Відео

@@tylerevans1700 It’s real, real good. Needs to find a home though.

I did but I never did love it even after the mods. I ended up completely removing the circuit and used the transformers to build a JCM800 with 6V6’s in it. There’s probably a better middle ground in the mods for these. The biggest issue I had after the mods was there was a LOT of gain REALLY early. I could have maybe figured that out but ultimately decided to go handwired.

@@ryanintopeka fair enough.. i may just move the loop to after the channel controls and use it as it is.. i get why they wanted to make it like a "pedal loop" but i tend not to use pedals much for my dirt, but would find a 6v6 power stage useful in such a portable head.. I have a modulus 5e3 kit to build anyway so not all that bothered about vintage circuit correctness in the TSA, I am just generally a fan of 6v6s and its slim pickings when that's your jam

@@stuartbradbury944 I feel that! The JCM800 with the 6V6s is pretty cool. All that chimey great sound at a reasonable volume. Doing about 18 watts.

Yes. I ramble sometimes and miss details. But you are correct!

I honestly cannot remember what cab it was. The Strat has some hotter than usual Mexican Standard pickups and a cheap Gretsch humbucker in the bridge. I have since done even deeper mods on this amp and I think I am going to end up likely building a full on JTM clone circuit into it on turret board.

Thanks for quick reply . Good luck on your JTM board; I too like JTM tone/feel. My goal would be to come closest to Super / Super Reverb

Not really. I haven’t put much thought into which part made the biggest tonal difference. I really need to add an addendum to this mod. Just this past week I pulled the chassis out again and did a few more little mods - namely pulling the little bass/treble/volume tone stack board out and changing all of the values on that board to match JTM45 spec, which is essentially what this mod is. I do have to say that since doing these mods there is nearly no clean anymore. Partially because the Volume pot on this amp has the wrong taper, and potentially also the slope resistor. But boy does it ever kick ass now. Haha

@@vertheinguitarworks3844 thanks for the fast reply! Given that I really want to preserve the clean sound , I'll probably start by putting in quality preamp tubes and go from there. I'll report the results in the comments here and probably in that thread on the Marshall forum. The clean channel is where this amp shines and since it takes pedals so well and I have some good ODs, I can always go that route for higher gain. Thanks again for all of the detailed information, it really cleared things up!

I’ve got a long post over on the marshall forum about it with a schematic. I could potentially come up with a parts kit but I’m weary about supplying it to other people when I don’t know what their skill level is. Modding on PC board amps takes some real patience and care.

Hi Did you get it? Any thoughts about it?

​@@dimitris70I got the amp but I haven't had time to look up the schematics and/or start tinkering the the amp yet. What about you?

@@primaballerina84 okay I'm semi beginner and have a Rolland cube 30x for practice I'm ok with that amp now, don't want high gain Sometime i will try/buy a tube amp The tsa15h seems a nice clean amp But the od channel seems a little weak?? Sorry English is not my first

@@dimitris70 Indeed. The gain channel is more of an overdrive vintage style sound. If you want real distortion for hard rock and metal etc I would go for a different amp. There are many high gain combos available with decent clean channel sounds as well 👍🏻

I would definitely check and set the bias for proper dissipation. I can’t remember if there’s a bias test point inside (been months and months since I’ve been in it now.) but there probably is.

​@@ryanintopekaI havent been into it, to see if it has a way to adjust it or not. When i purchased it, i was under the impression that it didnt have, but since i got, seems like ive heard it does. So i have no idea. I know nothing about electronics. I have a 70's solid state Peavey and a 2014 Blackstar stereo amp. The Ibanez is the only tube amplifier Ive had. So im completely ignorant of what to do with it. Wish I could go back in time, and instead of getting the Ibanez, I'd have just forked out a few more dollars, and got a Blues Jr. They are nearly double the price now, than they were 5 or 6 years ago.

@@1980bwc I feel you. They’re really cool but they definitely have some issues. There is a bias pot inside but mine was glued so well it was immovable.

There are a few things but the biggest thing is that these amps have no negative feedback loop which cleans up the signal as the value of the resistor in the loop increases. I finished more mods this morning actually and am finally fully happy with it. I am working on a schematic and a write-up explaining how to do the mods.

@@vertheinguitarworks3844 allright!! Thanks!! Really looking forward for that write-up. Nice work here. Keep'em coming!

I did make a long post on the Marshall forum about it the other day. It’s in a thread about getting closer to a Princeton tone in “The Workbench” area. If you have any questions you can email me!

@@vertheinguitarworks3844 I actually had that forum open in another tab from the other night. Hit refresh and theres your post. I finally found the complete schematic but I've only ever built one pedal so I'm trying to educate myself a bit more to avoid frying the amp and somewhat more importantly; myself. I appreciate your offer to correspond via email and I may take you up on it because the improvement you've achieved puts this amp on another level.