Marshall JTM 30 for home use YES or NO

Discussion in 'Marshall Amps' started by gbradtke, Mar 21, 2008.

  1. gbradtke

    gbradtke New Member

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    Hi guys, this is my first post on this forum.
    I'va always been a fan of Marshall amps but I only play at home and frankly they are just too loud.
    I am only interested in valve amps and currently play through a Fender Hot Rod. I'm more than happy with the tone but it is unusable at low volumes.

    A JTM 30 has caught my fancy on ebay and I'd love to hear your opinions on thier worth for producing a decent tone at a low volume.
    Thanks, Graham.
     
  2. woemoejack

    woemoejack New Member

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    I own a jtm30, its great at low volume..actually its great all over.

    I would suggest playing on one if you can. Just so you can be sure. Usually you can get a good tone at any volume when an amp has a master voume along with a seperate channel volume, that way you can crank up the preamp, roll off the master, and get all the gain you want without killing yourself. Class A amps run the tubes hot all the time, where class a/b tubes get hotter the more you push them, the jtm30 is class A, so you can get the maximum tone at all volumes. Its a great amp, good stock speaker too. I run it with a tubescreamer, and it kills. it crushes baby chickens.
     
  3. RachelMorgan

    RachelMorgan New Member

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    IMO Tube amps sound like crapola at low volumes. I have a Hot Rod Deville 212 and made this little black box that goes in the FX loop. I can crank that amp and dial it back to about 86 to 90 db at 6 ft. I use the same set up on a Marshall Vintage Modern.

    My advice to people who need to play at low volume like at bedroom level is to go solid state. Peavey Bandits come to mind. I almost bought one myself.
     
  4. stryker59

    stryker59 Member

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    get an attenuator! crank your amp! sane volumes! sweeet!!
     
  5. uloozer

    uloozer New Member

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    I've had one for about a month now... I love the tone but I was using it during a jam session and after about 4 hours it started to fad in and out.. I'm sure it got over heated.... Decided to change the tubes since I bought it used but haven't used it much since... just haven't had time.... But yea it will work great for home use or a jam session, it kept up with a 5 pc. drum kit pretty well
     
  6. wolf1419

    wolf1419 New Member

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    I've used my JTM30 at home in a condo for a few months and it sounds pretty sweet. The clean channel sounds very nice at low levels - nice lively tone, and the distortion can work at low levels, but you have to play around a bit to get your preamp and output tubes tweaked in. I found that if you turn your master volume to halfway first, then dial in your individual channels for a comfortable clean volume, then experiment with your gain channel(gain & volume) you can get some great sounds, then you can turn your master up or down, with headroom to spare, have better sound and control of the total amp at whatever you consider to be your "reasonable starting volume" at halfway on the master. I think this gets all your tubes working a bit. This is just one approach for bedroom playing channel-switching and taking control of the amp. "Easy" to quiet down to 2,3,4 or up to 6,7,8 on your master when the neighbors are away without losing your input gain stages. "Individual preferences" and situations will always override this approach, but it's working for me and I'm in a condo, where I have to keep the peace.
    Oh yeah, just remembered - always clean your fx loop send/return jacks as they are a source of a lot of the cutting in/out and volume changes that people have. It was the same with my Ashdown amp until I figured it was a simple connection that gets funky from non-use. You can plug your cable in/out a few times every once in a while to keep it clean, or use contact cleaner if it's really dirty or corroded. If you're unsure just plug a short cable from send to return to complete the loop and see if that's the problem. One guy I knows just keeps the jumper plugged all the time to avoid cleaning. I like to just keep it clean. Your preference!
     
  7. felixq78

    felixq78 New Member

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    5 watts is way too loud for bedrooms.Valves of course.
    Here are the ratios:40 watts is 94% as loud as 50 watts.
    30 watts is 86% as loud as 50 watts.
    25 watts is 81% as loud as 50 watts.
    22 watts is 78% as loud as 50 watts.
    20 watts is 76% as loud as 50 watts.
    18 watts is 74% as loud as 50 watts.
    15 watts is 70% as loud as 50 watts.
    12 watts is 65% as loud as 50 watts.
    10 watts is 62% as loud as 50 watts.
    9 watts is 60% as loud as 50 watts.
    8 watts is 56% as loud as 50 watts.
    7 watts is 55% as loud as 50 watts.
    6 watts is 53% as loud as 50 watts.
    5 watts is 50% as loud as 50 watts.
    4 watts is 47% as loud as 50 watts.
    3 watts is 43% as loud as 50 watts.
    2 watts is 38% as loud as 50 watts.
    1 watt is 31% as loud as 50 watts.
     
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  8. jtm-series player

    jtm-series player New Member

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    what I play at home is the jtm 312 + the jtmc 112 cab.
    is that a good setup for a small room?

    YESSS!!!!

    I keep the clean volume knob a bit over noon, the gain and volume
    knob of the second channel on 3/4 and the master-vol. allways
    somewhere between 1/2 and 3/4.

    You can't play it in the middle of the nights - it's no headphone amp!
    but during the day it offers really good blues/classicrock tones at
    reasonable volumes!


    you can't compare these amps! the hot rod is a non-mastervolume 60 watt amp with 2*12!!! nothing like the jtm. actually I sold my hotrod deluxe (40w, 1*12) for the jtm-stack because it didn't sound good and was too loud
    for at-home-use.

    as for the overheating-roumors: all I can say is that I use 3 of them
    and never hat problems. but I also experienced that you have to keep
    your fx-loop clean (easy - plugging in nd out several times)
     
  9. felixq78

    felixq78 New Member

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    They are way too loud for the bedroom, as you can see from the watt scale they're not much quieter than a 50 watt amp BUT They are a great amp. I've had many Marshall amps including 2 of the JTM variety a JTM60 3x10 and my present amp a JTM30 2x10.
    I reckon they're Marshall's best sounding amp. When cranked you get that typical creamy smooth Marshall overdriven tone but when played clean they leave all other Marshalls for dead. I'd go as far as saying that they're as good as some Fender clean configurations, I've had a few Fender amps and my JTM30 is comparable.
    What must be remembered is that they are UNRELIABLE they tend to overheat and if left un-modded the amp will eventually cook the power tranny.
    The modification isn't too expensive and it's as simple as installing a bias pot. They're manufactured with a fixed bias, apparently this is why they overheat. Murray at Valve Heaven in Surry Hills, Sydney Australia did the work for me and the amp now runs cooler and sounds better than new, he's amazing.
    Now I have a keeper.
     
  10. drewz120

    drewz120 New Member

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    Unfortunately no one can decide that except for you. I have to disagree with alot of people on this topic because I went through the same thing you are going through. I got a 100w Plexi with NO MASTER VOLUME so my choice was get a attenuator or go deaf after 2 chords. I feel too many people say it sounds like crap or it sucks all the tone out. I personally love my amp (100w Plexi, 1960ax Reissue Vintage cab) and my attenuator (THD Hotplate). People told me don't get it for a bedroom it cant be done...I seem to be playing in my man cave just fine without losing "TONE" which is a word I hate by the way. If you are a purist and think you can hear ever little difference in sound then don't do it because you will be like others here. On the other hand, if you aren't super picky and you have the ability to play loud (not piss off your whole block loud) but loud enough to where most of your house could hear it then you will be fine. Like I said, there were alot of people who told me it wouldnt be a great idea but I have loved it since. Unless you play gigs or have friends who have studios, I say your house is the next best place to crank it.
     
  11. Jamesmason

    Jamesmason New Member

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    Have a look at the blackstar ht-1r or ht-5 for bedroom playing.
     
  12. All4Tone

    All4Tone New Member

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    So in effect, all you are doing is decreasing the volume through the effects loop before the power tubes? How is this any different from just turning the amp down? It is exactly the same result at the power tubes. What is in the little black box?

    Funny you should mention a Bandit, I recorded a couple of them in my studio and those little amps scream! Not bad for SS.
     
  13. sanrico

    sanrico Member

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    Sorry to resurrect an old thread, but I just had to put in my two cents. I have this identical amplifier.

    I also have a 7 month old baby who goes to sleep at 7pm. And I have a wife, who will kill me if I wake the baby while pretending to be Edward Van Halen.

    All that to say this amp is PERFECT PERFECT PERFECT for home use. It has EXCELLENT tone at low volume. Great clean and true Marshall crunch. If you want to crank it with a band, it has plenty of juice for that, too.

    The nice thing is the master volume isn't so touchy like my JCM 800 was. I can get exactly the volume I want for late night practices and it sounds great. All the time, I watch TV late Saturday nights with a guitar on my lap and the amp sounding great, running over scales while not waking up the rest of the family. It sounds fantastic.

    AND it's light and small. It's only about 15" tall and 22" wide. And it only weighs 38 pounds. It's a lot easier for my wife to stomach this in the living room rather than the Marshall Half Stack that used to be there.

    I 100% recommend this amp for home use.

    [​IMG]
     
  14. sccloser

    sccloser Well-Known Member

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    I had a JTM30 for several years. I had mine modded with an adjustable bias pot and el 34 output tubes. It was a great amp for playing in the home. It also did OK at band practices if I ran it through a 4x12. IMO, this amp has a sweet spot at around 1/2 the volume level. Mine did not seem to sound better pushing it much harder to my ears. But for playing in the house it sounded pretty good.
     
  15. Duppy

    Duppy New Member

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    I've always been interested in this range of amps but when I started looking into them people would always put them down because of poorbuild quality, reliability issues and the over heating syndrome.

    Maybe I should revisit them. I'd be interested in a head, what models were available and what did they run in the output section?
     
  16. Papus

    Papus Well-Known Member

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    30w is loud bro... Virtually as loud as 50w and almost as loud as 100w.
    If you enjoy power tube distortion, forget it for home use.
    I dime my 20w 2061x at home all the time but the windows rattle and the floorboards shake, the wife hates it.
    Try 5w or 1w if you like to drive those tubes hard
     
  17. gbravo

    gbravo New Member

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    I've had my JTM30 for about 8 years. There are issues of reliablity with these amps; they are biased too hot from the factory. Most of the time this leads to overheating which then causes intermittent volume dropouts. The one I own had that problem. I took it to a tech who installed an adjustable bias and tuned it up. No problems since then (this was about 4 years ago). I use it constantly; right along side my 69 50W JMP Plexi and my 68 50W Tremolo. The cleans on this amp are amazing - almost Fender quality. It takes pedals extremely well and it's definitely band capable. Perfect for home use (it's got volume knobs :)). A steal if you can find one...
     
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  18. Duppy

    Duppy New Member

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    @gbravo and how does it compare tonewise to those two Plexi beauties you've got? Obviously not too bad or you wouldn't have hung onto it.
     
  19. sccloser

    sccloser Well-Known Member

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    I wish I would have kept my JTM 30 instead of my DSL 401. I think I preferred the JTM's tone.
     
  20. gbravo

    gbravo New Member

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    Not similar at all. The JTM30 distortion channel is very buzzy and not even close to the tone that a plexi puts out. The clean channel on the JTM30 is pretty awesome; it's a great pedal platform. I used to use the JTM30 and a tubescreamer for rhythm and a plexi with a 2X12 for lead. Volume wise they're pretty close.
     

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