Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Discussion
Subwoofers
Cheap DD Replicas
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="sundownz" data-source="post: 3377166" data-attributes="member: 549523"><p><a href="http://www.pnrcaraudio.com/images/aKO15-1507A.jpg" target="_blank">http://www.pnrcaraudio.com/images/aKO15-1507A.jpg</a></p><p></p><p>Name is "Konaki" and they are essentially a DD 9500 copy as far as parameters and motor design.</p><p></p><p>I just measured the T/S on the 15" D1 Konaki here today... a customer of mine just got four of them and pulled 147.8 dB in a *terrible* box for the meter that he threw together and one SAZ-3000D on stock Ford Expedition electrical. I'm going to help him make a better box and he will be picking up a second amp... so it should do well by then. But, that is not the point of the post.</p><p></p><p>Anyhow:</p><p></p><p>Re = 1.88 ohms</p><p></p><p>Fs = 41.42 Hz</p><p></p><p>Qes = 0.446</p><p></p><p>Qms = 9.35</p><p></p><p>Qts = 0.425</p><p></p><p>Le = 2.80 mH</p><p></p><p>VAS = 26.6 L</p><p></p><p>BL = 21.33 N/A</p><p></p><p>Cms = 35.5 um/N</p><p></p><p>Mms = 414 grams</p><p></p><p>So... this is a copper coil just like DD, uses the DD G basket, judging by Mms and visual inspection the coil is the exact height as a DD.</p><p></p><p>The BL^2 / RE is higher than the DD 9510E that I measured -- 198 for the DD and 242 for this woofer.</p><p></p><p>The Cms is actually lower than the DD 9510E that I measured, quite a LOT stiffer. This design uses a spider spacer rather than just stacking them up.</p><p></p><p>The pole has the same cross-drills as the DD 9500 motor... I can't cut it down to see if it has the cooling channels in the pole. It does NOT have the top plate channels, though... but otherwise, so far, appears to be a DD 9500 replica done fairly well.</p><p></p><p>The bad... build quality isn't up to DD standards. He popped off the spider landings and had to glue them back down. The good... would probably work quite well after you broke the spider landing off the first time and re-glued it with epoxy (which he did and they are fine now).</p><p></p><p>I think they literally sent a 9500 to China and said "copy this speaker"</p><p></p><p>----</p><p></p><p>... and no, I'm not suggesting you sell your DDs and buy these. I just found it pretty interesting that this company just plain copied DD so blatantly. Thought I'd share.</p><p></p><p>Discovered some more QC issues with another one, the bottom spider broke @ the triple joint. It still plays as the top spider is still attached but does make a nasty popping noise at high excursion.</p><p></p><p>Consider these poorly assembled DDs *laughs*</p></blockquote><p></p>
[QUOTE="sundownz, post: 3377166, member: 549523"] [URL="http://www.pnrcaraudio.com/images/aKO15-1507A.jpg"]http://www.pnrcaraudio.com/images/aKO15-1507A.jpg[/URL] Name is "Konaki" and they are essentially a DD 9500 copy as far as parameters and motor design. I just measured the T/S on the 15" D1 Konaki here today... a customer of mine just got four of them and pulled 147.8 dB in a *terrible* box for the meter that he threw together and one SAZ-3000D on stock Ford Expedition electrical. I'm going to help him make a better box and he will be picking up a second amp... so it should do well by then. But, that is not the point of the post. Anyhow: Re = 1.88 ohms Fs = 41.42 Hz Qes = 0.446 Qms = 9.35 Qts = 0.425 Le = 2.80 mH VAS = 26.6 L BL = 21.33 N/A Cms = 35.5 um/N Mms = 414 grams So... this is a copper coil just like DD, uses the DD G basket, judging by Mms and visual inspection the coil is the exact height as a DD. The BL^2 / RE is higher than the DD 9510E that I measured -- 198 for the DD and 242 for this woofer. The Cms is actually lower than the DD 9510E that I measured, quite a LOT stiffer. This design uses a spider spacer rather than just stacking them up. The pole has the same cross-drills as the DD 9500 motor... I can't cut it down to see if it has the cooling channels in the pole. It does NOT have the top plate channels, though... but otherwise, so far, appears to be a DD 9500 replica done fairly well. The bad... build quality isn't up to DD standards. He popped off the spider landings and had to glue them back down. The good... would probably work quite well after you broke the spider landing off the first time and re-glued it with epoxy (which he did and they are fine now). I think they literally sent a 9500 to China and said "copy this speaker" ---- ... and no, I'm not suggesting you sell your DDs and buy these. I just found it pretty interesting that this company just plain copied DD so blatantly. Thought I'd share. Discovered some more QC issues with another one, the bottom spider broke @ the triple joint. It still plays as the top spider is still attached but does make a nasty popping noise at high excursion. Consider these poorly assembled DDs *laughs* [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Subwoofers
Cheap DD Replicas
Top
Menu
What's new
Forum list
