audio sources, set the GAIN
control to +12 dB line gain by rotating it to the 2:00 position.
When you’re hooking up a consumer DVD player with a single-
ended output (for example) and you really need an extra 6 dB
of gain (for a total of 18 dB of front-end gain), set the GAIN
control just past the 3:00 position.
Analog Output Stage
Analog output is real easy. Just hook it up. All gain in the ML 1
is adjusted at the Inputs just as it should be. It’s OK to use all of
the analog Outputs at the same time and to use the analog and
the digital outputs together.
Digital Outputs
e ML 1 has one AES3 Digital Output, one SPDIF Digital
Output and one Optical Digital Output (also called TOSLINK).
AES3 is a 2-channel (stereo) digital audio interface found on
professional digital audio equipment. Each channel of the AES3
digital stream is treated independently within the ML 1.
Use the AES3 Output to:
• Feed audio to an RPM 88/44/22/26z or HAL2 to create a
2-channel digital “bus” between devices.
• Connect directly to the AES3 input of a digital mixer.
• Connect directly to the AES3 input of a digital recorder.
e SPDIF coaxial and optical digital outputs allow the
ML 1 to interface with a wide variety of commercial and semi-
pro equipment. Just verify that the device connected to the
ML 1’s SPDIF digital outputs can accept 24-bit audio at a 48
kHz rate.
All three digital outputs are always active and can be used
simultaneously.

Manual-3
RANE CORP. MADE IN U.S.A.
DIGITAL OUTPUTS
OUTPUTS
GAIN
ACN 001 345 482
COMMERCIAL AUDIO
EQUIPMENT 24TJ
R
100-240 V
50/60 Hz 7 WATTS
ML 1
MIC
LINE
MIC
LINE
2
AES3
COAXIAL
OPTICAL
OVERLOAD
SIGNAL
SIGNAL
S/PDIF
1
2
2
1
2
1
1
-
+
-
+
-
+
-
+
INPUTS
2
2
1
1
-
+
-
+
-
+
-
+
PHANTOM
POWER
48V
Security Cover
PHANTOM POWER
When the Phantom Power button is selected, two things hap-
pen. First, a red LED illuminates so that there is little doubt that
phantom power is on. Second phantom power is turned on only
for inputs that have the mic/line switch in the “MIC” position.
Microphones can be plugged into the XLR connectors or the
euroblock connectors and both connectors have phantom power
available. Microphones receive a full 48 volts of Phantom Power
from the ML 1.
MIC / LINE Switch
Phantom Power is only available on an Input when the Mic/
Line switch is in the MIC position and Phantom Power is turned
on — the input impedance for that channel is 2.6 kΩ. When
the Mic/Line switch is in the LINE position, phantom power is
disabled, the gain for the channel is reduced by 32 dB and the
input impedance for that channel is 96 kΩ.
GAIN Controls
e GAIN controls set the gain through the ML 1 for each
channel. e approximate gain when the Mic/Line switch is in
the either setting is shown in the gure above.
A security cover is included to cover just the GAIN controls
for those installations needing a little protection.
SIGNAL LEDs
ere is a green input LED for each channel on both the front
and back of the ML 1. ese light up when an input signal is at a
high enough level to trigger the LED. For the math inclined, the
amount of signal required to light the LED is equal to the nega-
tive of the ML 1 Gain minus 6 dBu.
e formula is: reshold dBu = – (Gain dB) – 6 dB.
So if the ML 1 Gain is set to 20 dB, the input LED thresh-
old is -26 dBu measured at the input jacks.
Another example: if the ML 1 Gain is set to -10 dB then the
input LED threshold is +4 dBu measured at the input jacks.
e bottom line is if there is an input signal present and the
gain of the ML 1 is set high enough, the green input LED of the
ML 1 should be on.
OVERLOAD LEDs
ere is a red overload LED for each channel on both the front
and back of the ML 1. e LED lights red if the output wave-
form clips, telling you to back down on the channel Gain to
prevent signal distortion.
POWER LED
is LED lights up yellow when the IEC320-C5 power jack is
properly receiving 100 to 240 volts from any power source in
the whole wide world. at should be just about everywhere you
would want an ML 1.
MIC
MIC GAIN LINE GAIN
+35
+40+30
+43+21
+47+20
+64+18
LINE
+3
+8-2
+11-9
+15-12
+32-14