Exodus Audio

**Navydoc** · **05-25-09, 06:16 PM**

Finally finished construction of my 24" sealed subwoofer (NEOdan's cutsheet). Since the MAL-X will not be available for a few more weeks, there is no rush to complete the build so I added extra side panel bracing (primarily as an alignment aid). No screws were used on the external surfaces of the box.

**Navydoc** · **05-25-09, 06:33 PM**

Now that the subwoofer box has been built the hard (i.e. not fun) part begins - sanding and staining. Box was constructed with birch plywood (3/4") and I will add oak trim pieces (3/4" x 2 1/2" x X) to mimic a mission style build. My plan is to stain the birch and the oak trim, if they do not match will have to add veneer (red oak). Unfortunately a screw head from my Jasper Jig / router gouged the surface of the outer trim piece, so I had to use the back side (did not happen on the other two panels). The Jasper Jig did not go out to 18 1/2" with a 1/4" cutting bit, so I drilled a hole in the jig where one for 18 1/2" would have been. I sealed all inner edges with silicon caulk and used a ton of Titebond original glue.

I added egg crate foam to the front half of the box to reduce internal reflections (seems to have worked as the box is clearly less boomey when I stuck my head in the box and made noises. I am concerned about pieces coming loose and getting in the driver. Thinking about removing and replacing with two Wal Mart pillows so I don't worry.

**Mike P.** · **05-25-09, 08:09 PM**

Looking forward to the finished product. What will you power the Maelstom-X with?

**Navydoc** · **05-26-09, 03:44 PM**

I was thinking about the Crest Audio CC-2800, but have recently found some really good deals on the Crown XLS-802D (especially w/ the $100 rebate from Crown). This series is not rated bridged at 4 ohms, but according to a Crown engineer on the Crown forum:

"Crown doesn’t publish a spec for the XLSseries in Bridge-Mono because of regulatory reasons.
In the case of the XLS they will drive a 4-ohm Bridge-Mono/2-ohm stereo load but the XLS802 could under some peak conditions exceed 15-amps on 120v AC lines under testing performed by the independent testing labs. If the amp was being run hard with a 4-ohm BM load it could just exceed 15 amps of current draw, at full output, and would require it to have a 20 amp cord and plug.

It was a decided to drop the 4-Ohms Bridge-Mono/2-Ohms Stereo for all 120v units and keep the 15 amp rating for the XLS product line in the US. This way the whole line is consistent in their AC requirement scheme."

Based a web search the unit should put 2,100 watts into 4 ohms (bridged). For my needs this should be enough power.

**Ricci** · **05-26-09, 04:46 PM**

Hey did you get the XLS-802D already?

**Navydoc** · **05-26-09, 05:39 PM**

Not yet, the rebate runs until the end of June. Is there a better option at less than $350?

**tcarcio** · **05-26-09, 07:33 PM**

The Behringer EP-2500 is the choice of many here on the forum for their subs. It works great and has plenty of power. Check it out here...http://www.google.com/aclk?sa=l&ai=CKSXC5YccSobzLIartgeqkpm0D-3S94gBt_fllg3-hLqBEwgAEAIgtlQoA1D6hrnNB2DJloSJhKTsD6ABu6up7wPIAQGqBBxP0CYxPe5_Wo_cRBnjuu6 GdbYSQ3VvP5M_dqNJ&sig=AGiWqtxwsWNx3DGIL-4eTMOtPJFyDIn0AQ&q=http://www.bhphotovideo.com/bnh/controller/home%3FO%3D%26A%3Ddetails%26Q%3D%26sku%3D280617%26is%3DREG%26BI%3D2110%26kw %3D%5BEP%25202500%5D%26kwid%3DLive%2520Sound%2520SKU%25201to1%2520.BEEP2500 _EP%25202500

**Ricci** · **05-27-09, 10:05 AM**

I'd pick the EP2500 over the 802D. If that's the budget it's hard to go wrong with the EP2500/4000 short of finding a killer deal on something else somewhere.

**Navydoc** · **05-27-09, 05:16 PM**

Ricci,

I really want to get a Crest CC-2800 or CC-4000, but the cost is a bit high. I should probably go with the EP2500 since it is available for less than $300. The XLS802 seemed like a good compromise since the quality should have been a bit higher than the EP2500 but not as good as the Crest products (or so I thought). The CC-1800 can be found on-line for less than $500, but doesn't have the power of the EP2500. Looks wise I MUCH prefer the Crest line.

I know there are a lot of fans of the EP2500 on the boards, but many others are not (probably that way with every single product if one were to look).

I am also leaning towards the ED eQ.2 for its two bands pf parametric equalization. For the price of a SMS-1 I could almost add a second MAL-X sub/EP2500. I will have to use my test tones and Radio Shack SPL meter.

Decisions, decisions, decisions!

Thanks to all for feedback and advice.

**Navydoc** · **05-27-09, 08:39 PM**

Quote:

Navydoc wrote:

I added egg crate foam to the front half of the box to reduce internal reflections (seems to have worked as the box is clearly less boomey when I stuck my head in the box and made noises. I am concerned about pieces coming loose and getting in the driver. Thinking about removing and replacing with two Wal Mart pillows so I don't worry.

Any thoughts on going with the egg crate foam?

I pieced foam to cover the entire front half of the enclosure (including the back of the front panel). I have spray adhesive to glue the foam to the box, yet I am concerned about a piece, or pieces, coming loose and creating problems.

After all the bracing I added to the enclosure I have calculated its interior volume as 5.8 cu ft.

Thanks again for all the assistance.

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