The unsung Marshalls

JeffB

Let it B
One of the best SOUNDING Marshall series was unfortunately the shortest lived, and had a terrible reputation.

I'm of course speaking of the JTM series of the 1990s and their replacement the 600 series.

The JTM 30/60 were plagued with a major design flaw that roasted the PC board-oftentimes burning up with a few days. They were extremely unreliable, and Marshall redesigned them as the 600 series.

I had a JTM 60 model combo Frankly, I thought it kicked the crap out of the 900s, especially when run into a 2 or 4 x12. I'm sure Marshall brought them out as a alternate for those who did not like the 900 tone. I've no idea if the JTM/600s had diode clipping or not, but they sure sounded better than the 900s to me. I sold my Dual Reverb 900 in disgust shortly after buying it, but the JTM60 really impressed me a few years later and I bought it. It was somewhat similar to the old 2205/4210 split channel 800s in layout and features.

The Clean channel is still I think the best clean channel Marshall has ever done and totally made up for the awful 2205 cleans- kind of a JTM45 type thing that when really cranked to hell got a wonderful early Angus Young crunch.

The gain channel was similar to the 2205 in level of gain on tap (perhaps a tad bit more), but had more tonal variety (i.e. better EQ response), and a more organic sound that was not quite as edgy as the 800s. The gain channel also did a wonderful "just starting to break up" tone.

Unfortunately my JTM60 fried a few months after I bought it- by that time I had bought my 1987X and the JTM sat for years as I never got around to getting it fixed.

I suspect the JTM/600 series died sales-wise long before being discontinued due to it's poor reliability rep. Not to mention it's price point was somewhere between the 900 series and the Valvestates- which is a business no man's land for amps. Of course not long after , Marshall brought out the 2000 series, and IMO, a really nice sounding Marshall series was pushed out of the way for that buzzier, fuzzier, higher gain stuff that Marshall felt players needed/wanted. Sad because the JTM/600s were the last simple (relatively speaking) classic sounding Marshall amps, IMO.

So I've been perusing Youtube and found a few nice clips of these old amps (there are more, but these are the better recorded clips I've found).

Enjoy.

JTM30 combo

Clean Channel JTM60 goodness

Here's the odd 3 x10" combo

Here's a 600 series head

Another JTM 30
 
Re: The unsung Marshalls

Sound good, but did they ever fix the reliability?? I saw one of these for sale somewhere recently, and was tempted, but I didnt know they were unreliable..
Ive always wanted a marshall, but have NO EARTHLY idea what one to get. I LOVE all the 80s metal that used the jcm 800s, but the 2 times I played 800s, the had none of that gain I heard on those recordings.. Why?? I know its partially because I didnt have it dimed, but when I did crank up alil, it was just louder, not more distorted.

I think what I need is the new KK model.. but Im only $1800 short..
 
Re: The unsung Marshalls

The 600s fixed the reliability issue as far as I know.

Some guys have modded their JTM for a fan and some ventilation, which is what you need. You have to get that heat off the PC board, then they run fine.

I never had any issue getting an 800 to distort, but no doubt you gotta crank the SOBs, preamp up near or completely full and master at 3 oclock is pretty righteous but deafening. Thing is, at 9 oclock on the master the SOB is starting to get pretty loud :laugh2: The 6550 tubes dont distort as easily/in a similar manner as EL34s and the 800s coming over to the US in the mid 80s were 6550 equipped.

Also alot of guys used pedals to goose the 2203/2204s, and the speakers are also a critical part of the sound- 65s, 70s, 75s for the most part along with old GBs and old 30s (NOT the V30- totally different sound- the old 30s were more like todays 12H)

The 2205/2210 had quite a bit more gain with the diode clipping circuit. I'd recco starting there (4010 is the 50W combo version)
 
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Re: The unsung Marshalls

I know you didn't Like your JCM 900 Dual reverb, but you should really give the MKIII Master volume models a go(2100,2500), you'd be quite surprised how good they sound.

~Mitch~
 
Re: The unsung Marshalls

i thought the JTM30 sounded really good kind of a vox meets marshall vibe IMO. I took it back to GC withinthe 30 days after reading the horror stories on the net.

sad that they put out such a great sounding amp with such a obvious flaw. didnt they test the production versions under some stess?
 
Re: The unsung Marshalls

The only Marshall I've ever been blown away by was a JTM60 combo. Everything else was mediocre to poor, IMHO. Of course, I've never dimed a Plexi. :burnout:
 
Re: The unsung Marshalls

I know you didn't Like your JCM 900 Dual reverb, but you should really give the MKIII Master volume models a go(2100,2500), you'd be quite surprised how good they sound.

~Mitch~

I dig the MKIIIs to a certain extent. Sounds kinda like a cross between a Joobee and a 2205.

MKIIIs were hard to come by in those days and phased out fairly quick cos of poor sales (1 channel with 2 Masters? or dual channels? of course everyone stocked the DR) .I never saw one when I was initially shopping for 900s and the DR soured me so bad I kinda went anti-Marshall for a year or two. I really was miffed at the time- "Marshall dropped the 800s for THIS POS??" :banghead: :laugh2:
 
Re: The unsung Marshalls

I dig the MKIIIs to a certain extent. Sounds kinda like a cross between a Joobee and a 2205.

MKIIIs were hard to come by in those days and phased out fairly quick cos of poor sales (1 channel with 2 Masters? or dual channels? of course everyone stocked the DR) .I never saw one when I was initially shopping for 900s and the DR soured me so bad I kinda went anti-Marshall for a year or two. I really was miffed at the time- "Marshall dropped the 800s for THIS POS??" :banghead: :laugh2:

+1...my friend has a DR, and I can only get along with it if I use a pedal into the clean side. I don't think I'll ever like the distortion on that thing...it's forever either too much fizz or not enough grind to make it sing. No happy middle ground for me.
 
Re: The unsung Marshalls

Sound good, but did they ever fix the reliability?? I saw one of these for sale somewhere recently, and was tempted, but I didnt know they were unreliable..
Ive always wanted a marshall, but have NO EARTHLY idea what one to get. I LOVE all the 80s metal that used the jcm 800s, but the 2 times I played 800s, the had none of that gain I heard on those recordings.. Why?? I know its partially because I didnt have it dimed, but when I did crank up alil, it was just louder, not more distorted.

I think what I need is the new KK model.. but Im only $1800 short..

A lot of what you heard on 80s recordings were cranked and/or modded plexis.Even 800 users would often stick an od in front.
 
Re: The unsung Marshalls

A lot of what you heard on 80s recordings were cranked and/or modded plexis.Even 800 users would often stick an od in front.

Yeah, this is what Ive learned.. Funny, I dont understand how to overdrive a hot amp.. Anytime I put any kind of OD pedal in front of a gain channel, it sound jumbled up.. Like the regular clip and then an interim clip from the pedal...
 
Re: The unsung Marshalls

Yeah, this is what Ive learned.. Funny, I dont understand how to overdrive a hot amp.. Anytime I put any kind of OD pedal in front of a gain channel, it sound jumbled up.. Like the regular clip and then an interim clip from the pedal...
From what I gather it works better boosting a medium gain amp with some power tube saturation with a low drive high volume OD. Then again I goose on the edge of clean amps with distortion pedals but the above is what I think it was done in the late 70's/80's.
 
Re: The unsung Marshalls

I dig the MKIIIs to a certain extent. Sounds kinda like a cross between a Joobee and a 2205.

MKIIIs were hard to come by in those days and phased out fairly quick cos of poor sales (1 channel with 2 Masters? or dual channels? of course everyone stocked the DR) .I never saw one when I was initially shopping for 900s and the DR soured me so bad I kinda went anti-Marshall for a year or two. I really was miffed at the time- "Marshall dropped the 800s for THIS POS??" :banghead: :laugh2:


yea, It's actually a 1 channel amp, just a slectable MV, theres 2 MV knobs, but it's for the same channel with a footswitch to switch between the 2 MV's to give you an essential "boost" if you want.....but really all you're doing is turning the volume knob up on the amp:p
 
Re: The unsung Marshalls

I have the JTM 622 model, the dual speaker version.

The quality of sound that comes from the amp it truely very good. A little smoother than most Marshall's.

I have had it for quite a few years and had added a fan to the amp blowing across the tubes not long after purchasing the amp. I have never encountered an issue with the amp. It gets a good Lynch sound when pushed with a GE-7. Think of the combo as a "prettier" sounding Marshall combined with the open sound of the GE-7.

I think if you get a good one, or one that you can get rid of the heat before it has caused any issues, then you are good to go. A fan added and/or a top vent from MarshallParts should do the trick.

Now let's talk about the 3203/4203 Artist? :)
 
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