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All about Marshall's JVM Series

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PostPosted: Tue Jul 20, 2010 9:22 am 
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Joined: Mon May 31, 2010 9:39 pm
Posts: 19
Hey guys it's me again,and I'm going to change my tubes because the V5 tube has died and since I bought my amp used,I think I'm going to take it to guitarcenter and have them retube it for me.What tubes do you guys suggest,I really don't know much about what the different tubes sound like because I'm only 14 years old and I'm very new with tube amplifiers.What do you suggest??
Thanks,
Justin


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PostPosted: Tue Jul 20, 2010 12:33 pm 
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Private Parties
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Joined: Fri Dec 04, 2009 10:15 pm
Posts: 185
Funny enough, I first recommend you don't take it to Guitar Center to have it retubed. They don't always carry the best tubes and only God knows what their "techs" are like-If they even have any. However, you can use them as a resource. I called them and found out who they use for any repair work on Marshalls in my area. Given the agreement they have with Marshall, they have to use a certified Marshall tech and they should willingly give you the phone number for a tech in your area. Also, check the Marshall website and search to find service centers for your amp.

For tubes, SED winged C EL34 for the power amp. For the preamp, it's kinda a personal choice thing. Many people on this forum like different tubes. I use mostly JJ 12ax7's in mine. Although, I recently tried a Groove Tubes Gold Series 12ax7 in the V1 position and like the result. In truth, it's not a huge difference for me from the JJ to the Groove Tube but there are many other manufacturers that could give you a more definative difference in tone, feel, brightness, etc.

Good luck, and read through this forum, there's a boatload of info in these pages on tubes and what they do/how they sound, etc. In the end, you just have to buy some and try them out.

_________________
Guitars: Schecter C1 Classic & C1 semi-hollowbody, Ibanez S Series 7 string, Rebuilt, Effed over, semi-destroyed and resurrected Ibanez S Series-AKA "Dragon", Sterling JPM100d Petrucci, Alvarez acoustic, 1971 Geronimo Pena Fernandez classical (Brazil), 1972 Gianini classical (Brazil), 1960's Gretsch Country Gentleman.
Amps: JVM 410H, Bugera 6202 (mod w/ Heyboer OT, and Merc Mag choke), Roland Cube, Mesa 4x12 cab w/ Celestion V-30's.
Effects: TC Electronic Gmaj, ISP Decimator ProRack G, Digitech Whammy, Dunlop Zack Wylde Wah, MXR 10 band EQ.
Recording: Apple Macbook Pro, Presonus Firepods, Apple Logic, Alesis Monitors.
Other: Zyzzx, Mogami and Monster cables, RoadRunner Road Cases, Samuel Smith's Oatmeal Stout, Breckenridge Vanilla Porter.


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PostPosted: Tue Jul 20, 2010 5:20 pm 
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Joined: Sun Mar 07, 2010 7:35 am
Posts: 5286
Location: Slovenia, Europe
If your into aggresive sound, metal and shit, give the TungSols a whirl. Granted, you can kiss smooth, round bluesy tones goodbye, but changing the PI doesn't make that much of a difference in tone, it's more the amps feel.

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Bam Bam wrote:
Where's the little angel on the other side saying, "No, Bill, you should spend your hard-earned money on something more sensible and responsible [than another amp]."?
Oh yeah, wrong forum!


GUITARS:
Explorer w/Nailbombs; Yamaha SG2000; Gibson SG '61 Reissue; Ibanez RG370DX w/DiMarzios; Squier Classic Vibe Tele;
Yamaha LLX6A
AMPS&CABS:
Marshall JVM410H (EH in V1, V5/Chinese 12AX7 V2-V4; -ve fdbk mod, choke mod, plexi mod)
MESA 2:90+TriAxis (TungSol V1, EH V2, JJ V4); Marshall 1960A cab w/V30; Marshall MC212 cab w/G12T-75; Yamaha THR10
FX:
BOSS GT-6; Dunlop crybaby w/tb
OTHER STUFF:
Proel Esoteric cables, Ernie Ball strings; Dunlop Ultex Sharp picks


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PostPosted: Wed Jul 21, 2010 6:15 am 
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Garage Band

Joined: Tue Dec 08, 2009 12:18 pm
Posts: 39
Right now i have this set in preamp:

V1: Tungsol 12AX7
V2: Tungsol 12AX7
V3: Sovtek 12AX7 WA
V4: Red coloured Marshall ECC83 VLVE 00067
V5: White coloured Marshall ECC83 VLVE 00055

I use Rocktron Intellifex in the loop, and this combination is very kicky, tight and it has quite nice definition.

Yeah, Bryanman is right, no reason to take JVM and give it to music store techs for this operation;
Just go & buy 5-10 different (Mesa, JJ, EH, European Philips, Shuguang, Sovtek, Tungsol etc.) preamptubes and start checkin´ them out. When you find sound that YOU like (check out every channel, of course), write that setting up and stay in that?


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PostPosted: Mon Jul 26, 2010 2:40 pm 
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Joined: Tue Dec 08, 2009 12:18 pm
Posts: 39
My suggestion is this:

V1: Tungsol 12AX7
V2: JJ 12AX7
V3: Sovtek 12AX7 WA
V4: Shuguang 12AX7
V5 (PI): Tungsol 12AX7

This sounds pretty nice with Rocktron (And i believe that with T.C too) At least it gives many opportunities, and i believe, that is the "main" thing?

With this pre-amp set, i found many different things. With OD1 Orange there´s sound which Lukather uses is "Luke" Album etc. Of course it needs some effects, but still...

Anyway. This preamp set if very, very nice one for me IMHO.

Try this with T.C or Rocktron XPression.


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