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Forum: Ported Subwoofer Build Projects   12-28-15, 11:11 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Cutsheet for reference.
Forum: Ported Subwoofer Build Projects   10-28-14, 05:27 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

No problem, it was a fun project and I'm glad I could share.

If not for the excellent threads here that proceeded my build, I never would've been able to do something like this.
Forum: Ported Subwoofer Build Projects   08-09-14, 09:52 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

From the 1st post in the thread, internal volume is 5.1 cf (144 litres) tuned to 20 Hz.
Forum: Ported Subwoofer Build Projects   08-06-14, 06:04 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Sure, but realize that the port dimensions directly affect the tuning of the box as well as the maximum port velocity.

For instance, if I left the 2.5" port height the same but widened to the...
Forum: Ported Subwoofer Build Projects   07-21-14, 11:37 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Thanks. Yes, always good to get a project behind you, especially one so long in the making.

I enjoyed the sub project but don't know that I'll need to do it again. I've moved on to a kitchen...
Forum: Ported Subwoofer Build Projects   03-23-14, 11:09 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

I picked up a MiniDSP 2x4 Box (w/2 Way Advanced 21 plug-in) as well as a Behringer UCA222 usb sound card (to provide line in/out in support of REW) for my laptop.

In conjunction with a Radio Shack...
Forum: Ported Subwoofer Build Projects   03-12-14, 08:00 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Added grill mounting hardware and attached grill assembly tonight.

Now to start playing with REW and add subwoofer EQ capability (likely MiniDSP) as I performed a frequency sweep with the new amp...
Forum: Ported Subwoofer Build Projects   03-10-14, 12:01 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Local paneling/ceilings/floors store in my area.

http://www.lipanel.com/

But I think it is pretty similar to the paper-backed stuff you can get from parts-express.
Forum: Ported Subwoofer Build Projects   03-10-14, 11:09 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Barely.

It is certainly a bit darker than the wife and I expected. Likely a by-product of using gel stain which is a bit of a hybrid product somewhere between paint and stain.

Early feedback...
Forum: Ported Subwoofer Build Projects   03-09-14, 09:42 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Stain and clearcoat are finished. Amp and driver installed.

Quick test shows it is functional with new BASH500 amp. I did notice a thump from the subwoofer when the amp auto shutdown switched...
Forum: Ported Subwoofer Build Projects   03-03-14, 07:51 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Not finished yet but in the process of the final topcoats. Wife and I decided on a dark espresso stain.

Here are a couple of pics after 4 coats of General Finishes Java Gel Stain and 4 coats of...
Forum: Ported Subwoofer Build Projects   02-16-14, 06:03 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Attached the front face veneer today. Happy to say I didn't ruin the sub during veneer installation process.

Ordered General Finishes Stain and Urethane from Rockler, hopefully here by next...
Forum: Ported Subwoofer Build Projects   02-10-14, 10:12 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Second side attached and trimmed. One step closer.

46571

46572
Forum: Ported Subwoofer Build Projects   02-09-14, 07:07 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Added one side today and flush trimmed both top and side. Tried flush trim router bit to remove excess material and didn't like results, left a more jagged edge than I'd expected. Achieved better...
Forum: Ported Subwoofer Build Projects   02-08-14, 07:24 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

I modified the BASH amp HPF/Boost resistors last weekend as planned.

Got a late start today so only managed to cut the 4 veneer panels to size (top, sides, face) and attach the top via contact...
Forum: Ported Subwoofer Build Projects   02-01-14, 07:13 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Here's a SPL comparo to show impact of sealed -> ported enclosure impact as well as BASH 500 upgrade.

Yellow = Epik Valor (Sealed)
Red = DIY Ported Enclosure with Epik 300W
Magenta = DIY Ported...
Forum: Ported Subwoofer Build Projects   02-01-14, 06:49 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

I'm actually planning and modeled the 19.1 Hz HPF with 4dB Bass boost from the BASH boost tables.

The original 300W amp from Epik had a similar 20 Hz HPF with 5dB boost.
Forum: Ported Subwoofer Build Projects   01-31-14, 10:17 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Well over a year later and a 2nd child added to the household, I have some progress to report on the finishing of this project.

I created the grill from MDF and Parts-Express black speaker cloth. ...
Forum: Ported Subwoofer Build Projects   10-22-12, 06:37 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Unfortunately, my busy life hasn't allowed me to finish the veneer/grill.

The wife is starting to get cranky with the unfinished state and is turning up the pressure to complete, so maybe soon.
Forum: Ported Subwoofer Build Projects   07-10-12, 08:45 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Performed some more spirited listening sessions, including Master and Commander First Battle scene and War of the Worlds Pods Emerging scene. :hsd:

To my ears, output is significantly improved...
Forum: Ported Subwoofer Build Projects   07-08-12, 08:18 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Finally got a chance to fire it up tonight. First impressions are good, however my 3 yr old was already asleep by the time I turned it on, so I couldn't really push it. I listened to Nemo's Darla...
Forum: Ported Subwoofer Build Projects   07-07-12, 07:25 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

A few more hours of work on the subwoofer today. Box assembly is basically complete, top has been added, 1/4 round added to front face, front port has been flared, screw holes filled twice with wood...
Forum: Ported Subwoofer Build Projects   06-29-12, 09:22 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Decided to put a little thought tonight into the grill design as I hadn't really considered it yet. Compared a round driver cover vs rectangular, modeled both in Sketchup, and both the wife and I...
Forum: Ported Subwoofer Build Projects   06-24-12, 09:05 AM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Fortunately, I have off for a week starting next weekend, so the fun will have to wait till then. :)
Forum: Ported Subwoofer Build Projects   06-23-12, 08:04 PM
Replies: 54
Views: 63,004
Posted By dboff01
Re: Epik 15" DIY Ported Subwoofer

Here are some new pics of today's progress ...

Quarter-round added to port opening ...
36803

Internal bracing assembled and installed ...
36804

Installation of front baffle ...
36805
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