Cerwin-Vega CUM-3, User Manual

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NOTE: For signal connection, the output RCA connectors should be connected to
the first component after the CVM-3, such as a crossover, equalizer, or amplifier.
Remember, the CVM-3 should go in front of any device with a crossover as it
needs a full range signal to function properly.
IF you get NO bass restoration or improvement ...this should be the first place you look
DASHMOUNT REMOTE
OUTPUT OF CVM-3 FEEDING
INPUT ON A 4 CHANNEL AMPLIFIER
(SUB CHANNEL)
FULLRANGE SIGNAL
INTO CVM-3
Connections & Wiring
6
7
Adjusting the Bass Controls
Specifications
Bass Output Controls
Maximum Input Level...................................................15V rms
Maximum Output Level.................................................13.2V peak
Frequency Response.....................................................10Hz -35KHz
T.H.D...........................................................................0.0025%
Signal to Noise Ratio....................................................133 dB
Balanced Input Noise Rejection..................................... 62 dB
Input Impedance..........................................................10K ohms
Output Impedance........................................................150 ohms
Power Supply ..............................................................High
headroom PWM
Power draw ................................................................ 150mA
The CVM-3 is a powerful bass component. This device is equipped with several / different bass output
selections, if you should need to change the settings, please use the chart below for guidance. We
recommended listen to the factory setting before changing your bass output settings.
Recommended Settings
Setting Amplifier Input Voltage Minimum Speaker Size
2.5 Volts 3.0 Volts or less
8"
5.0 Volts 5.0 Volts or less 10"
7.5 Volts 7.5 Volts or less 12"
10 Volts 10 Volts 15"
The bass response in a system is affected by four factors:
1. The acoustics of the vehicle
2. The location of the speakers
3. The source music
4. Speakers and speaker enclosures
Because of the variations that happen during the recording of music, we developed CVM-3 to restore any low
frequencies lost during the process; however, the acoustics of various environments and recordings are
different. The sweep control allows you to select a center frequency (the frequency most affected) between
27 and 63HZ. The “Wide” control then allows you to control the shape of the filter centered on the sweep
frequency( how “Narrow” or “Wide” you want the boost)