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View Full Version : converting a deluxe reverb silverface 1979 to a pro reverb

takis
02-12-2007, 03:54 PM
i have one deluxe but i think that i need more headroom!
my tech told me that its not difficult to convert my deluxe to a pro reverb because the circuits are very common and also these silverfaces are very easy for mods!
but i wanted to here some opinions from you also about some of these mods,tubes,transformer etc...

thanks very much for your time!:AOK
Blue Strat
02-12-2007, 04:13 PM
Get Allen Amplification upgrade transformers and you're basically done.
Mullet Kingdom
02-12-2007, 04:28 PM
i have one deluxe but i think that i need more headroom!
my tech told me that its not difficult to convert my deluxe to a pro reverb because the circuits are very common and also these silverfaces are very easy for mods!
but i wanted to here some opinions from you also about some of these mods,tubes,transformer etc...

thanks very much for your time!:AOK

I would just trade up for a Pro Reverb.
unklmickey
02-12-2007, 04:33 PM
I would just trade up for a Pro Reverb.


+1 :AOK
takis
02-12-2007, 04:38 PM
I would just trade up for a Pro Reverb.

hmmm...i leave in greece...not so easy to find here a pro reverb man...i m trying but...:)
chocopower
02-12-2007, 05:02 PM
http://cgi.ebay.de/Fender-Twin-Pro-Reverb-2x12-Vollroehren-Combo_W0QQitemZ150091065552QQihZ005QQcategoryZ4665 4QQrdZ1QQcmdZViewItem



:dude
takis
02-12-2007, 05:07 PM
NICE!but ..don t have money for this...:(
John Phillips
02-13-2007, 04:14 AM
A Pro Reverb is really a LOT more amp though - size, weight and volume. Enough that if it was me, I'd prefer to upgrade the Deluxe.

There are a couple of things you could do to the Deluxe without new transformers...

Fit 6L6s, and possibly a solid-state rectifier. This will give a bigger sound, with more clean headroom and punch, and a bit more volume. To do this you will need to rebias, and if you're going to fit a SS rectifier you will need to have the filter caps replaced (which are about ready to be done anyway, on a '79 amp) with 500V-rated ones.

Fit a more efficient speaker. Depending on what you choose, it's possible you could get up to about a 3dB increase, which is equivalent to doubling the power of the amp, and that's without any other change.
takis
02-13-2007, 04:37 AM
thanks john!:AOK
can you suggest me some good 6l6 tubes for this amp?the speaker that i have now is one new jensen c12k 100watt and i like it!
i think i ll try the upgrade because i think that i need the headroom and general more..power from my amp...
Blue Strat
02-13-2007, 06:28 AM
A Pro Reverb is really a LOT more amp though - size, weight and volume. Enough that if it was me, I'd prefer to upgrade the Deluxe.

There are a couple of things you could do to the Deluxe without new transformers...

Fit 6L6s, and possibly a solid-state rectifier. This will give a bigger sound, with more clean headroom and punch, and a bit more volume. To do this you will need to rebias, and if you're going to fit a SS rectifier you will need to have the filter caps replaced (which are about ready to be done anyway, on a '79 amp) with 500V-rated ones.

Fit a more efficient speaker. Depending on what you choose, it's possible you could get up to about a 3dB increase, which is equivalent to doubling the power of the amp, and that's without any other change.

What John said, though a bigger output transformer will help a lot. A 5AR4 rectifier would also increase output compared to the stock 5U4GB and still feel like a tube recto rather than the stiff SS recto.
chocopower
02-13-2007, 08:48 AM
thanks john!:AOK
can you suggest me some good 6l6 tubes for this amp?the speaker that i have now is one new jensen c12k 100watt and i like it!
i think i ll try the upgrade because i think that i need the headroom and general more..power from my amp...


I have two Weber 12F150 in my Guyatone GA1050 (Pro Reverb clon) and theirīre amazing!!!
Swarty
02-13-2007, 09:42 AM
Where/how do you mount the second speaker?

OK, more seriously.. I'd take it in 3 steps.

1.) Start with an efficient speaker, as JP stated, this can yield a 3db increase, which may be enough.

2.) If you still need a bit more, install 6L6/5881s.

3.) I you still need more, swap in a 40-50 w/ 6L6 output transformer.

I've got a modded DR that I've run Tungsol 5881s in for about 15 years. About 8 years ago it got a reissue JTM45 OT. It sports an old coffee can SRO and is louder than many 50w amps.
hasserl
02-13-2007, 10:21 AM
I've got a modded DR that I've run Tungsol 5881s in for about 15 years. About 8 years ago it got a reissue JTM45 OT. It sports an old coffee can SRO and is louder than many 50w amps.

Sounds like a recipe for an awesome amp!! Bet it sounds sweeeeet. :AOK