Anybody know how to take a stereo line level signal, duplicate it, mono sum one of the pair and feed it through a crossover, cutting all frequencies above 215Hz, and leaving all the low end below 215Hz to come out that mono RCA, into a subwoofer plate amp RCA line level input?
I like the ease of hooking up a sub with the single RCA. It's easy. I always can get a proper length. I don't feel bad about messing up an RCA cable, as I can just unspool more cable and make another one.
I do not know what voodoo goes on inside an otherwise straightforward amplifier that allows it to have a single mono line out that has already eliminated any non-subwoofer worthy frequencies and is delivering a clean, balanced subwoofer line level signal.
Obviously, a crossover has been emplyed somewhere. Is this where I dip into powered crossovers? I am totally in the dark as to how one would take a stereo line level signal ... and maybe..... double (?) the signal into two paths, a stereo pair to continue to the stereo amplifier, and a stereo pair that needs to turn into a mono signal, then run through a crossover(?) and back out the enclosure via an RCA jack meant for a subwoofer RCA input.
That is how it works in my very uninformed head. The signal path anyway. What the hell I am supposed to do in order to make all that work correctly ......????? pfffft.
Maybe I should start with numbers? I know that I am feeding a small sub at either 8" or 10" and 300watts is the RMS, but it will never get cranked. The plate amp I am going to use at this time is that Yung SD300-6 that was for sale here pretty cheap forever. It's nothing special. I would want this RCA subwoofer signal to have already cut anything above 215Hz.
Anybody know how to take a stereo line level signal, duplicate it, mono sum one of the pair and feed it through a crossover, cutting all frequencies above 215Hz, and leaving all the low end below 215Hz to come out that mono RCA, into a subwoofer plate amp RCA line level input?
Some stuff I know may make more sense to someone else, but things that will not help me are telling me this is a...
Fools errand? That I should just buy a product? Just get a receiver / home theater piece of gear with an RCA subwoofer out? Just use the speaker wire level input / output? (I hate that) Do something else?
This is part of a larger project that will distract if I drag out all those details here. Long story short, I am using multiple amplifiers to better partner with the speaker cabinets I have made and am making for a surround system. It is very unique, very cool, very loud, very clean, and very much free of distortion, and very much full of rib shaking from kick drums and face melting guitar solos.
So just looking for a solution to this - I figure if anyone has done this DIY subwoofer amp mono RCA input stuff, they are here and can tell me about it. I have done some looking online but I am chasing the wrong rabbits down the wrong holes.
I can read schematics just fine and build them to their plans. I have it in my head that it isn't hard to make a "mono sum" circuit : taking a pair of stereo line level signals, and using resistors to turn those Left and Right signals into a single, mono signal that includes all the sound from both Left and Right at a lower volume. This may be total horseshit that someone told me as the correct way. He for sure used the tiny 1% film resistors in this circuit he made to "mono sum," and it seemed to work. It also seemed like the wrong thing to do to a clean audio signal.
If someone can draw a picture on a napkin and post a pic, I'll try it. I have made a couple circuits I found online, but I have to use some gear I am ok with frying before I go further with that stuff.
Any ideas or help is greatly appreciated
Spaker
I like the ease of hooking up a sub with the single RCA. It's easy. I always can get a proper length. I don't feel bad about messing up an RCA cable, as I can just unspool more cable and make another one.
I do not know what voodoo goes on inside an otherwise straightforward amplifier that allows it to have a single mono line out that has already eliminated any non-subwoofer worthy frequencies and is delivering a clean, balanced subwoofer line level signal.
Obviously, a crossover has been emplyed somewhere. Is this where I dip into powered crossovers? I am totally in the dark as to how one would take a stereo line level signal ... and maybe..... double (?) the signal into two paths, a stereo pair to continue to the stereo amplifier, and a stereo pair that needs to turn into a mono signal, then run through a crossover(?) and back out the enclosure via an RCA jack meant for a subwoofer RCA input.
That is how it works in my very uninformed head. The signal path anyway. What the hell I am supposed to do in order to make all that work correctly ......????? pfffft.
Maybe I should start with numbers? I know that I am feeding a small sub at either 8" or 10" and 300watts is the RMS, but it will never get cranked. The plate amp I am going to use at this time is that Yung SD300-6 that was for sale here pretty cheap forever. It's nothing special. I would want this RCA subwoofer signal to have already cut anything above 215Hz.
Anybody know how to take a stereo line level signal, duplicate it, mono sum one of the pair and feed it through a crossover, cutting all frequencies above 215Hz, and leaving all the low end below 215Hz to come out that mono RCA, into a subwoofer plate amp RCA line level input?
Some stuff I know may make more sense to someone else, but things that will not help me are telling me this is a...
Fools errand? That I should just buy a product? Just get a receiver / home theater piece of gear with an RCA subwoofer out? Just use the speaker wire level input / output? (I hate that) Do something else?
This is part of a larger project that will distract if I drag out all those details here. Long story short, I am using multiple amplifiers to better partner with the speaker cabinets I have made and am making for a surround system. It is very unique, very cool, very loud, very clean, and very much free of distortion, and very much full of rib shaking from kick drums and face melting guitar solos.
So just looking for a solution to this - I figure if anyone has done this DIY subwoofer amp mono RCA input stuff, they are here and can tell me about it. I have done some looking online but I am chasing the wrong rabbits down the wrong holes.
I can read schematics just fine and build them to their plans. I have it in my head that it isn't hard to make a "mono sum" circuit : taking a pair of stereo line level signals, and using resistors to turn those Left and Right signals into a single, mono signal that includes all the sound from both Left and Right at a lower volume. This may be total horseshit that someone told me as the correct way. He for sure used the tiny 1% film resistors in this circuit he made to "mono sum," and it seemed to work. It also seemed like the wrong thing to do to a clean audio signal.
If someone can draw a picture on a napkin and post a pic, I'll try it. I have made a couple circuits I found online, but I have to use some gear I am ok with frying before I go further with that stuff.
Any ideas or help is greatly appreciated
Spaker
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