+ Reply to Thread
Page 1 of 3 123 LastLast
Results 1 to 10 of 21

Thread: Wtd: pre amp

  1. #1
    Join Date: Dec 2012

    Location: Stoke on trent

    Posts: 959
    I'm Steve.

    Default Wtd: pre amp

    Wtd: pre amp to suit 300B power amp with input sensitivity of 0.5VpK and input impedance of 100k OHM.
    I've bought a glasshouse passive but there's no sound until I get 3/4 around the dial.

    Less than £300 and compact if possible.
    Thanks

  2. #2
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 6,878
    I'm Lawrence.

    Default

    What's VpK not heard of that before?

  3. #3
    Join Date: Dec 2012

    Location: Stoke on trent

    Posts: 959
    I'm Steve.

    Default

    I don't know. That's from the spec sheet in the manual. It's a trafomatic 300b power amp.

  4. #4
    Join Date: May 2008

    Location: United Kingdom

    Posts: 96
    I'm Malcolm.

    Default

    I believe is stands for peak or maximum voltage

  5. #5
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 6,878
    I'm Lawrence.

    Default

    Found it, peak voltage rather than RMS. I thought it meant volts per something which didn't make sense.

  6. #6
    Join Date: Apr 2012

    Location: London

    Posts: 685
    I'm James.

    Default

    That's why you need excess gain, cos of the quiet bits. I'd say a standard pre should see you through nicely.

    What makes a stonker for three hundred quid I can't say, but there will be one out there!

    Sent from my GT-I9195 using Tapatalk

  7. #7
    Join Date: Dec 2012

    Location: Stoke on trent

    Posts: 959
    I'm Steve.

    Default

    Should the passive I have work then? There is nothing until 3 o clock then at fully open it's still pretty quiet

  8. #8
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 6,878
    I'm Lawrence.

    Default

    I'm no expert but I'm surprised at the result, what speakers are you using?

  9. #9
    Join Date: Dec 2012

    Location: Stoke on trent

    Posts: 959
    I'm Steve.

    Default

    Still got my WLMs

  10. #10
    Join Date: Apr 2011

    Location: Northampton

    Posts: 27
    I'm Paul.

    Default

    Did you hear the power amp working ok before you took it away?

    Assuming the power amp is ok then this pre might not be very fashionable but is very good for the money:

    https://www.ebay.co.uk/itm/NuForce-P...827e%7Ciid%3A1

+ Reply to Thread
Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •