June 22, 2007
New Buffalo Harp Amp
Rob at Buffalo Amps just sent me a picture of his latest.
He writes:
My Buffalo "Blues Harp" circuit is based from an super duper, ultra rare Gibson GA77 circuit that's not found on any website or even in the Gibson master service manual. It has been tweaked specifically for harp tone using a 12ay7 preamp tube, 6SL7 / 6SN7 split phase inverter and cathode biased dual 6L6's or quad 6v6's all hand wired in point to point circuitry. ~ 25-30 watts. 15" Weber smooth cone 15A150-O speaker with harp dust cap and a semi closed back to help reduce feedback.
All custom hand made in the USA using the finest parts available.
Buffalo Amplifiers.
¶ Friday, June 22, 2007
Rob at Buffalo Amps just sent me a picture of his latest.He writes:
My Buffalo "Blues Harp" circuit is based from an super duper, ultra rare Gibson GA77 circuit that's not found on any website or even in the Gibson master service manual. It has been tweaked specifically for harp tone using a 12ay7 preamp tube, 6SL7 / 6SN7 split phase inverter and cathode biased dual 6L6's or quad 6v6's all hand wired in point to point circuitry. ~ 25-30 watts. 15" Weber smooth cone 15A150-O speaker with harp dust cap and a semi closed back to help reduce feedback.
All custom hand made in the USA using the finest parts available.
Buffalo Amplifiers.
¶ Friday, June 22, 2007
Comments:
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I have improved my harp amp design by adopting the 6au6/12au6 pentode preamp tube. This little tube is found in some of the Kay, Alamo and Harmony practice amps. After experimenting and adjusting the circuit design to blend into my existing circuit, I found this little tiny pentode to have a HUGE tone that's just fat, fat, fat with more dB too! So basically, you get two different amps in one.
The preamp tube line up is now 6au6/12au6, 12ay7, 6sL7 (or 6sn7 for lower amp gain) and your choice of 6v6's or 6L6's.
This amp sounds great and with my "Inca face" semi closed back, feedback is reduced too. This is great harp friendly amp for you harp heads out there looking for more tone than what's out there.
Visit www.buffaloamps.com to learn more and send me an email for more details. I make your custom harp amp the way you want it!
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The preamp tube line up is now 6au6/12au6, 12ay7, 6sL7 (or 6sn7 for lower amp gain) and your choice of 6v6's or 6L6's.
This amp sounds great and with my "Inca face" semi closed back, feedback is reduced too. This is great harp friendly amp for you harp heads out there looking for more tone than what's out there.
Visit www.buffaloamps.com to learn more and send me an email for more details. I make your custom harp amp the way you want it!
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