ceriatone jtm45 muddy

porkster

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I have had my jtm45 a few weeks now, every day after work i am straight on it, cant wait to get home & give it a whirl, anywho, the cleans are gr8 sustain all day has a bit of the jtm45 sag that i love
but i turn it up full ball to have the overdrive its muddy sounds blocked , even with the treble & mids on 10 bass on 0 , if i hit it with the ts9 tube screamer it gives it a mid boost its ok, but i want the mashall overdrive ,
like i said its been a few weeks now, i might be trippin but, it seems tp be opening up after being played a lot since i got it, i dont no if its the caps have been burned in or what lasrt night i turned it full ball & i nearly shit myself , it sounded so much better nearly nailing acdc back in black , I might add it has a PPIMV MASTER VOLUME I dont know if it would affect the tone at full ball , my cab is a 16 ohm , i have heard that you can use a 8 ohm cab to give your amp a more agressive tone , i am just wondering if anyone has had a brand new amp built & as time went on & played more it sounded better

cheers paul.
 

EndGame00

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JTM45's is a very bassy amp, especially when you crank the volume up, it becomes flubby... What speakers are you running with it?
 

porkster

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JTM45's is a very bassy amp, especially when you crank the volume up, it becomes flubby... What speakers are you running with it?
You aint wrong there mate, jtm45,s are
bassy as, I always keep the bass on 0 the most i would use bass is 2. presence 4 or 5 mids & treble 10
I am running a celestion vintage 30 in a single cab, I want to get a 2 x 12 with a set of greenbacks apparently
they break up earlier .
 

Darkburst

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I had a good JTM45 clone and sold it for the same reasons. It's not the classic Marshall sound. Try a 2204 or clone. Just make sure you can turn it up a bit. These old school amps need volume to sound their best.
 

alnico59

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They sound great with a Strat.
Also bright PAF style pu's in the LP, say something with an A5, will cut better.
I have a tweed Bassman, so been down this road.
 

goldtop0

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I've got an 'old' Ceriatone JTM45 head with the white front panel(not made anymore) and set it up pretty much the same as yours but with Bass on 1. Mine is a very loud amp for a 30-35w, my amp tech tells me it powers up to around 43 watts peak.
As is said they are bassy sounding but using alnico speakers will help a lot in a 4x12 or 2x12 cab.
I got 30w Weber Blue Dogs and Silver Bells as they're cheaper than the Celestion Blue and Scumback alnicos.
 

Johnnyslim

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I have a Metro Amp JTM 45. I used to plug straight in Vol 1 (top left). A lot of players use the usual channel jumping. George at Metro Amp and many others use a Y-cable and plug into the top two inputs. I tried this and it really cleaned up the bass heavy response. I find it more useful than the usual channel jumping.
Settings on my JTM 45: 2x12 Swanson cab with Dec 1965 Celestions
Presence 5 1/2
Bass 0
Mids 10
Treble 8 1/2
Vol I 7
Vol II 5 1/2
 


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