Mike_LA
Well-Known Member
Oh Dear, he texted back ...
Marshall JTM 30 Tube Combo Amp 30W 1x12 --->> yea or nay?
- Thread starter Mike_LA
- Start date
Mike_LA
Well-Known Member
I have Got to stop checking CL, aaand listening to you guys...
Ha!
Introducing the Marshall JTM30.
Ha!
Introducing the Marshall JTM30.
HNAD!
What's the speaker in there?
Edit: and any interesting tubes?
What's the speaker in there?
Edit: and any interesting tubes?
Last edited:
Mike_LA
Well-Known Member
Thnx, It's got a Heritage G12 and sovtek 5881 power valves.
Anyone got a pic of what the cage is supposed to look like?
I had a complete blind squirrel finds an acorn moment when I bought the JCM600 (JTM60) chassis and found this on Reverb.
I know it's not the same size, but this is what you are looking for, for the 30.
3 tabs slide in slots in the chassis and there are 3 screws that go into the back panel.
Might be something you could make, or have made?
How's it sound?
Do you like the tones?
That grill cloth is just that color I think right? Not faded like some of the mid 80s stuff. I seem to remember ads when they were new with similar cloth.
$250..no Brainer.
$250..no Brainer.
Mike_LA
Well-Known Member
Tried it out for a min to make sure everything works..
The reverb is pretty weak so I've got to check connections
I tried jumpering the fx loop and that caused a bunch of static,,
think I'm going to open it up and give it a good cleaning.
Finally make room to be able to stand enough away from it to hear properly .
More later, new amps are such fun . . . . . .
Central Scrutinizer
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jcm800gridlock
Well-Known Member
Congrats, a good looking Marshall.
I played a 2x10 version a few years ago and loved the tone. Good-warm Marshall tone. I’d definitely run a small fan behind it if using it for extended lengths of time.
I played a 2x10 version a few years ago and loved the tone. Good-warm Marshall tone. I’d definitely run a small fan behind it if using it for extended lengths of time.
Mike_LA
Well-Known Member
I made a lamp shade out of some metal that will work just fine.
Now that I know what it's supposed to look like... thnx
Though that's kinda far down the project list right now...
Mike_LA
Well-Known Member
Yes, I believe it's some sort of wheat color.
The tolex is a lighter shade, almost grey. Thinking about pledge or Armourall to bring it to life a little.
I like it though, would look nice next to the couch.
Mike_LA
Well-Known Member
Don't see why not, the AVT comes with one.
Thnx
Hummm, then again, If I'm building a cage, why not incorporate a fan or 2?
Mike_LA
Well-Known Member
Yup, Sovtek 5881
Mike_LA
Well-Known Member
Yup, I like it a lot.
Going to give the AVT a run for the money.
It seems to be very responsive and sensitive to too much gain from a humbucker in a clean tone. Gets raspy, much better dialed off a little. The OD is smoother than the AVT.
dro
Well-Known Member
These amps don't get the love they deserve.
I think they sound great.
I never ""gigged" one though.
Most amps are fine for home use.
Gigging it is where you find out how good it really is.
I think they sound great.
I never ""gigged" one though.
Most amps are fine for home use.
Gigging it is where you find out how good it really is.
Gene Ballzz
Well-Known Member
HNUAD. When I can get around to it, I'll dig mine out of the road case that's currently a little buried, and provide pics and measurements for that cage. The speaker out jacks function in an odd way. The "Extension" speaker jack (for 8 ohm use) only functions if something is also plugged into the "Internal" 16 ohm jack. This means that for 8 ohm operation, you must use either two 16 ohm speakers on separate cables "OR" plug a single 8 ohm speaker out of the "external" jack and plug a dummy (unwired) plug into the "Internal" jack to properly activate the switching. Kinda goofy, but that's the way it is. I suspect that folks not understanding this has been a source/cause for overheating by running an 8 ohm load out of the 16 ohm jack, over the years!
It is my considered opinion that while the amp sounds fabulous plugged into something like a 1960, 4x12 with greenbacks and other speaker(s), the stock speaker sounds like total @$$! Too percussive and harsh at all the wrong frequencies! A Creamback 65 can make the amp really come alive in combo form!
And yeah, the reverb in mine was totally lackluster, until the spring tank took a poop and stopped working. Years later I got a new M.O.D. branded tank (of the correct replacement number) and the reverb came to glorious life, sounding much better than the original ever did! I'll see if I can get the numbers off of it, without removal. IIRC, the new one was only $25-$30.
This amp sounds it's best with the MASTER fully dimed! It will provide some very classic Marshall tone in the NORMAL channel also dimed, then balance the BOOST channel to that NORMAL channel, to taste. That BOOST channel can be kinda fun, with its mild diode clipping circuit, but the NORMAL is where it's really at! As the MASTER gets turned down, the NORMAL channel loses most of it's character and leaves you only wanting to use the BOOST channel. A really great attenuator, like a JohnH design works fabulously with this amp. Be aware, that although this is touted as a 30 watt amp, it puts out all of 50+ watts! IMHO, everyone should own a @JohnH attenuator!
Enjoy, I Love Mine!
Gene
Mike_LA
Well-Known Member
No worries, I just needed to know what it looked like.
Good to know, luckily most all my cabs are 16 ohm.
Hummm, it sounded quite nice yesterday but more testing is in order.
Will compare it to my Weber alnicos
That's what makes me think it's time to check the connections in the reverb circuit.
Thnx
Gene Ballzz
Well-Known Member
Be VERY careful inside, as the circuit board traces are gossamer thin and fragile!
Just Warnin'
Gene
pulsonicsound
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That is super clean!
A british made valve amp with a british made celestion? can't argue with that price!
I used to have one but it got sold and the funds converted into a 4x12..
A british made valve amp with a british made celestion? can't argue with that price!
I used to have one but it got sold and the funds converted into a 4x12..
