#1
ive recently considered building something similar to a peavey 6505.
what would the cost be of building such an amp?
(estimate)
#2
More than buying a 6505 amp. Youre not going to save money building an amp. And probably want to start with something simpler.
#3
I have built a 5W Vibro Champ and it cost around $900 USD.

I am building a Deluxe Reverb and it will easily be $1200 USD.

Building that Peavey will cost way more than buying one from Peavey.
#4
Consider that the original manufacturer of any amp (or pretty much any product of any kind) pays probably 1/4 (or less) of the cost for the parts that you would.
#5
Yep. Building your own amp is only cheaper if it's a copy of something antique or boutique. Oh course, there are other reasons to build your own amp.
#6
Playing through an amp or guitar you made yourself makes you sound (to yourself) 10 times more badass.
Gear
-Fender American Stratt
-Tube Cricket
-Homemade 20 Watt Tube (pics+clips soon)
-MXR Stereo Chorus
-Holy Grail Reverb

Theres no sensation to compare with this, suspended animation, a state of bliss...
#7
You'd probably break even with that amp at the price it costs to buy new, $1200.

Transformers are very expensive, and that's where most of your cost gets eaten up.

The only time it's worth it to build an amp (cost wise), is if it's a rare and expensive reissue (Marshall 18watt), or no longer made at all.