Paducah Home Theater Posted March 14, 2016 Share Posted March 14, 2016 You guys seen these? Oh my. 1 Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted March 14, 2016 Share Posted March 14, 2016 I've seen them and they are very nice. Spring is around the corner and who knows if I will build something just to be doing it, lol. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 14, 2016 Author Share Posted March 14, 2016 Makes me want to put these ultimax's behind me and get four of these up front. Those cones look good. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted March 14, 2016 Share Posted March 14, 2016 My UM 18's aren't going nowhere, lol. They are just to nice of an all around driver for the price. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 14, 2016 Author Share Posted March 14, 2016 I was kind of surprised though, their announcement said they're in customs. Sounds like the entire things are being built in China and shipped over. Considering he had serious health issues plus wasn't making anything on the HT's, I guess that was inevitable. 1 Quote Link to comment Share on other sites More sharing options...
Edgar_in_Indy Posted March 14, 2016 Share Posted March 14, 2016 So are these supposed to out-perform the UM18's? Quote Link to comment Share on other sites More sharing options...
fuzzydog Posted March 14, 2016 Share Posted March 14, 2016 Love the inverted dust cap. I wonder if they could withstand a toddler... Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted March 14, 2016 Share Posted March 14, 2016 The UM 18's can handle a small child. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 14, 2016 Author Share Posted March 14, 2016 (edited) So are these supposed to out-perform the UM18's? http://www.avsforum.com/forum/155-diy-speakers-subs/2206417-stereo-integrity-ds4-18-a.html If those preliminary specs are still accurate, it probably would just barely, at least in terms of output. 4mm more xmax, 4" vs. 3" voice coil. Same xMech though. I don't see them beating the distortion on ultimax's though. Ultimax's are at like 3% even at 115 db from about 32 hz and up. I have yet to see another mass marketed HT sub that can do that, even LMS Ultra's. HST-18's can't do that. Edited March 14, 2016 by MetropolisLakeOutfitters Quote Link to comment Share on other sites More sharing options...
Edgar_in_Indy Posted March 14, 2016 Share Posted March 14, 2016 The UM 18's can handle a small child. That's actually one of my favorite features of the UM18, and for me it could be a deciding factor, even if a competitor had slightly better performance. Quote Link to comment Share on other sites More sharing options...
Scrappydue Posted March 16, 2016 Share Posted March 16, 2016 I'm pretty sure they will beat the ultimax. The ht-18 was dang close for 100$ less. And these are same price as the ultimax. I could be wrong though. It has happened before. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted March 16, 2016 Share Posted March 16, 2016 When you talk about one 18 driver beating another, it tricky because depending on which box size and design, you could pretty much end up being so close between the drivers that it is not really a major consideration. Most folk doing DIY are going to have multiple subs to get the job done right. I am not talking about high spl, nice clean bass and even room coverage. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 16, 2016 Author Share Posted March 16, 2016 (edited) Biggest thing it will have on the ultimax is the 4" coil which will handle long term high power loads better due to heat dissipation, but I'm not sure that was really ever an issue with home theater in the first place. Even then though you can't really go by that, because tighter tolerances dissipate heat better. A 3" coil with tight tolerances may dissipate heat better than a 4" coil that's not so tight. Otherwise everything else is so similar that I doubt you'd be able to tell the difference in a blind test, and I doubt you'd be able to tell on this either. SPL at 2.83 V / 1 meter is within half a decibel. xMech is exactly the same. Fs is less than 1 hz difference. I don't totally understand Le, since it is supposedly married to Re, but just going by that raw number vs. what was measured at data-bass, it's within 0.04 mH, might as well just say it's exactly the same. Yeah one way xMax is 4mm more, but realistically speaking that only equates to 0.3" more worth of linear stroke, biggest limitation still being xMech, which is exactly the same. Biggest question is measured distortion. Otherwise I seriously doubt anybody could tell the difference just listening to them based on what little information is available. Edited March 16, 2016 by MetropolisLakeOutfitters 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 16, 2016 Share Posted March 16, 2016 Go BIG or go home. Quote Link to comment Share on other sites More sharing options...
Scrappydue Posted March 17, 2016 Share Posted March 17, 2016 Biggest thing it will have on the ultimax is the 4" coil which will handle long term high power loads better due to heat dissipation, but I'm not sure that was really ever an issue with home theater in the first place. Even then though you can't really go by that, because tighter tolerances dissipate heat better. A 3" coil with tight tolerances may dissipate heat better than a 4" coil that's not so tight. Otherwise everything else is so similar that I doubt you'd be able to tell the difference in a blind test, and I doubt you'd be able to tell on this either. SPL at 2.83 V / 1 meter is within half a decibel. xMech is exactly the same. Fs is less than 1 hz difference. I don't totally understand Le, since it is supposedly married to Re, but just going by that raw number vs. what was measured at data-bass, it's within 0.04 mH, might as well just say it's exactly the same. Yeah one way xMax is 4mm more, but realistically speaking that only equates to 0.3" more worth of linear stroke, biggest limitation still being xMech, which is exactly the same. Biggest question is measured distortion. Otherwise I seriously doubt anybody could tell the difference just listening to them based on what little information is available. i get what your saying but if the ht-18 was ALMOST as good and this one is a substantial price increase? I'm optimistic. I think it's gonna be better. Nice makes beast drivers so I'm sure it won't disappoint. Quote Link to comment Share on other sites More sharing options...
Scrappydue Posted March 17, 2016 Share Posted March 17, 2016 Go BIG or go home. i need one of these. Bad. Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted March 21, 2016 Author Share Posted March 21, 2016 I'm pretty sure they will beat the ultimax. The ht-18 was dang close for 100$ less. And these are same price as the ultimax. I could be wrong though. It has happened before. I was just looking at these on data-bass. These two are so close on most everything that it's not even worth mentioning, worst it ever gets is with the ultimax beating it by like 1 decibel and distortion levels at 115 db on both are within like half a percent. I just wonder what all this new one will try to improve. Quote Link to comment Share on other sites More sharing options...
fuzzydog Posted March 28, 2016 Share Posted March 28, 2016 FYI, these drivers are now available for ordering through Sundown Audio. They posted a link to the order form on AVS here: http://www.avsforum.com/forum/155-diy-speakers-subs/2206417-stereo-integrity-ds4-18-a-12.html I just ordered one. 1 Quote Link to comment Share on other sites More sharing options...
fuzzydog Posted March 28, 2016 Share Posted March 28, 2016 This graphic was posted on the AVS forum thread by a Sundown rep for anyone interested. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted March 28, 2016 Share Posted March 28, 2016 It's an 18" driver not a 420 mm driver. I wish they'd pick a unit of measurement and stay with it. Quote Link to comment Share on other sites More sharing options...
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