Dating vintage ampeg amps

(shown with black classic grille) More info V-4B The Ampeg V-4B 100W All-Tube Bass Head is a remarkable reissue of the legendary 1971 original, delivering the pure tube tone and unmistakable grind that earned the classic a place in bass history. Join Ampeg guy Dino Monoxelos as he decodes the meaning of the Ampeg model numbers.“It cuts through nicely and every note is clear and precise. When the volume is bumped up a bit, the amp starts to get a little hair going and the Stones-type tones come out – classic rock to the bone.

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After a couple of gain stages each provided by the two triodes of a 12DW7 in channel 1 and a 12AX7 in channel 2 respectively, the treble and bass pots are sandwiched between two more gain stages provided by a second 12DW7, with the midrange control and related three-way frequency switch brought in after that stage, before a quirky 6K11 tube (a triple triode, meaning it contains three individual amplification stages) used as gain recovery.

A 6CG7 tube serves as reverb driver, while the second half of that third 12DW7 drives a 12AU7 phase inverter into the big 7027A output tubes.

The 1972 Ampeg VT-22 is the 2×12″ combo of the V Series, and was the sibling, circuit-wise, of the V-4 head and V-40 4×10″ combo.

All used four 7027A output tubes to generate a conservatively rated 120 watts, which can often top 140 watts downhill with a good tailwind… And though we say this was a rock-intended amp, it was rock as intended it – bold, punchy, clear, and ungodly loud. Perhaps fewer players than back in the day, but, back when it was introduced, it proved to be exactly what plenty of touring pros required, most notably the Rolling Stones.

More info Heritage B-15N Designed and assembled in the U. A., the Heritage B-15N delivers the sought-after B-15 performance in a new, all-tube design featuring reliable PCB architecture and a beautiful black finish.

More info Heritage SVT-CL Designed and assembled in the U. A., the Ampeg Heritage SVT-CL delivers 300W of all-tube power, featuring perfectly-matched, premium components and unmatched construction. More info Heritage SVT-CL w/SVT-212AV The Ampeg Heritage SVT-CL with the SVT-212AV 2x12″ bass enclosure delivers pure Ampeg tone in a ported cabinet design that bridges the gap between fast transient response and rich low end.The Altec 417Bs would have been great-sounding speakers, and at 75 watts each, capable of withstanding the VT-22’s bluster for quite some time, but there are plenty of excellent high-powered replacement speakers available today that can eek out a little more sonic righteousness from this amp, when compared to either of its other two original-equipment drivers.The VT-22 had its own rendition of Ampeg’s famously lush reverb, and, while it’s an outright rocker at heart, it’s still a great jazz amp, too, as is Ampeg’s long-standing forte, with rich, full clean tones when you keep the volume reined in, and a stout enough voice to contain the potential boominess of a big-bodied archtop.This all-tube Portaflex head provides a harmonically rich and studio-worthy 50 watts of pure Ampeg tone.More info Portaflex PF-50T The legendary tone and portability of the all-tube Ampeg Portaflex amplifiers is faithfully reproduced in the PF-50T.It’s all laced together across several printed circuit boards, but rugged printed circuit boards with broad tracks and sturdy mountings.

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