Ampeg B-15N Portaflex, * LOCAL PICKUP ONLY Model Tube Bass Amplifier (1967), made in Linden NJ, serial # 052859, blue checked Tolex finish.
Overall this is a very nice original example of the all-time classic recording bass amp, Ampeg's B-15N. From its inception until today, this model has been the preferred in-house bass amplifier for the great majority of professional studios, and was a lower volume gig standard as well. We see a decent number of period B-15s, but most have seen decades of use and often show heavier wear and/or modifications. This early 1967 model is easily one of the cleaner we have had, a very well cared for and still wonderful sounding amp.
Height is 29 in. (73.7 cm.), 21 in. (53.3 cm.) width, and 13 3/4 in. (34.9 cm.) deep.
Externally, this 55+ year old amp is very well-preserved. The signature "Blue Check" Tolex is in fabulous shape, with minimal visible wear. There is some light scuffing to the tops of the transformers and tube cage from decades of the amp being flipped and stowed in the cabinet. The grille cloth shows some light staining but is otherwise taut and free of any notable tearing or fraying. The chassis and control panel is very clean with all the stenciled lettering nicely intact. The original Ampeg logo from the upper front of the cabinet is present, and the amp comes with the original dolly as well. The handle is a correct modern repro; this part is quite often replaced by now as the originals usually harden and eventually crumble with time.
Internally, this amp remains nicely original. The speaker is the original CTS-made 15" ceramic square magnet unit that came stock in many of these, marked 137-628 dating it to the 28th week of 1966. The amp has seen our typical servicing and maintenance, including replacement of all electrolytic capacitors, adding a grounded 3-prong power cord, cleaning of all sockets, pots and jacks and biased to spec.
Other than these minor points this amp is in great shape and sounds truly fabulous. The speaker packs a nice even punch, even at higher volumes. This is a lovely example overall; a true classic amp and perennial studio staple. Overall Excellent - Condition.
