Putting in sockets for the op-amps to try out the lower noise ones These boards include power rectifier and amp. Remove all the original audio amp components and use one of those PSU+AMP TDA2030 boards from Eb*y. This will make removing the PCB easier for tweaks.Ģ. Will mean drilling a hole in the chassis. Move the AC circuit from the main PCB and use a fuse holder instead. My problem is that of too much volume (hearing sensitive spouse and all that)ġ. An alternative to replacing it (since it's probably hard to get an exact physical replacement) is to replace R18 with a large value. The volume control pot is a B50K which I assume means that it's linear as opposed to audio taper. There's a blog article where someone used a pair of 1N34As. I'll look into replacing the leds, either with a single one of different color or with a couple of germanium diodes. Roly, thanks for the suggestions and the schematic. That should work, although you could always mount another socket somewhere for an external speaker and retain the headphone/Line Out option. Quote- Remove/short the headphone resistors and use the headphone jack as a speaker out jack Quote- Zeners to "control" the supply voltage for the op-ampsĭo you have a reason/problem? If you don't actually have a problem then I wouldn't bother, most op-amps have about 120dB of power supply rejection. If it's a linear taper then it will be about 25k to each end, but if it's quite different then it's already a log pot. Set it to 5/10 and measure the resistance from the wiper to each end. Quote- Use an analog taper pot for volumeĪll pots are by their nature analog - I think you mean "audio" taper or log pot, which the volume control should already be. You may find some tonal advantage in playing around with one of these LED's trying one with a different forward voltage (generally a different colour) with will give you asymmetric clipping of +ve and and -ve parts of the signal, which can produce a nice 2nd harmonic. The overdrive from this stage is clipped by the following back-to-back red LED's. Quote- Change the gain resistor of the second stage to reduce the gain when the drive switch is on Totally satisfied with both amps for home use.A six inch speaker is worth replacing just because it's six inch, and a buzzy six inch speaker. Loud enough to fill up the room or house with noise. If I want to get louder and way more gainy, I use a Fender Pro Jr tube amp with dirt pedals for practicing standing up. I think of the Pathfinder as a great 'quiet' practice amp. The Pathfinder will not be near as loud or as big sounding as your Bandit but is very well voiced and a great amp for $120. The Pathfinder though takes dirt pedals as well as solid state amps can. Dirt pedals (overdrive and distortion) often will not sound right into solid-state amps. It takes pedals as well as any all-solid-state amp. No hum and it has a good dirt sound if you dial it in right. I have been doing more to practice with a clean tone as this makes my practice a lot more honest. The Pathfinder is my sit down and practice amp. I think thery are both exceptionally good sounding amps. I have a Pathfinder 15 (no reverb) and a Pro Jr for home practice. Would I feel a huge difference going from this 12" speaker to the Vox's 8"? How good would are the cleans compared to the Bandit. How good would it sound with my guitar and its Dimarzio humbucker? Does it hum? (My first amp was a small peavey rage which hummed and buzzed so much I had to get rid of it. There's a few things that are important to me: I initially wanted to get a small tube amp, but this Vox seems way more versatile, while having similar tone and dynamics. So when I was looking at under $200 amps, I ran across the Pathfinder. A good low end and it works well with my pedals. I think it has good clean sounds, they're okay. I never go past 12 o'clock on this amp (that's cranking it for me). Besides I don't gig, I only play for myself at low volumes. I'm thinking of selling my Bandit 112 and buying a smaller under $200 amp, since the Bandit's a little too big for the space I have in my room. And I own these pedals: ProCo RAT, Ibanez delay, EHX Small Clone, Boss Metal Zone, and Boss Flanger. I currently have a Peavey Bandit 112 (80w, 12" speaker), and a strat-like guitar (S-S-H, changed them all to new Dimarzios).
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