Dumble-ized Blonde Fender circuit...sort of

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Fischerman
Posts: 819
Joined: Thu Dec 07, 2006 3:47 pm
Location: Georgia

Dumble-ized Blonde Fender circuit...sort of

Post by Fischerman »

Short version: Look at this schematic and tell me if you see any glaring problems. One issue that I'm completely in the dark about is whether I'll have enough reverb signal to mix with the dry...or too much...I just have no clue here.

Long version: Long time ago I built a tweeked-for-guitar version of the Fender Blonde Bassman (6G6-B) Bass channel. I thought it sounded better than the regular BF Normal circuit that shared the same chassis (BF Bassman). So I thought...why not Dumble-ize it and try to add reverb. I've never messed with amp reverb at all...ever. I've rarely ever USED amp reverb for that matter. I sort of blended BF Fender combo reverb with a Dumble Reverb schematic I saw here. My main concern is whether my Reverb signal will be the right level to mix with the dry signal. But I really have no clue about amp reverb so there may be all sorts of errors/potential problems.

The SSS thread got me thinking about trying to do my own (read: ripped off from different sources than others ripped their stuff from :P) 'Clean Machine' and since I like this circuit I thought I'd start with it. The tone stack Bass and Treble controls are way more responsive than the BF or Skyliner (I've never tried a Mid control with this circuit yet)...especially the Bass control...very responsive throughout the sweep. But this stack has TONS of loss so it should be more responsive...I think I have gain to spare so I'm not really worried about the TS losses (besides...it sounds good to me).

Some other questions:
Is there supposed to be a bright cap across the Return Level pot? If so, what value?
Due to the output Z of the cathode follower...you use a 250K-A Volume pot and the tone stack values are scaled down too. So...what size resistors should I use for the Deep switch (in-place of the usual 270K and/or 10K tail)? I guessed at 100K for the 270K but might I have to use two different values (one value off the bass pot and another value off the volume pot)?
I didn't Skyliner-ize the Mid control...I'll probably experiment with that...not sure what effect that has on the Deep switch.

Here tis (Steel String...Rusty Nail...get it?):
[img:800:648]http://i108.photobucket.com/albums/n4/m ... ailPre.jpg[/img]
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