CARVIN ENGINEERING DATA
C2440 24CH C3240 32 CH 4 BUSS MIXER
OPERATING MANUAL
12340 World Trade Drive, San Diego, CA 92128
(619) 487-1600 (800) 854-2235
www.carvin.com
Congratulations on the purchase of your mixer. Your new 4 buss Concert Series mixer
demonstrates CARVIN’s commitment to producing the highest quality and most sophisti-
cated engineering in the audio industry today. The “C” series mixers are designed to be pro-
fessional mixers for use in live performance sound reinforcement systems & studio appli-
cations. Features include a full function 4 buss console with stereo out, mono out, and
grouped phantom power. The high quality construction will provide years of perf o r m a n c e
in and out of the studio. Enjoy your new mixer.
OVERVIEW
The MIC/LINE input channels feature Balanced XLR and TRS 1/4” inputs with grouped
phantom power for condenser mics. There are 3 bands of EQ with MID SHIFT and LOW
CUT switches, 2 pre or post fader AUX sends and 4 accessable post fader AUX sends on
each channel. The master section features 4 sub Groups faders, 2 Master Stereo faders,
a Center fader for mono. Also featured in the master section are the 6 AUX send Masters
and 4 stereo returns.
CHANNEL EQ WITH ACTIVE TONE CIRCUITS
The Concert Series incorporates 3 bands of EQ per channel. They offer smooth non inter-
active tone curves so your adjustments will sound natural and yet be effective. The high
(treble) and low (bass) “shelving” type controls cover the complete upper and bottom por-
tions of the audio range. The LOWCUT switch provides instant elimination of unwanted
low frequencies below 75 Hz. The MID EQ controls are a “band pass” type which peak at
2.5k Hz or 700 Hz (depending on the MIDSHIFT switch) for added presence to your mid
range tones . Because CARVIN uses “active” tone circuits, you are able to boost or cut
your tones without any signal loss to your sound.
RECEIVING INSPECTION—read before getting started
INSPECT YOUR MIXER FOR ANY DAMAGE which may have occurred during shipping.
If any 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 pos-
sible protection during shipment. CARVIN and the shipping company are not liable for
any damage caused by improper packing.
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 sepa-
rately. 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 man-
ual for your records. Keep your portion of the card and return the portion with your
name and comments to us.
INTERNAL SIGNAL ROUTING
A balanced mic or instrument plugs directly into the high quality Neutrik™ XLR con-
nectors and is then routed into the differential circuits for excellent hum and noise can-
cellation. As your signal continues within the console, a double-sided FR-4 (fire rated)
printed circuit board carefully guards the circuit traces with a copper shield running over
the traces. This reduces RF interference and crosstalk substantially. The printed circuit
board has plated-through holes which means every component is soldered securely in
three places (on the bottom, in the hole and on top). This offers unsurpassed compo-
nent security while reducing circuit resistance for pure dynamic sound.
HEADROOM
Headroom is very important when designing a mixer—especially for recording. Lack of
headroom will cause your sound to become distorted and muddy. This can happen when you
turn the volume too high, the input signal is too hot or excess EQ is added. With most mix-
ers, you have to reduce the input gain to fight headroom problems, but this just increases
noise. That’s why we have taken great care in the “C” series to make sure that each gain stage
is properly designed and balanced for more headroom along the entire audio path.
SWITCHING POWER SUPPLY
The Concert Series power supply offers unsurpassed rejection of noise and hum while
providing precision voltage for all preamp stages. The internal switching power supply
takes the 60 Hz AC line input and immediately converts it to 100kHz well outside of the
audio range. The 100kHz AC is sent through a transformer and converted to precision
DC voltages. Now you can go anywhere and never worry about inconsistent sound due
to fluctuating voltages because your mixer automatically switches internally to use 120
or 240VAC. (120VAC & 240VAC compatible with the proper AC cable) CARVIN has
spared no expense to achieve the best possible quality & performance.
For your records, you may wish to record the following information.
Serial No.________________________________ Invoice Date_______________
76-02440 798
C2440 SPECIFICATIONS:
Frequency Response:
Mic or Line Inputs: 20Hz-20KHz ±1dB
Total Harmonic Distortion: Less than .01%
Equivalent Input Noise:
150 ohm source: -112dBu
Output Noise:
less than -90dBu Master Line Out
(all levels minimum)
Output Headroom:
+28dB XLR bal, +20dB 1/4” unbal
Maximum Gain:
Mic in to Master Line Out: 74dB
Crosstalk:
Adjacent ch’s: -60db at 1KHz
Common Mode Rejection: -80db at 1KHz
Phantom Power:
All XLR Mic in (channel groups of 8)
Channel EQ.:
3 band active,
LOW: 80Hz
±15dB
MID: 2.5K or 700 Hz±15dB
HI: 11.5KHz ±15dB
Mic Input:
Balanced XLR input
Line Input:
Balanced 1/4” Phone Jack
Power Consumption:
40VA
Size:
14”D x 30”W x 3.1”H
C2440 BLOCK DIAGRAM
THREE BAND
CHANNEL TONE
CONTROLS
PAD
GAIN
MID
LOW
MIC
PRE
LEVEL
LEFT
TAPE IN
PAN
RIGHT
CHANNELS
line pad
(-11dB)
AUX
4-6
HEADPHONE
LEVEL
HEADPHONE
OUTPUT
RIGHT
LEFT
EFFECTS RETURNS
ONE AND TWO
HI
AUX
3-5
RETURN
LEVEL
L - R
METERS
INSERT
MIC
LINE
LO
CUT
MUTE
PFL
AUX 2
AUX 1
AUX
Unbal OUT
BAL OUT
HEADPHONE
AND METER
SWITCHES
GROUPS 1-4
LEFT AND RIGHT BUSS
Unbal OUT
MONO
BAL OUT
MONO
FADER
AUX 3 - 6
LEVEL
AUX 1 & 2
LEVEL
BAL TRS
Unbal
OUT
LEFT
FADER
FADER
PAN
L-R & C
PRE - POST
RIGHT
LEFT
RIGHT
TAPE OUT
SOURCE
SWITCH
AUX 3
AUX 4
