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expired Posted by iconian | Staff • Dec 1, 2023
expired Posted by iconian | Staff • Dec 1, 2023

Definitive Technology Demand D15 Speakers (Pair, Gloss White)

+ Free Shipping

$499

$1,399

64% off
Adorama
319 Comments 84,663 Views
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Deal Details
Update: This popular deal is still available.

Adorama has Definitive Technology Demand D15 Speakers (Pair, Black or White) on sale for $499. Shipping is free (select free shipping during check out).

Thanks to Deal Editor iconian for sharing this deal.

Available Colors:
Key Details:
  • Proprietary Drivers detailed, balanced audio
  • Tweeters - Clear, Precise Highs
  • Midrange - Superior Detail & Natural Midrange
  • Woofers - Deeper, Cleaner Bass
  • Dual 8" Passive Bass Radiators for visceral bass response
  • Audiophile-Quality Crossovers for beautifully balanced audio
  • Linear Response Waveguide for natural, precise imaging

Editor's Notes

Written by SubZero5 | Staff
No Longer Available:

Original Post

Written by iconian | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available.

Adorama has Definitive Technology Demand D15 Speakers (Pair, Black or White) on sale for $499. Shipping is free (select free shipping during check out).

Thanks to Deal Editor iconian for sharing this deal.

Available Colors:
Key Details:
  • Proprietary Drivers detailed, balanced audio
  • Tweeters - Clear, Precise Highs
  • Midrange - Superior Detail & Natural Midrange
  • Woofers - Deeper, Cleaner Bass
  • Dual 8" Passive Bass Radiators for visceral bass response
  • Audiophile-Quality Crossovers for beautifully balanced audio
  • Linear Response Waveguide for natural, precise imaging

Editor's Notes

Written by SubZero5 | Staff
No Longer Available:

Original Post

Written by iconian | Staff

Community Voting

Deal Score
+70
Good Deal
Visit Adorama

Price Intelligence

Model: Definitive Technology Demand D15 Floorstanding Speaker, Right and Left, Black

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
11/24/23Adorama$599 frontpage
34
09/15/23Adorama$699 frontpage
29
06/19/23Adorama$799 popular
35
05/19/23Adorama$849 frontpage
34
04/20/23Adorama$999 frontpage
45
Show More
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Top Comments

Hi, the D11 uses a 6.5" mid/woofer; these use a 5.25". These would be something like the D9 stacked on top of the dual 5.25" bass woofers.
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.com/tower...demand-d15

'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.
It's not found, it's a promotion exclusive to SD. Lots of Adorama posts are.
No amps on these. Passive radiators only.

319 Comments

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Dec 1, 2023
2,569 Posts
Joined Jul 2013
Dec 1, 2023
BeepBopBeep
Dec 1, 2023
2,569 Posts
Wow that's a good price
3
Dec 1, 2023
125 Posts
Joined Dec 2013
Dec 1, 2023
Rabbideal
Dec 1, 2023
125 Posts
This vs Klipsch reference premiere equivalent?
1
Dec 1, 2023
169 Posts
Joined Apr 2010
Dec 1, 2023
iuser
Dec 1, 2023
169 Posts
Quote from BeepBopBeep :
Wow that's a good price
If you don't follow the link (Adorama email deal?) and go to Adorama directly, it will show $999.00 ($400 off). The link is $499.00 ($900.00 off). An amazing deal or a pricing error? Amazon is $700 each.
5
Dec 1, 2023
53 Posts
Joined Jan 2015
Dec 1, 2023
tfpHumorBlog
Dec 1, 2023
53 Posts
Whoever found this link is a genius. It's not searchable on their website. Would love to know how OP discovered it. So I can shake your hand. Hope they honor the price, as it's likely a pricing error. If my order gets cancelled, I'll post here. But OP, right now, you're my hero.
2
8
Dec 1, 2023
4 Posts
Joined Jul 2019
Dec 1, 2023
RajM2
Dec 1, 2023
4 Posts
This is a ridiculous deal. well done OP
2
Dec 1, 2023
11,600 Posts
Joined Aug 2004
Dec 1, 2023
Hoseman666
Dec 1, 2023
11,600 Posts

Our community has rated this post as helpful. If you agree, why not thank Hoseman666

Quote from tfpHumorBlog :
Whoever found this link is a genius. It's not searchable on their website. Would love to know how OP discovered it. So I can shake your hand. Hope they honor the price, as it's likely a pricing error. If my order gets cancelled, I'll post here. But OP, right now, you're my hero.
It's not found, it's a promotion exclusive to SD. Lots of Adorama posts are.
2
1
Dec 1, 2023
1,337 Posts
Joined Apr 2017
Dec 1, 2023
Undefined.null
Dec 1, 2023
1,337 Posts
Quote from iuser :
If you don't follow the link (Adorama email deal?) and go to Adorama directly, it will show $999.00 ($400 off). The link is $499.00 ($900.00 off). An amazing deal or a pricing error? Amazon is $700 each.
It's often like that for Adorama when they promote offers on slick deals.

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Dec 1, 2023
42 Posts
Joined Jan 2019
Dec 1, 2023
Latraty
Dec 1, 2023
42 Posts
Valid in North Carolina
4
Dec 1, 2023
11,600 Posts
Joined Aug 2004
Dec 1, 2023
Hoseman666
Dec 1, 2023
11,600 Posts
$700 3 months ago.

$600 last week

$500 now

That's the trend of stuff that's not selling well (for good reason?).
1