NAD - Peavey 6505 + Combo

Discussion in 'Other Amps' started by Jethro Rocker, Sep 19, 2019.

  1. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    I had one of these years ago and traded it on the 5153 mini head. Wished I would have kept it, gets nice floor chunk at lower levels. Given the size of venues we usually play, I kinda missed it. Found a good used one today!

    Only issue is static for the first 20 secs after releasing standby. Once it warms up it's fine. Changed some pre tubes. Haven't tried power tubes yet. As long as it sounds good and works fine I don't really care. Killer gain.

    [​IMG]
     
  2. South Park

    South Park Active Member

    Joined:
    Sep 14, 2019
    Messages:
    340
    Likes Received:
    205
    Peavey made some good stuff. All high gain amps have some static. Rock on
     
  3. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    No I realize it has high gain hiss. This is static. No source, volume zero. Seemed to be worse when tapping amp top thus the micro tube thought. But it's not that. I might try a conditioned power supply. Or power tubes.
    Oddly when I removed the chassis, it did not do anything amiss when I rapped on the top edge of chassis. But it did once mounted again.
    I think it's once it warms up it's fine.
     
    Last edited: Sep 19, 2019
    Mitchell Pearrow likes this.
  4. South Park

    South Park Active Member

    Joined:
    Sep 14, 2019
    Messages:
    340
    Likes Received:
    205
    You are getting oscillation in the gain stage.it is the same thing as microphone feed back.you have some much gain it is leaking in to the grids and getting amped up.a lot of times something needs to be grounded
     
  5. Adieu

    Adieu Well-Known Member

    Joined:
    Jan 12, 2013
    Messages:
    1,062
    Likes Received:
    999
    20 seconds hiss then no more is some kinda tube issue imho

    Don't blame it on the high gain circuit, that's not how it works

    OP: you keeping it stock or speaker swapping?
     
    Jethro Rocker likes this.
  6. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    No I have NO guitar plugged in. Volume at Zero. Gain at zero. Noise starts as soon as standby switched off. It is static sort of like a dirty pot. It is not. I cleaned them just in case. It is not a microphonic tube as far as I can tell.
    I will look at whether it is coming from pre or power amp.
     
  7. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    Not sure yet. I might try a V30 in there.
     
  8. Gunner64

    Gunner64 Well-Known Member Premium Member

    Joined:
    Nov 16, 2013
    Messages:
    4,840
    Likes Received:
    5,393
    Location:
    Midwest, USA
    Dirty tube socket perhaps?
     
  9. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    Yes worth looking at too. I'll play today
     
  10. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    Changed power tubes. It's silent now with volumes down. Perfect!
     
  11. solarburnDSL50

    solarburnDSL50 Well-Known Member

    Joined:
    Aug 8, 2008
    Messages:
    15,505
    Likes Received:
    8,761
    Location:
    Wetville
    Congratz!

    Power tubes get noisy/static too. Good call bud.

    What speaker is in it?
     
    Deep Purple fan likes this.
  12. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    Yep.
    It's the stock Sheffield. Sounds ok so far. I'll play when I get a chance. Try a V30 to brighten it up some. Or what have you. T75. It's a heavy large bugger for a 1x12. Nice addition to the fleet though. Something different.
     
  13. solarburnDSL50

    solarburnDSL50 Well-Known Member

    Joined:
    Aug 8, 2008
    Messages:
    15,505
    Likes Received:
    8,761
    Location:
    Wetville
    Cool. Was wondering if it was a Sheffield. Id rock it stock and see too.

    yeah man they are not grab and go combos by any means. Love the tones though.
     
  14. South Park

    South Park Active Member

    Joined:
    Sep 14, 2019
    Messages:
    340
    Likes Received:
    205
    Good job rock on
     
  15. Jethro Rocker

    Jethro Rocker Well-Known Member

    Joined:
    Mar 11, 2011
    Messages:
    7,067
    Likes Received:
    6,930
    Location:
    Saskatoon, Canada
    I will!! Lookkng forward to gigging it.
     
    Mitchell Pearrow likes this.
  16. Deep Purple fan

    Deep Purple fan Well-Known Member

    Joined:
    Nov 1, 2014
    Messages:
    2,441
    Likes Received:
    2,276
    Location:
    Virginia
    Congrats on your find. Those are great amps.
     
    Jethro Rocker and solarburnDSL50 like this.
  17. Mitchell Pearrow

    Mitchell Pearrow Well-Known Member

    Joined:
    Jul 2, 2018
    Messages:
    7,687
    Likes Received:
    10,953
    Location:
    Moreno Valley CA
    Congratulations JR nice amp
    I was also going to say try power tubes, I have had a bad one on 2 occasions with the same thing you described, cool you got it figured out.
    Rock on with it bro!
    Mitch
     
    Jethro Rocker likes this.
  18. Kookaburra

    Kookaburra Member

    Joined:
    Jul 19, 2019
    Messages:
    50
    Likes Received:
    56
    Location:
    Phoenix, AZ, US
    Have not played one myself, but one of the guys in Cherry Monroe used one when I saw them around 2006. It sounded killer!

    Congrats!
     
    Jethro Rocker likes this.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice