2ch Setup with Subwoofer?

[boccaccioe]

Hello! I am new to stereos and have some very cheap equipment that I'd like to connect up.

What is the best way to hook a 2 channel amplifier (http://a.co/cR7kgl3) to a set of speakers (http://a.co/bbai7K4) and a passive subwoofer (http://a.co/61PfJNf)?

I found this Dynaco setup (http://dynacotubeaudio.forumotion.com/t1806-dynaco-center-channel#12821) but I'm not sure if this would work or even how to read this diagram.

Any help would be appreciated. Thank you very much.

 

[Bassblaster]

1000W speakers huh. let me give you a much better and cost effective setup idea.

amp/speaker combo
Powered subwoofer
All you have to do is get the amp in the combo a bigger power supply and your set.

 

[boccaccioe]

Hi Bassblaster. Thanks for the response!

I actually already have the stereo receiver and the speakers (linked in my first post, hand-me-downs from a neighbor) and I was looking to buy this cheap $50.00 subwoofer (http://a.co/61PfJNf) but I am confused about how I would wire it up.

Would I need it to have input from both the left and right channels because it only has one input. I assume that I would need some sort of combination between series and parallel like this (http://dynacotubeaudio.forumotion.com/t1806-dynaco-center-channel#12821) but I honestly have no idea how to correctly read that diagram.

Thanks for your help

 

[Bassblaster]

Ohh i see. sorry i misunderstood you. but i dont think the amp you have will power that sub very well. the 3 speaker config in the link you sent will send less power to each speaker as its putting them in series. The amp you have uses a TDA7297 rated for 15Wx2 into 8 Ohm at 16.5V. i own several amps with that same IC (im a huge chip amp fan) and at 12V into 8 ohm you get about 7-8W. What voltage are you running yours at?

 

[boccaccioe]

The power supply is 12 volts 5 amps in that's what you're asking

 

[Bassblaster]

With 12V the most power your going to get from your amp is between 7 and 8 WPC before clipping. not enough to drive that sub. you would be better off finding a used powered sub and run that.

 

[boccaccioe]

Any recommendations for a powered sub close to $50.00? If none exist then what is the least expensive I could go?

Thanks for all the help

 

[Bassblaster]

Not sure about new for about $50 but i did a quick ebay search for "powered subwoofer" and this is what i found. USED Yamaha NS-SW40 for $56

 

[eiraved]

You're probably better off getting a powered sub. Whatever you purchase should have a volume control and speaker in, speaker out jacks. It's difficult to find one at your price point, but here's an inexpensive example.
https://www.amazon.com/Polk-10-Inch...=1513551138&sr=1-8&keywords=powered+subwoofer
And this:
https://www.amazon.com/Acoustic-Aud...=1513551138&sr=1-3&keywords=powered+subwoofer

 

[eiraved]

That Polk is a steal at that price compared to the original price. Plus, Polk is one of the more respected audio brands out there.
Here's a couple more within your price range, as long as the auction doesn't go crazy...
https://www.ebay.com/itm/Polk-PSW11...640437&hash=item3d53257b4e:g:OToAAOSwiBJaKZHH
https://www.ebay.com/itm/Polk-PSW11...640437&hash=item3d53257e16:g:OToAAOSwiBJaKZHH

 

[boccaccioe]

Thanks for all of the help everybody! So I was searching on and off for a while and I finally settled on this one that I found used with a small hole in the front mesh for about $40 (including shipping) on eBay:

https://www.crutchfield.com/S-uQYj7sAQ0k2/p_158SAWM250/Sony-SA-WM250.html#&gid=1&pid=2

What a great purchase!! The listening experience is like night and day!

Anyone have advice for an optimal crossover frequency? I have it set at about 100Hz right now

Again, thanks to everybody for the help

 

[toxcrusadr]

It usually depends on the main speakers, i.e. how low they go before they crap out. The link for yours claims 30 Hz but I don't really believe it - partly because they didn't list a -db parameter for 30 Hz (i.e. is it 3 db or 10 db below the rest of the speaker's output curve at that point). Based on the rest of the specs and claims there is quite a bit of hype there. BUT in any case, 100 Hz sounds like a good spot. If the sub is too boomy or you get too much of the upper bass and can't hear the lowest notes, try it a bit lower. You can experiment with both the sub volume and crossover point and see what sounds best. It usually takes a bit of trial and error to dial it in.