It took me about 1. Fun and easy. This was my first amp mod. Definitely doable if you've ever done any soldering work on your guitars. If the improvements I've seen are any indication of the quality of the mods, I'd say go for it for your amp.
Age: 41 6, I was wondering if u were gonna get around to doing this mod. Turns it into a whole new amp. Dcbowling80 , Dec 6, I was considering getting one of these and doing his reverb tank mod, which turns it into a reverb tank.
Maybe I'll find a cheap one and try this instead. Switchfooter , Dec 6, It's definitely tempting and I might go for it if i come across another one of these at a good price. Last edited: Dec 6, Age: 75 14, Instagvl, very cool. And congrats om doing your first amp mod! This reduces gain, so I used a pot that allows me to switch it out of the circuit and recover the gain. Great for getting cleaner tones, thicker tones, and for overdriving with a booster.
I built mine on perf for just a couple of dollars, and could dig out the layout if you are interested. Have fun! My website: America's Debate My effects site: Just one more build Thanks for the info. The mods you listed sound right up my alley. I figured the BitMo stuff may be overpriced but hits that group of people who are nervous about messin' with their EVJ's. Mike » 01 Sep , I'll post the layout tomorrow. I want to take a picture so it's really clear how to hook it up. I don't want to be responsible for someone frying themselves, or their amp.
Mike » 01 Sep , I didn't know if I would get to this tomorrow, so I put together a write-up now. Just as a disclaimer Please read up on VVR over at Sewatt and do some independent research on this if you don't know what you're doing. I don't want anyone frying themselves or their amp based on my suggestions. This worked for me, but that doesn't mean it will work for you, so proceed at your own risk. Here's mine in original stock condition: I got mine in like new condition for about a hundred dollars shipped from an online auction site.
They go for that much give or take ten bucks all the time. It's a good deal. Buy one if you're considering it. Totally worth it. Doesn't get too terribly loud when you crank it either, which is a good thing. I can comfortably play it dimed for a while in the afternoon or evenings but not at night. It's a few degrees louder than a stereo at what I think of as normal listening volume if that helps you put it in perspective.
As I said, I like it a lot but I'm not one to leave well enough alone. After looking into mods for some time, I decided on the BitMo Trio mod, which you can get on the internets for about fifty bucks.
It adds a tone knob, gain boost and three different gain voicings. All of this looks like a few parts in a bag once you get it in the mail: Now to install these mods, first thing you have to do is get in the amp.
Valve Juniors have self-discharging power supply capacitors so they are relatively safe to work on. Don't be afraid to roll up your sleeves and get to work on this as a first amp project.
The voltages that can build up in tube amps and knock you on your ugly ass should be rendered harmless. However, you can never be to sure so the standard advice still stands: don't be a retard. To open it up, first you have to take off the back: It's held on by screws. Turn them counter-clockwise to remove them.
There are then some larger screws on top you need to remove. They're hidden under little plastic things, which I always thought were a bit tacky but, you know, if don't want little cost cutting measures like this, buy a more expensive amp: The cab is designed such that the amp-part doesn't just fall down when you remove these screws. You have to slide it out. You never know when things are going to get too complicated to handle properly sober.
Next step is to drill the holes for the new controls. Don't rush this and wear safety glasses. The one for the three-way switch you just gotta guess on.
To drill these suckers, you need to be patient.
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