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LDW 1 woofers (Little Dipolar Woofer) post found on FB,

68.8.28.120

Posted on October 18, 2020 at 18:12:53
Green Lantern
Audiophile

Posts: 15500
Location: San Diego, Ca
Joined: November 12, 2002
Contributor
  Since:
June 17, 2003
from fb (not me):


Just unboxed the LDW 1 woofers (Little Dipolar Woofer) shipped to me for review. They were securely packaged in sturdy boxes and the finish is professional and very durable looking and they are built like a tank. I will be listening to these on a both the 1.7i and LRS ( which they were originally designed to companion with). May get in an initial listen in later to day on a break from tuning about 2 dozen stands that need to be shipped.









 

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RE: LDW 1 woofers (Little Dipolar Woofer) post found on FB, , posted on October 18, 2020 at 23:21:12
emailtim
Audiophile

Posts: 2186
Joined: July 2, 2017
That Parts Express/Dayton Audio plate amp is packed with a considerable amount of configurable features.

https://www.parts-express.com/pedocs/manuals/300-8010-dayton-audio-spa250dsp-user-manual.pdf

 

RE: LDW 1 woofers (Little Dipolar Woofer) post found on FB, , posted on October 19, 2020 at 03:31:17
Green Lantern
Audiophile

Posts: 15500
Location: San Diego, Ca
Joined: November 12, 2002
Contributor
  Since:
June 17, 2003
thanks for the tip; looks like they're sold out of that $200 ea plate amp.

I wonder what driver they're using..


 

RE: LDW 1 woofers (Little Dipolar Woofer) post found on FB, , posted on October 19, 2020 at 05:36:47
MarcL
Audiophile

Posts: 309
Location: PA
Joined: February 26, 2019
I saw you asked a few questions on the other forum. Did the answers make sense regarding the direction of the cardioid pattern, etc.?

The bit that Pass "approved" the design was kind of ... vague?

Honestly I was surprised at how many people were so critical of this product when I (innocently) posted over on the FBook page. Like, arguing with me about what a bad idea it is. Maybe it won't be "30.7 for Condos" ... only "1.7 for apartments"? :-)




Agilist, Musician, Photographer, Audiophile
Magneplanar: 3.7, CC5, MC1, DWM; Outlaw: UltraX12, LFM-1C; Emotiva: XMC-1, PA-1; Nord: Nord One NC500DM; Outlaw: Model 7500; OPPO 205

 

RE: LDW 1 woofers (Little Dipolar Woofer) post found on FB, , posted on October 19, 2020 at 07:10:28
Davey
Audiophile

Posts: 2153
Joined: September 26, 2013
The point of contention is the labeling as a "dipole" woofer scheme. That's simply a vented-box woofer with the "box" sort of contorted around to fit the placement. I see nothing innovative at all. The impedance plot will look something like a typical double-hump.

Supposedly it's inspired by the slot-loading technique employed by Pass in one his efforts, but the loading in this case isn't anything like that.

Robert Raus is an appropriate person to evaluate the woofer because he doesn't have any technical or speaker-design background and will evaluate it subjectively

Dave.

 

RE: LDW 1 woofers (Little Dipolar Woofer) post found on FB, , posted on October 19, 2020 at 09:14:04
emailtim
Audiophile

Posts: 2186
Joined: July 2, 2017
The comments came off to me as advertising gimmick "name dropping". Phrases like "tested with a Pass Labs amp" doesn't make it any more of a Pass Labs' design then my OB/Dipole subs tested with a Mark Levinson or Jeffrey Rowland amp make it a ML or JR sub.

I see the diagram now indicates it as a cardioid design. I still think the diagram is backwards though if you actually measure the radiation pattern vs the SPL in the constricted port.

From Linkwitz Labs, U-Frame on right:

H-Frame and U-Frame:

That being said, the end result is how it sounds. Supposedly, there are reviews in the works.

 

RE: LDW 1 woofers (Little Dipolar Woofer) post found on FB, , posted on October 19, 2020 at 09:28:06
emailtim
Audiophile

Posts: 2186
Joined: July 2, 2017
One other thought. It uses the floor and the LRS as top and bottom baffles on the port side, so their effect need to be taken into account. There are no left and right baffles like in the SLOB design.

 

RE: LDW 1 woofers (Little Dipolar Woofer) post found on FB, , posted on December 31, 2020 at 20:31:59
Vizrock
Audiophile

Posts: 1
Joined: December 31, 2020
Hi Green Lantern,
Just wondering whether you've tested these LDW's yet. I'm looking at purchasing a couple of these for my Magnepan LRS Speakers here in Australia, but there's no way of me auditioning them. Would appreciate any insight.
Thanks
Anthony

 

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