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In Reply to: RE: Thanks. Do any of the reccos below have the needed high passed high level outputs? nt posted by BRab on May 02, 2017 at 14:39:17
This assumes you will run speaker wire to the sub and use the speaker level output terminals on the sub to the monitors.
You need to know the crossover frequency for the high pass filter. A good starting point is to look at your monitor specs and identify their low frequency -3db point and the nominal impedance of the monitors. Put this info into this calculator in the link and use 8 ohms for the low pass number (the program needs this field to work, but you don't need the inductor it calculates). The C1 value is the calculated capacitance. Then call Parts Express and get a suitable cap. They will help you select the right type and voltage rating. Order 2 caps. Solder the cap in series with the speaker wire to the positive speaker wire to the monitors. One per speaker.
I'm an electrical engineer slo these instructions seem ok. Other inmates may have easier to use instructions. It is worth doing to get a better sub.
Follow Ups:
How about just this?
What speakers?
nt
Ok
From the specs it looked looks like the -3 db point is 46 hz
I'd probably go with a single series cap first order crossover sized for 50 - 60 hz point
The inductor in the prebuilt crossover makes it a second order crossover with a steeper slope. You may lose some of the character of what looks like a fine monitor and the gentler slope will make integration easier with the sub. If the crossover frequency is too high you will be able to localize the sub.
Probably cheaper to.
nt
nt
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