Hmm I think I can borrow a cab from a friend. I never took that into conciseration because everyone always told me that the old marshal 1960a cabs from the 80s was gold. ill give this a try later and get back to you. Btw your very helpful I greatly appriceate your help

ok ill have to try some tubes i guess. Its hard for me to get tubes and parts here since I live in canada lol. My cab is a marshal 1987 with 75watt greenbacks. Did you get a chance to listen to the clips i posted. I find the amp has a very strong bass sound, its overwhelming its like a vibrating bass sound its hard to explain. it sounds very muddy.

Kevin

If you take a look at the schematic you will see that the circut is exactly the same. All that was added was a foodswitch relay to bypass the first preamp stage. With it on the distortion setting the circuit is exactly the same as the 2203 nick sells. Exact values

This is my schematic of the preamp. The rest is unchanged. I remember it sounding good before. But it probally didn't. This was my first tube amp so in compqrision to my old amp it sounded good lol. Sorry I forgot to me mention the amp it is lol. It started as a ceriatone jcm 800 2203'

Anyone have any advice.

forgot to attach the schematic:

http://img850.imageshack.us/i/moddedpreamp.png/


Sound Clips:

Dist
http://www.filedropper.com/distex

Clean
http://www.filedropper.com/cleanex

I dont know a better spot to upload an mp3, maybe you guys know

Thanks,
Kevin

Hey guys Ive had my amp for about a year now. Ive done some mods to the amp a few months ago then I had to put my amp away because I was doing renovations on my house. Now im getting back into the band scene and need my amp at top notch. Right now I find my amp has a bassy sound and my clean channel is very similar. I friend of mine helped me develop the schematic I used in my amp and it is built as shown. I will upload some sound clips in a bit to show you guys also. Im not sure if its just a tubes thing or if there are some changes I can make. Im using the JJ tubes for preamps and Tung Sol power tubes. I play mostly rock and would like to have a good sound for that. I play alot of covers so I need a good clean sound. My favorite tone guy is definitely slash, Id love to achieve his sound. Anyways I think im rambling, here is the schematic any advice is appreciated.

Thanks,
Kevin

I haven't tried it, but I have heard of people using pedals like chorus, delay and reverb through the loop so it doesn't run through the tone stack of the amp. But then other people disagree I would say its a matter of taste. Personally I would have to believe it sounds better in the loop.

Kevin

Hey guys I was working on a custom modded layout and I wanted to be able to draw it up so it looks nice like how the ones on ceriatone are. I talked to Nik and he told me they use autocad and illustrator. Anyone know a little more specific what is used for what and of any tutorials. I have some autocad experience.

Kevin

Ok I didnt know that it was a huge deal, I was misinformed, Im quite happy with this amp

Kevin

Hey guys now the I got my 2203 setup and running its amazing. I was lookin online and seen someguy who modded is 2203 to have two channels. He turned his low input into a 2nd channel with its own master volume and preamp volume. Ran a cable out of each channel and used an A/B switch to channel swap. Is something like this difficult to do? It would be nice to have 2 channels. If possible it would be awesome to have channel thats clean. But a channel with just a 2nd set of volume knobs would do I can get pretty clean rolling the  guitar knobs back, but I need a little more boost in it.

Kevin

Nice, after playing for a bit I noticed just by setting my front pickup volume i can go from a cleaner sound to a nice heavy distortion with a pickup switch.  How could I go from the really clean tone to a heavy distortion during a song with this amp?

Kevin

So all I need now is a set of power tubes. Any recommendations I noticed theres a tone of different types. I think i got the JJ EL34s in it now. I play stuff from Clean chili peppers to metallica, Im looking for mostly that heavy sound. I noticed they have selection of early and late distortion n stuff. Just looking for some advice on tubes I know little.

Kevin

This guy that told me what the problem is is an amp designer. Hes an awesome guy he showed me how I can change some minor things to get more distortion

Kevin

Got it working, turns out it was 2 bad tubes.

Kevin