Pages

▼

21 August 2011

Yamaha GA15

This how you make a practice amp,using power transistor like back in the old days,Push Pull design.Nowadays most amp uses the shitty TDA20XX IC.

Well done Yamaha.




13 comments:

  1. Khalid Fadil24 August 2011 at 09:40

    Still have my Yamaha, eh? Very nice...

    ReplyDelete
  2. YusTech24 August 2011 at 10:07

    GA stands for Great Amplifier.

    ReplyDelete
  3. Khalid Fadil26 August 2011 at 11:48

    Yes, it does!

    ReplyDelete
  4. Unknown21 November 2012 at 23:24

    hi i have the same amp and the speaker was burned so is put it out of there.. is there anything that i could do so that i can use the parts that are still there..?

    ReplyDelete
  5. Unknown3 April 2015 at 00:42

    Hello,

    Someone has been kind enough to tell me the values of VR1 and VR6

    Thanks

    ReplyDelete
  6. Abderrahim30 July 2015 at 05:35

    Hi

    i was trying to get that amp dissasembled but couldn't get that part off, is it glued ?

    ReplyDelete
  7. PhantomMessiah66623 February 2019 at 05:16

    Can you tell me the values of the R20 and R21

    ReplyDelete
  8. YusTech24 February 2019 at 18:25

    My apology sir, I dont have the amp with me.

    ReplyDelete
  9. amereras15 August 2019 at 06:12

    I am trying to add a line out connection to this truly " Great Amplifier".
    Any suggestions on where to take a connection from.

    ReplyDelete
  10. QWERTY17 June 2020 at 07:22

    Probably the headphone jack

    ReplyDelete
  11. amereras17 June 2020 at 12:13

    I added new jack for the Line out and tapped it out from after the pre amp section. Only the clean sound comes from the Line out jack now. The distorted sound does not.

    ReplyDelete
  12. YusTech17 June 2020 at 22:40

    This post was too long ago, I dont remember much of it now buy I appreciate the interest. Thank you visitors.

    ReplyDelete
  13. Unknown10 October 2021 at 05:46

    Tengo problema!!! Con este modelo de amplificador!!! Al encenderlo hace un ruido extraño!!!
    Alguien sabe a que se deberá???

    ReplyDelete

I value your comment.