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hi I need a crossover accepting speaker level inputs with speaker level outputs. i want to cut all freq above 80hz. what product do i need? TIA
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I took a look at the Gallo website. Gallo recommends their own sub-amp which is basically an active crossover built into the amp. You may want to read the manual to get an idea of what to do.
It would seem that you would want to get an active adjustable crossover (or low pass filter) with the ability to adjust the gain rather than using a passive filter. Of course if you knew the exact xo frequency that would sound the best (80 Hz seems very high) you could get a passive filter and use the volume control on your integrated to adjust the gain but then you would have to do this every time you changed the volume of your system. The Behringer digital crossover DCX2496 (~$300) may be your best bet.
I may be an egoist but at least I don't talk about other people.
well I want to use my reciever as a gallo reference 3 "subwoofer amplifier"(It is meant to power the second voice coil in the ref 3's 10 inch sub)
Gallo's amp is rated at 240 watts into 4 ohms
http://www.roundsound.com/subwoofer-amplifier.htm
So is this in-line crossover from parts express a good way to go?
TIA~
You have to be sure that the impedence will match up correctly. Any idea what the impedence of each coil is at 80Hz? If you can get that and match it up with something from them, it is worth a try.
I did this once but ended up getting a real subwoofer amplifier with an active crossover in it.
I do not know the subwoofer you speak of. What is powering the first voice coil of the sub? Looks like you are trying to imitate the subwoofer amplifier you mentioned with your receiver?
Bill
You need a huge inductor and possibly a big cap if you want to filter at 12db vs 6db.
I suggest against this though.
The big fat inductor is going to kill your bass resolution. If you use an iron core, it will also intruduce distortion into the mix.
Is there any way you can filter before the amplifier? I remember that a quick and dirty way is with an FMOD passive filter before amplification. Still not the best but better.
Just to be sure, you just want 80Hz and lower to get to these speakers, right?
Is this a subwoofer? If so, just get an actual subwoofer amplifier. You can get one from PartsExpress or maybe Madisound that will have an internal electronic crossover, level control, etc. Much better solution.
Bill
...but its single-order slope would allow the speaker to produce substantial energy in the upper-bass and lower-midrange octaves.A 2nd-order slope as mspeed discussed would have less output above 80Hz, but the cap would have to be a 'lytic to be affordable.
What's your speaker's impedance around 80Hz and above for a couple octaves?
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