CVM Series Analog Mixer: The Cerwin-Vega CVM-1224FX-USB 12ch
analog mixer is part of Cerwin-Vega's CVM line-up of professional audio mixers
which are designed for live performance and recording applications. Built using
premium-grade components that deliver precision audio performance, the mixer
features a commercial-grade metal housing for reliability and longevity. The
mixer's clear markings and color-coordinated knobs also allow for intuitive
operation, including fast adjustment and easy operation in low-light situations.
Its compact to fit almost any work area and built-tough to travel from venue to
12 Mixing Input Channels: The Cerwin-Vega CVM-1224FX-USB
features four Mono and four Stereo line inputs with six XLR microphone inputs.
- Channels 1-4: 3-pin XLR-type connectors are used for balanced low
impedance microphone inputs. Standard 1/4" phone jacks are used for balanced
or unbalanced line level signals, like electronic keyboards, synthesizers,
turntables, tape-decks, and line outputs from other mixers.
- Channels 5/6-7/8: 3-pin XLR-type connectors are used for balanced
low impedance microphone inputs. Standard 1/4" phone jacks are used for
unbalanced stereo line inputs.
- Channels 9/10-11/12: Standard 1/4" phone jacks and RCA-pin jacks
are used for unbalanced stereo line inputs.
Note: A phantom power (+48V) switch can be used for
easy connection of condenser microphones that typically require an external
Main & Monitoring Outputs: The mixer uses dual 3-pin XLR
connectors or 1/4" phone
jacks to deliver stereo output of the mixed signal to your power amplifier
driving your main speakers or powered speakers. The mixer also includes 1/4"
phone jacks to output a stereo mixed signal to your monitoring system. In
addition, there is a 1/4" headphone jack to monitor the mixed signal with a pair
of headphones. Gain & Level Control:
The Cerwin-Vega CVM-1224FX-USB features the
following Gain and Level controls.
- Gain Control: According to the level of the input
signal, use this Gain control knob to adjust the input to an appropriate
level for each channel. The best balance of S/N and dynamic range will be
achieved if you adjust the Gain control so that the peak indicator lights
occasionally. This control adjusts the channel's mic input sensitivity
between -50dB and -6dB and the line input sensitivity between -30dB and
+14dB. The mono/stereo combination input channels have a sensitivity of
+20dB to -20dB.
- Channel Level Volume: The Channel Level Volume
determines the level of the signal that is sent from each input channel to
the master mixing and effect buses. It is the settings of the input channel
faders that determine the mix, or the balance of sound levels between the
instruments or other sources connected to the inputs. When a channel is not
being used, its volume should be set at the minimum position to prevent the
addition of unwanted noise to the main program signal.
- Master Volume: This volume adjusts the final level of
the combined signals from all channels. A vertical row of ten LED shows the
continuous output level of mixer's MAIN Output (L/R).
Peak LED Indicators: The Peak LED indicators let you check
the level of the signal input to each channel. The peak indicator lights when
the input signal reaches 5dB below the channel's clipping point. This indicator
shows the level of the Post-EQ / pre-fader signal. If the Peak indicator lights
more than briefly on high-level transients, you should use the Gain control to
decrease the input sensitivity of the channel. If this does not work, reduce the
output level of the connected source.
3-Band EQ: The 3-Band channel equalizer is designed to
control the High, Mid, and Low frequencies of each input channel.
Frequency ||Type |
|High ||+/-15 dB ||12 kHz ||Shelving |
|Mid ||+/-12 dB
||2.5 kHz ||Peaking |
|Low ||+ -15 dB ||80Hz ||Shelving |
High Pass Filter: The Low Cut (HPF) switch toggles the
filter, with a cut-off frequency at 75Hz, to eliminate background microphone
Pan & Balance: The Cerwin-Vega CVM-1224FX-USB analog mixer
provides Pan controls for mono channels and balance for stereo channels.
- Pan: This control pans the channel signal across the
master L and R buses, thus determining the perceived position of the sound
from that channel in the output stereo sound field. If a PAN control is set
all the way to the left, for example, the sound from that channel will be
heard from the left speaker system only. If it is set all the way to the
right, the sound will be heard from the right speaker system only.
Intermediate settings will cause the sound to appear at corresponding
locations in the stereo soundfield.
- Balance: This control adjusts the balance or the L/R
position of the stereo input signal. Turning the BALANCE control to the left
of center moves the apparent source toward the MAIN L moves the source
toward the MAIN R bus.
Built-in Digital Effects: The CVM-1224FX-USB gives you complete access to 100 VFX presets that digitally energize vocals and sounds.
The VFX programs feature a 24 Bit Digital Effects processor with high quality,
studio grade effects like Delay, Chorus, and Reverb. With an optional foot
switch (sold separately) connected, you can use your foot to toggle the digital
effects on or off.
PFL (Pre-Fade Listen): The PFL (pre-fade listen) switch with adjacent indicator allows
listen to each channel before it reaches the main mix. When this switch is
depressed, the channel input signal can be routed to the PFL bus. This switch
allows you to monitor the pre-fader channel input signal through headphone
outputs and control room (monitor) outputs.
Tape In/Record Output: The mixer also features TAPE In and
REC Out RCA jacks, which enable users to directly connect to a CD/MP3 player or
an audio recorder. The Tape In consists of RCA pin jacks that input a stereo
sound source; use these jacks when you want to connect a CD or DAT directly to
the mixer for monitoring. The REC Out consists of stereo RCA pin jacks and send
the pre-fader signal from the mixer's master bus for recording by a connected
Sends & Return w/ Pre/Post Switch: The Insert, AUX and EFX
sends (all 1/4") allow connection to external dynamics, equalization and effects
units giving a high level of customization and returned to the mixer through its
Return inputs which consists of unbalanced 1/4" phone-type line input jacks. The
signal received by these jacks is sent to the MAIN bus and AUX bus. These jacks
are typically used to receive a return signal from an external effect (reverb,
delay, etc.). You can use the AUX and EFX controls to adjust the level of the
signal sent to the respective bus. The Pre/Post switch determines whether the
AUX signal is Pre or Post fader. Pre means not affected by the position of the
channel fader. Post means is affected by the position of the channel fader.
Since the EFX control is placed after the channel fader, the signal level will
be affected by the channel fader setting.
Alt 3/4 Bus: The ALT 3/4 bus consist of unbalanced 1/4" phone-type
jacks. Use these jacks to connect to the input jack of a digital recorder,
external mixer, or other such device. You can adjust the final level of the
combined stereo signal sent to the ALT 3/4 output jacks.
USB Interface: The built-in stereo USB audio interface allows you to
record and playback from a desktop or laptop computer using virtually any
digital recording software. Playback adjustment is made using the TAPE IN/USB
level knob. Connecting the audio mixer to your computer is a simple procedure
that takes just a few minutes. Since the Cerwin-Vega audio mixer is USB
compliant, you can use either a MAC (OS X) computer or Windows (7/Vista/XP) PC.
A standard USB Type-A to Type-B cable is required to connect the mixer to a
computer or laptop. The mixers USB interface supports up to 16-bit, 44.1kHz
Rack Mountable: The 12-channel analog mixer features detachable rack
ears for mounting in a standard 19" rack enclosure.