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TPA 3116 vs the tripaths

Discussion in 'New Gear - Values' started by Poultrygeist, Feb 11, 2014.

  1. Yatsushiro

    Yatsushiro Member

    Messages:
    75
    Location:
    In A Small Village, UK
  2. wushuliu

    wushuliu Well-Known Member

    Messages:
    962
  3. natger

    natger Well-Known Member

    Messages:
    512
    Proprietary Icepower chips.
     
  4. bubba42

    bubba42 Active Member

    Messages:
    179
  5. natger

    natger Well-Known Member

    Messages:
    512
    bubba42, Active Member.
     
  6. Yatsushiro

    Yatsushiro Member

    Messages:
    75
    Location:
    In A Small Village, UK
    Power supply is on the board, you connect straight to mains supply, 110v or 230v (jumpered selection), fused and switched as you see fit.
     
  7. Yatsushiro

    Yatsushiro Member

    Messages:
    75
    Location:
    In A Small Village, UK
  8. bubba42

    bubba42 Active Member

    Messages:
    179
    I asked about US shipping, did anyone else ask and get a reply?

    Thanks Yatsushiro!
     
  9. rooster2001

    rooster2001 AK Subscriber Subscriber

    Messages:
    94
    Location:
    Murrells Inlet, SC
    .
    I asked as well. No reply
     
  10. natger

    natger Well-Known Member

    Messages:
    512
    Respons from pop980 for me took 3 hours, but that was on a mondaymorning, so not during weekend and my timezone is close to seller's.
     
  11. Yatsushiro

    Yatsushiro Member

    Messages:
    75
    Location:
    In A Small Village, UK
    I bought mine just after lunch on Friday (UK time) - within minutes I had a message apologising for not being able to post until Monday morning, which suggests a 'weekday only seller'; we all need our weekends!
     
  12. rooster2001

    rooster2001 AK Subscriber Subscriber

    Messages:
    94
    Location:
    Murrells Inlet, SC
    He replied about an hour ago and is getting me a shipping quote for 2 boards. I'll post the amount when he gets back to me.
     
  13. wushuliu

    wushuliu Well-Known Member

    Messages:
    962
    I'm reading the 50asx2 has an input impedance of 6 or 8k. Is that correct? If so, it may need a buffer for best performance.
     
  14. natger

    natger Well-Known Member

    Messages:
    512
    Yes inputimpedance is fully comparable with audiobah tpa3116 ampboard, so like audiobah it can be used without buffer, but when used with passive volume control eg, one would best use a buffer
     
  15. lico

    lico Super Member

    Messages:
    1,960
    Received the TPA 3255 eval board earlier this week. It's a quality kit - much better than much of the cheap Chinese junk in comparison. Need to make/find a suitable supply for it, haven't listened yet. Don't need all the power, but what the heck was same price as the others.

    I have a few vintage toroidal xformers around the place which could be used build a single ended supply so am considering that route.

    Just based on what Natger says and the state of power supplies out there for sale, I haven't found one yet that would be seem adequate for this board to do it justice. 52V 12A single ended. Ideas?
     
  16. natger

    natger Well-Known Member

    Messages:
    512
    On evm all analog low voltage circuits are supplied by a switching regulator, just the switching amp 3255 high voltage is fed "directly" by external PSU. You'll always have a switching powersupply, vintage linear external PSU or not.
    http://www.ti.com/lit/ds/symlink/lm5010a-q1.pdf

    Good and "cheap" probably these
    https://hifimediy.com/power-supplies/diy-power-supplies/SMPS600RS-48V-110V
    Other good and "cheap", you could contact Cresnet over at diyaudio
    http://www.diyaudio.com/forums/vendor-s-bazaar/281413-audio-smps-units-sale.html
     
  17. lacro

    lacro Active Member

    Messages:
    259
  18. natger

    natger Well-Known Member

    Messages:
    512
    Yes gbp15 for US shipping seems fair, same gbp15 shipping for 2 boards I think.
     
  19. rooster2001

    rooster2001 AK Subscriber Subscriber

    Messages:
    94
    Location:
    Murrells Inlet, SC
    Yep. He replied with shipping of $19.60 (15 gbp) for 2 boards.
     
  20. bubba42

    bubba42 Active Member

    Messages:
    179
    So, before I buy one, can anyone help me understand the pros/cons of this board? It seems I'd need at least some volume control or a preamp, right? That cable set that Yatsushiro posted would be quite helpful. What else should I know?
     

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