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Messages - Bill Moore

#31
Preamps and Effects / Re: Boss Metal Zone MT2
November 09, 2010, 07:45:38 PM
I also have an MT-2 that I'm deciding what to do (mod or not). I have experience with a few other Boss pedals, a couple I installed the "Keeley" mods, and another was a ? that the guy I bought the pedal from included. On all three, the reduction of noise (hiss) at idle was really noticeable. Also on all three, the tone control was more useable after the mods, (not off or on), and I think I can get more of the sound I was searching for. In the case of the DS-1, and the BD-2, there is also another option for sound adjustment, with an added switch.
Not trying to suggest you need any mods, but I wondered why Boss didn't put a little better components in their boxes, just for the noise reduction alone.
#32
Tubes and Hybrids / Re: Drive channel is too dirty!
November 13, 2009, 07:43:59 PM
Thanks, I wasn't aware of the difference in diodes. And yes, I intend to try experimenting with some variable resistors, as per teemuk's ideas. If I find a combination I like, I might drill some holes in the rear of the chassis, and install some pots there.
Another thing J M Fahey brought up was my guitar, I don't have a single coil pickup guitar, and maybe the thing will sound great with a Strat! I might take it over to my sister in laws, and have her play through it.
I've got to finish wiring my Twin chassis, and get it off the table before I tear this one down again. But I will report what I've done, and thanks to all for the information.
#33
Tubes and Hybrids / Re: Drive channel is too dirty!
November 03, 2009, 12:17:05 PM
Thanks guys, I really appreciate all of you taking the time to analyze my problem, and offer advice. I am using the amp at low volumes,(actually in a spare bedroom). My old Airline gives me exactly the blues type breakup I like, I was hoping I could achieve a similar sound with the hybrid by tweaking the drive circuit a little. Like Enzo says, it could be a waste of time, but I intend to try your suggestions, and see what it sounds like.
I only got the little amp working for sentimental reasons, I am neither an accomplished guitarist, nor steel guitarist, but I enjoy playing both. I get as much satisfaction building an amplifier as I do playing through it, but learning to modify the amp to achieve a particular sound, I think is an enviable goal.
I will try your suggestions, and post the results, thanks again for your help.
#34
Tubes and Hybrids / Re: Drive channel is too dirty!
October 30, 2009, 03:00:14 PM
Thanks for the reply, I'll get my schematic scanned this weekend, and try to post it Monday.
Thanks again, Bill
#35
Tubes and Hybrids / Drive channel is too dirty!
October 30, 2009, 11:28:29 AM
I ended up with my nephews dead Champ 25, and replaced a few parts, and got it working again. I replaced the speaker with a Mojo heritage clone, and the clean channel is almost Twin clean, really a great sound. The problem is the other channel, even with the gain at zero, it is gritty. Looking at the schematic, there are no less than 7 diodes after the gain control. Has anyone bypassed/removed some of these, or replaced some of them with LED's, or maybe have another fix to get a cleaner sound from this channel? I would like to get it to sound like a single 6V6 amp dimed into a Weber vintage AlNiCo.
I think maybe here at the SS Forum, you guys will have a little more knowledge about the SS preamp, and maybe modified a few. My friend/amp tech, can really make a tube amp sing, but is ambivalent about SS devices. (Although most pedals are not tube!)
Thanks for your help, Bill.
#36
Our favorite guitar used one of them with a 6-10 enclosure, really loud. We used to play outdoors a lot, (generator power), only had 1 failure when it fell backwards off a 6 foot stage, made horrible humming sounds. I opened it up and found the internal reverb tank wires were broken, I taped up the RCA plugs, and put it back together, he played it for years after.
I fixed the reverb pan, but Joe didn't use it, last year I put it in a Chinese Fender head.