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Discussion Starter #1
Hi Guys,

I'm new to this forum, and HT but not new to audio. I have a few quick questions regarding a DIY Subwoofer Setup, Selecting gear and such.

Currently my home theater consists of a low end Sony Receiver... Soon to be replaced by an Onkyo 806 or Yamaha RX-V1800. Polk RTi8's and RTi4's for surrounds and I'm looking to upgrade my sub from the tiny 8" Sony that came with my receiver.

My question is mainly regarding an amplifier and setup instructions. I have searched and I'm looking into 2 separate styles of amplifiers... I was looking at the Elemental Designs LT1300, O audio 500w as well as a Crest FA901 and Berhinger EP2500/1500.

I'm not sure what subwoofer I will run, I have a few laying around from previous car audio installs. Elemental 16ov2, 4x EQHS12's 2 Adire Brahma 12's and a couple others.

If i was to go with the Berhinger or the Crest FA901 what would i require to hook the amp up to the subwoofer output on the Sony receiver. Would i need to run a BFD? Or would a direct connection suffice?

Any suggestions would be appreciated.

Thanks,
Steve
 

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Welcome to the Shack!

To connect the receiver to the EP 2500 you'll need a RCA to 1/4" phone plug cable. To know if you might need a BFD, I suggest you use this program if you have a "shoe-boxed" room. Otherwise, you'll want to use REW.

Hope this helps.
 

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I have corrected the link, it should work now :)
 
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Discussion Starter #6
I'd like to use the brahma's, but it appears one is blown, and the other is a dual 1ohm driver so i don't think i'll be able to use the brahma's.

Does anyone have any opinions of the Gem Sound EXA-3955 amplifier? They claim it does 700w x2 @ 4 ohms However i'd be happy if it did 400-500. Can someone give me their opinions of this amp? as it seems to be my cheapest option. Since I'm in Canada, shipping on most behringer 1500s is over 100. and i've found a Canadian distributor for GEM Sound

I think i'll go with the 16ov2's in a Sonotube application as I'm trying to keep this project as cheap as possible.

Is there anyone on this site who could design me a sonotube enclosure for the 16ov2's i can pay through paypal for a design.

Thanks
 

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There is a build here with the 16ov2 in a HT application:

http://www.hometheatershack.com/forums/diy-subwoofers-sealed-ported/14502-my-2nd-build.html

If that size is acceptable we can easily figure out the sonotube dimensions. Which 16ov2 do you have, the D4 or the D2?

Since I'm in Canada, shipping on most behringer 1500s is over 100....
Remember that bringing electronics in from the U.S. usually means no warranty. Try axemusic.com for Behringer products in Canada. Personally I've never heard of "Gem Sound."
 
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They are the Dual 2 ohm models.... It looks like i'll be passing on the Gem sound amps, I finally found a review and it doesn't look good. Apparently lots of clipping and very overrated power figures.


That size is totally fine, i've been doing some reading and i've seen sonosubs 8 or 9 feet tall...
 

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Here are the dimensions required for a 20", 22" and 24" diameter sonotube. Note the port is a 8 inch diameter sonotube. Disregard the driver specs in the bottom right hand side, that was a sub in the database that came with the program.

For a 20 inch diameter tube:
20 Inch Tube.JPG

For a 22 inch diameter tube:
22 Inch Tube.JPG

For a 24 inch diameter tube:
24 Inch Tube.JPG


Your Choice! :T
 
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