Rythmik F25 - to Buy or to Build - AVS Forum
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Old 07-27-2013, 03:17 PM - Thread Starter
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So here are my options.

Buy the F25 at 1400 + 180 shipping = 1580

Buy the two DS1501 drivers and 2x400 amp from Rythmik for 974 + 81 = 1055

Buy two DS1510 (FV15HP) drivers and two of their 600 amps for 1384 + 114 = 1498

Or any other suggestions?
And any enclosure suggestions you may have. It is going to be sealed regardless of which path I go.

Now, I would love to have a dozen subs but of course I am only allowed one. Maybe in a year I can sneak in another one but at the moment it's a big no. Although it can be fairly large, preferably stacking up like the F25.

The room is about 3600 ft^3 and is the corner of an L and open almost entirely on both sides to one room of similar size and a slightly larger kitchen on the other.


Thanks in advance!
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Old 07-27-2013, 03:30 PM
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I'm not a believer in the benefits of servo. Rythmik products are very nice when compared against other commercial subs, but from a DIY standpoint It's over priced.

Stack and glue two of these together

http://www.parts-express.com/pe/showdetl.cfm?partnumber=300-7097
(you could also build your own box)
http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-514

Build a false bottom into the enclosure, and slide one of these in for an amp

http://www.parts-express.com/pe/showdetl.cfm?partnumber=248-6706

That's a true 650 watts x 2 RMS, and full DSP PEQ control.
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Old 07-27-2013, 09:56 PM
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I AM a believer in the benefits of servo. I have been through every kind of sub driver, and still the best sound comes from my Rythmiks. It is also the most carefree. Build your enclosure, set up your amp, and it will just keep delivering with no tweaking required. I have four in my theater now. It may cost a bit more, but in my room it was the easiest, safest route to a flat response to 10Hz.
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Old 07-27-2013, 10:06 PM
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im another that that thinks servo is NOT a deciding factor. i have owned many subs as well, including two Rythmiks. a F12 and a FV15HP. they sound great. dont get me wrong. its just that you can build a sub that sounds just as good without servo. honestly, my SVS PB13 Ultra had a sound that i preferred over the Rythmiks, but my quad DIY SI18's put all the ID subs ive had to shame for near the same price.

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Old 07-27-2013, 11:09 PM
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i've read many of brian's posts on the benefits
of servo technology and he makes a compelling case.
the problem is that i haven't been able to find
the benefit in any measurement. so, fwiw, i'd
say focus on other aspects of the design and don't
get too hung up on servo/non-servo.

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Old 07-28-2013, 08:00 AM
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I would go for quad Dayton Ho18's or two duel opposed HO18's over those Rythemics.
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Old 07-29-2013, 08:24 AM
 
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agree go with some 18" daytons and a pro amp and minidsp.
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Old 07-30-2013, 08:02 PM - Thread Starter
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Looks like I opened a can of worms! Two opposed 18" or two 18" stacked?

Of course I can do two stacked with two opposed as well!


Quote:
Originally Posted by Jay1 View Post

I'm not a believer in the benefits of servo. Rythmik products are very nice when compared against other commercial subs, but from a DIY standpoint It's over priced.

Stack and glue two of these together

http://www.parts-express.com/pe/showdetl.cfm?partnumber=300-7097
(you could also build your own box)
http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-514

Build a false bottom into the enclosure, and slide one of these in for an amp

http://www.parts-express.com/pe/showdetl.cfm?partnumber=248-6706

That's a true 650 watts x 2 RMS, and full DSP PEQ control.

For a just a bit more money I can go with 18HO.

I have nothing against building an enclosure. The reason I started looking at DIY was so I can build and finish it how I want. But for how cheap the flat packs are, is it even worth it?
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Old 07-30-2013, 08:14 PM
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Quote:
Originally Posted by Awenta View Post

Looks like I opened a can of worms! Two opposed 18" or two 18" stacked?

Of course I can do two stacked with two opposed as well!
For a just a bit more money I can go with 18HO.

I have nothing against building an enclosure. The reason I started looking at DIY was so I can build and finish it how I want. But for how cheap the flat packs are, is it even worth it?

Those boxes are a really good deal, and very solid... If you can get a box from a 4 x 8 sheet of wood, then you can save a little money, but is it worth it? It's also going to depend on if you want something sized differently then what you can get from the flat packs.
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Old 08-02-2013, 10:10 PM - Thread Starter
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I think for now I will do the two 18 dayton HO. Later I can either build another matching sub or a new enclosure and do a quad (2 stacked and opposed). For now which is better? Stacked or opposed? Im leaning towards stacked for the foot print.

I was thinking if I don't buy the flat pack to build an enclosure with internal dimensions of 16 deep x 20 wide x 40 high. About 7.4ft^3. Will that work?
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Old 08-03-2013, 11:09 PM
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Old 08-03-2013, 11:10 PM
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stacked or dual opposed is fine. there are minor points to argue for either. 7.4 cubic feet for a pair is good.

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