RAD Sub12 with 350W amp and LT circuit

Brian Bunge · « **on:** 18 Nov 2003, 04:06 pm »

OK, here's the first frontfiring sub that I've done with a 12" driver, 350W amp, and LT circuit. The enclosure is a 15" cube with an internal vertical brace and 1.5" thick baffle. You'll notice in the picture that I still need grill guides in the top two holes but they should be here any day. I just wanted to share pics of the sub at this point in time.

Hank · « **Reply #1 on:** 18 Nov 2003, 04:25 pm »

Brian, is that the result of your pre-built sub thread, or is it a new, lower-cost product idea experiment? I assume the latter because the plate amp looks like a PE - or is it a Rythmic? Anyway, I like the size and it should be an shoe-in for the WAF

Hint: can you add some light to your photos?

Brian Bunge · « **Reply #2 on:** 18 Nov 2003, 04:27 pm »

Hank,

It's a Rythmik amp and is the result of the "prebuilt sub" thread.

george king · « **Reply #3 on:** 18 Nov 2003, 04:53 pm »

Brian,

Sweet, totally !!! (sorry, been watching Nemo with my daughter). So how low does it go?

Brian Bunge · « **Reply #4 on:** 18 Nov 2003, 05:00 pm »

George,

I haven't done any response measurements yet; just subjective listening. The design calls for a natural F3 of 20Hz with a Qtc=.7. It is extremely tight and articulate and seems to have very good extension. I expect to be in the lower 20's without any trouble. I hope to take some readings in the morning before I head to the shop.

Jason1 · « **Reply #5 on:** 18 Nov 2003, 11:00 pm »

What driver are you using, and how much $?

LeonO · « **Reply #6 on:** 18 Nov 2003, 11:49 pm »

SWEEEET!!!

That would look awesome in my room

Brian Bunge · « **Reply #7 on:** 19 Nov 2003, 02:33 am »

Jason,

The driver is also from Rythmik. A sub like this will be $800.

theranman · « **Reply #8 on:** 19 Nov 2003, 08:52 pm »

Brian,

Awesome pics! I'm glad to see you're keeping up the good work. What are the exterior dimensions again?

Ran

Brian Bunge · « **Reply #9 on:** 19 Nov 2003, 09:24 pm »

Thanks, Ran!

The enclosure itself is a 15" cube. The grill will add 3/4" to the overall depth as well as another 1" or so for the amp's heatsinks.

LeonO · « **Reply #10 on:** 19 Nov 2003, 10:16 pm »

Brian, did you have a chance to listen to the sub together with the new Metals?

Brian Bunge · « **Reply #11 on:** 20 Nov 2003, 01:11 am »

Leon,

Yes I did and I'm extremely impressed with the entire setup. Let's hope you are too!