![]() ![]() ![]() Amps with black control panels often had white control knobs. White control nomenclature was silk screened over a base coat of black paint on the top of the chassis. Tom Jennings, the president of Vox, resented having to pay the 1 per amp licensing fee charged by Hammond Accutronics fee for the use of their patented reverb pan. Vox AC10 3x10 and Domino Super Reverb Piggy Back amplifiers were not equipped with the traditional Vox anodized control panel. The info I have read (indicates that: The AC10SRT used the infamous Vox crystal phono cartridge based reverb pan. I have also seen an AC10SRT head that had a red anodized control panel and black control knobs. When installed in a Vox AC10SRT head, the AC10 Super Reverb Unit chassis most frequently incorporated a gray anodized control panel with five black control knobs. A close comparison of the AC10 Super Reverb Unit schematic (OS/026) and AC15 schematic (OA/031) reveals that both models have similar electronic components and plate voltages in their power amp circuitry, suggesting that the AC10 Super Reverb Unit chassis is actually capable of producing about 15 watts RMS. Super Rare Pearl PFT101 Duo Reverb 1980 Twin Reverb Clone Black Tolex Natural Relic 100 Watts Solid State MIJ Made in Japan. Like its bigger brother, the AC-15, the AC10 Super Reverb Unnit power amplifier section was powered by two EL84 power tubes in a Class A, cathode biased, no negative feedback amp circuit. The reverb pan returns into the grid (pin7) of V3a and that is the reverb signal. What i see, anyway, is that the signal out from V2a goes into ghe grid (pin2) of V3b, which outputs into the reverb pan. The AC10 Super Reverb also incorporated the JMI Vox "phono cartridge reverb" system, a feature not included on the original AC10 design. It seems oddly drawn, but i think its correct. The preamp circuitry for the AC10 Super Reverb unit eliminated the odd-ball ECF82 and often microphonic EF86 preamp tubes from the original AC-10 design, replacing them with more traditional ECC83 (12AX7) and ECC82 (12AU7) tubes. ![]() The newly designed "AC10 Super Reverb Unit" and the original "AC/10 Amplifier N o 3" circuits were produced concurrently by Vox in 19. While this circuit and chassis would be included in the Vox AC10SRT head, AC10 3x10 combo amp and the JMI Domino Super Reverb Piggy back amplifiers, it bore little resemblance to the original and namesake Vox AC10 dual channel chassis documented on JMI schematic "OS/008 AC/10 Amplifier N o 3," dated September 9, 1960. JMI introduced a new 10 watt, single channel guitar amplifier design on JMI schematic "OS/026 AC10 Super Reverb Unit," dated January 27, 1964. ![]()
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