12AT7 REVERB DRIVER

It will not increase the power and clean headroom. You must log in or sign up to reply here. Since we mostly play our PR with distortion we like darker sounding speakers. If you think your amp and speaker are sharp and edgy this mod could be worth a try. Not familiar with the OP’s amp. Also I noticed that in the schematic Mesa’s reverb driver OT leads color code is the same as the Last edited by mooreamps; at

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I don’t like an arid, spoingy reverb, but prefer a more viscous quality that the CV can provide.

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Jul 20, 2. Most importantly the tone gets rougher and rawer with more mids and higher frequencies, aka presence. Here is one reference http: Jul 20, 1. I plan on mapping the circuit out by marking up the engel schematic has ss reverb. I replaced the cathode resistor for this tube the triodes are paralleled as a mod suggested elsewhere from 4. Listen to the blond Baja Tele and the ES You must log in or sign up to reply here.

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Then wire the ground switch in series with the NBF resistor. Not exact, but approximate. Home Forums Recent Posts. BobbyZJul 20, For an amp with onboard reverb, the impact would depend on the circuit. What was Leo thinking?

Good 12AT7 Tube for Reverb …

Much of this is due to an unefficient phase inverter circuit design. Keep the feedback loop and install a.

Still, many people consider the tone of the silverface Princeton Reverb just as good as the blackface. Secondly, the gain of the stage is not important since the drive signal for most reverb stages come after either the first or second gain stage in the pre-amp.

The older ’60s Mullard don’t have the full lows that the later-production ones do, and neither do any of the other NOS 12AT7 or I’ve tried including 3-mica Sylvania and GE -they’re noticeably more bright and dry. Jul 12at, 4. This tube gives me the quintessential reverb tone I’d personally prefer: Logical schematics Layout Click the images for full size versions. It gives good reverb depth what guys revverb to label as “dwell”. For amps with reverb you could use the reverb footswitch phono plug if you are not using it.

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It sounded very good. All are longtime members that stepped up to the invite to help out by volunteering their time and effort to help the membership experience on TGP stay on the even keel. The 6G16 brown Vibroverb used parallel 12AX7 triodes to drive its reverb. But there are also higher impedance drives. Your name or email address: IF you post the voltages around that driver circuit along with the resistors that are used, there are those here who can guide you as to what is ‘correct’ and ‘incorrect’.

Does it go in parallel with the anode, the transformer, with both or what?

The whole dynamic area can be within a narrow interval, i. Blue StratJul 10, It shouldn’t surprise anybody that the 12AT7 used for the revverb driver does make a difference.

Jul 10, 1. Altho it may not entirely answer the question, this article from PremierGuitar describes some nonAX7 preamp tubes: