[Mike P.]

What will you use the sub for, strictly music, home theater, or both?

 

[Mike P.]

The Dayton RSS390HO-4 $150.80 with free shipping:

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-469

And the Bash 300 plate amp, $149.87 with free shipping:

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-750

Slightly over your budget, but well worth it for what you get.

 

[Mike P.]

The RSS390HO would have a 4 db advantage over the Shiva-X from 30 hz on down.

 

[Mike P.]

Ok sounds great, so did you configure those settings with a 5.6 net cubic foot cabinet?

Yes. 5.6 net cu.ft would have a Q of .706, 4.7 cu.ft would have a Q of .743, not much difference.

25"w x 30"h x 18"d external measurements would have an internal volume of 6.34 cu.ft., which would be about 6 cu.ft. net. Here is an enclosure calculator to help you figure out the dimensions for the size that you want.

http://www.hometheatershack.com/forums/enclosure-volume-calculator/

 

[Mike P.]

I thought you were going with 4.7 cu. ft. That is the reason I mentioned using the calculator as a 6.3 cu. ft. box would have been to big.

Here's the file for the Dayton.

View attachment Dayton RSS390HF-4 .wdr

 

[Mike P.]

2. 300 watts input power, then you add a 2nd order HPF at 17.7 hz. Next add a Parametric EQ with the center frequency at 27.5 hz, a Gain of 1 db and a Q of 1.0.

Window pane bracing is popular, side to side and front to back. The front to back piece would have a cutout for the depth of the sub.

 

[Mike P.]

To apply a HPF and also the boost that the Bash 300 amp has, click on the EQ/Filter tab. Click on Add and select Highpass. Enter the numbers as stated in post #14. Click on Add again and the filter will be applied. Click on Add and select Parameteric EQ. Enter the numbers and click on Add. The EQ is now applied. Thereis a tutorial on WinISD here:

http://www.hometheatershack.com/for...wnload-detailed-guide-how-use-winisd-pro.html

Depending on how much room gain you get with the Dayton, it should outperform the SVS.

 

[Mike P.]

The sub would benefit from a bigger box if going ported.

 

[Mike P.]

9 cu.ft. tuned to 18 hz would give excellent low end extension.

 

[Mike P.]

What would you use for a 5" diameter port?

The modeling shows a 7 db advantage at 20 hz with the ported box. That's a big gain in the low end compared to the sealed using the same Bash 300 amp.

 

[Mike P.]

You got it! :T

 

[Mike P.]

Shouldn't be a problem as long as nothing gets dropped in the port.

 

[Mike P.]

There won't be any port related noises with this setup with an air speed that's maximum 16 m/s at 18 hz. As mentioned above, a grill over the port would be a good idea.

 

[Mike P.]

Looks good, you're done. Looking forward to your build thread!

 

[Mike P.]

Yes.

 

[Mike P.]

1. A couple inches thick glued to the walls of the enclosure. Another option would be egg crate foam sold as a mattress pad at WalMart for $15-$20. Much easier to work with.

2. I've always used a glue gun with hot glue to glue egg crate foam. Others have used 3M spray on adhesive. Make sure you reads the label on proper use, you have to spray both the cabinet wall and the insulation.

3. Wood glue and screws can be used. For screws use 15 inch long coarse thread drywall screws. You have to drill a pilot hole and countersink first so the MDF doesn't split. Do some test holes on a couple pieces of scrap MDF first until you get it right. The pilot hole needs to be a hair smaller then the shank of the screw.

 

[Mike P.]

There's a need for screws if you don't have clamps, I assumed that was the case.