Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: JustMike on February 13, 2019, 02:38:56 pm

Title: Input Jack for a Marshall JMP-1
Post by: JustMike on February 13, 2019, 02:38:56 pm

 I cannot find a part number and I need to replace one. The schematic just says MONOP under the jack (I think, hard to read). I've also read on other forums that the part some online retailers sell is not the correct part. Can anybody help?

Title: Re: Input Jack for a Marshall JMP-1
Post by: jjasilli on February 13, 2019, 03:22:15 pm

https://hoffmanamps.com/MyStore/perlshop.cgi?action=template&thispage=JacksPlugs&ORDER_ID=189572946

Title: Re: Input Jack for a Marshall JMP-1
Post by: JustMike on February 15, 2019, 01:11:10 pm

I don't see the exact part here.
 The part I need is threaded on the inside.

(https://www.tubeampdoctor.com/images/artikel/CO1095.jpg)
The Tube Amp Doctor has them, but the shipping across the pond for a $5 part is $30.00!

Title: Re: Input Jack for a Marshall JMP-1
Post by: sluckey on February 15, 2019, 01:24:19 pm

Better get several while you're at it.  :icon_biggrin:

Title: Re: Input Jack for a Marshall JMP-1
Post by: 2deaf on February 15, 2019, 02:06:38 pm

Looks like an S4 series cliff jack.  Tubesandmore.com has those as well as inside threaded nuts.  If you are real picky, they can order you exact parts directly from Marshall.