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9 pin jack for Preamp

Discussion in 'Preamps / Channel Strips' started by Bob Barcus, Feb 4, 2011.

  1. Bob Barcus

    Bob Barcus Active Member

    I have a 1992 Soho Quatro 4 tube, 2 channel preamp.It is a "better" version of a Kitty Hawk Quatro.The input jack on the front pannel has borken its threads. It is a Non PCB mount.and it is like a Marshall 9001 jack Not grounded to the front .If anyone EVER knows where I can find one PLEASE let me know >bacusbob@yahoo.com. Also can I use a 6 pin Cliff jack Thanks
     
  2. dvdhawk

    dvdhawk Well-Known Member

    Are you talking about something like this:Neutrik NMJ6HC-S or this Rean NYS212?

    Both are 6 contact TRS 1/4" insulated panel mount jacks.
     
  3. TheJackAttack

    TheJackAttack Distinguished Member

    The original on those was 8 pins plus a chassis ground wasn't it? If you're going to cut two pins and a ground I guess I'd want to know what you're going to do away with. Was it just a combo jack? Do you have a pic of the non functional jack?
     
  4. Bob Barcus

    Bob Barcus Active Member

    9 pin Jack

    Yes it looks alittle like both and you are right the ground is on the top The only schematic I have seen that looks like it is the old Marshall 9001 preamp.Its a pretty good preamp for Clean and Crunch The other Hot channel I dont use to much.I do not know how to put a picture on this site.My girlfriend might be able to do it or send one over the phone....
     
  5. Bob Barcus

    Bob Barcus Active Member

    I do not know what you mean about cutting two pins and a ground ? all I want to do is replace it.But I cant find one anywhere.It is just a Guitar preamp and the threads holding the nut to the front pannel broke.
     
  6. dvdhawk

    dvdhawk Well-Known Member

    Are they solder tabs (for soldering wires to directly), or does this jack mount onto a circuit board? I can't conceive of any reason you need a 8-pin + ground for a guitar jack. We'll assume the jack is shielded from the chassis for a reason.


    Go to: Neutrik's / Rean website and find which jack you think is correct.

    Then visit: Full Compass


    Plan B: desolder the jack from Hot channel and move it over.
     
  7. TheJackAttack

    TheJackAttack Distinguished Member

    Your topic says 9-pin jack. You asked if you could get by with a six pin jack. I guess I'm wondering what is connected to all the pins. A six pin non-combo jack is often a switching jack. A nine pin jack is often a combo switching jack. I think I would completely remove the old jack and go to the link DVDHawk gave you. Really paw through the Neutrik site as they do really good pictures. A metal jack would probably alleviate the concern over breaking plastic threads.
     
  8. Bob Barcus

    Bob Barcus Active Member

    The Jack is Not PCB mounted,and it is All plastic so it doesn't touch the front pannel The ground connects to a lug on top of the jack It switchs between 2 channels...1, Clean,2,Crunch and 3,Lead ,4,Hot..
     
  9. Bob Barcus

    Bob Barcus Active Member

    The only 9 pin I have seen was on ebay but its a PCB mount for Fender amps made in 1989-92 and the theard part is not long enough.
     
  10. TheJackAttack

    TheJackAttack Distinguished Member

    You could get a metal jack and wrap the outside with electric tape or smear it with silicone. If you don't need a combo jack then a six pin switching jack ought to do the trick provided the hole is the correct size. Of course, if the new jack is smaller you could wrap it with rubber sealing tape too.
     
  11. Bob Barcus

    Bob Barcus Active Member

    I guess I need to go to a amp tech and pay a $60. bench to see what can be done.These preamps go for $300 on ebay when they seldome do come up. I paid $200 new for it in 1992 and put and vintage RCA mullards in it really good little preamp
     
  12. TheJackAttack

    TheJackAttack Distinguished Member

    Neutrik - Audio - SlimLine - NRJ6HF

    Take at look at the pdf drawing. This is six pins.
     
  13. TheJackAttack

    TheJackAttack Distinguished Member

  14. TheJackAttack

    TheJackAttack Distinguished Member

  15. TheJackAttack

    TheJackAttack Distinguished Member

    Switchcraft : 1/4" 3 Cond Enclosed Jack
     
  16. Bob Barcus

    Bob Barcus Active Member

    Thanks I still need to take it to a pro.I could take the rear input jack out and put it in the front... Thanks for the help
     
  17. mdb

    mdb Active Member

    Check these out...

    Amphenol MP Series connectors @ Redco Audio

    Maybe you could modify and make your own 9-pin.
     
  18. Bob Barcus

    Bob Barcus Active Member

    1/4 in 9 Pin

    Thanks the closest thing if have seen in a Newtrik 3x normal 1/4 in jack,but since I dont really know what goes where Unless I have one like the broken jack.Also it is a NON PCB type jack.I guess you can still solder onto the lugs Thanks for you Help....
     

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