On Wed, 23 Jun 2010 11:10:17 -0500, AZ Nomad wrote:

On Thu, 24 Jun 2010 00:30:47 +1000, Grant wrote:
On Wed, 23 Jun 2010 13:23:04 +0000 (UTC), Meat Plow wrote:

On Wed, 23 Jun 2010 08:48:22 +0100, N_Cook ??o??:

Just curious about these - how were they used? All that is known is they
came from an audio lab.
About 200 watt, 2.8 ohm vitreous resistors. 200watt estimated, by me,
from surface area scaling of 2.5 and 6W ones, these are 210 mm long 35mm
diameter. Some sort of multiple series and parallel for 2 ohm etc or
with L and C for speaker simulation ?

Most newer SS amps are rated to a minimum of 2 ohms.

And cheapie meter leads might account for the extra 0.8 Ohms?

You'd need at least 90' of them (at 20 AWG)

or 8' of 30AWG, but I've never heard of such slim wire
being used for probes.

I got a cheapie with that much resistance, is why the number rang a
bell. A cheapie no name meter that measures .8 or .9 ohm for short
circuit with its skinny leads

But, the OP mentioned upthread the 2.8ohm value was marked on the
resistor, the size of his resistors are similar to some 5ohm 300W
resistors I have here (Ohmite C300K5R0E).

Grant.
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