Ampeg v4 b manual

For all intents and purposes, the B is the BN's big brother. The vastly increased headroom makes the B a bit less gritty than the BN, but both feature a very similar warm, punchy sound that is unmistakably Ampeg. This particular B was built sometime between and , and we aren't any more certain about its age than that. Condition is good, with some scratches on the control plate, some small tears in the tolex, non-original power switches, and some pitting and rust on the metal parts.

Amp is fully functional and sounds great. It's one of the loudest amps I've ever heard at 55W. Using just the extension speaker jack switches the amp to the 8 ohm transformer tap, while the 4-pin XLR pinout unknown would be for use with a 16 ohm cabinet, like the original Ampeg 2x15 cabinets of the era. Guitar World.

Home Reviews. Our Verdict. For Delicious all-tube tubbiness; righteous grind when pushed hard. Against Limited clean headroom in high-volume applications. The code usually consists of 6 or 7 digits such as where the first two or three digits is the EIA code for the manufacturer denotes CTS , the fourth digit and sometimes fifth digit denotes the year in this case it could be , 66, or 76 , and the last two digits denote the week of the year.

It is important to note that parts do not always contain EIA codes, especially those parts from the late s and early s. The Ampegs made between and did not have serial numbers and must be dated in the same way as the Michael-Hull models, specifically, by finding the EIA date codes on pots, transformers, multi-section "can" capacitors, and speakers.

For example, a Duette with serial number was made in 7 , during October 10 , and was possibly the st amp made that month. A Super Echo Twin with serial number was made in 4 , during April 04 and may have been the th amp made that month Caution is needed for dating amps from , , , and The serial numbers from these years were duplicated in , , , and , respectively. Taking the example Super Echo Twin above, its serial number alone could denote April or April A Mercury with serial number could be from September or it could be from the second serial number system implemented in Luckily, it is very easy to determine which year the first digit denotes.

The key is the model and the cosmetics. For instance, the Super Echo Twin was made in , but not in Likewise, an Ampeg from would not be covered in blue check vinyl whereas an amp from would have this covering.