expired Posted by iconian | Staff ā¢ Dec 1, 2023
Dec 1, 2023 8:34 PM
Item 1 of 1
expired Posted by iconian | Staff ā¢ Dec 1, 2023
Dec 1, 2023 8:34 PM
Definitive Technology Demand D15 Speakers (Pair, Gloss White)
+ Free Shipping$499
$1,399
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Most of the midrange roughness in the D11 is most likely from a resonance in the passive radiator.
This is probably not present in the D15 since the design is different & the woofers which drive the passive radiators do not receive frequencies high enough to excite a resonance in the midrange.
Audioholics published very detailed, well acquired, test results for this speaker, the D15. No reason to imagine what they measure like.
https://www.audioholics
'upgrading' any driver in these will require reworking the crossover. That will be more important than anything else.
You would need to be able to measure very accurately in multiple ways and understand how to design a complex, driver specific, 3-way passive crossover. This is very difficult to do well even for very advanced hobbyists. Expect to spend significant time and resources and get a lot of help from the forums & books and getting lucky to have any chance of an improvement. Really not saying this in a condescending way, sure it might sound better to you if you slap a beryllium tweeter in there and call it done but yah it really won't be.
If you follow ASR you know even long standing companies like GR research, PartsExpress, and DIY groups using expensive Purifi drivers in custom designs have failed to impress more often than not. Heck loads upon loads of companies from entry to very high end price wise have struggled to pull off an objectively good design, even when factoring in for a wide subjective preference.
Honestly, instead of butchering the D15, I'd recommend you buy some sort of 'PEQ' and learn what can and can't be done tailoring the sound with that(big learning curve but worth it) and play around with it.
Also buy a simple 2-way DIY kit that sounds good but has some notable 'upgrade' paths and spend some time putting it together and then reworking the crossover and driver swapping in that to start to lean what goes into the situation. Who knows someday you may be a designer.
Also taking the 1/4" aluminum face off the D15 to get to the drivers is not for the faint of heart. It will not come off easily. I have taken one off a D9, it was a situation.
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Like I said I participate and contribute way more than you do. Just because someone likes and uses something doesn't mean they can't be critical of it.
And of course there are a lot of other things in life to complain about. This isn't really the forum to do that so don't know why you keep bringing it up.
I'm a consumer not a product.
This site is 100% free.
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Just admit you're a financial justice activist looking for boogeymen š¤£
I'm a consumer not a product.
This site is 100% free.
I CHOOSE to use it. It benefits me. My usage benefits the site. It's of mutual benefit.
Just admit you're a financial justice activist looking for boogeymen š¤£
If you don't like how this site is run, don't participate. Problem solved.
The length of time I've been here is irrelevant.
We've run out of real problems when we complain about how a FREE website that saves people money manages itself.
Are you a financial justice warrior?
But your bullshit advice works both ways - if you don't like the commentary from those of us who think that SD is absolutely killing this site - YOU can leave.
I don't care how long you've been here, I don't care how much you contribute - you are entitled to an opinion about the general direction that the site is headed and how it's run. And if you agree that things are getting worser, then I encourage you to speak up and let the various staffers know about it, if you can find one that hasn't been re-assigned to the Shill Squad.
But your bullshit advice works both ways - if you don't like the commentary from those of us who think that SD is absolutely killing this site - YOU can leave.
I don't care how long you've been here, I don't care how much you contribute - you are entitled to an opinion about the general direction that the site is headed and how it's run. And if you agree that things are getting worser, then I encourage you to speak up and let the various staffers know about it, if you can find one that hasn't been re-assigned to the Shill Squad.
And there's your problem. You can have an opinion about anything. Your opinion about how a FREE site that you're FREE to not use is run is as useless as a screen door on a submarine.
This post, for WHOMEVER it benefits, is a SLICK DEAL. Period.
If you find a post that isn't or is a scam, take you activism there š¤£
And there's your problem. You can have an opinion about anything. Your opinion about how a FREE site that you're FREE to not use is run is as useless as a screen door on a submarine.
This post, for WHOMEVER it benefits, is a SLICK DEAL. Period.
If you find a post that isn't or is a scam, take you activism there š¤£
* In case anyone was wondering, these do have magnetic grilles (not show in the Adorama listing).
* In my opinion, these will perform more neutral, and hence more audiophile like, than anything in the Klipsch line. With that said, a lot of folks like the Klipsch frequency response--the Klipsch sound.
* I don't really see the point of these primarily for HT use. You're going to have subs for HT. Bookshelves or other options are fine for L & R. This pair would be better for a stereo listening environment.
* These are a 3-way speakers. The tweeter, woofers, and radiators all seem to perform admirably. The mid-range, which is very key, appears to be somewhat problematic on this speaker and may explain some of the selling problems. ASR reviewed the D11, which is the same tweeter with the same midrange driver (midrange also does double-duty as the woofer in the D11), and the midrange looked pretty rough for the mid-range frequency range--too much distortion. It really performs very distored covering the bass range, which, thankfully, you don't have to worry about on this tower.
* This speaker has a nice cabinet and would be a nice project speaker to upgrade the midranges and possibly even the tweeters.
* Inventory (12/2 @ 9 PM): 230 white pairs; 105 black pairs.
* Thinking there is some chance to get this for $399 or $449 before year-end. I can't see them going much lower--seems like they'd come close to losing on shipping. At that price, I might go for the midrange project approach.
I always suggest getting the center if it is available even if you are not sure you will use it. You want similar voicing across the front three speakers. Even with EQ if you have very different tweeters it can be distracting. Of course this assumes the center design is not terrible to begin with.. If none of your other speakers match the front three it is fine especially using a modern system with EQ.
On a side note, the prior poster was spot on for three vs 2 way. In fact usually two speakers are usually superior. It is far easier to design a good cheap 2 way speaker then a good 3 or 4 way speaker.
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By all accounts, this site is a success. It's been a success for many years.
I see no evidence that any of that success was based on financial justice activists.
Clear?
A home theater center speaker has 1 purposeā¦.locking center channel audio to the screen for people sitting off to the sides.
I've read that Audioholics review many times. I wish James Larson added distortion measurements as part of his reviews. It's one of the things I like better about Amir's reviews.
Although I have a lot of interest, I have no time for a project speaker. Thanks for adding some nails in that coffin
Does the D9 measure well; what were you attempting?
Do you think the subjective portion of JL's (Audioholics) review somewhat implies that distortion is controlled at higher output?
The set was damaged and I was trying to fix them. Unfortunately the damage was too great for it to be worth it and so I returned them.
The D11 set tested @ASR was mine actually. They sounded very decent.
The HD testing would be nice. I like to see it as well.That said it generally doesn't actually tell a lot about audibility or irritability. I think that is why Audioholics skips it. The multitone testing Erin does @ EAC is a bit more helpful. Still some systems with higher harmonic distortion still sound cleaner than some with less. I really don't know why. It is beyond the scope of SD but some tests done have shown that what causes the HD/multitone distortion really affects how audible or irritating it is. Some are actually subjectively perceived as pleasant. Really a weird aspect of testing.
Anyway I would high pass the D15 to subs at something around 45-65hrz(guessing based on design) 2, 5.25" bass drivers is really just a bit more than a 6.5" --->not exactly enough for extremely clean high output below 50hrz. I bet with sub(s) and high passing they can get pretty loud cleanly but without them they are size restriced.
I would take the LSiM703 over it and keep in mind I feel the LSiM703 was a superb speaker and the best Polk speaker I have ever tried myself.
I wish I still had them but trying so many speakers led me to eventually sell them and churn.
Anyway, that speaker is hard to find now.
Definitive and Polk are very tied as companies and possibly use some of the same engineers.
I personally have liked a great many of both companies' products and think generally they sell very decent stuff for relatively good prices.
My D11 experience was totally fine. They are very decent speakers, I'd anticipate the whole is as such.
$600 last week
$500 now
That's the trend of stuff that's not selling well (for good reason?).
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