Rhythmic Subs - AVS Forum
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post #1 of 25 Old 03-28-2009, 06:32 AM - Thread Starter
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I'm considering building the Rhythmic sub kit. They have all of the dimensions on their site.

I need a bit more of an actual step-by-step instruction guide. Has anyone built these subs?

http://www.rythmikaudio.com/diy.html
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post #2 of 25 Old 03-28-2009, 07:00 AM
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Bob this GR rhythmic sub might be a good alternitive to accompany those ST's as well.

http://www.audiocircle.com/circles/i...?topic=65525.0
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post #3 of 25 Old 03-28-2009, 08:37 AM
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Bob,

I have built a total of 4 enclosures for Rythmik 15" drivers. All enclosure designs were custom by me. It is only necessary to incorporate the recommended volume and sufficient bracing to duplicate the performance of the box design recommended by Rythmik. My enclosures were both front firing and down firing. I prefer the down firing because I use them in the near field. Currently, I use two 15" Rythmiks and I plan to add one more (mostly since I have one empty enclosure sitting around). If I can help you in any way, just ask.

Paul
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post #4 of 25 Old 03-28-2009, 09:51 AM - Thread Starter
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Wow!!! Such great help guys!

I read through that thread and I have a couple of questions that I would rather post here.

I see 2 different screen names that seem to be the same poster.
"Danny" and "rhythmic"

Is GR Research the same as Rhythmic?

Is that kit the same as the Rhythmic F12?

I'm looking to stay with a 12" for a smaller cabinet. Correct me if I am wrong. Aren't front-firing more "musical" than down-loaded? I thought the floor adding to the sound would make it boomier.


PS. How much does it cost to build a sub like that kit making your own enclosure instead of buying it all pre-cut?

OK I see that Danny is from GR Research and "rhythmic" is Brian from Rhythmic Audio. I guess these guys work their businesses together?

What are OB subs?
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post #5 of 25 Old 03-28-2009, 10:06 AM
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GR Research is Danny's company that designs and sells diy speakers and supplies. He was so impressed with Byrans servo technolgy that he had his own custom drivers built specifically for servo and tuned more toward musical ability made with paper cones instead of metal. He feels they are more musical but still can provide HT duty as well. So its a joint venture using Danny's drivers with Brians servo amp.
You can probably build a cabinet for approx $50 depending on the finish and if you have the tools already. 1 sheet of mdf should suffice.
I must agree the footprint of that 12" is very attractive.
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post #6 of 25 Old 03-28-2009, 10:39 AM - Thread Starter
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Still waiting for my Axiom refund before I order the ST's. Also still looking around to see if there is something else I should be looking into speaker-wise.

I'm really into the idea of a more "musical" and less "boomy" sub. That Axiom sub sounded pretty good but was about $1100. I had been advised that I could probably do better for less but thought I would stay with the same brand and the EP was well reviewed and fairly highly regarded. If it wasn't so much money I might have kept it while sending the rest back. More musical for a sub is always a good idea IMHO>
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post #7 of 25 Old 03-28-2009, 11:43 AM
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Well i would be inclined to go diy since you can get alot more bang for the buck. But i have already made the power tool investment. I dont think you can be dealing with a better id company than what your considering. I must admit those ht2-tl's look pretty amazing.
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post #8 of 25 Old 03-28-2009, 12:24 PM
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I've built two Rythmik 15" subs, sealed down-firing according to the plans on the Rythmik site. I am very satisfied with the subs and the customer service from Brian at Rythmik was excellent.

This was a considerable upgrade from the Paradigm pw-2200 I was using previously. The Rythmik does both music and HT way better than the pw-2200.
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post #9 of 25 Old 03-28-2009, 01:35 PM - Thread Starter
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Did you guys veneer them also? Any pics ?


I think I'd like to build a 12" front-loaded (maybe 2) and the 12" plans are for down-firing.
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post #10 of 25 Old 03-28-2009, 01:52 PM - Thread Starter
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I see that Rhythmic also sells speakers separately. How do they differ from the GR Research speakers (besides being more money than the GR's)?
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post #11 of 25 Old 03-28-2009, 03:04 PM
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The GR subs are 12" (paper cone)and Rymthmic's are 15"(metal cone)and will have more output. Both imploy Brian's servo tech. but I believe Danny's goal was to take the sq even a notch futher.
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post #12 of 25 Old 03-28-2009, 03:37 PM - Thread Starter
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Quote:
Originally Posted by nick53 View Post

The GR subs are 12" (paper cone)and Rymthmic's are 15"(metal cone)and will have more output. Both imploy Brian's servo tech. but I believe Danny's goal was to take the sq even a notch futher.

They both have 12" and 15" speakers.

http://www.rythmikaudio.com/DS1200driver.html
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post #13 of 25 Old 03-28-2009, 03:40 PM
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Quote:
Originally Posted by BoB/335 View Post

They both have 12" and 15" speakers.

http://www.rythmikaudio.com/DS1200driver.html

Well soo they do, i guess the difference is Danny's is spec'ed to his design.
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post #14 of 25 Old 03-28-2009, 05:32 PM
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Rythmik has a duo of high powered class-H servo plate amps on the way, and given how well the 370w units perform, this should mean very good things.

Still my absolute favorite subs for music listening.
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post #15 of 25 Old 03-28-2009, 09:01 PM
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rythmik driver is metallic, and GR driver is paper. I spoke to both of them, and GR driver can be crossed slightly higher than the metallic one, and supposed to be a bit more dynamic. Plus its a bit more cheaper. I'd say, you won't go wrong with either of them, if you plan on getting the STs.
Boy, i wish i could afford salk speakers! The bamboo ones Jim posted on audiocircle were breathtakingly stunning! Am yet to come across a better speaker builder than Jim! I think Jim has built a rythmik sub to go with STs for a customer of his. Ask him, and you might be able to match the sub with the speaker!
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post #16 of 25 Old 03-29-2009, 03:53 AM
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I'm building a dual 12" servo sandbox right now (with a LOT of help from Eric).
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post #17 of 25 Old 03-29-2009, 04:16 AM - Thread Starter
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Originally Posted by mrtwstr View Post

I'm building a dual 12" servo sandbox right now (with a LOT of help from Eric).

I hope you're the type that likes to take a lot of step-by-step pics and then post them with detailed captions.
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post #18 of 25 Old 03-29-2009, 04:20 AM - Thread Starter
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Quote:
Originally Posted by audio_crackpot View Post

Boy, i wish i could afford salk speakers! The bamboo ones Jim posted on audiocircle were breathtakingly stunning! Am yet to come across a better speaker builder than Jim! I think Jim has built a rythmik sub to go with STs for a customer of his. Ask him, and you might be able to match the sub with the speaker!


You know those bamboos were probably $450 more than his standard great veneers. I thought the curly walnut on the Ht2's was just as spectacularfor a lot less. http://www.audiocircle.com/circles/i...?topic=66404.0
Hey, I can't afford the ST's either but I learned a saying and at times I learned it the hard way. "Buy Once / Cry Once"
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post #19 of 25 Old 03-29-2009, 04:58 AM
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The walnut was by far my favorite also and just stunning. In fact thats what I chose for my diy project.

I hope to build a pair of those GR subs to match up to these.

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post #20 of 25 Old 03-29-2009, 06:27 AM - Thread Starter
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Quote:
Originally Posted by nick53 View Post

The walnut was by far my favorite also and just stunning. In fact thats what I chose for my diy project.

I hope to build a pair of those GR subs to match up to these.




nick,

Those are beautiful! Are you a cabinet maker by trade?
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post #21 of 25 Old 03-29-2009, 06:44 AM
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No I have made several sub cabinets before but this was my first floorstander project. This is my first veneer project and quite pleased with results.

Thanks for the compliment.
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post #22 of 25 Old 03-29-2009, 07:32 AM
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Quote:
Originally Posted by BoB/335 View Post

You know those bamboos were probably $450 more than his standard great veneers. I thought the curly walnut on the Ht2's was just as spectacularfor a lot less.

BoB/335 -

The bamboo cabinets are more expensive, but only $200 more than a standard veneer.

- Jim

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Custom-crafted Speakers
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post #23 of 25 Old 03-29-2009, 07:58 AM - Thread Starter
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Quote:
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BoB/335 -

The bamboo cabinets are more expensive, but only $200 more than a standard veneer.

- Jim

Hey Jim,

You sure get around!
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post #24 of 25 Old 03-29-2009, 08:11 AM
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Like Jim said above, bamboo cabinets are just $200 more than the ones made of MDF. Plus bamboo can be stained in any color you want .. so if you like walnut, then use a walnut stain. I'm sure they'll look just as great. Or use caramelized bamboo ply .. they are much darker and have killer looks!

To me apart from the looks, a huge selling point of bamboo is how stiff and inert it is. Though Jim has not taken sides on this, you can read what ascend acoustics had to say about using bamboo to build cabinets. They conducted some tests on cabinets built with bamboo and MDF and found that bamboo was way better. Bamboo is harder than maple and has more tensile strength than steel!

http://forum.ascendacoustics.com/showthread.php?t=2597

Plus bamboo being grass is a lot more environment friendly. If i ever decide to splurge on speakers again, it'll be on a pair of STs in bamboo.
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post #25 of 25 Old 03-29-2009, 01:40 PM
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Quote:
Originally Posted by BoB/335 View Post

I hope you're the type that likes to take a lot of step-by-step pics and then post them with detailed captions.

Heh, honestly Eric (EARGASM) is doing most of the hard work. Basically I am taking this:

http://www.audiocircle.com/circles/i...?topic=53675.0

Doubling it to cover 2 drivers. Final dimensions 17.5 x 31 baffle x 20 deep. 2.25" thick cabinet walls. I will be standing it on end to create a double stack. Amp will be in it's own box in the rack.
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