but i guess that drill goes: first swap stuff then mess with the board.Īny recomendations on an inexpensive OT?. i had to buy one.Īt first i thought i could get decent tones just by replacing resistrors and such (an inexpensive and fun way of modding) rather than swapping parts (no fun-labor factor there, and could be a bit expensive). so, i'll try using the smaller speaker i have at hand (not a big step forward, but might help).Īs for the OT, same issue. the only spare speaker i could use is the 8" stock one on my Vox 15R and as a said erlier on this thread, lots of reviews claim that swapping the speakers and tubes helped, and others claimed it didn't. The speaker replacement issue is a bit confusing. While overdriven the amps sounds ice-picking thin, i use a multieffect pedal, Digitech RP250 and all my distortion based presets sound like that to (not thru my Vox Pathfinder 15R). i'm using humbuckers so messing with the tone knob on my guitar get's me some good tones on it. Other areas to look at would be replacing the speaker with a better oneand replacing the output transformer with a better one. Do you want more bass in the clean sound or distorted sound? You couldbump up C1 to 22uF/50v, but it might make the amp sound flubby/farty.
#Vox pathfinder mods update
The V5 isprobably an update of the older amp with a larger speaker and someupgraded parts values. Looking at the schematic, it looks a lot like the VC-508. Tung, i'll post your email comments (for anyone following this thread): You might even want to spring for a spendy Burr-Brown type. I believe the TL072 is pin-compatible with the Tube Screamer types. I would pull the stock opamp and put in a socket so you can swap them out easy. Any of the replacements will give you slightly differing results. The input gain stages is a cascaded opamp. It definitely isn't the treble cut tweed type that I'm familiar with.
The tone control looks like a modified Baxandall to me, but I could be wrong. On most circuits this control is 470k to 1 meg ohms and would be an audio/log pot. I wouldn't know what to recommend for a replacement, it depends on how much real estate is on the chassis, and how the OT is connected into the circuit. I would guess that it is a combination of the 10" speaker and a small output transformer. Just to make sure I'm looking at the same schematic, what value do you have for R17? On my schematic, it is a 100 ohm, 5 watt resistor.
0 kommentar(er)
