Hi all, i'm new to this section of the forums. Ok, i've got an old Soundstream Davinchi 10" subwoofer sitting in my cupboard at home awaiting amplification, so in the meantime i thought i'd see if anybody here ever had any experience with them and could offer some input on how well they perform SPL wise, or just how well they perform in general! I've had a bit of a search of the forums but couldn't find much on these anywhere. Any input is appreciated, cheers, Bryce .

only real way to find out is to put a crapload of power up it's poopa.

i would personly keep that sub for SQ..

Yeah... as an everyday it and hopefully a partner if i can find one for it will be set up for SQ so hopefully no destruction occurs when it has a run or two at SPL.

hhmm... so nobody has had any personal experience with this model?

psot a pic meet help if people can see one i had soundstream but can not remember the model number.

Okie dokie, here she is:



Click to view attachment



Click to view attachment



Ring any bells anybody? I can't believe there's no information kicking around on this forum for this model .

that looks heavy and big and i remember the RRP was in the thousands back in the day if im not mistaken

looks like spl sub to me!

yeah back in their hay-day they started out at $599USD RRP over there, so you can imagine what they retailed for over here at that stage.

beefy looking little bastard isnt it

u wanna sell it
im interested

Not at the moment sorry dude. I'm hopefully going to be able to track down a partner for it but if not there is a possibility i'll sell it at the right price, although i am very fond of it so it's not on the tables right now sorry.

not a problem

Got the T/S parameters for it?


The only info I could find, certainly looks like a tough little beastie:

Yeah i had fuddbutter find me some T/S parameters for it once but not all of em unfortunately. And yeah does look like a little bas*ard doesn't it.

Edit: Here's what was provided to me courtesy of Fuddbutter:

Name: DV-10
Type: Standard one-way driver
Shape: Round
Piston Type: Cone
Suspension: Foam surround. Conex spider.
Frame: Cast aluminum basket.
Voice Coil: 3 inch voice coil.
Magnet: 320 oz magnet.
Fs = 35 Hz
Qms = 2.079
Vas = 0.39 cu.ft
Xmax = 0.51 in
Xmax (parallel) = 0.51 in
Xmax (series) = 0.51 in
Qes = 0.913
Qes (parallel) = 0.457
Qes (series) = 0.457
Z = 2 ohms
Z (parallel) = 1 ohm
Z (series) = 4 ohms
Pe = 500 watts
Pe (parallel) = 1000 watts
Pe (series) = 1000 watts
Qts = 0.634
Qts (parallel) = 0.374
Qts (series) = 0.374
2.83-V SPL = 86 dB
2.83-V SPL (parallel) = 92 dB
2.83-V SPL (series) = 86 dB

Should still be able to build a reasonable enclosure from those.

What amp/s have you got?

I'd be interested to see what it could do with ~2.5-3kW.

A soundstream PCA3500D on its way. Dunno how well a single one would hold up under that much power but we'll see how things turn out when it's all setup. Is there anything you can listen for to determine if you're feeding a subwoofer more power than it can handle? I've heard of 'bottoming out' but is that really something you can clearly hear when it starts happening?

Obviously i'm a bit more brutal than you are.
With a well designed box and careful tuning, i'm sure it would hold up against a 3kW burp. Maybe not too many of them.

But seriously, if you're going for an SQL setup, it will take the 1.8kW (@ 4ohm) all day long.

Should be a nice setup.

Why are you after a second one?

Yeah... don't get me wrong i'd love to thrash the crap out of it, just don't like the prospect of blowing the crap out of it and being left with a broken bum woofer. What's the best way to tell if you're force feeding it too much? After a second one to raise hell . Nah i suppose i'd just like a second one to give it that little bit more juice for good old shonky local sound off comps and to compliment it. Although for the time being my bank balance isn't complimenting my spending habits so i'd say i'll probably be playing with the one for the time being.



Just out of curiousity, how come it's possible to safely give subs more juice at higher levels of resistance? Is it a case of although you might be pushing 1.8kw into it by the time it reaches the subs 4 ohm resistance it's not actually 1.8kw going into it? Because previously i've always looked at resistance in subs as just being something you match powerwise with amplifier, but thinking it over, is it true to say that a sub having 1kw pushed into it at 4 ohms is actually getting less power than a sub having 1kw pushed into it at 1 ohm? Or how's it work, i think i've confused myself more than ever.

because at higher resistances, the amp can control the sub better, dapmening factor, slew rates and cone control are al better at higher resistances.....thats why if you could get an amp that puts out say 1kwrms at 4 ohms is better (and more expensive)than one that puts out the same at 1ohm.....

and dont quote me on this, but i think thats the reason why in HT setups, the nominal resistance of most speakers is 8ohm.....

So that would explain why for example an amplifier capable of handling twice the subwoofers ability will perform better than one only capable of handling exactly the subs ability, simply because you can wire it up to have a higher resistance while still recieving the same power (and hence better handling)?



Thanks for the info, if anyone else can also elaborate even more that'd be great.



P.S. Assuming HT stands for High Tension?

Think it may be home theater

oh yup, that makes more sense in the context