Power amps

jim 249
jim 249 Posts: 347
edited April 2011 in 2 Channel Audio
Can power amps do weird things with sound or is it they work or don't work? Can they alter the sound to not sound clear or distorted?
Post edited by jim 249 on
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  • quadzilla
    quadzilla Posts: 1,543
    edited April 2011
    yeah, if the power amp has a problem, it can do "weird things".
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: Aural Thrills
    Digital: Pioneer DV-79ai
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Evolution 2000
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
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  • treitz3
    treitz3 Posts: 19,034
    edited April 2011
    Help us to help you. What is it that you are hearing and what type of amplifier do you have?
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • jim 249
    jim 249 Posts: 347
    edited April 2011
    The sound is not stable. It varies in volume and tone, really does sound strange. The amp is a Nakamichi PA5-II. I am going to try my Rotel RB970BX. I hope it has the power to drive my 2.3TL's. The cd player was swapped out and still the same. My turntable also will do the same thing. If it is not the power amp than the preamp might be bad.
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  • cnh
    cnh Posts: 13,284
    edited April 2011
    Sounds like it might be the pre. Switching out the amps will help determine that. It could be something as simple as needing some DeOxit on the controls or RCAs, or it could be something more serious.

    t...3 and others can help you diagnose this better as you start experimenting with your set-up.

    Hope it's something, simple!

    cnh
    Currently orbiting Bowie's Blackstar.!

    Polk Lsi-7s, Def Tech 8" sub, HK 3490, HK HD 990 (CDP/DAC), AKG Q701s
    [sig. changed on a monthly basis as I rotate in and out of my stash]
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  • treitz3
    treitz3 Posts: 19,034
    edited April 2011
    Try the Rotel at lower volumes and get back with us. What you are experiencing is not normal, as if I need to tell you this....
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • nooshinjohn
    nooshinjohn Posts: 25,422
    edited April 2011
    It may be time for the Nak to be refreshed as well. THat PA5 is a great amp worthy of the cost to restore.
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
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  • jim 249
    jim 249 Posts: 347
    edited April 2011
    Swapped amps, sound cleared up. Will play for a few days to see if it holds, then will swap back to the Nak5 to see if it comes back. Thanks for the suggestions!
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  • Goth child
    Goth child Posts: 38
    edited April 2011
    Is the Nakamichi a common ground power amp?
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