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post #1 of 10 Old 01-17-2020, 08:14 PM - Thread Starter
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Cheap DIY Sub

Ok, so I have a Yamaha 5.1 system that’s about 7-8 years old. I spent about $500 on it so it’s nothing special, but does the job for normal tv watching 99% of the time. However, we bought a house with a 20x20 living room and the subwoofer SUCKS. I’m looking to replace it with something better but obviously nothing so crazy that it doesn’t work with the current surround system. I was considering one of the SVS or Polk subs but got to thinking maybe it made sense to build something instead.

What do you guys recommend? Looking to spend roughly $200-$300. Woodworking piece of building something from scratch is no issue.

Thanks!
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post #2 of 10 Old 01-17-2020, 08:24 PM
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VBSS with PA460 or a couple JBL CS1200/GX1200 etc. in a large ported box. Either with a cheap plate amp.
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post #3 of 10 Old 01-17-2020, 10:18 PM
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x2 on the VBSS
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post #4 of 10 Old 01-18-2020, 06:05 AM - Thread Starter
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Thanks! Can you recommend an appropriate plate amp?
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post #5 of 10 Old 01-18-2020, 03:40 PM
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4x JBL CS1200s, 2x dual car audio enclosures, and hopefully find a used NU1000DSP... the latter of which would be the hardest part. 2x CS1200s, 1x dual car audio enclosure, and a used NU1000DSP is probably more feasible in the budget but would give you the option to add the other 2 drivers and enclosure on down the road too.

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post #6 of 10 Old 01-18-2020, 05:53 PM
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Are you hoping to get the subwoofer and amp within the $200-$300 budget?
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post #7 of 10 Old 01-19-2020, 09:28 AM - Thread Starter
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Could go over if I have to but just looking for a good plate amp for that build that makes sense.
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post #8 of 10 Old 01-19-2020, 11:52 AM
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Keep an eye out for PartsExpress deals. The PA460 in a VBSS will prob play louder per (cheap) watt. PE had some cheap HSU plate amps a while back, $100 for 250 watts.

The JBL's in cheap car audio enclosures (read that small sealed boxes) are awesome in large quantity, but you absolutely NEED strong DSP to make them sound reasonable. They peak at about 60hz and fall off hard after that. We do great things through large quantities and boosting the snot out of them. The advantage is when you get them for $30 each so you use a slew of them. In a large ported box they won't need the dsp help just to dig deep. This is a separate issue from using DSP for room correction (always recommended).

Between the two of them if you can stand the larger size I'd probably push you the VBSS route.

If you had a minidsp or already had a spare inuke with DSP I'd recommend differently.

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post #9 of 10 Old 01-19-2020, 12:32 PM
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The main issue I'm seeing is, you can build a VBSS ~$150 and have $150 to put towards a plate amp. However, the PA460 is 8ohms. So with a single VBSS, you'll only be presenting an 8ohm load to the plate amp, so you won't get as much power/volume from the VBSS as if you had a pair of them.


You can definitely do a pair of VBSS for under $300. You'll need a little more money for an amp at that point though.
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post #10 of 10 Old 01-19-2020, 01:36 PM
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Easy to build one now and plan on another one right about after you finish the first one. Two of those will sound great for the $! As for 8/4 ohms, remember 2x power is only 3dB all else equal. Going from one 8 ohm driver to two drivers at 4 ohms total load will give you a 6dB jump which is nice. It'll just give you more incentive to get another one!

Last edited by Chris Popovich; 01-19-2020 at 01:43 PM.
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