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 Post subject: marshall JCM 800
PostPosted: Fri May 23, 2014 3:04 pm 
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Bottle Rocket

Joined: Tue Dec 24, 2013 3:07 pm
Posts: 19
Anybody using the original 800 series, not the new vintage ones. How are the clean tones on these amps.


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 Post subject: Re: marshall JCM 800
PostPosted: Mon May 26, 2014 1:52 pm 
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Mark IV
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Posts: 812
JCM800? What clean tone? :lol:

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GUITARS: heavily modded Epi Goth Explorer; Jackson KVMG Pro; Yamaha SG2000; Gibson SG '61 Reissue; Squier CV Tele
AMPS:Mesa/Boogie 2:90+TriAxis; Marshall JVM410H (modded); Marshall 1960A w/V30
FX:BOSS GT-6


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 Post subject: Re: marshall JCM 800
PostPosted: Tue May 27, 2014 6:29 am 
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Bottle Rocket

Joined: Tue Dec 24, 2013 3:07 pm
Posts: 19
I never have played through and 800, so I didn't know anything about the clean sound of this Amp. After reading available post on the internet, and youtube, I think I'm rethinking this one.


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 Post subject: Re: marshall JCM 800
PostPosted: Tue May 27, 2014 7:38 am 
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Mark IV
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The reason for my post was that JCM800s aren't really hailed for their clean tone, but for their crunch/drive tones. The only Marshall I've tried so far that had a good clean tone for me were the JVM series.

I don't know how much headroom you need, but maybe a Fender Twin, a VOX AC30 or a Hughes&Kettner smaller combo would be more up your alley? Maybe even a Roland JC-120 (though that's a solid-state amp)?

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GUITARS: heavily modded Epi Goth Explorer; Jackson KVMG Pro; Yamaha SG2000; Gibson SG '61 Reissue; Squier CV Tele
AMPS:Mesa/Boogie 2:90+TriAxis; Marshall JVM410H (modded); Marshall 1960A w/V30
FX:BOSS GT-6


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 Post subject: Re: marshall JCM 800
PostPosted: Tue May 27, 2014 12:02 pm 
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Bottle Rocket

Joined: Tue Dec 24, 2013 3:07 pm
Posts: 19
thanks for the response and the info.


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 Post subject: Re: marshall JCM 800
PostPosted: Mon Jan 05, 2015 10:06 pm 
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Bottle Rocket

Joined: Mon Jan 05, 2015 2:23 pm
Posts: 6
I'm a Marshall guy at heart; the cleans on the JCM800 suck. For overdrive, I'm convinced that it's one if the best sounds there is. But clean is not its forte'. It IS rather dynamic, so if you don't need pristine cleans, you can roll your guitar volume back to clean it up. But the JCM800 is a one trick pony for sure.

That being said, I own a vertical input 50 watter, a 5w clone I built, and another 2204 that I'm building... Because it's one hell if a trick!


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 Post subject: Re: marshall JCM 800
PostPosted: Tue Jan 06, 2015 9:25 am 
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Bottle Rocket

Joined: Tue Sep 23, 2014 9:15 am
Posts: 17
My main amp is a JMP 2204 which is kind of an early model of the JCM800. There really aren't cleans. Even using the low-sensitivity input with a single-coil guitar and the gain set low, I can get a bit of hair if I hit the strings too hard.


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 Post subject: Re: marshall JCM 800
PostPosted: Tue Jan 06, 2015 11:36 am 
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Location: Central Texas
I'm curious about this as well as I have not played through an older JCM 800.

Do the early JCM 800s that you're talking about have 3 gain stages and a cathode follower?

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2 Partscasters
Mesa Boogie Studio Preamp
Marshall JMP-1 Preamp
FYD Twin Reverb Preamp
various pedals & effects
Homemade tube power amp
1X12 Thiele w/ Celestion G12H30
YOUTUBE mesafanintexas


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 Post subject: Re: marshall JCM 800
PostPosted: Tue Jan 06, 2015 12:53 pm 
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Bottle Rocket

Joined: Tue Sep 23, 2014 9:15 am
Posts: 17
talltxguy wrote:
Do the early JCM 800s that you're talking about have 3 gain stages and a cathode follower?


I think so. IIRC mine has 3 12AX7's. One is the phase inverter, leaving 2 tubes/4 triodes which would be 3 gain stages and the cathode follower. The low sensitivity input skips the first gain stage and only uses 2.


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 Post subject: Re: marshall JCM 800
PostPosted: Wed Jan 07, 2015 7:07 pm 
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Single Recto
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Joined: Sat Jan 12, 2008 12:32 pm
Posts: 1268
guitargeek6298 wrote:
I'm a Marshall guy at heart; the cleans on the JCM800 suck. For overdrive, I'm convinced that it's one if the best sounds there is. But clean is not its forte'. It IS rather dynamic, so if you don't need pristine cleans, you can roll your guitar volume back to clean it up. But the JCM800 is a one trick pony for sure.

That being said, I own a vertical input 50 watter, a 5w clone I built, and another 2204 that I'm building... Because it's one hell if a trick!


I'd like to know more about that 5w clone!!!


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 Post subject: Re: marshall JCM 800
PostPosted: Thu Jan 08, 2015 10:22 am 
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Bottle Rocket

Joined: Tue Sep 23, 2014 9:15 am
Posts: 17
I seem to recall someone over on the Marshall Forum was building 10W JCM800's. I don't think there are any commercial 5W kits available at the moment. Either one would be a hell of an amp!


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 Post subject: Re: marshall JCM 800
PostPosted: Sat Jan 10, 2015 5:24 am 
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Mark IV
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Joined: Wed Jul 01, 2009 9:47 pm
Posts: 814
Location: Australia
talltxguy wrote:
I'm curious about this as well as I have not played through an older JCM 800.

Do the early JCM 800s that you're talking about have 3 gain stages and a cathode follower?


Yes and no :D

The high input has 3 gain stages and the low input 2. The gain control for the 2203 (master volume version) is before the second stage which. The low input is injected at that point. The non master volume versions are almost the same too.

I haven't played my 800 for a while, but my recollection is that the clean sound is decent. If you run the gain at say 2 and the master where you want there are loads of clean, it's a 100 watt amp.

I think where the bad rep comes from is that is that if you compare it to a Fender twin it doesn't sound nearly as "beautiful", but that doesn't make it all bad. You can only have it set for clean or classic Marshall drive. Given a choice who wouldn't crank it for about the best rock and roll tone ever.

A friend of mine was using a 50 watt 2x12 JCM combo I used to own until quite recently for gigs. He plays a Tele and his band do a lot of country and other 50's covers. Sounded pretty good on stage to me.

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Triple Crown 50 combo
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 Post subject: Re: marshall JCM 800
PostPosted: Mon Dec 07, 2015 1:50 am 
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Bottle Rocket

Joined: Sun Dec 06, 2015 10:57 pm
Posts: 12
I know you want only info about cleans on an original, but the extra brightness of the 2203X RI is one of my favorite clean tones. Sparkly with a good Strat (I use CS69 pickups in mine).


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 Post subject: Re: marshall JCM 800
PostPosted: Wed Dec 23, 2015 6:32 am 
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Mark III

Joined: Tue Dec 22, 2015 12:15 pm
Posts: 283
I've a JMP 2203 and a 2203KK (that I've modded a fair bit).
Both are capable of clean sounds. The JMP reaches clean quicker than the KK, as you dial down the gain pot. The best you're going to get is that Hendrix ballad sort of sound. The high end can be a bit spiky with the gain pot down.

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 Post subject: Re: marshall JCM 800
PostPosted: Wed Mar 09, 2016 2:34 pm 
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Donating Member

Joined: Sun Jul 06, 2008 9:48 am
Posts: 629
Location: Central Texas
The music I grew up on in the 80s used a lot of JCM 800s. There's just a connection there that will last with me until I die. I finally got one, so to speak, when Rob from Jaded Faith mods create a JCM 800 module for my RM4 preamp. I have been and am still in love with it, which is amazing for a tone snob like myself. If I want cleans, I simply roll back the volume on the guitar as well as the gain and volume on the preamp. And the crunch is off the chain beautiful as everybody knows. The lead is surprisingly making me continually smile - even without pedals in front of it. My custom power amp has a Marshall OT although the rest of it is very Mesa-based, to include a spongy setting which I use all of the time.

Not sure if it's cause I'm getting old or what, but I don't use the terms better so much any more. I'm not gonna say the JCM 800 is better than any Mesas that I've played. The JCM 800 does not have the gain stages that my Studio Pre had but it's all good. It's so much fun to play. If you have never played one, you owe it to yourself to check it out, even if you are a Mesahaulic.

_________________
2 Partscasters
Mesa Boogie Studio Preamp
Marshall JMP-1 Preamp
FYD Twin Reverb Preamp
various pedals & effects
Homemade tube power amp
1X12 Thiele w/ Celestion G12H30
YOUTUBE mesafanintexas


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