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Crest Audio XRM - 12 - page 1
owner’ s manual X-Rack rack mount mix ers XRM - 12 Output Monitor Mix er ...
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Crest Audio XRM - 12 - page 2
1 Sa ve the carton and packing materials ! Should you ev er need to ship the unit, use only the original factor y packing. For replacement packaging, call Crest Audio’ s Customer Ser vice Depar tment directl y . 2 Read all documentation befor e operating your equipment. Retain all documentation for future reference. 3 F ollo w all instructions pr ...
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Crest Audio XRM - 12 - page 3
4 1 2 3 Master section P .29 Solo and Monitoring System, Output Masters. Front panel contr ols and rear panel connectors. Stereo Input channels p.19 Front panel contr ols and rear panel connections Mono Input channels p. 7 Front panel contr ols and rear panel connections table of contents Introduction Thank you and congratulations on y our purchase ...
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Crest Audio XRM - 12 - page 4
XRM owner’ s manual p. 4 XRM block diagram BAL XLR IN BAL LINE IN INPUT PREAMP GAIN 10 - 70 dB FOUR BAND EQ LEVEL LF LOW MID HI MID HF HPF LINE (MIC P AD) 26dB PA D PRE-SOURCE SELECT PRE SOURCE MUTE ? SOLO DC +10 MUTE INSERT SEND / RTN +48V ON EQ ON FADER AMP PRE-SOURCE BUFFER NO YES SOLO LEFT MAIN RIBBON CABLE - 40 WA Y XRM MONO INPUT MODULE 12 ...
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Crest Audio XRM - 12 - page 5
how to use this manual format This manual uses a format that is intended to be easy to read, yet technical for those who need to know all the details. For feature descriptions, this is done by devoting the left side of each page to 1) an ov er all module picture , 2) a block diagr am, and 3) a con- trol closeup. These images all per tain to the fea ...
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Crest Audio XRM - 12 - page 6
Mono input channel 1 p. 6 XRM owner’ s manual 500 500 500 500 500 500 500 500 500 500 500 6 500 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – LM LF HF HM EQ ON 1 600 1K 2K 3K 8K 400 5K 300 500 1K 2K 10 0 MIX SENDS 40 20 10 0 6 • 3 30 + – 40 20 10 0 ...
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Crest Audio XRM - 12 - page 7
Front panel featur es Line Input (Mic P ad) With this switch in the UP position, the input preamp cir cuit is set up to accept a mic-lev el signal. This signal is br ought in via the XLR mic-input connector located on the rear panel. The 1/4" TRS input jack is ignored. When the switch is depr essed, a Pad is inserted into the signal path and t ...
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Crest Audio XRM - 12 - page 8
Mono input channel 1 p. 8 XRM owner’ s manual 500 500 500 500 500 500 500 500 500 500 500 4 2 3 2 3 6 0 1 3 0 500 2 3 2 3 2 3 2 3 2 3 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 2 3 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – LM LF HF HM EQ ON 1 600 1K 2K 3K 8K 400 ...
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Crest Audio XRM - 12 - page 9
Front panel featur es Equalizer (EQ) Many audio signals coming into the console r equire some degr ee of correctiv e eq in order to be part of a good sounding mix. XRM offers a 4-Band EQ on each channel. The input EQ consists of the bands: High, High-Mid, Low-Mid and Lo w . The High and Low fr equency bands are shelving equalizers, each ha ve a boo ...
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Crest Audio XRM - 12 - page 10
p. 10 Mono input channel 1 XRM owner’ s manual 500 500 500 500 500 500 500 500 500 500 500 4 2 3 2 3 6 0 1 3 0 500 2 3 2 3 2 3 2 3 2 3 2 3 4 2 3 4 2 3 4 2 3 4 2 3 4 2 3 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – LM LF HF HM EQ ON 1 600 1K 2K 3K 8K 40 ...
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Crest Audio XRM - 12 - page 11
Front panel featur es Mix Send features The XRM is capable of generating 12 mono mix es, 6 stereo mix es, or a combination of both mono and stereo mix es. Each of the six Odd/Even pairs of sends can be configur ed as a stereo pair - the Odd pot becomes the le vel control, the Even pot becomes the pan pot. The changeover to stereo operation is contr ...
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Crest Audio XRM - 12 - page 12
p. 12 Mono input channel 1 XRM owner’ s manual 500 500 500 500 500 500 500 500 500 500 500 500 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – LM LF HF HM EQ ON 1 600 1K 2K 3K 8K 400 5K 300 500 1K 2K 10 0 MIX SENDS 40 20 10 0 6 • 3 30 + – 40 20 10 0 6 ...
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Crest Audio XRM - 12 - page 13
Front panel featur es Channel Level and Control This next set of contr ols allows the operator to contr ol and monitor the overall le vel of the channel signal. Mute Sw and LED The Mute switch kills the channel signal and pr events it fr om feeding any Mix Send pots. The mute- element itself is a FET transistor , allowing for timed, ramped on-off c ...
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Crest Audio XRM - 12 - page 14
p. 14 Mono input channel 1 XRM owner’ s manual PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH S4 S3 S2 S1 L R Input L R Split Out +48V On Chan Insert 1 XLRs Pin1 Lift Split Out Balanced Line Inputs For Stereo Channels S1 – S4 +48V On Balanced Input 1 +48V On Chan Insert 2 XLRs Pin1 Lift Split ...
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Crest Audio XRM - 12 - page 15
p. 15 Mono Input channel 1 Rear panel features +48 V On +48 volts DC is a pplied equally (thru current-limiting r esistors) to both pins 2 and 3 on the mic- input XLR connector . This feature is used with condenser micr ophones and active direct bo xes that requir e an external DC voltage (phantom pow er) in order to operate. F or dynamic or ribbon ...
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Crest Audio XRM - 12 - page 16
p. 16 Mono input channel 1 XRM owner’ s manual PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH S4 S3 S2 S1 L R Input L R Split Out +48V On Chan Insert 1 XLRs Pin1 Lift Split Out Balanced Line Inputs For Stereo Channels S1 – S4 +48V On Balanced Input 1 +48V On Chan Insert 2 XLRs Pin1 Lift Split ...
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Crest Audio XRM - 12 - page 17
p. 17 Mono Input channel 1 Rear panel features (continued): Split-Out XLR jack This male XLR jack is wired pin-to-pin to the f emale XLR input jack. In combination with the female XLR, it forms a passiv e , Y -Split of the input signal. This split-signal can be used to feed the mic input to another mix er (usually the FOH mixer), or to “mult” t ...
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Crest Audio XRM - 12 - page 18
Stereo input channel 2 p. 18 XRM owner’ s manual 500 M F F M 500 500 500 500 500 500 500 500 500 500 500 500 500 2 3 2 3 6 0 3 500 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – LM LF HF HM EQ ON S1 600 1K 2K 3 ...
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Crest Audio XRM - 12 - page 19
Front panel featur es The XRM featur es four , full-function Ster eo Input channels. These inputs are labeled S1 thru S4 and ar e located directl y left of the master section. Each stereo channel f eatures tw o mic preamps, so mic-lev el stereo sour ces can be pr ocessed on one common channel. In cases where just a mono sour ce is present, the SUM ...
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Crest Audio XRM - 12 - page 20
Stereo input channel 2 p. 20 XRM owner’ s manual 500 500 500 500 500 500 500 500 500 500 500 500 500 500 4 2 3 0 4 2 3 0 8 8 8 8 6 0 1 3 0 500 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 ...
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Crest Audio XRM - 12 - page 21
Front panel featur es Stereo EQ The Stereo Input channel has tw o parallel EQ circuits that ar e controlled by the same set of knobs. It is functionally identical to the Mono Input EQ. Many audio signals coming into the console r equire some degr ee of correctiv e eq in order to be part of a good sounding mix. XRM offers a 4-Band EQ on each channel ...
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Crest Audio XRM - 12 - page 22
Stereo input channel 2 p. 22 XRM owner’ s manual 500 500 500 500 500 500 500 500 500 500 500 500 500 500 4 2 3 0 4 2 3 0 8 8 8 8 6 0 1 3 0 500 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 4 2 3 0 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 ...
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Crest Audio XRM - 12 - page 23
Mix Send features The XRM is capable of generating 12 mono mix es, 6 stereo mix es, or a combination of both mono and stereo mix es. Each of the six Odd/Even pairs of sends can be configur ed as a stereo pair - the Odd pot becomes the le vel contr ol, the Even pot becomes the pan pot. The changeover to ster eo operation is contr olled by the STR P ...
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Crest Audio XRM - 12 - page 24
Stereo input channel 2 p. 24 XRM owner’ s manual 500 M F F M 500 T 500 500 500 500 500 500 500 500 500 500 500 500 3 3 6 3 500 3 3 3 3 3 3 3 3 3 3 3 PFL 40 20 10 0 6 • 3 30 + – 40 20 10 0 10 • 5 30 + – CHAN LE VEL 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – 0 15 15 88 + – LM LF HF HM EQ ON S1 600 1K 2K 3K 8K 400 5K 300 500 1K 2K ...
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Crest Audio XRM - 12 - page 25
Front panel featur es Channel Level and Control This next set of contr ols allows the operator to contr ol and monitor the overall le vel of the channel signal. Both sides of the Stereo channel (left & right) ar e simultaneously controlled. Mute Sw and LED The Mute switch kills the channel signals and pr events it fr om feeding any Mix Send pot ...
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Crest Audio XRM - 12 - page 26
p. 26 Stereo input channel 2 XRM owner’ s manual PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH PUSH S4 S3 S2 S1 L R Input L R Split Out +48V On Chan Insert 1 XLRs Pin1 Lift Split Out Balanced Line Inputs For Stereo Channels S1 – S4 +48V On Balanced Input 1 +48V On Chan Insert 2 XLRs Pin1 Lift Spl ...
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Crest Audio XRM - 12 - page 27
p. 27 Stereo Input channel 2 Rear panel features +48 V On +48 volts DC is a pplied equally (thru current-limiting r esistors) to both pins 2 and 3 on both the L & R mic-input XLR connectors. This featur e is used with condenser microphones and active direct bo xes that r equire an external DC voltage (phantom po wer) in order to operate. For dy ...
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Crest Audio XRM - 12 - page 28
Master section 3 p. 28 XRM owner’ s manual LAMP 12 V SOLO PWR LR 5 10 0 5 10 20 30 SIG PK 9 AFL 10 11 12 OUTPUT MASTERS SPEAKERS ON COMMON INPUT P H O N E S 1 3 5 7 10 0 9 28 6 4 M F F M 500 N ) 1 3 5 7 10 0 9 28 6 4 LEV LEV 0 9 6 12 3 6 9 3 15 24 18 21 500 9 – 10 11 – 12 5 10 0 5 10 20 30 SIG PK 5 AFL 67 8 OUTPUT MASTERS 5 – 67 – 8 5 10 ...
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Crest Audio XRM - 12 - page 29
Front panel featur es The XRM master section contains the contr ols and indicators for the Solo system, headphone and Monitor system, and Mix Master outputs. This section allows the operator to contr ol the ov erall operation of the mix er . A BNC lamp connector , supplied with +12 volts, is also located within this section. Each individual sub-sys ...
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Crest Audio XRM - 12 - page 30
Master section 3 p. 30 XRM owner’ s manual Block diagram- Common Input Module Block diagram- Mix Outputs AIN B BON A BLE - WAY ODD MIX BAL OUT MIX INSERT SEND / RTN XRM MIX P AIR 1 OF 6 P AIRS SHOWN ODD MIX AMP +10 PEAK (AFL) SIG SIG/PK LED POST F ADER ODD F ADER 60MM PRE F ADER ODD MIX BUS IN SOLO DC SOLO LEFT SOLO RIGHT AFL-ODD G R HPF HPF 40Hz ...
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Crest Audio XRM - 12 - page 31
Front panel featur es (continued) Common Input Often, a click track, tape pla yback or ref track, needs to be heard by all the perf ormers. An input chan- nel can be used for this, with all mix sends turned up to the same lev el. If an input channel is not a vail- able, the Common Input section can be used for that purpose. Input jacks, both TRS an ...
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Crest Audio XRM - 12 - page 32
Master section 3 p. 32 XRM owner’ s manual LAMP 12 V SOLO PWR LR 5 10 0 5 10 20 30 SIG PK 9 AFL 10 11 12 OUTPUT MASTERS SPEAKERS ON COMMON INPUT P H O N E S 1 3 5 7 10 0 9 28 6 4 M F F M 500 N ) 1 3 5 7 10 0 9 28 6 4 LEV LEV 0 9 6 12 3 6 9 3 15 24 18 21 500 9 – 10 11 – 12 5 10 0 5 10 20 30 SIG PK 5 AFL 67 8 OUTPUT MASTERS 5 – 67 – 8 5 10 ...
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Crest Audio XRM - 12 - page 33
Front panel featur es (continued) Master Fader - Mix Output Le vel Each of the twelv e mixes has its o wn 60mm master fader . This fader controls the main output of the mix and allows the operator to easily adjust the le vel sent to the perform- ers. Up to 10dB additional gain is a vailable. The faders are arranged in od d/even pairs f or ease of u ...
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Crest Audio XRM - 12 - page 34
Master section 3 p. 34 XRM owner’ s manual Bus Input to Mixes 1 2 3 4 5 6 7 8 9 10 11 12 Mix Insert 1 Mix Out 2 1 2 Mix Insert 3 Mix Out 4 3 4 Mix Insert 5 Mix Out 6 5 6 Mix Insert 7 Mix Out 8 7 8 Mix Insert 9 Mix Out 10 9 10 Mix Insert 11 Mix Out 12 11 12 MAIN RIBBON CABLE - 40 W A Y ODD MIX BAL OUT MIX INSERT SEND / RTN XRM MIX P AIR 1 OF 6 P A ...
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Crest Audio XRM - 12 - page 35
Rear panel features Main Outputs 1 thru 12 The XRM has 12 Mix outputs. Each output features the f ollowing connectors: Bus Input Mix Insert Main Out Bus Input Each of the 12 mix es has an associated Bus Input jack. This female XLR allows external signals to be mix ed into the XRM, either fr om another X-Rack mixer , or any other audio sour ce . Ele ...
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Crest Audio XRM - 12 - page 36
p. 36 Master section 3 XRM owner’ s manual Monitor Out Common Input to All Mixes Left (Odd) Right (Even) Controlled by SPEAKER - ON Switch ( Level Control on Front Panel ) Left (Odd) Right (Even) MONITOR OUT - L MONITOR / HP LEVEL L R HEADPHONE AMP SOLO LEFT SOLO MIX AMPS SOLO DC SOLO FEED L - R SOLO CONTROL LOGIC +9 6 3 0 -3 6 9 12 15 18 21 24 S ...
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Crest Audio XRM - 12 - page 37
p. 37 Master section 3 Rear panel features (continued) Other Inputs and Outputs Common Input A stereo input is pr ovided for feeding a common signal to all of the 12 mix buses sim ultane- ously . Fr om the stereo sour ce , the left signal will feed all of the odd mix es, the right signal will feed all of the e ven mix es. Both XLR and 1/4” TRS ja ...
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Crest Audio XRM - 12 - page 38
p. 38 Master section 3 XRM owner’ s manual SOLO LINK IN OUT Use 5-Pin DIN cable to interconnect SOLO Systems of X-Rack Mixers ON P O W E R A C IN 100 - 240V 50 / 60 Hz 80W X-RACK RACK-MOUNT MIXER NO USER SERVICEABLE PAR TS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL A VIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR A TTENTION! POUR É ...
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Crest Audio XRM - 12 - page 39
p. 39 Master section 3 Rear panel features (continued) Solo Link When using multiple X-Rack mix ers together , the solo systems can be linked. This Solo Link is compatible with the XR-20 and XR-24 Rack mix ers. A 5-pin, shielded DIN cable, wired pin-to- pin, can be used to link the Solo Audio and control signals betw een mixers. The “Sla ve” mi ...
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Crest Audio XRM - 12 - page 40
p. 40 T= IN + R= IN – S= CHS 12 3 1= CHS 2= OUT + 3= OUT – 2 1 3 1= CHS 2= IN + 3= IN – • XLR Female • • XLR Male • • 1/4” TRS Input • + 4dBu + 4dBu Passive + 4dBu + 4dBu – 60dBu + 4dBu + 4dBu + 4dBu T= Send R= Rtn S= GND • 1/4” TRS Insert • + 4dBu -2dBu T= OUT + R= OUT – S= CHS • 1/4” TRS Output • + 4dBu I/O Con ...
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Crest Audio XRM - 12 - page 41
p. 41 Specifications 4 Specifications Fr equency response +0/-0.5dB 20Hz-20kHz ref 1kHz (any input to an y output) THD+noise any output <0.01% THD 20Hz-20kHz@ +15dBu out Noise mic ein: better than –128dBu 20Hz to 20kHz 150 ohm sour ce , 60dB gain Bus Noise: better than -85dBu Crosstalk/Shutoff All Cr osstalk measurements: 20Hz to 20kHz BW Chan ...
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Crest Audio XRM - 12 - page 42
XRM owner’ s manual V ersion 1.01 May 28, 2002 Crest P/N D7000028 Crest Audio 16-00 Pollitt Drive Fair Lawn NJ 07410 (201) 475-4600 www .crestaudio.com ...
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