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View Full Version : ts-w305c information - spl box recomendation.



DaviX
08-21-2003, 12:33 PM
hey guys. i bought this sub ts-w305c.

i got this info about it.
TS-W305C / TS-W125C
T/S PARAMETERS
Dia. 12 in.
Z 4.0 ohm
Re 3.0 ohm
Zmax TBD
fs 32.7 Hz
Qms 15.10
Qes 0.348
Qts 0.340
Vas 1.817 ft3
51.449 Liters
Sd 0.0460 m2
0.495 ft2
BL 15.988 Tm
Cms 1.717x10-4 m/N
Mms 138.20 g
Rms 1.875 Ns/m
Mg. Wt 2,350 g
83 oz
VC dia. 2.25 in.
56 mm
Hvc 1.12 in.
28.4 mm
Hag 0.39 in.
10 mm
Xmax 0.36 in.
9.2 mm
Levc 2.107 mH
Displ. 0.083 ft3
2.36 Liters
SPL 89 dB/W
Power (nom) 400 Watts
Power (max) 800 Watts

RECOMMENDED ENCLOSURES

Sealed - 1.5 ft^3
Ported - 1.65 ft^3 (3" diameter, 6" long)
4th order bandpass - 0.9 ft^3 sealed, 0.9 ft^3 ported (3" diameter, 5" long


now i wonder, what would be best for SPL? and what the hell is 4th order bandpass? is it spl or sq?

tnx!

DaviX
08-21-2003, 05:11 PM
4th Order Bandpass is between Ported and Sealed in terms of output ...

I'd go with an enclosure as large as possible tuned to 45 Hz for all out SPL ...

If you want daily-driver SPL (And the ability to play most songs without damaging the subwoofer), large as possible tuned to 30 Hz ...


what then will the size of the box will be(liters)? (sealed?)


tnx!

DaviX
08-21-2003, 05:23 PM
What are the maximum dimensions of your trunk ?

You want to go ported, by the way ...

So is this going to be a competition box or is this going to be a daily driver box ?


daily driver with casual entries on "Amatuer" in a spl comp in israel.

DaviX
08-21-2003, 06:05 PM
Ported enclosure
Largest volume possible
As much port area as possible
Tuning frequency around 40 Hz

i am sorry, i am quite new to this, can you tell me how does a ported box looks like?

is it like this

+------------+
|----+ |
| | |
| | | (spc chars are scrambeld)
+------+-----+
^^^
sub goes here


can some one post the way i should build the box?

considering i have all of the trunk space for it its a hyundai lantra 96.

DaviX
08-21-2003, 06:12 PM
Basically, it's a rectangular box with the sub on one side and the slot port on the other side against one of the walls of the enclosure

Port exit and subwoofer should be located on the same side ...

ok, i think im starting to understand, might you have a plan of a box as this?

DaviX
08-21-2003, 06:19 PM
Like this ...
the square is a hole, and it should be only a hole in the box?

or should it be peered inside?
how does it look in the inside cut.

(btw, tnx man!!)

DaviX
08-21-2003, 06:24 PM
http://forums.caraudio.com/vb/attachment.php?attachmentid=1653


OK! got it! so now, how do i calculate the port to cut the frequency on 40Hz?

DaviX
08-21-2003, 07:01 PM
Tuning frequency is dependent on net internal volume, port area, and port length ...

http://www.jlaudio.com/tutorials/ports/index.html

(1728 cubic inches in 1 cubic foot)


great, now for the lazyness, is there any freeware or software that can help me calculate all this?

DaviX
08-21-2003, 07:32 PM
great!

tnx i'll get on calculating right now (2am)
since i want to start the building tommorow.

DaviX
08-21-2003, 08:21 PM
i think i got the hang of it though i have only one problem, the isdpro lets me make peers, how can i tell her i dont want peers, i want a band pass box?

or is it the same, and i am a freak?!

DaviX
08-22-2003, 02:12 AM
i quite figure out all of this by myself - tnk you.

what i wanted to ask is if abandpass is actually a peered box only its peered in the other side.


and what about calculation of wood plates, can it do it?

jbl_marshall21
08-22-2003, 05:40 PM
i quite figure out all of this by myself - tnk you.

what i wanted to ask is if abandpass is actually a peered box only its peered in the other side.


and what about calculation of wood plates, can it do it?

i think u mean ported instead of peered.

yes a bandpass box is ported both sides of the box, that is 6th order bandpass..
4th order is ported on one side.

use 3/4 mdf (medium density fiberboard) if its available.

DaviX
08-22-2003, 05:54 PM
tnx guys, i think i'll go for ported - not band pass. since band pass seems to be hard.

DaviX
08-24-2003, 07:43 AM
here is the box i am eventualy building
check it out

Vented(port) 3.178 ft^3 (90Liter) box
tuned to 35Hz
a square port of 2.792*2.792*3.031
height width depth

the box will be these sizes
height - 22'
width - 26.4'
depth - 14'

mdf thickness 3/4'
speaker displacement 0.5 ft^3
gross - 3.192
net - 3.178.

DaviX
08-25-2003, 03:52 AM
Now, just to make sure, you did plug this into WinISD Pro and checked the Rear Port - Air Velocity graph, right ? You want peaks to be under 30 m/s, if possible ...

I get a peak of 93.261 m/s @ 34.23 Hz with 400 watts ...

You definitely need a larger port, unless you're running less than 41 RMS to it ...


really?
even with this big box?

narf, i got it to a peak of 28.15ms in 35.05hz.

port size (wood size not calculated yet.)
10.20*14.00cm
28.88cm length