digital designs... - Page 2

Cheers

Somebody that truly believes in the DD offerings, send a sample in to data-bass for testing and verification.

DD subs have been tested many times over the years and have had there results posted on car audio sites.

the Z series is pointless for anyone not doing SPL comps. The subs only good for around 25 uses before SPL numbers start to drop.

After watching David at FixMySpeaker tear a DD sub down and point out all of the parts that could have been assembled better, I wouldn't spend any money on them.

This is why I'm glad I am not into car audio anymore. I have no idea what a "burp" sub is but I imagine it's making a really loud, brief 50 Hz tone or something like that? That's sad and pathetic. Who'd have thought that we'd get to the point where you'd design an audio system that isn't designed for music. That's like building a car not meant to be driven (oh wait, people do that too).

Yea!! They're called "hybrids"

How is it any different than building a car that only does left turns (Nascar) or a car thats only meant to go straight (drag racing) and engines that only last one race (both).

Besides the fact that racing takes a driver and talent and burping is an exercise in futility, I don't know.

thats kinda of what scott did with fi took his old re brand and made it better, david stuck with re/ psi

One quote from the site:
"The Z series represent the pinochle of transducer archeology. The unique design dates back to the precocious era of unequivocal magnetism and the vector planar research of underwater acoustic proliferation."
and
"...the voice coils are spiral wound in reversing layer directions for optimum efficiency and the voice coil former is really strong. "

Seriously, the "pinochle of transducer archeology?" Anyone have any idea what happens if you wind a coil with each layer in opposite direction?

Beast is right, this site is hilarious, but the resulting thread is far, far more entertaining. Everyone who posted, take this as a sign that you need to get a life!

Perhaps pinochle archeology? How many cards in an ancient deck?

Have fun,
Frank

You say there's no talent required to build a 7th order bandpass box?

Agreed. put up or shut up as they say.

The putups here

http://www.termpro.com/asp/lb.asp?Li...Class_Select=0

and here

http://www.termpro.com/asp/worldrecords.asp?Org_ID=1

Oh okay, DD do 181db from what hz to what hz?

The test tone consists of a very short resonating tone between 30 Hz and 70 Hz...often referred to as the burp.

You do realize that taking the time to comment and tell us to get a life demonstrates you need to take your own damn advice. Your post provides nothing of value to the community. I'm just sayin.

You+pot=black kettle.

Matt.

And still, no measurements/specs.

Boring thread is boring.

I'd just like to chime in here and say a few things.

I'm from the car audio world and disagree with a lot of things here.

First, I don't have this huge amount of respect for DD and would honestly never run their subs. I'm not sure why people here in this thread keep saying that everyone loves DD. Sure, a lot of people like DD but those are the ones who chase numbers and build burp boxes. I have no respect for that which brings me to my next point.

The act of burping, building burp boxes, and chasing dbs seems so stupid to me. So what your sub can fart 150db @ 52hz. I'm not impressed and actually like you even less if you do that stuff. Also, a sub is not good because it is capable of putting up high numbers on the term lab. Theres a youtube video somewhere of a guy who takes a Sundown Audio SA-8 and puts it in a 5 gallon BUCKET with an external aero port and hits over 150dbs in his Honda CRX. Again, not impressed AT ALL.

I respect you HT guys who are able to to get flat response curves and get loud at the same time. Seriously.

There are too many people out there who just want to throw some subs in their car and play some frequency to put up a number, but don't think that the entire industry is like that. Really, most people have daily setups which are suppose to sound pretty good but have a huge emphasis on bass. I guess you could call this SQL - sounds decent and can shake your face off.

I had some more stuff to say but forgot it at the moment. Let me know what you guys think. HT and car audio are two very different hobbies IMO

Oh, and car audio brands that I like in regards to subwoofers are Sundown Audio and TC Sounds. I hear Fi is pretty good too but I've never played with any of their stuff.

I don't think this was meant to be too serious. I actually thought this post was pretty funny, and the hidden sarcasm about being trolled was great. That last line cracked me up! Thanks.

Also, what's with all the car SPL trolls in DIY recently?

Data-bass currently has a Sundown Zv3 18" for testing. I may send a couple of the other models. The 15" only needs 1.6ft3 for a Qtc of .7, 2.5 gets you into the mid .6s...

You will never find any specs for the Z series because it's a custom made companion sub, just like you won't find all the specs of a race car. But you can check out the spec of there other subs.

Model No : 9518g

Magnet Weight 406 oz
item 9518g
Nominal Impedance D.5,D.7,D1.0,D1.5,D2.0,D4.0 Ohm
Port Area (sq in) 100
Port Length (in) 20
Power Handling RMS/Peak 1500/6000
QTS 0.40
QES 0.46
QMS 3.7
Rec Box (cubic ft) 6
Shipping Weight 62 lbs
Suspension Travel 80 mm
VAS 82L
Voice Coil Diameter 3"
Woofer Diameter 18"


Also DD has one some Sq comps and they have been around since 1986.

You mean "won" some competitions right?

Dude, that tells me about zilch about the driver itself.

How could you say that? I think this thread is hilarious!!!

At least my legs are the same length....

I thought it funny that a vendor does a tongue-in-cheek product page, and a bunch of folks go ballistic on the claims, as if they were serious.

Maybe if it were April 1, you'd realize that I don't understand why you're not laughing. Beast gets it...

Have fun,
Frank

If you need more info e-mail them.