Re: Is there a way to improve the clean channel of a 6505 on the cheap?
There is technically no clean channel at all on a 5150/6505.
The voicing of the amp makes it sound incredible for any kind of heavy rock or metal, but those kind of mids don't lend themselves well to a clean tone.
The main issue is the tonestack itself, not the tubes or anything like that.
3 options.
1. Use an EQ pedal like a Boss EQ pedal ('Guitar' or 'Bass', doesn't matter which version, both work perfectly well with guitars and bass guitar) and dip the 800Hz slider halfway to all the way down (for other EQ pedals, slide down 500Hz and 1000Hz a bit)
This will take out a lot of the nasaly mids, will stop the sound from breaking up as much. Will really open up the sound for cleans.
The easiest option, but perhaps not the best of the 3 but still better than nothing.
2. Go on ebay or look around on guitar forums for something like a Boss GT-8 or GT-10 and run that into the amp using the 4 cable method.
You'll be able to bypass the preamp for using clean sounds and switch back to the amp's preamp section for your gainy tones.
Best option for live use
3. Go straight into the power amp with a guitar.
Just plug directly into the effects loop return. Bear in mind that post-gain on this amp are not master volume controls, so it will sound VERY loud using this method.
Add a delay pedal, use an EQ pedal to adjust the level and tonal shaping and use your guitars volume knob to get the desired volume level.
Not convenient for live use, but if I had no other amps on hand and wanted the best clean out a 5150/6505 for playing at home or recording clean guitar parts, this is the best sounding method.