Archaea Posted November 17, 2013 Report Share Posted November 17, 2013 What do you guys think about the new sub from part-express due out Jan 2014? I can't link it here for some reason - but it looks like a bit of a step up for the lower bass frequencies for the DIY community over the 18" HO driver. Link to comment Share on other sites More sharing options...
Ricci Posted November 17, 2013 Report Share Posted November 17, 2013 It will probably be good but I don't think anyone can say anything definitive about it at this point. I will see if I can get one to test when it comes out. Link to comment Share on other sites More sharing options...
lilmike Posted November 18, 2013 Report Share Posted November 18, 2013 Interesting looking driver. A glance at the specs suggests that it looks a bit light when I compare motor force to cone area. Should work fine in a sealed box, not sure it will be a good fit in higher-order alignments though. I'm interested in all of the information that you can't get from looking at T/S parameters though - like motor linearity and suspension symmetry, distortion behavior, and mechanical clearances. Hope that you do get one to play with Josh, interested in some real-world data and impressions. Link to comment Share on other sites More sharing options...
Ricci Posted November 18, 2013 Report Share Posted November 18, 2013 Same here Mike...I want to know coil overhang, mechanical clearances, Klippel data, etc...The MMS on this thing calculated out to 641 grams which is HEAVY so sensitivity will be really low up top. Motor force isn't bad at about 135 normalized but combined with the huge mms I doubt it will be suitable for any real loading on it without a giant cab. Mark mentioned over at AVS that the 22mm xmax is not the coil overhang. I was really hoping it was. Link to comment Share on other sites More sharing options...
Archaea Posted August 12, 2014 Author Report Share Posted August 12, 2014 Ricci, did you end up picking one of these up? Link to comment Share on other sites More sharing options...
Ricci Posted August 12, 2014 Report Share Posted August 12, 2014 Nah. I ordered mine through PayPal way back last year and they refunded me minus PayPal fees so...I haven't ordered one. I might just see if Rory can pull some strings to send one as I won't keep it either way. Link to comment Share on other sites More sharing options...
derrickd1 Posted August 29, 2014 Report Share Posted August 29, 2014 I have the Ultimax in a dual sealed box and a large vented box. This driver works well in a large vented enclosure. Link to comment Share on other sites More sharing options...
Archaea Posted November 18, 2014 Author Report Share Posted November 18, 2014 Ricci, is a test of one of these in the pipeline? Link to comment Share on other sites More sharing options...
Ricci Posted November 21, 2014 Report Share Posted November 21, 2014 I have tried to register at PE TechTalk forums 3 times and my account is never approved. I don't know why. I sent a PM tp Rory at AVS a couple of days ago asking about getting one to test but he has not contacted me back. Link to comment Share on other sites More sharing options...
Infrasonic Posted November 24, 2014 Report Share Posted November 24, 2014 Interesting. Link to comment Share on other sites More sharing options...
Ricci Posted November 25, 2014 Report Share Posted November 25, 2014 I will try a pm to him again. I don't know what is up with the PE forum thing. I cannot seem to get my account activated. Oh well. Link to comment Share on other sites More sharing options...
Archaea Posted February 3, 2015 Author Report Share Posted February 3, 2015 At this point if Rory at P.E. is still dodging you I'm starting to get suspicious they don't want it tested, and if they don't want it tested that can't be good right? I've been pretty pleased with my eight, and lukeamdman said that pennynike's eight in his terraform were pretty darn durable and impressive in the ported variant of Seaton's design. So it is vexing. Link to comment Share on other sites More sharing options...
Ricci Posted February 3, 2015 Report Share Posted February 3, 2015 Rory gave me another contact at PE to inquire with. I sent 2 emails and never heard anything back. That is where it sits. Link to comment Share on other sites More sharing options...
lukeamdman Posted February 3, 2015 Report Share Posted February 3, 2015 I'm tempted to just buy one and send it to you. Link to comment Share on other sites More sharing options...
MDST Posted February 4, 2015 Report Share Posted February 4, 2015 Hey Ricci. I know this is not the correct thread for this but I think is more easy to buy one of this: http://www.amazon.com/Alpine-SWR-1522D/dp/B000CFBYQM/ref=sr_1_1?ie=UTF8&qid=1423022764&sr=8-1&keywords=Alpine+1522D And test for results. Cheers Link to comment Share on other sites More sharing options...
Ricci Posted February 4, 2015 Report Share Posted February 4, 2015 The thing is at this point I don't want to "buy" drivers to test. I still do of course but only the ones I would be interested in keeping or using myself. I have bought a lot of the drivers tested for DB and I always take a healthy loss on them when I try to resell them. Link to comment Share on other sites More sharing options...
shrub0 Posted October 7, 2015 Report Share Posted October 7, 2015 Is there any meaning to the impulse being negative at time=0 ? Link to comment Share on other sites More sharing options...
Ricci Posted October 7, 2015 Report Share Posted October 7, 2015 No. It is simply not aligned to the graph well. Link to comment Share on other sites More sharing options...
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