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Cerwin-Vega B4

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General Features:

  • Bomber Series 4-Channel Class D Digital Amplifier
  • RMS Power Rating:
    • 4 ohms: 80 watts x 4 chan.
    • 2 ohms: 150 watts x 4 chan.
    • Bridged, 4 ohms: 300 watts x 2 chan.
  • Ultra compact high density aluminium alloy chassis
  • Direct FET Power Mosfet Output Stage
  • IC audio driver provides superior overload protection
  • Dual Zone , operate two separate devices to two separate stages (front vs rear)
  • 2 or 4 Channel Operation
  • High-pass filter (front only): 25 - 250 Hz
  • Low-pass filter (rear only): 50 - 250 Hz
  • Bass Boost (rear only): 0 - 18 dB
  • Frequency Response: 10 - 35,000 Hz
  • Total Harmonic Distortion: 0.5%
  • Signal to Noise Ration: 85 dBA @1w
  • Damping Factor: >70 (50Hz @ 4Ω
  • Auxiliary for use when RCA connections are not available
    • For MP3 Players, iPhone or Android Smartphones, etc..
    • Only connect AUX OR RCA input, not both
  • 8 gauge power and ground wiring is required for installation
    • Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier
  • Dimensions: 4.02"W x 8.70"L x 1.4"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
Check out the Cerwin-Vega B4 Owner's Manual


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating

Browse 4 questions and 7 answers
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Why did you choose this?
Sonic Electronix Store
Loved the brand since the 80s
Ernie R on Aug 31, 2015
Small amp to put under seat cause room is lack of in a truck.
Mark L on May 24, 2015
My stereo installer recommended this to go with my Cerwin Vega Stroker amp. The small form factor makes it easy to mount and keep out of the way while delivering all the power I need to drive my components and coaxl speakers
Matthew D on Jul 16, 2015
Is it possible to wire directly into speaker inputs by cutting wires at harness prior to RCA inputs?
Chris c on Jan 14, 2015
Best Answer: Hello Chris,

I think what you are referring to is "High Level Inputs" , if so then Yes. However, no cutting of RCAs is necessary, because Cerwin Vega ships the B4 with a 'High Level Input Harness', pictured below. Is this what you mean?
Reply (1) · Report · Customer SStaff on Jan 14, 2015
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The Features and Specs page state this amp cannot be bridged, however the images show connections for bridging. Is the web page wrong?
James U on Feb 20, 2015
Best Answer: According to the manual it can be bridged stereo... 300watts x 2 @ 4ohms.. This is a great amp.
Reply · Report · peter m on Feb 20, 2015
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What are thr dimensions of the Cerwin Vega B4?
A shopper on Nov 16, 2014
Best Answer: Hello,

The dimensions on the site are correct; Dimensions: 4.02"W x 8.7"L x 1.4"H .
Reply · Report · Customer SStaff on Nov 16, 2014
· Add Answer · I Have This Question Too (0)

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Cerwin-Vega B4