So the JTM45 and Bassman are almost identical...

[Pierre]

I'm thinking my dream amp would be a Bassman circuit as channel one, and Plexi as two... Would it be hard to have the same shared preamp, maybe with a couple different options, but two independent power amps?
6L6s for the Bassman/JTM45 vibe and EL34s for a JPM50 vibe. Maybe different PI too. But otherwise the components would be very similar! A 4X10 cab stock, and it could be hooked up to another 4X12 for that real Plexi vibe.

Ok to be honest, I've been thinking VERY hard about building a Deluxe Reverb clone someday (without the fancy bits like Tremolo and reverb, so essentially just that 22W blackface tone :32 and well... The Bassman has a different vibe which I love too, and hell, if the Plexi is that similar of course... :| I have the diagrams I need for the preamps, but not for the poweramps, but I'm getting better at this stuff anyway.

Channel 1: Bassman voicing, ie. 6L6s with maybe a gain boost that's footswitchable
Channel 2: Plexi voicing, maybe hot rodded a bit, like you'd get if you used a jumper on a classic 1987 or 2204 (I.. think)
Maybe it's a little too much like 2 amps in one casing though.

 

[J Moose]

Re: So the JTM45 and Bassman are almost identical...

Channel 1: Bassman voicing, ie. 6L6s with maybe a gain boost that's footswitchable
Channel 2: Plexi voicing, maybe hot rodded a bit, like you'd get if you used a jumper on a classic 1987 or 2204 (I.. think)
Maybe it's a little too much like 2 amps in one casing though.

Sounds like you'd dig a Rivera! Some of his amps are real close to being a Marshall & Fender in the same box.

 

[Pierre]

Re: So the JTM45 and Bassman are almost identical...

Schematics don't seem that readily available for them though of course... The thing with Plexi and Bassman is that everyone and their brother knows how to build them. Well ok, not quite, but you get what I mean. Furthermore it wouldn't to buy new, I'd never have the budget at once. It'd be to build progressively I think. Which Rivera did you have in mind? I tried a Pubster I think and the lead channel was very grainy but not quite Marshall like.

 

[J Moose]

Re: So the JTM45 and Bassman are almost identical...

I didn't like the Pubster too much...sounded kinda hollow and didn't have the girth that a great Marshall does. That other new small one (Clubster?!) is kinda ok too but nothing to write home about...the magic is in their bigger amps.

The Chubster's got a hipper tone, but still sounds best plugged into some kinda closed back cab IMO. I've got a Rake Reverb head that to me is like having a great 70's Marshall and Fender in the same box. It was a signiture model for soem cat a few years ago. They also made a combo version called the Jake and they're both great amps...maybe the best non-metalhead stuff he's ever built! They also mod amps to players specs so you could probably call 'em up and describe what you're looking for and get sent in the right direction.

 

[B Bent]

Re: So the JTM45 and Bassman are almost identical...

***waits for Christian to chime in***

 

[ksmith63]

Re: So the JTM45 and Bassman are almost identical...

buy a Randall MTS (modular tube system) amp along with the "tweed" (bassman clone) and "JTM45" preamps. Problem solved.

 

[Pierre]

Re: So the JTM45 and Bassman are almost identical...

Yeah but that's simple, it's cheating

 

[JeffB]

Re: So the JTM45 and Bassman are almost identical...

They are similarly built amps (i.e circuit) but they don't sound the same...no more than a JMP 2203 and a Metal Face 1987 sounds the same..

they have similar qualities...but to my ears pretty different...tubes characteristics alone make a pretty marked difference...

and BTW....running a Bassman into a Marshall 4x12? Thing of beauty...they def sound more like an early marshall (or vice versa)

In general JTMs are brighter and crunchier....glassy on top

 

[the guy who invented fire]

Re: So the JTM45 and Bassman are almost identical...

***waits for Christian to chime in***

Christian is gonna leave this alone...tha last time the 5F6-A VS JTM-45 issue came up it got ugly and Im not going there again...

If you want an answer to your question read up...this info is well published in many places and can be found quite easily.

As for building an amp like you are describing do to it 100% ike what you want you'll have to have pretty much 2 full on different amps in one box and IMO it would be a big waste of time seeing that you could buy 2 seperate amps that woudl cover those 2 sounds for the same or less money that you are talking about...

 

[Pierre]

Re: So the JTM45 and Bassman are almost identical...

My question is simply about operating two poweramps for a single preamp, which I didn't find any info about unfortunately. The Bassman/JTM is just my idea, it could be anything of course.

 

[the guy who invented fire]

Re: So the JTM45 and Bassman are almost identical...

My question is simply about operating two poweramps for a single preamp, which I didn't find any info about unfortunately. The Bassman/JTM is just my idea, it could be anything of course.

You could have 2 different power amps if you wanted but it's gonna cost a ton...the Mesa Roadking has switchable power sections...

 

[STRATDELUXER97]

Re: So the JTM45 and Bassman are almost identical...

Christian is gonna leave this alone...tha last time the 5F6-A VS JTM-45 issue came up it got ugly and Im not going there again...

If you want an answer to your question read up...this info is well published in many places and can be found quite easily.

As for building an amp like you are describing do to it 100% ike what you want you'll have to have pretty much 2 full on different amps in one box and IMO it would be a big waste of time seeing that you could buy 2 seperate amps that woudl cover those 2 sounds for the same or less money that you are talking about...

LOL......I thought the same thing buddy,but we aren't going to go down that road again.....:bigthumb: You were right in the end anyway! :beerchug:

Speak your mind Christian,as you always have alot to offer!

 

[the guy who invented fire]

Re: So the JTM45 and Bassman are almost identical...

LOL......I thought the same thing buddy,but we aren't going to go down that road again.....:bigthumb: You were right in the end anyway! :beerchug:

Speak your mind Christian,as you always have alot to offer!

:arms: :arms: :arms:

It wasn't just you that I disagreed with...I got a few PM's from people that didn't agree as well so I decided to leave it alone!

Im glad somebody thinks I have things to offer that are not a waste of computer space!

Speaking of Marshall stuff...how is that 73 treatin ya?

 

[STRATDELUXER97]

Re: So the JTM45 and Bassman are almost identical...

:arms: :arms: :arms:

It wasn't just you that I disagreed with...I got a few PM's from people that didn't agree as well so I decided to leave it alone!

Im glad somebody thinks I have things to offer that are not a waste of computer space!

Speaking of Marshall stuff...how is that 73 treatin ya?

Well you know I'm your buddy and I have no problem saying "sorry" if I offend someone,especially you! It's all just dumb opinions anyway! It's dumb when it's all said and done!

The Marshall is great....I got Trace's MM OT and choke into it now and it gave the amp these cool complex harmonics that I've never experienced before with any other amp when it sustains and it sustains easier at higher volumes then it did before.Notes fly off the strings and out of this head and it's alot more responsive to how hard or how soft you attack the strings.It's more like your one with the amp I guess?..It cleans up very quickly and easily also on the guitar volume knob....I set my normal channel up to be cleaner in a bassman/JTM 45 sought of way by tweaking the cathode cap/resistor values,raising the 470K resistor value and getting the right cap across the 470K and the volume control and several other things....I wanted a cleaner,warm.full tone on this channel so my pedals would sound big and fat and not too spikey....

The amp is really great and I'm very happy with it....It's only downfall Chris,is that I'll probably need a Mass or THD Hot Plate etc...so I can get my volumes up and get the balls and stuff I need,but still be able to tame it down a bit....

The PIMV Pot works pretty good on my amp,but I Know an attenuator would be alot better or maybe a combination of the 2?

The MM stuff really made a significant difference in that it added complex stuff into the amp...Things you hear and feel but can't explain? It's very inspiring playing through this amp now and lately it's all I've played through! :bigthumb:

My band and my whole overall band tone is all about Marshall Classic Rock tone and clean BF Fender type tones....The heavier stuff for me has "always" been a Marshall type grind..

 

[the guy who invented fire]

Re: So the JTM45 and Bassman are almost identical...

Sounds great brother!

I need to get a good Marshall or something that has that same kind of vibe/tone but I just seem to be let down everytime I plug into a Marshall...some ore good but the only great ones are way out of my price range!

As for an attenuator I have to get one too...in fact im gonna pickup a Mini MASS this week. I called Weber VST today but they are moving and are a little hard to get ahold of right now...

 

[STRATDELUXER97]

Re: So the JTM45 and Bassman are almost identical...

Sounds great brother!

I need to get a good Marshall or something that has that same kind of vibe/tone but I just seem to be let down everytime I plug into a Marshall...some ore good but the only great ones are way out of my price range!

As for an attenuator I have to get one too...in fact im gonna pickup a Mini MASS this week. I called Weber VST today but they are moving and are a little hard to get ahold of right now...

I guess the idea behind my own Marshall was to make it into one of those that "has that certain" tone....I'm pretty happy with it and it's got the best stuff I could put into it and I guess that helps? LOL

Let me know how that Mass works out...

 

[the guy who invented fire]

Re: So the JTM45 and Bassman are almost identical...

I guess the idea behind my own Marshall was to make it into one of those that "has that certain" tone....I'm pretty happy with it and it's got the best stuff I could put into it and I guess that helps? LOL

Let me know how that Mass works out...

I hear ya...I wish I had the time to just sit down at the table and build a nice Marshall out of the best of the best parts but time is one thing I don't have these days...

I have tried a few amps I really, really liked (Matchless, Blockhead, Roccaforts, etc) but none that I could justify spending that muich money on...

I will let you know what happens with the MASS...Im gonna orer the Mini version, a 50 watter...I'll keep you posted!

 

[STRATDELUXER97]

Re: So the JTM45 and Bassman are almost identical...

I hear ya...I wish I had the time to just sit down at the table and build a nice Marshall out of the best of the best parts but time is one thing I don't have these days...

I have tried a few amps I really, really liked (Matchless, Blockhead, Roccaforts, etc) but none that I could justify spending that muich money on...

I will let you know what happens with the MASS...Im gonna orer the Mini version, a 50 watter...I'll keep you posted!

Thanks buddy....I trust your ears!