RH0256R000FE02 | Vishay RH Series Axial High Power Wire Wound Resistor 6Ω 1% 25W 50ppm/C | Vishay
Is this resistor usable in a crossover? it seems to be the only findable 6 ohm resistor. Building a pair of overnight sensations... or would it be ok to swap for a 5.6 or a 6.2
Is this resistor usable in a crossover? it seems to be the only findable 6 ohm resistor. Building a pair of overnight sensations... or would it be ok to swap for a 5.6 or a 6.2
It has to be on a heat sink for anywhere near full rated power.
You could also use two (of another type) 12 Ohms resistors in parallel, those are common.
Resistors are the place to cheap out on XO builds- sandcast/cement are fine. The slight inductance is rarely an issue unless you're doing significant very high frequency shaping, and even a few non-inductive sandcasts (paralleled to right value, and several for power handling) are very cheap relative to a decent coil.
If the 5.6 or 6.2 are lower priced, you can use the 5.6 in series with an 0.4 ohm, or the 6.2 in parallel with a 1/(1/6-1/6.2)=186 ohms. Do the second, a 180 ohm resistor will be cheaper and more available than a less-than-1 ohm resistor, and either only needs to be rated at 1/2 or 1/4 watt or so.
I found the schematic here:
https://f48a8583-a-62cb3a1a-s-sites...EkZP21n3mB7jN1AQ8fSlDA-Xx8gw==&attredirects=0
If you want to be uh, "precise," you can measure the outputs of the tweeters, and change the 6 and 10 ohm resistors to make the outputs equal. I don't know offhand if different drivers of the same model vary in sensitivity enough to worry about, but if so, there you are.
Going from 6 to 5.6 or 6.2 would change the tweeter level by about (taking a SWAG) a tenth of a dB, which is pretty much an inaudible change.
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