Ampeg B4R Specifications

Owner’s Guidefor theB4RBass AmplifierMade with Pride in the U.S.A. by

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11TroubleshootingIn the unlikely event that your B4R should malfunction, take a few minutes to troubleshoot it before you call for serv-ice. You can s

P/N 47-618-04 .111103Ampeg reserves the right to change specifications without notice.Made with Pride in the U.S.A. by Ampeg • ©2003 Ampeg, 1400 Ferg

2TABLE OF CONTENTSIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Features . . . . . . . . . . . . . . . . . . .

3An Introduction to your new Ampeg B4R Bass AmplifierThank you for making one of the best choices you will ever make for your musical career – choosin

4The Front Panel Controls and Their Use1. 0dB INPUT: The signal output from an instrument (activeor passive – typically passive) or a line level signa

5The Front Panel Controls and Their Use – Con’t.12. GRAPHIC EQ: This switch activates the graphic equaliz-er. When a footswitch is used, this switch i

6The Rear Panel23. CIRCUIT BREAKER: The B4R employs an AC line circuitbreaker to help protect against damage due to excessive cur-rent demands. If the

7The Rear Panel – Con’t.32. FOOTSWITCH: Connect a two button footswitch to thisjack for remote Mute and EQ On/Off control. On the stereo1/4” plug, the

8Connections:In the example shown below, the B4R’s two internal power amplifiers are bridged together to produce maximum output power. Set the Stereo/

In the example shown below, the B4R’s two internal power amplifiers will power both a high frequency cabinet and a low frequency cabinet. The crossove