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Unread 09-27-2012, 05:48 AM   #1 (permalink)
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Replacement jack for JCM800 4X12

What's the best replacement jack for this type of cab. It's got a single 1/4" input, and it's wired for 16 ohms. I looked on Mojotone's web site, but there are so many options. Really not sure what to pick.
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Unread 09-27-2012, 09:14 AM   #2 (permalink)
Ken
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Re: Replacement jack for JCM800 4X12

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Originally Posted by 50WPLEXI View Post
What's the best replacement jack for this type of cab. It's got a single 1/4" input, and it's wired for 16 ohms. I looked on Mojotone's web site, but there are so many options. Really not sure what to pick.
Any decent 1/4" jack will do. I assume the plastic cup isn't cracked? Just be sure you solder the wires correctly to the ground and hot or you'll be out of phase when running a stack. I replaced mine with a jack from Radio Shack.

Ken
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Unread 09-27-2012, 09:34 AM   #3 (permalink)
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Re: Replacement jack for JCM800 4X12

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Any decent 1/4" jack will do. I assume the plastic cup isn't cracked? Just be sure you solder the wires correctly to the ground and hot or you'll be out of phase when running a stack. I replaced mine with a jack from Radio Shack.

Ken
The cup is cracked on the outside, I intend on replacing that as well. The jack is working fine, but I like to have spares around. Will this one work?

J3 Jack 4-Lug Input
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Unread 09-27-2012, 09:44 AM   #4 (permalink)
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Re: Replacement jack for JCM800 4X12

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Originally Posted by 50WPLEXI View Post
The cup is cracked on the outside, I intend on replacing that as well. The jack is working fine, but I like to have spares around. Will this one work?

J3 Jack 4-Lug Input
That will work but I don't like the plastic ones myself. Radio Shack has all metal jacks. Unlike guitar jacks, you don't need to worry about shielding on speaker jacks.

Ken
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PRO 4x12 from the 1970's
Woodson 2x12
1976 Les Paul Standard
Epiphone Les Paul knockoff
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Unread 09-27-2012, 02:12 PM   #5 (permalink)
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Re: Replacement jack for JCM800 4X12

I like these for cabs as they are enclosed, and the lugs are straight out the back (easier for soldering).

Mojo Jacks Mojo 2-Conductor Enclosed 1/4'' Panel Mount Phone Jack (Metal Bushing)
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Unread 09-27-2012, 02:49 PM   #6 (permalink)
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Re: Replacement jack for JCM800 4X12

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Originally Posted by Ayrton View Post
I like these for cabs as they are enclosed, and the lugs are straight out the back (easier for soldering).

Mojo Jacks Mojo 2-Conductor Enclosed 1/4'' Panel Mount Phone Jack (Metal Bushing)

The price sure is right! Just be sure with the leads out the back you get the hot and ground right if you use them. Pity it says "out of stock"!

Ken
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Music Man 65 Reverb late 1970's (?)
Late 1970's (?) Fender Champ
Marshall battery amp
1980 Model 1982A 4x12 cabinet G12H-80's 444 cones
1983 Model 1982B 4x12 cabinet G12-80's 444 cones
PRO 4x12 from the 1970's
Woodson 2x12
1976 Les Paul Standard
Epiphone Les Paul knockoff
ESP Lawsuit Explorer
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Unread 09-27-2012, 04:49 PM   #7 (permalink)
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Re: Replacement jack for JCM800 4X12

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Originally Posted by Ken View Post
That will work but I don't like the plastic ones myself. Radio Shack has all metal jacks. Unlike guitar jacks, you don't need to worry about shielding on speaker jacks.

Ken

OK, how about this? Closest thing I can find that looks sturdy.


Switchcraft 151 SWITCHCRAFT 1/4" Female Thick Panel Phone Jack | Full Compass
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Sour Mash 2x12 Marshall Clone w/WGS Invaders
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CBC Pedals "The Drive"
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Unread 09-27-2012, 05:34 PM   #8 (permalink)
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Re: Replacement jack for JCM800 4X12

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Originally Posted by Ken View Post
The price sure is right! Just be sure with the leads out the back you get the hot and ground right if you use them. Pity it says "out of stock"!

Ken
I linked that just for the quick pic, here is the Switchcraft version.

MS112BX Switchcraft | Mouser

You don't really need this style with the JCM800 style cup, but they are nice with older style Marshall jacks.
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