Please analyze these A&D Subwoofer Drivers

hawkson · 20th April 2011, 04:33 PM

http://www.ad-audio.com/pdf/D18L1012_D18G812.pdf

http://www.ad-audio.com/pdf/s18l1010_s18g810.pdf

These are from A&D Audio. I would like to use them for HT.

Can they go loud and low? I would like to use them in a dual sealed box.

How would these compare to other popular 18" drivers?

Homeboydeluxe · 20th April 2011, 05:19 PM

Have you heard of WinISD? you can use it to design a box suitable for the speaker, they have an xmax of 6-7mm which is not a lot, but the large surface area would make up for it to some extent, also the Fs is in the 35-40Hz area, that is a bit high for home theatre.

What are you size restrictions for the box? It might work in a large Horn sub!

18Hurts · 20th April 2011, 06:29 PM

Those are pro audio woofers

The resonant frequency is rather high so a sealed box is a no go. Ported or passive radiator can be tuned to 27Hz if you are careful and don't mind a large box.

Horn loading two of them would be a giant box! Do you own the woofers or are thinking about using them? First figure out how low you need (15 to 20 Hz for HT sub) how loud you want it to be then how big you can go. Those eighteens would be great for music in a sealed box but you'll lose the bass at under 40 Hz unless you EQ heavily.

hawkson · 20th April 2011, 10:22 PM

Ideally they are for HT and I am considering buying them because they are made near me(China).

They aren't rated for HT use, are they?....
I have heard downloaded WinISD. Still choosing drivers before modelling a box.

bjorno · 21st April 2011, 09:20 AM

Hi,

FYI: HT use for one or two A&D-D18G812:

b

DrDyna · 01:01 PM

Those will probably be terribly boomy without a massive vented cabinet or a horn which could easily consume half of your living room if built properly large to get those to play well.

Those drivers you linked are most likely made for applications like this:
Concert sound systems
and not for home theater or music use.

I think Hi-Vi (also a Chinese company iirc) makes a couple of decent drivers that would probably perform better as home theater subs in small boxes with plate amps and their gobs of eq, like this kiddo here.

https://www.madisound.com/store/prod...oducts_id=1485

20th April 2011, 04:33 PM	#1
hawkson diyAudio Member Join Date: Apr 2011	Please analyze these A&D Subwoofer Drivers http://www.ad-audio.com/pdf/D18L1012_D18G812.pdf http://www.ad-audio.com/pdf/s18l1010_s18g810.pdf These are from A&D Audio. I would like to use them for HT. Can they go loud and low? I would like to use them in a dual sealed box. How would these compare to other popular 18" drivers?

21st April 2011, 12:58 PM	#6
DrDyna diyAudio Member Join Date: May 2007 Blog Entries: 3	Those will probably be terribly boomy without a massive vented cabinet or a horn which could easily consume half of your living room if built properly large to get those to play well. Those drivers you linked are most likely made for applications like this: Concert sound systems and not for home theater or music use. I think Hi-Vi (also a Chinese company iirc) makes a couple of decent drivers that would probably perform better as home theater subs in small boxes with plate amps and their gobs of eq, like this kiddo here. https://www.madisound.com/store/prod...oducts_id=1485 Last edited by DrDyna; 21st April 2011 at 01:01 PM.

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20th April 2011, 05:19 PM	#2
Homeboydeluxe diyAudio Member Join Date: Feb 2010	Have you heard of WinISD? you can use it to design a box suitable for the speaker, they have an xmax of 6-7mm which is not a lot, but the large surface area would make up for it to some extent, also the Fs is in the 35-40Hz area, that is a bit high for home theatre. What are you size restrictions for the box? It might work in a large Horn sub!

20th April 2011, 06:29 PM	#3
18Hurts diyAudio Member Join Date: Nov 2010	Those are pro audio woofers The resonant frequency is rather high so a sealed box is a no go. Ported or passive radiator can be tuned to 27Hz if you are careful and don't mind a large box. Horn loading two of them would be a giant box! Do you own the woofers or are thinking about using them? First figure out how low you need (15 to 20 Hz for HT sub) how loud you want it to be then how big you can go. Those eighteens would be great for music in a sealed box but you'll lose the bass at under 40 Hz unless you EQ heavily.

20th April 2011, 10:22 PM	#4
hawkson diyAudio Member Join Date: Apr 2011	Ideally they are for HT and I am considering buying them because they are made near me(China). They aren't rated for HT use, are they?.... I have heard downloaded WinISD. Still choosing drivers before modelling a box.

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