What do these T/S Parameters say?

[_PuNiShEr_ 10+ year member]

What size of box would these parameters line up with?

Effective piston area (Sd) 355.4 cm2

Free air resonance (Fs) 34.0 Hz

DC resistance (Re) 3.8 Ω

Mechanical Q factor (Qms) 5.22

Electrical Q factor (Qes) 1.78

Total Q factor (Qts) 1.33

Voice coil inductance (Le) 1.11 mH/milli-Henrys

Equivalent air volume (Vas) 76.8 Liters

Moving mass (Mms) 50.7 Grams/Mmd + air load mass

Suspension compliance (Cms) 432.6 µM/N/micro-Meters per Newton

Force factor (Bl) 4.781 Tm/Tesla-Meters

Sensitivity (SPLref) 87.4 dB/reference 8Ω/2.83Vrms

Thanks

Click to read more...

 

[Immacomputer 10+ year member]

An infinitely large one. That sub screams dipole or open baffle setup though.

What are your goals or plans for this driver? I'm also curious as to what it is too.

 

[_PuNiShEr_ 10+ year member]

An infinitely large one. That sub screams dipole or open baffle setup though.
What are your goals or plans for this driver? I'm also curious as to what it is too.

Just some cheapo subs i found. That is pretty much what i thought about the box... what would happen if i put it in a small box? Be really peaky around 70-100hz??

http://www.sychosound.com/sychosoundwoofers/manicwoofers.html

 

[denim 5,000+ posts]

Holy QTS!

 

[Immacomputer 10+ year member]

Just some cheapo subs i found. That is pretty much what i thought about the box... what would happen if i put it in a small box? Be really peaky around 70-100hz??
http://www.sychosound.com/sychosoundwoofers/manicwoofers.html

Pretty much. Very high Q woofers are going to be peaky which is why they're commonly used for open baffle designs. That way, you can utilize the high Q to deliver a little more low end that you would lose due to the baffle being too small.

Those are not something I would ever run in a car.

 

[_PuNiShEr_ 10+ year member]

Thanks for the heads up. Im looking for a pair of shallow 10's or maybe 8's around 4.5" or so deep. I have a sony XM-DS1600P5 that I plan on using to run them. Im thinking 2 10's or 4 8's i have about 1.6ft^3 to work with. I also need some component speakers. Im selling off a bunch of equipment i have laying around and that is the money i get to use to buy my new stuff. Im thinking i will have aboult $150 for 4 speakers and my subs. Any idea on some cheap subs. I really wish i would have gotten in on the ED $5 subs.

 

[Immacomputer 10+ year member]

The $5 eDs don't really like small sealed enclosures though. I put a pair of them in 5 cubes tuned to 25hz and they sounded great in that though!

 

[_PuNiShEr_ 10+ year member]

PowerBass PB104d

Fs - 35 Hz

Vas - 45.6 liters

Qts - .68

Splo - 88.7

Dual 4 ohm

150 watts RMS, 250 peak

Not sure of their Mounting Depth

How would 2 of these do in 1.6... i come up with a Qtc of 1.2 I have way more power than i need for them though.

I know the higher the Qtc is the peaker the box is. But can one really tell the difference between say a Qtc of 1 and a Qtc of 1.2???