what are DD 1508 subwoofer specs?!??!?

[memphis_vette 10+ year member]

hey guys im trying to design a box using winISD. they dont have the 1508 specs indata base so im adding it but DD doesnt show specs for the woofer only for 1510 and 1512. does anyone know the full specs?

Click to read more...

 

[Buck 5,000+ posts]

email DD

 

[memphis_vette 10+ year member]

ok ill try that

 

[Popwarhomie 5,000+ posts]

Didn't Sundownz have them to compare to the new SA-8? Id PM him.

 

[Cabin_Pressure 10+ year member]

ok ill try that

Didn't you buy a pair? They not come with paperwork? Or have they not arrived yet?

 

[gunz4me2 10+ year member]

This is what Sundown posted on another forum:

DD 1508 (D4) :

RE 7.48 ohms (series)

FS 44.6 Hz

Qes 0.844

Qms 9.217

Qts 0.773

Le 6.446 mH

Vas 4.672 L

BL 17.78 NA

Cms 99.97 uM N

Mms 126.977 g

Sens 78.77 dB @ 1w1m

BL^2 42.26

 

[sundownz Pro Seller]

Yep, that is what I measured from one of the 1508s I have here.

 

[ciaonzo 5,000+ posts]

Fs of 45Hz, Qts of .773 and guys are sticking these in vented enclosures?

 

[350zspl 10+ year member]

if your doing 2 each in your hatch of your vette

subs back port back

subs up port back

2 net cubes

35-40 hertz

500 to 1000 rms per driver

i would use 1 6" aero port

 

[supermaxx123 10+ year member]

Fs of 45Hz, Qts of .773 and guys are sticking these in vented enclosures?

isn't that what dd says to do? they never did show specs of this on there website.

 

[RAM_Designs 5,000+ posts]

If they were impressive and conducive to what they want you to believe, they'd post them...but they aren't. DD has a solid following and a certain aura about them, and in reality doesn't need to post specs for anything and will still sell.

 

[sundownz Pro Seller]

The high Qts gives them a "boomy" sound that many people love -- it was probably on purpose... IMO. The DD 2515s I have at the shop had a 0.7 Qts as well.

 

[RAM_Designs 5,000+ posts]

Fs of 45Hz, Qts of .773 and guys are sticking these in vented enclosures?

But, but...that's what DD says to do.

edit: add on an EBP of 53 as well.

 

[supermaxx123 10+ year member]

The high Qts gives them a "boomy" sound that many people love -- it was probably on purpose... IMO. The DD 2515s I have at the shop had a 0.7 Qts as well.

since your here how would the boomy sound compare to the sa8? i have always wanted to try a 1508.

 

[gunz4me2 10+ year member]

If they were impressive and conducive to what they want you to believe, they'd post them...but they aren't. DD has a solid following and a certain aura about them, and in reality doesn't need to post specs for anything and will still sell.

One of my friends said they don't post them because they hand build each woofer and truly don't know the TS parameters.

Regardless, I've used them and they seem to work. DD has also changed their tune since I first started dabbling with their subwoofers. At first, they were strictly recommending tuning from 40 to 45 Hz whereas I ran the 1508 in an old 10" subwoofer enclosure tuned to 35 Hz. Now I see that they recommend 35 to 40 Hz on their website for the 1508s.