DIY Audio Projects Forum

Wiring a single subwoofer into system...
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Author:  kyle321 [ 09 May 2017, 10:32 ]
Post subject:  Wiring a single subwoofer into system...

I currently have a bookshelf-type speaker system setup.
A simple diagram of what it basically consists of is shown in the attached image.


-Amp board: Sure Electronics AA-AB32155 2x15W at 4 Ohm TA2024 Class-D Audio Amplifier.
-Full range speakers: Dayton Audio ND90-8 3-1/2" Aluminum Cone Full-Range Driver 8 Ohm. Frequency Response: 80 to 15,000 Hz
-Tweeters: Goldwood GT-510 1" Soft Dome Tweeter. Frequency Response: 3,000 to 20,000 Hz. Capacitor: Dayton Audio PMPC-4.7 4.7uF 250V

It sounds pretty decent overall, but is missing a little on the lows.
So, I'm considering adding a single mono-woofer.

I am thinking that I would like for the woofer to have its own volume pot. This way, the bass can be controlled. I'm assuming in this case, it would need its own amp.
What would be the best way to do this? ... Could you simply split the audio (L & R) wires with a Y-connection straight from the main volume pot?
Then, one direction could go to the existing amp and speakers, and the other direction would go to an added volume pot which would go to the sub-amp from there.

Does that sound like a good way to do this?

This is a very DIY build, so, i'm not interested in buying expensive large mass-produced components (if you know what I mean)...

Thanks in advance to any guidance!!

Author:  turk 182 [ 19 May 2017, 07:29 ]
Post subject:  Re: Wiring a single subwoofer into system...

so what type of boxes are your speakers in?
reason i'm asking is you say your looking for more low end response and it may be possible to get a better result without having to add a sub.
but if your bent on adding a sub i would research PLLXO so you don't wind up with a mess of overlapping frequency ranges and passive x-overs for low frequencies turn into investments in copper fast.

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