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  1. grapplesaw

    AC Thermal Switch Modifications ?

    I’ve been on this for a while . I’m building a 400 with my stock of parts sitting around and they need to be used. This doesn’t mean it will be a lessor amp. I’ve added extra row of transistors again. I bolt the neat sinks on and have all new components on the back plane. i Did this once before...
  2. grapplesaw

    White Oak Audio Design - Model ONE 1000 Watt Stereo Amplifier

    Just thought while your talking overheat switch wiring I’m using a low voltage dc switch with the heat switch in series with it to operate a soft start I’m putting in No ac along the run
  3. grapplesaw

    Carver C4000 needs parts

    Enjoy the carver c4000. I have a few c4000 and 4000t‘s around the house . They are great preamps
  4. grapplesaw

    Oppinioins on LED for early 400

    I got a green look by adding some blue stage light film over the warm white. My customer wanted the Marantz look
  5. grapplesaw

    Oppinioins on LED for early 400

    Im done with blue. Warm white is my way to go now
  6. grapplesaw

    THE Crossover Thread

    Well Lee with the PA2 you can control multiple memory points for different types and loudness Now the trick is to remember which is which
  7. grapplesaw

    Best Op amps to use in Phase Linear Series 2 preamps and amps?

    For the power amp If you are using a stock pl control board the only easy upgrade, if it is not already done , is a lf351. This also requires changing the power dropping resistors to 7.5 k 5 watt or larger. These dropping resistors may be wire wound or film. It’s the only place to even thing of...
  8. grapplesaw

    Happy Birthday Nando

    Hey Nando have a great day. Hope we meet up soon
  9. grapplesaw

    Funny pictures...

    Life is a bitch
  10. grapplesaw

    Funny pictures...

    My wife keeps sending me these I think she want to prove something
  11. grapplesaw

    Funny pictures...

    Well to keep with the theme
  12. grapplesaw

    White Oak Audio Design - Model ONE 1000 Watt Stereo Amplifier

    Very similar in weight to the dual 500 Bring it on I can handle that Lee there are some Pelican shipping cases The 1640 and 1640 may be more than big enough lots on eBay I bought a 1620 which may work as well
  13. grapplesaw

    THE Crossover Thread

    mine rolls off after 10-12k to nothing as well
  14. grapplesaw

    The future

    Here is an interesting interview. Not selling Elon but it seam the world is in for a ride
  15. grapplesaw

    The future

    There is more to this lack of sales. Tesla is eating their lunch. The average time for an Ev in high production is 60 man hours Tesla is 43 No wonder they can discount below others profit level. Volkswagen is in a serious Delma with these EV production world wide, they generate 40% of their...
  16. grapplesaw

    The future

    Watch this It’s an eye opener
  17. grapplesaw

    Another Newbie

    Im I’m in Surrey Welcome
  18. grapplesaw

    White Oak Audio Design - Model ONE 1000 Watt Stereo Amplifier

    Well you know Bob is a salesman Thanks Joe for clearing that up He really thought the WOPl was impressive
  19. grapplesaw

    White Oak Audio Design - Model ONE 1000 Watt Stereo Amplifier

    That is a great idea Mark the horse’s mouth is the captain , Bob Carver we’ve had a few interesting discussions including Casode transistor configuration for amps. Bob and my brother did a lot of business back in the 70’s and he helped develope Bob’s amp for the PA market, not so much in design...
  20. grapplesaw

    Don't forget, it's Lee's Birthday today

    Happy birthday Lee. Enjoy the day
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