Any one know any Blues Deville mods?

[Ryan]

I have a Fender Blues Deville 4x10, it's a '94, NOT a hot rod. Just having it re-tubed and re-biased and I'm wondering about a possible bass boost? OR any mods at ALL?
I can't find anything at ALL online. I found one for Bassman tone type mod but it basically entailed ripping out the whole circuit board and putting in one that is identical to a bassman. Anyone? Anything? Suggestions? Links?
ANYTHING?!?!?

[Mark Black]

I've got the very same model (maybe year too) and it has been very good to me for a long time now.

Not exactly a mod but based on my own amp and others I have worked on over the years it could probably use a comprehensive solder touch-up. On my own amp, knowing I would probably be keeping it & relying on it for a long time, I just retouched the solders 100% right after I bought it (used). Found lots of cracked ones along the way too.

Here again not a mod, but try experimenting with using the effects loop for outboard EQ, delay, and (gasp!) even distortion or booster effects. In my own rig I ended up running my entire floor pedal board with a simple 100K volume pot in a box at the tail end as a master volume. I found this eliminated the huge change in response when clicking in a distortion pedal in clean vs dirty channel selection. Of course I don't play extremely loud and never have the amp's clean or dirty volume controls above about "3" - anything higher overdrives the stomp box inputs.

Really I think the amps sound pretty good stock without anything in the loop (much better than the Hot Rod models) - just at a much higher volume than is appropriate for most club work.

The only thing that immediately comes to mind as a mod would be to convert to adjustable bias.

[Richard]

If you want a bass boost, turn down the treble. In Fender amps (and many others) increasing the treble also decreases the bass. If you cannot get the sound you need this way, here's a link to a schematic:

http://www.fender.com/support/amp_sc..._Schematic.pdf

This page has a lot of useful information:

http://studentweb.eku.edu/justin_holton/

Here is a tone stack calculator to get an idea of how the controls interact:

http://www.duncanamps.com/tsc/index.html

Keep in mind that this is merely modeling the tone stack and does not account for the rest of the signal chain but will show how changes affect the frequency response.

Changing R11 (the slope resistor) to a lower value (68k worked well in my amp) will allow a little more bass through. The biggest thing I did was change C7 (the middle capacitor) to a smaller value (0.015u should be a good start). This moves the upper range of the bass control a little higher. Stock, the bass control has little effect frequencies above 300hz or so. This will raise that a bit and get you more action from 100-300hz. The middle capacitor sets where the top end of the bass control's range is and at higher bass settings, starts rolling off volume at about the frequency of the open A string and higher. These parts cost less than $1 apiece so if you're comfortable playing around in your amp you can really tailor the tone to what you need.

Another route could be speakers and cabinet.

[rf7]

Check this page out:

http://www.diyguitarist.com/GuitarAmps/HRD_Mods.htm