The first one. I want to derive a rear fill channel, what Diamond Audio calls "RAF"rear audio fill using proprietary resistors and whatever else.
My amp for the highs is two-channel only, rated at 175 x 2 @ 4 ohms.
SO I guess I need to acquire the schematic for the passive x-over. But I need to know what to add and where so the final project does not lower the overall resistance too much.
My amp for the highs is two-channel only, rated at 175 x 2 @ 4 ohms.
SO I guess I need to acquire the schematic for the passive x-over. But I need to know what to add and where so the final project does not lower the overall resistance too much.
I'm not sure of the propriety part but for rear fill I'm assuming you want the lowish freqencies passed to the rear channels. A low pass passive crossover would be a inductor in series with speaker 6db/oct
for 12db/oct thats series inductor then parralel cap.
18db/oct adds another inductor in series with the speaker.
since rear fill normally has less power then the fronts you would use a series resistance which would change the inductor/cap values. There are calculators online for the values.
as for finding info about your crossovers, sometimes its included but if not: Inductors arent usually marked but caps are. and from an 'online crossover calculator' you should be able to figure it out.
for 12db/oct thats series inductor then parralel cap.
18db/oct adds another inductor in series with the speaker.
since rear fill normally has less power then the fronts you would use a series resistance which would change the inductor/cap values. There are calculators online for the values.
as for finding info about your crossovers, sometimes its included but if not: Inductors arent usually marked but caps are. and from an 'online crossover calculator' you should be able to figure it out.
Thanks. I will search for the schematics or even try to read them from the crossevers themselves.
Maybe it would be better to just buy the Diamond Audio speakers are sell the MB Quarts.
http://www.diamondaudio.com/support/index.cfm?page=faq&id=184
Maybe it would be better to just buy the Diamond Audio speakers are sell the MB Quarts.
http://www.diamondaudio.com/support/index.cfm?page=faq&id=184
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