Posted by wunhuanglo [ 65.6.70.16 ] on July 16, 2004 at 22:49:10:

In Reply to: Re: Crap bought a bunch of worthless crossover parts posted by James W. Johnson on July 16, 2004 at 22:28:24:

the 25's, the 16's and the 8's - what are their dissipation ratings?

If the 8 ohm resistors are 20W, then two 8's in series will give you 16 ohms at 40W.

If you need 25 ohms, use three 8 ohm resistors in series for a total dissipation of 60W at 24 (close enough to 25) ohms. Power resistors are like what, + or - 10% ? So three 8 ohm resistors will give you something like 21.6 to 26.4 ohms, depending on how the tolerances stack up?

What's going to get kind of silly is making an 8 ohm, 100 watt part. You're going to have to series/parallel so may individual pieces it just won't be practical.

Replies:

• Obviously, I stand corrected... - wunhuanglo 05:22:51 07/17/04 (3)
  • Re: Obviously, I stand corrected... - Wayne Parham 01:39:16 07/18/04 (2)
    • Re: Obviously, I stand corrected... - Larry Acklin 11:43:19 07/19/04 (1)
      • Re: Obviously, I stand corrected... - Wayne Parham 17:22:36 07/19/04 (0)
• Re: The resistors that you do have... - James W. Johnson 23:24:03 07/16/04 (0)