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8" sub kit vs retail

68.231.214.190
Posted on March 2, 2015 at 21:46:13
Lynxo
Audiophile

Posts: 247
Location: CA
Joined: April 16, 2009
 What is better way to go for 8" sub plus maggie pair. small room so dont need bigger subs.

Price wise, both comes out very close, kit costing slightly more with extras needed to finish it.


https://www.parts-express.com/dayton-audio-8-reference-series-ho-subwoofer-and-cabinet-package--300-7090

https://www.parts-express.com/yung-sd300-300w-class-d-subwoofer-plate-amplifier-module-no-boost--301-508

Vs. retail


http://www.amazon.com/NHT-Super-110-Watt-Powered-Subwoofer/dp/B0049FGP7O/ref=sr_1_1?ie=UTF8&qid=1425360734&sr=8-1&keywords=nht+subwoofer

 

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RE: 8" sub kit vs retail, posted on March 3, 2015 at 09:30:38
JBen
Audiophile

Posts: 3082
Location: South FL
Joined: May 18, 2008
Contributor
  Since: July 26, 2010
 The kit may offer you more options & flexibility.

Still, I would consider it better if you can use a 10" box/driver combo with that same plate amp. I am testing woofer stuff -- too early to share usefully -- which tends to confirm the widely-shared impression that 10"/sealed is closest to ideal for music with Maggies. An additional requirement, for best music presentation, has been that the woofer/subwoofer driver is at (or close to) the plane of the Maggies. The latter has been true with all the diameters tested (8/10/12) at home along the years.

Even your smaller room may benefit from a 10" driver (likely better, 2 of them). Whether with planars or with cone speakers, I keep finding small rooms where 10" drivers deliver deep (and still well-textured) bass that an 8" has a harder time reaching down to, more so if sealed.

Hopefully, you can borrow a sub or two and test in your room. I did so for years and it is now, seemingly, paying off. However, I went for woofers, not "subs", and have had to "build them". Work in progress it is but it has already surpassed anything a subwoofer could do for music.

 

RE: 8" sub kit vs retail, posted on March 3, 2015 at 16:30:06
Lynxo
Audiophile

Posts: 247
Location: CA
Joined: April 16, 2009
 Got it. Thank you.

 

+1 sealed enclosure for Maggies. nt, posted on March 3, 2015 at 21:47:14
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 .

 

-1 dipole "enclosure" for Maggies., posted on March 3, 2015 at 23:55:44
MikeCh
Audiophile

Posts: 1113
Joined: November 16, 2002
 Though not in the OP's price range. (Though maybe).

 

+2 :-). Subwoofer thread. We both mean the sub, not the Maggies themselves. , posted on March 4, 2015 at 01:03:36
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 My subject line was misleading.
Sealed subwoofer enclosures sound better than a vented/reflex enclosure when paired with Maggies.

I know you mean a dipole subwoofer "enclosure" would be even better with Maggies. I don't know anything about dipole subwoofers. How do they control the driver? Do cone driver dipoles require drivers optimized for dipole applications?

I've never heard a dipole subwoofer before. To me it seems like a cone driver dipole "enclosure" would have less control over the driver. Magnepan's DWM isn't a subwoofer, but a woofer enhancer. They are planars and should pair well with full range planars.

My sub has two ports and one port plug. There is a switch to optimize for more extension with both ports open or more control with one port open. It definitely sounded better with one port sealed. I called the manufacturer and talked to one of their designers. I explained that I liked the sound with one port sealed better than both ports open and asked him about sealing both ports. He sent me an extra port plug to experiment with. You have to turn the level up a little to compensate for the efficiency loss going from ported to sealed. It made a great improvement. Much tighter, more controlled bass. Much better match for Maggies.

 

RE: +2 :-). Subwoofer thread. We both mean the sub, not the Maggies themselves. , posted on March 4, 2015 at 09:07:26
EmailTim

Your maggies are a dipole. The dipole sub would be an extension of your maggie design. Usually, dipole subs use a 6dB/octave EQ curve to bring up the low end.

Hemholtz has a pair and should chime in.

 

Exactly! That is what I was clarifying (poorly) from my poorly worded subject line previously. nt, posted on March 4, 2015 at 18:05:20
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 .

 

RE: -1 dipole "enclosure" for Maggies., posted on March 6, 2015 at 19:35:38
MikeCh
Audiophile

Posts: 1113
Joined: November 16, 2002

 

RE: +2 :-). Subwoofer thread. We both mean the sub, not the Maggies themselves. , posted on March 8, 2015 at 13:45:30
zulugone
Audiophile

Posts: 98
Location: Seattle, Washington
Joined: August 31, 2013
 I this a picture of the Rythmik CI OB 'kit'? 2 drivers per stereo channel?
Do you have any advice about using the same Rythmik OB with one driver per channel?

 

RE: +2 :-). Subwoofer thread. We both mean the sub, not the Maggies themselves. , posted on March 8, 2015 at 18:50:55
EmailTim

GR Research Drivers and Rythmik servo amp.

They are using 2 or 3 drivers per channel.

I have tried 1 driver per channel and the output IMHO is too low.

The servo amp needs the lower impedance of multiple drivers to generate the higher power and higher output.

GR Research's 16Ohm drivers are really @ 12Ohms, thus you can't run 4 of them per channel with their servo amp. If they were truely 16Ohms, you could run 4 to get 4Ohms and could also get complete mechanical cancellation by running 2 against the other 2 in a W-Frame.

GR Research has a forum on Audio Research that may help you out. They are also selling H-Frame Flat-Packs for 2 and 3 drivers.

HTH

 

RE: +2 :-). Subwoofer thread. We both mean the sub, not the Maggies themselves. , posted on March 9, 2015 at 08:38:45
zulugone
Audiophile

Posts: 98
Location: Seattle, Washington
Joined: August 31, 2013
 Thanks. That clears things up for me. I couldn't figure that out just reading the Rythmik order page for the CI OB part. I am looking to add bass to my 1.7 for classical and jazz at sub 90 dB listening levels. Many recordings are fine some not so much. I have had some significant improvement putting one DWM on its own amp and setting the amp's low pass filter to the internal DWM 'crossover' level of 200 Hz. I have to turn the DWM off or down for movies as it distorts from non-musical noise...like explosions. I have been reading up on articles on open baffles and other subs - SVS, Rythmik. Counter to the trend I would not want too much bass but I suppose that's just turning down the volume.

 

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