Instruction/ maintenance manual of the product B4R Ampeg
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Owner ’ s Guide for the B4R Bass Amplifier Made in the U.S.A. by.
2 Important Safeguards and Precautions: All Ampeg products are designed for continuous safe operation, as long as common sense is used and steps are taken to help avoid certain problems. Abiding by the following rules can help prevent damage to your amplifier , yourself and others.
3 An Introduction to your new Ampeg B4R Bass Amplifier Thank you for making one of the best choices you will ever make for your musical career – choosing one of the finest bass amps available, the Ampeg B4R.
4 The Front Panel Controls and Their Use -15dB 0dB GAIN INPUT BASS STYLE UL TRA MID TEXTURE MUTE PEAK 33Hz 80Hz 150Hz 300Hz 600Hz 900Hz 0 +12dB -12dB 1 2 6 7 5 8 9 3 4 18 1. 0dB INPUT : The signal output from an instrument (active or passive – typically passive) or a line level signal may be connected here by means of a shielded instrument cable.
5 The 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 is disabled. 13. LIMIT DEFEA T : The B4R employs internal limiter circuits to help keep the power amplifier ’s output clean at extreme volume levels.
6 The Rear Panel BI-AMP SPEAKER OUTPUTS HIGH OUTPUT LOW OUTPUT CHANNEL B CHANNEL A CHANNEL B CHANNEL A 350 WATTS/CH. @ 4 OHMS, STEREO 500 WATTS/CH. @ 2 OHMS, STEREO 2 OHM MINIMUM LOAD 1000 WATTS @ 4 O.
7 The Rear Panel – Con’t. 32. FOOTSWITCH: Connect a two button footswitch to this jack for remote Mute and EQ On/Off control. On the stereo 1/4” plug, the tip controls Mute and the ring controls EQ On/Off. When a footswitch is connected, the Mute switch (#3) can still be used; however , the EQ switch (#12) is dis- abled.
8 Connections: In the example shown below , the B4R’ s two internal power amplifiers are bridged together to produce maximum output power . Set the Stereo/Mono Bridge switch to the IN (Mono Bridged).
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 crossover point is determined by the Frequency control (#16).
GAIN BASS STYLE UL TRA MID TEXTURE MUTE TREBLE PEAK GAIN BASS STYLE UL TRA MID TEXTURE MUTE TREBLE PEAK GAIN BASS STYLE UL TRA MID TEXTURE MUTE TREBLE PEAK GAIN BASS STYLE UL TRA MID TEXTURE MUTE TREB.
11 T roubleshooting In the unlikely event that your B4R should malfunction, take a few minutes to troubleshoot it before you call for ser- vice. Y ou can save yourself time and money by doing it yourself, and often the problem is something quite simple.
P/N 47-618-03 . 07/99 Ampeg reserves the right to change specifications without notice. Ampeg is proudly Made in America. © 1999 SLM Electronics, 1400 Ferguson Avenue, St.
An important point after buying a device Ampeg B4R (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ampeg B4R yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Ampeg B4R - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ampeg B4R you will learn all the available features of the product, as well as information on its operation. The information that you get Ampeg B4R will certainly help you make a decision on the purchase.
If you already are a holder of Ampeg B4R, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Ampeg B4R.
However, one of the most important roles played by the user manual is to help in solving problems with Ampeg B4R. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ampeg B4R along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
