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  Topic Review (Newest First)
12-28-15 11:11 AM
dboff01
Re: Epik 15" DIY Ported Subwoofer

Cutsheet for reference.
10-28-14 05:27 PM
dboff01
Re: Epik 15" DIY Ported Subwoofer

Quote:
HT2013 wrote: View Post
I know it has been a couple of months since the last post here, but I just wanted to say thanks for the thread and for the insights you gave. I'm currently building two 12" ported subs of a similar design as yours, and your thread has been real helpful. Thanks again, and great job on the build. --Mario
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.
10-28-14 11:05 AM
HT2013
Re: Epik 15" DIY Ported Subwoofer

I know it has been a couple of months since the last post here, but I just wanted to say thanks for the thread and for the insights you gave. I'm currently building two 12" ported subs of a similar design as yours, and your thread has been real helpful. Thanks again, and great job on the build. --Mario
08-09-14 09:52 PM
dboff01
Re: Epik 15" DIY Ported Subwoofer

Quote:
Jason Schultz wrote: View Post
Well dboff01, I've saved your build in favourites because as coincidence would have it, I'm planning on building a very similar sub with a Dayton UM 15. I must have missed it but what is the net internal volume of your box and tuning freq. please.?? Mine enclosure will be 174 Litres tuned to 16 Hz.
From the 1st post in the thread, internal volume is 5.1 cf (144 litres) tuned to 20 Hz.
08-09-14 07:58 PM
Jason Schultz
Re: Epik 15" DIY Ported Subwoofer

Well dboff01, I've saved your build in favourites because as coincidence would have it, I'm planning on building a very similar sub with a Dayton UM 15. I must have missed it but what is the net internal volume of your box and tuning freq. please.?? Mine enclosure will be 174 Litres tuned to 16 Hz.
08-06-14 06:04 PM
dboff01
Re: Epik 15" DIY Ported Subwoofer

Quote:
randyc1 wrote: View Post
Very nice Build !!

I just have one question, could you have used the hole width of the box for the port ? Like some of the Martysubs over at AVS ??

thanks.
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 walls of the box, the port length would need to increase to maintain the same tuning due to the increased volume. That may have then caused the port to mechanically crash into the plate amp and the box design wouldn't work. Alternatively, if I reduced the length to still fit within the box, the tuning would change. Decreasing the height of the port to maintain the same volume/length/tuning, the surface area of the port increases which could negatively affect potential chuffing.

In other words, all the variables of external box dimensions, internal volume, max port velocity, tuning frequency, and cosmetics must all be considered to provide a design that works and meets your requirements.

Simple, right?

I played with WinISD alot to determine the effect port dimensions, internal volume, and power have on response, port velocity, and excursion. I then used Sketchup to see what was mechanically practical and still meet my WAF requirements.
08-06-14 05:22 PM
randyc1
Re: Epik 15" DIY Ported Subwoofer

Very nice Build !!

I just have one question, could you have used the hole width of the box for the port ? Like some of the Martysubs over at AVS ??

thanks.
07-21-14 11:37 AM
dboff01
Re: Epik 15" DIY Ported Subwoofer

Quote:
sicride wrote: View Post
Yep, me too.

I also wanted to say to the original thread starter that is beautiful work. Must feel good to be finishing such a long project.
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 renovation that is keeping me busy these days.
07-21-14 05:29 AM
sicride
Re: Epik 15" DIY Ported Subwoofer

Yep, me too.

I also wanted to say to the original thread starter that is beautiful work. Must feel good to be finishing such a long project.
07-20-14 11:21 PM
zapped
Re: Epik 15" DIY Ported Subwoofer

Quote:
sicride wrote: View Post
that's where the amp goes
Oh I see! I thought the amp has a separate deck.. thanks for informing me.. as a newbie, still have a lot to learn about these things!
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