Owner's Manual

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THREE BAND

CHANNEL TONE

CONTROLS

PA D

GAIN

MID

LOW

MIC

PRE

CHANNEL

FADER

LEFT

TAPE IN

RCA

PA N

RIGHT

CHANNELS

line pad

(-16dB)

PHONES

LEVEL

PHONES

OUTPUT

RIGHT

LEFT

EFFECTS RETURN

3L - 3R

RETURN 3

LEVEL

L - R

METERS

INSERT

MIC

LINE

CUT

MUTE

PFL

LEFT & RIGHT

BAL OUT

HEADPHONE

AND METER

SWITCHES

L - R

LEFT

RIGHT

EFF 1

EFF 2

PFL

MON 1 - 4

LEVEL

LEFT

FADERS

GROUP 1

MUTE

TAPE OUT

GROUP 2

GROUP 3

GROUP 4

MON 3

MON 4

MON 1

MON 2

GROUPS 1 - 4

1 - 4

BAL TRS

SWITCH TO

GRAPHIC EQ

RIGHT

REQ

LEFT

RIGHT

EFFECTS RETURN

4L - 4R

TAPE IN

RTN 4

LEVEL

SWITCH TO

GRAPHIC EQ

MON 1 & 2 ONLY

PFL

MONO

BAL OUT

RIGHT

LEFT

ASSIGN

EFF SNDS

1 & 2

DSP x 2

MON 1 - 4

L & R

MONS 1 - 3

FADERS

LEFT

RIGHT

EFF 1

EFF 2

PFL

GROUP 1

GROUP 2

GROUP 3

GROUP 4

MON 3

MON 4

MON 1

MON 2

SIGPEAK

STEREO

IN 1

IN 2

MON 1

MON 2

MON 3

MON 4

EFF 2

EFF 1

CARVIN ENGINEERING DATA C844, C1644(P), C2444, C3244 4-BUS MIXER OPERATING MANUAL

12340 World Trade Drive, San Diego, CA 92128

carvin.com (800) 854-2235

76-02444 0703

C1644 BLOCK DIAGRAM

MONO

0 0 0

010

RTN 3 MON 2MON 1 MON 4RTN 4 MON 3

TAP E INRETURN MONITORS

010

MONO

L-R

+18

+12

PEAK

POWER

PFL

PHONES

EQ 1

LEFT /

MON 1

EQ 2

RIGHT /

MON 2

CONCERT SERIES

C1644

010

LEFT

RIGHT

LEFT

RIGHT

LEFT

RIGHT

LEFT

RIGHT

125 250 50063 1K 2K 4K 8K 16K

–12

+12

12-

12+

–12

+12

12-

12+

TAPE IN

TAPE OUT

MON 1

423

PHONES

EFF 1 3L 3R

RETURN

MONO

MON 2 MON 3

RTN 4

MON 4

EFF SW

EFF 2

GROUPS

METERS

1234LR

PFL PFL PFL PFL

1-2

3-4

MON

43218765

87654321

LINELINELINE LINELINELINELINE

86543217

1- 8

PHANTOM

POWER

MICMICMICMICMICMICMIC MIC

INSERT INSERT INSERT INSERT INSERT INSERT INSERT INSERT

121110916151413

161514131211109

9-16

PHANTOM

POWER

MIDMIDMIDMIDMIDMIDMIDMID

HIHIHIHIHIHIHIHI

FREQFREQ FREQFREQ FREQFREQ FREQFREQ

PFL

MUTE

3-4

1-2

L-R

100 5k

010

PANPANPA NPA NPA NPA NPANPAN

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

050

GAIN

LO CUT

LINE

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

LOW LOW LOW LOW LOW LOW LOW LOW

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

LINELINELINE LINELINELINELINE

MICMICMICMICMICMICMIC MIC

INSERT INSERT INSERT INSERT INSERT INSERT INSERT INSERT

MIDMIDMIDMIDMIDMIDMIDMID

HIHIHIHIHIHIHIHI

FREQFREQ FREQFREQ FREQFREQ FREQFREQ

PFL

MUTE

3-4

1-2

L-R

100 5k

010

PANPANPA NPA NPA NPA NPANPAN

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

PEAK

SIG

050

GAIN

LO CUT

LINE

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

LOW LOW LOW LOW LOW LOW LOW LOW

PFL

MUTE

3-4

1-2

L-R

100 5k

010

050

GAIN

LO CUT

PARAMETER

ECHO

REGEN

TIME

REVERB

DAMPING

DECAY

FLANGE

SPEED

DEPTH

CHORUS

REV LEVEL

DEPTH

SELECT

MUTE

OFF

1MON 2MON

OFF

1MON 3MON

24-BIT DUAL STEREO EFFECTS

SELECT PARAMETER

101

EFFECTS 2

TO MONITORSRETURN

EFFECTS 1

100

161514131211109

4444 4444

3333 3333

2222 2222

1111 1111

MON MON MON MON MON MON MON MON

EFFEFFEFFEFF EFFEFFEFFEFF

1111 1111

2222 2222

4444 4444

3333 3333

2222 2222

1111 1111

MON MON MON MON MON MON MON MON

EFFEFFEFFEFF EFFEFFEFFEFF

1111 1111

2222 2222

C1644

CONCERT 44 SERIES The C844, C1644(P), C2444 and C3244 feature 8 to 32 channels with true 4-bus

performance. The C1644P adds four 300 watt power amplifiers built into our ROAD WARRIOR case. Never before

have so many features been packed into such a rugged, compact USA made mixer. The best feature of the Concert

44 Series is the sound. Sound that is pure and quiet enough for digital recording studios. Everything is log-

ically laid out making the powerful features simple to use. The knobs have been located so that adjustments

can be made quick and easy with visible pointers showing you the status of your mix at a glance.

TRUE 4-BUS DESIGN The Concert 44 Series offers increased mixing flexibility over standard stereo con-

soles by letting you assign channels to one of the 4 sub groups or L/R. This allows you to mix the entire drum,

horn, choir, etc. into one sub group, which feeds the L/R faders. This is an easy way to control the volume of

grouped mics and inputs. If you don’t need subgrouping, you can depress the L/R channel button and the

channel goes directly into the L/R output like a standard stereo console. All 4 sub group outputs have bal-

anced outputs for long cable runs.

TWO EFFECT SENDS / TWO 24-BIT EFFECT PROCESSORS Two built-in 24-Bit effects, each offering

256 stereo effects, is a first in a 4-bus mixing console. Since there are two, you no longer have to choose between

that great vocal reverb with delay and that awesome guitar chorus - you can have both! Each processor offers

lush REVERBS, rich CHORUSES, thick textured FLANGING and pristine ECHOES with fully adjustable parame-

ters for damping, decay, depth, speed, time and regeneration. Both processors can be sent back into the moni-

tor mix so the performers can hear exactly what the audience is hearing.

FOUR MONITOR SENDS Every channel has 4 MONITOR sends with MASTER output level controls. Monitor

send jacks are balanced TRS.

3 BAND EQ/MID SWEEP The superb EQ system gives extended 15 dB boost and cut tone shaping. The

LOW frequency control builds bass starting with 20 Hz through 80 Hz for a solid non-flabby low-end. The exclu-

sive offset of the MID FREQ. control ends the confusion of selecting your mid frequency from 100 Hz to 5kHz.

The MID cut and boost control adjusts the gain to the perfect mid-dip or boost curve to enhance all instruments

and vocals. The 11.5k Hz HI treble control adds sparkle to your top-end without adding harshness. Both the

LOW and HI are “shelving”, which means they are effective from 20 Hz and up to 20k Hz. The LO CUT switch

eliminates stage rumble or other unwanted low frequencies that would normally rob power from your woofers.

TWO 9 BAND EQUALIZERS Precision equalizers provide precise 1 octave adjustments to tune in your over-

all sound and control feedback. Unlike one stereo equalizer, two independent 9 bands offers total flexibility.

With two convenient buttons, you can assign either EQ to the R/L outputs or to the 1/2 monitor outputs. Center

frequencies are 63, 125, 250, 500, 1k, 2k, 4k, 8k & 16k Hz.

RECEIVING INSPECTION—read before getting started

INSPECT YOUR MIXER FOR DAMAGE which may have occurred during shipping. If damage is

found, please notify the shipping company and CARVIN immediately.

SAVE THE CARTON & ALL PACKING MATERIALS. In the event you have to re-ship your unit, always

use the original carton and packing material. This will provide the best possible protection during

shipment. CARVIN and the shipping company are not liable for damage caused by improper pack-

ing.

SAVE YOUR INVOICE. It will be required for warranty service if needed in the future.

SHIPMENT SHORTAGE. If you find items missing, they may have been shipped separately. Please

allow several days for the rest of your order to arrive before inquiring.

RECORD THE SERIAL NUMBER on the enclosed warranty card or below on this manual for your

records. Keep your portion of the card and return the portion with your name and comments to us.

CHANNEL FEATURES Every channel has a full balanced XLR and LINE (1/4”) preamp with an INSERT

jack for a compressor or EQ that also serves as a DIRECT OUT when plugged half way. The PAN con-

trol directs the channel into the L/R output or any of the 4 sub groups after depressing the appropriate

ASSIGN switches. A PFL (pre fader listen) switch allows you to hear the channel before the fader is

turned up in the headphones. A solid “on” condition of the PEAK LED indicates that the MUTE switch

has been activated which turns the channel off including all monitor and effect sends. When flashing

during use, the PEAK LED also lets you know when to adjust the channel’s GAIN control to prevent chan-

nel cliping. The SIGNAL LED lets you know that a signal is coming through the channel starting at –20

dBu. A silky smooth 60mm audio taper FADER delivers professional fade-outs. The PHANTOM power

switches provide power through the XLR connectors for use with condenser mics like the Carvin CM90E

in groups of 8 channels.

MASTER FEATURES Each of the 4 SUB GROUP faders can be switched to the R/L outputs or used

independently through their own balanced output jacks. Each of the sub group’s PFL switches allow you

to listen to the sub groups in your headphones before it is turned up. The R/L MAIN output faders are

independent for added flexibility over a single stereo fader. A MONO control sums both the R/L outputs

together for a center, side fill or subwoofer output. The stereo HEADPHONE control tracks the METER

switches which allow you to look and listen from the L/R, MONO, MONITOR 1/2 and 3/4 outputs and

channel PFL switches. The master section also features 2 EFFECT SENDS, 4 RETURNS and RCA TAPE

IN/OUT jacks. All 4 SUB GROUPS, 4 MONITORS, XLR L/R and MONO outputs are balanced. A FOOT

SWITCH jack turns both effects processors on or off remotely with the optional FS22 foot switch.

SWITCHING POWER SUPPLY Our exclusive 125k Hz switching power supply eliminates trans-

former noise. Like a laptop computer, go anywhere in the world and not worry about power because

you can run on any voltage from 90 to 250VAC. (except C1644P)

SUPERB SOUND State-of-the-art low impedance, low noise preamps are featured on every channel.

The balanced common mode rejection is better than 70 dB to eliminate cable noise. All main outputs are

balanced to guard against system noise. The near theoretical limit on distortion has been achieved with THD

below .01% to guarantee the purity of your sound, ensuring it will be dynamically open and transparent.

ENGINEERED TO LAST Hidden deep in the heart of these San Diego, CA made mixers is the SMT con-

struction that utilizes surface mounted components to prevent malfunctions caused by vibrations. Sealed

controls and switches guard against the outside elements while heavy-duty jacks provide a positive con-

nection to your cables. Fire retardant FR-4 military spec circuit cards feature double-sided copper to elim-

inate radio frequency interference. Precision 1% tolerance components guarantee your settings will be

accurate every time. The Concert 44 Series is built to strict standards.

For your records, you may wish to record the following information. Serial No._________________________ InvoiceDate___________

Optional Accessories:

C844: CB800 Heavy padded bag FS22 foot switch for all models

C1644:

CB1600 Heavy padded bag AN1600 Anvil™ hard case

C2444: CB2400 Heavy padded bag AN2400 Anvil™ hard case

C3244: AN3200 Anvil™ hard case

CONCERT 44 SPECIFICATIONS:

For C1644P power amp specifcations see back page

Mic Input: Balanced XLR, Mic Imp. 150Ω

Line Input: Balanced 1/4” Jack Imp. 10k/20k bal.

Frequency Response: Mic or Line Inputs: 20Hz-20KHz ±0.5dB

Total Harmonic Distortion: Less than .01%

Equivalent Input Noise: 150 ohm source: -117dBu

Output Noise: less than -90dBu Master Line Out

Output Headroom: +28dB XLR bal, +20dB 1/4” unbal.

Maximum Gain: Mic in to Master Line Out: 74dB

Crosstalk: Adjacent channels: -60db at 1KHz

Common Mode Rejection: -75db at 1KHz

Phantom Power: All XLR Mic in (channel groups of 8)

Channel EQ.: 3 band active,LOW: 80Hz ±15dB

MID: 100Hz to 5kHz ±15dB

HI: 11.5KHz ±15dB

9 Band Graphic EQ.: ±12dB 63, 125, 250, 500, 1k, 2k, 4k, 16k

Mixers Only: 90 to 250VAC 50-60Hz, 20 to 50VA

Powered C1644P: 120VAC 60Hz or 240VAC 50Hz model,

1200VA

Size: C844: 14.25”D x 14.5”W x 3.25”H

C1644: 14.25”D x 22.25”W x 3.25”H

C1644P: 16”D x 24”W x 9”H

C2444: 14.25”D x 30”W x 3.25”H

C3244: 14.25”D x 38.1”W x 3.25”H

Summary of content (6 pages)

PAGE 1
CARVIN ENGINEERING DATA LINE LINE LINE LINE LINE LINE LINE MIC MIC MIC MIC MIC MIC MIC PHANTOM POWER LINE LINE LINE LINE LINE LINE LINE LINE MIC MIC MIC MIC MIC MIC MIC PHANTOM POWER 1- 8 C844, C1644(P), C2444, C3244 4-BUS MIXER GROUPS LINE PHONES EFF SW 1 2 3 4 MON 1 MON 2 MON 3 MON 4 EFF 1 EFF 2 MIC TAPE OUT R L INSERT INSERT INSERT 5 6 7 8 0 50 GAIN LO CUT 0 50 GAIN LO CUT HI 0 50 GAIN LO CUT HI 0 50 GAIN LO CUT HI 0 50 GAIN LO CUT HI
PAGE 2
C844, C1644(P), C2444 & C3244 4-BUS MIXERS QUICK START UP If you’re like most new owners, you’re probably in a hurry to plug your mixer in and use it. Here are some brief instructions to get you going quickly. With the mixer unplugged and the unit turned off, complete the following procedures: 1. CONNECTING AC POWER TO YOUR MIXER • The mixer can be used with 120 or 240VAC (it automatically switches internally except for C1644P) • Use only a grounded (3 prong) power outlet to prevent a shock hazard.
PAGE 3
MASTER SECTION 18. TWO STEREO 24-BIT EFFECTS The internal 24-BIT stereo processors receive signals from the EFF 1 / EFF 2 channel controls. If the adjacent PK (peak) LED flashes, reduce the level from the channel EFF 1 / EFF 2 send controls. A “solid” PK LED will show EFFECTS 1 or 2 have been muted either by the MUTE switches (#44) or by the optional FS22 footswitch (#38). The RETURN control will adjust the volume level of the selected effects.
PAGE 4
SOUND CHECK In a live sound reinforcement system, the input signals to the mixer will come from the microphones and instruments. Each microphone or instrument must be connected to one of the mixing console inputs. It is preferred to have as many of the stage instruments as possible plugged into the mixer. This allows for the best overall control of the instruments as they are mixed together and then amplified by the system.
PAGE 5
INSERTS AND DIRECT OUTS 1/2 INSERT DIRECT OUT FULL INSERT FULL INSERT The insert jack is a Tip Ring Sleeve (TRS) 1/4” phone jack, where the tip is the send, the ring is the return and the sleeve is ground. When used as an insert point or in full INSERT mode, the channel is opened up to allow an external piece of equipment to be inserted into the channels signal path.
PAGE 6
1 C1644P REAR PANEL C1644P 1200w Powered Mixer 3 C1644P REAR PANEL FEATURES: 1 & 2. SPEAKER OUTPUTS The 1/4” JACK (1.), and TWIST-LOK JACK (2.) of each amp are wired in parallel. The minimum load for each amp is 4 OHMS. Chaining together more than one speaker on an output is fine as long as the total impedance is not below 4 ohms. If the speaker load is lower than 4 ohms, the amp may go into one of the PROTECT modes.