I must be a WinISD Pro dumbie

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Nemo128

Nemo128

Audioholic Field Marshall
I can't for the life of me model this sub in WinISD Pro. I modeled it in the non-Pro, but it seems those numbers are subject to serious speculation.

I'm trying to get an idea of what the Earthquake SWS-10 and SWS-12 could do in a two sub config with a vented box of 2'x5'x5" (yes yes, I know...) or a single sub config with a 2'x2'x5" (I KNOW!) vented box. Still highly considering my under-couch DYI build.

Any thoughts on this?
 
highfigh

highfigh

Seriously, I have no life.
Nemo128 said:
I can't for the life of me model this sub in WinISD Pro. I modeled it in the non-Pro, but it seems those numbers are subject to serious speculation.

I'm trying to get an idea of what the Earthquake SWS-10 and SWS-12 could do in a two sub config with a vented box of 2'x5'x5" (yes yes, I know...) or a single sub config with a 2'x2'x5" (I KNOW!) vented box. Still highly considering my under-couch DYI build.

Any thoughts on this?
Click to expand...
The back wave can bounce off of a surface and cause the speaker cone to oscillate wildly in a box that thin, when using a larger cone. If you can break up the reflection, do it but with the magnet that close to the back wall, it will be hard.
 
TLS Guy

TLS Guy

Audioholic Jedi
Nemo128 said:
I can't for the life of me model this sub in WinISD Pro. I modeled it in the non-Pro, but it seems those numbers are subject to serious speculation.

I'm trying to get an idea of what the Earthquake SWS-10 and SWS-12 could do in a two sub config with a vented box of 2'x5'x5" (yes yes, I know...) or a single sub config with a 2'x2'x5" (I KNOW!) vented box. Still highly considering my under-couch DYI build.

Any thoughts on this?
Click to expand...
The 10 inch driver does not model well vented. The 12 models very well vented, however it takes a big enclosure.

Name: SWS12
Type: Standard one-way driver
Company: Earthquake Sound
No. of Drivers = 1
Fs = 24 Hz
Qms = 3.56
Vas = 149.6 liters
Cms = 0.375 mm/N
Mms = 117.3 g
Rms = 4.967 kg/s
Xmax = 31 mm
Xmech = 42 mm
P-Dia = 259.8 mm
Sd = 530 sq.cm
P-Vd = 1.643 liters
Qes = 0.515
Re = 3.7 ohms
Z = 4 ohms
BL = 10.6 Tm
Pe = 600 watts
Qts = 0.45
no = 0.387 %
1-W SPL = 88.03 dB
2.83-V SPL = 89.4 dB
-----------------------------------------
Box Properties
Name:
Type: Vented Box
Shape: Prism, square (optimum)
Vb = 6.236 cu.ft
Fb = 20.33 Hz
QL = 5.862
F3 = 21.73 Hz
Fill = minimal
No. of Vents = 1
Vent shape = rectangle
Vent ends = one flared
Hv = 3 in
Wv = 10 in
Lv = 28.56 in

There is no ripple and it can provide an spl of 116 db. The price of entry is a 6.2 cu.ft box for a single driver double that for two.

Vent velocity with that port is 18 m/sec.

If you are interested I can publish the full design to my website.
 
lsiberian

lsiberian

Audioholic Overlord
Nemo128 said:
I can't for the life of me model this sub in WinISD Pro. I modeled it in the non-Pro, but it seems those numbers are subject to serious speculation.

I'm trying to get an idea of what the Earthquake SWS-10 and SWS-12 could do in a two sub config with a vented box of 2'x5'x5" (yes yes, I know...) or a single sub config with a 2'x2'x5" (I KNOW!) vented box. Still highly considering my under-couch DYI build.

Any thoughts on this?
Click to expand...
For that under couch build I'd try to get TLS Guy or Wmax's help.

But you can use box notes to calculate your internal volume.

You have an internal volume of about 1.6 cuft. I suggest you do a sealed setup if possible.

I'd have to put in the TS parameters to give you a model. If you plan to use an EQ then it's probably doable.
 
Nemo128

Nemo128

Audioholic Field Marshall
adwilk said:
You're a dumbie! :D

I'm kidding... What trouble are you having specifically?
Click to expand...
Totally a dumbie. :) But I'm trying to progress beyond dumbie-hood with the help of all the smart guys here.

highfigh said:
The back wave can bounce off of a surface and cause the speaker cone to oscillate wildly in a box that thin, when using a larger cone. If you can break up the reflection, do it but with the magnet that close to the back wall, it will be hard.
Click to expand...
I'm hoping that at a 3" depth it'll give enough clearance, like the slim build on Parts Express, but with a bigger badder driver.

TLS Guy said:
The 10 inch driver does not model well vented. The 12 models very well vented, however it takes a big enclosure.

Name: SWS12
Type: Standard one-way driver
Company: Earthquake Sound
No. of Drivers = 1
Fs = 24 Hz
Qms = 3.56
Vas = 149.6 liters
Cms = 0.375 mm/N
Mms = 117.3 g
Rms = 4.967 kg/s
Xmax = 31 mm
Xmech = 42 mm
P-Dia = 259.8 mm
Sd = 530 sq.cm
P-Vd = 1.643 liters
Qes = 0.515
Re = 3.7 ohms
Z = 4 ohms
BL = 10.6 Tm
Pe = 600 watts
Qts = 0.45
no = 0.387 %
1-W SPL = 88.03 dB
2.83-V SPL = 89.4 dB
-----------------------------------------
Box Properties
Name:
Type: Vented Box
Shape: Prism, square (optimum)
Vb = 6.236 cu.ft
Fb = 20.33 Hz
QL = 5.862
F3 = 21.73 Hz
Fill = minimal
No. of Vents = 1
Vent shape = rectangle
Vent ends = one flared
Hv = 3 in
Wv = 10 in
Lv = 28.56 in

There is no ripple and it can provide an spl of 116 db. The price of entry is a 6.2 cu.ft box for a single driver double that for two.

Vent velocity with that port is 18 m/sec.

If you are interested I can publish the full design to my website.
Click to expand...
I honestly don't have a good perception of what 116dB will sound or feel like, but I know I don't play very loud. I'm not worried about home-shattering power, just clean accurate output.

Awesome info. This is my under-couch dream, and I got inspired by Parts Express:

http://www.parts-express.com/projectshowcase/indexn.cfm?project=Boogieman

I just don't know what it will sound like and would hate to crack open the wallet without a clue of its capabilties. BUT just now I saw this!!!

http://www.parts-express.com/projectshowcase/indexn.cfm?project=seismicSofa

AND I'M REALLY INTERESTED!!! :eek::D

Thanks a lot for all your time and input, it helps a lot. Once I can say to myself "This is going to work and I'm going to be satisfied", I'll drop the chips on it and make it. I'm just uncomfortable getting started without any clue of the end result.
 
lsiberian

lsiberian

Audioholic Overlord
I the 12" modeled in WinISD pro.

It seems at that size Sealed and Ported are very close so I suggest you just build sealed

it has an f3 of 43 and an f10 of 27.

A max spl of 116db.(a rock concert or small jet take off.

It can get a max of around 100db around 20hz. (a jackhammer at 1 meter)



It seems to have high excursion limits. So you can eq it pretty well I bet.

You might do just 1 driver. for simplicity sake. 2 would only benefit you +3 db

Since you listen at low volumes now. I'd just pick up a single Earghquake 12 and build it in the box.
 
Nemo128

Nemo128

Audioholic Field Marshall
Since I've run a jackhammer, I can easily say that is more than enough for us!!! I do not need jet takeoff level, we live a mile from an airport and jets fly low enough overhead to literally shake the house. :)
 
TLS Guy

TLS Guy

Audioholic Jedi
lsiberian said:
I the 12" modeled in WinISD pro.

It seems at that size Sealed and Ported are very close so I suggest you just build sealed

it has an f3 of 43 and an f10 of 27.

A max spl of 116db.(a rock concert or small jet take off.

It can get a max of around 100db around 20hz. (a jackhammer at 1 meter)



It seems to have high excursion limits. So you can eq it pretty well I bet.

You might do just 1 driver. for simplicity sake. 2 would only benefit you +3 db

Since you listen at low volumes now. I'd just pick up a single Earghquake 12 and build it in the box.
Click to expand...
The small ported box of 1.6 cu.ft has lots of problems and would not be satisfactory. The optimal box sealed is as I posted 6.236 cu. ft. 1.6 cu.ft is optimal for sealed, and has an F3 of 42 Hz, and that driver would tolerate Eq of 12 db per octave below 50 Hz, and still achieve decent spl.
 
Nemo128

Nemo128

Audioholic Field Marshall
TLS, is it possible I can get low (let's say 20-24Hz reproduction) with this idea? I don't expect lots of volume from it, and it'll be directly underneath us.

Just to give you an idea, I don't have seperate subs now. I only use the integrated subs on my Def Tech BP7006 towers, and they hit more than hard enough for us. I never put them very high.

The attractive thing about the Earthquake SWS is its low mounting depth. 3" is perfect for what I'd like to do. If I could go with a 6cu.ft. box, I'd just use a Kappa Perf or JL W6. :)
 
TLS Guy

TLS Guy

Audioholic Jedi
Nemo128 said:
TLS, is it possible I can get low (let's say 20-24Hz reproduction) with this idea? I don't expect lots of volume from it, and it'll be directly underneath us.

Just to give you an idea, I don't have seperate subs now. I only use the integrated subs on my Def Tech BP7006 towers, and they hit more than hard enough for us. I never put them very high.

The attractive thing about the Earthquake SWS is its low mounting depth. 3" is perfect for what I'd like to do. If I could go with a 6cu.ft. box, I'd just use a Kappa Perf or JL W6. :)
Click to expand...
If you build the sealed box, and use Eq you will. If you want a ported sub, then with that driver it needs to be 6.26 cu.ft.
 
Nemo128

Nemo128

Audioholic Field Marshall
TLS Guy said:
If you build the sealed box, and use Eq you will. If you want a ported sub, then with that driver it needs to be 6.26 cu.ft.
Click to expand...
I would build the best one for the purpose. If vented has to be that big, it's no good. I prefer a sealed box honestly, easier to build and I'm more used to those from my car audio days.

As for an Eq, I don't think Behringer A500 and EP1500 have Eq built in, so I assume I'd have to get a whole seperate unit? I guess that'll take the cost up some.

I also have the possibility of using a used 300W or 500W from a Def Tech tower's integrated subs since I can get my hands on them for cheap.

If I can do this, I'm going to replace my speakers with the Mythos line. To answer why, I get nice pricing on Def Tech and they're the best I can get. Plus they have high WAF. :)

This is all good info. If I tell the woman I can build a good enough sub to replace the BP7006 towers, she'll agree to the BP-Mythos change.
 
lsiberian

lsiberian

Audioholic Overlord
Nemo128 said:
TLS, is it possible I can get low (let's say 20-24Hz reproduction) with this idea? I don't expect lots of volume from it, and it'll be directly underneath us.

Just to give you an idea, I don't have seperate subs now. I only use the integrated subs on my Def Tech BP7006 towers, and they hit more than hard enough for us. I never put them very high.

The attractive thing about the Earthquake SWS is its low mounting depth. 3" is perfect for what I'd like to do. If I could go with a 6cu.ft. box, I'd just use a Kappa Perf or JL W6. :)
Click to expand...
With a sealed 1.6cu ft build as I suggested you would need to eq it with a low cost Behrigner Feedback Destroyer( 60 bucks) pair that with an ep2500 and you'd be set on amplification.

I always suggest eqing it based on the in room readings. Which aid the 20 -30 hz frequencies pretty well.

REW is pretty easy to use and being the computer nerd you are I think you could figure it out.

Let us know(show us pictures) If you undertake this build.
 
TLS Guy

TLS Guy

Audioholic Jedi
lsiberian said:
With a sealed 1.6cu ft build as I suggested you would need to eq it with a low cost Behrigner Feedback Destroyer( 60 bucks) pair that with an ep2500 and you'd be set on amplification.

I always suggest eqing it based on the in room readings. Which aid the 20 -30 hz frequencies pretty well.

REW is pretty easy to use and being the computer nerd you are I think you could figure it out.

Let us know(show us pictures) If you undertake this build.
Click to expand...
I agree with that.
 
Nemo128

Nemo128

Audioholic Field Marshall
In case anyone wanted an update:

Right now working a deal to sell my current Def Tech towers and surrounds. If I do, I'm replacing them with Mythos series and this custom sub. If I can't get them sold, this project is dead in the water.

If I do get to do it, I'll be sure to post it in the DYI section with progress and pics. :)
 
lsiberian

lsiberian

Audioholic Overlord
Nemo128 said:
the DYI section
Click to expand...
I think this is certainly prophetic. The Do Yourself In section is a good alternate name. :D

When your audio dreams start at home depot or lowe's you know the hobby has gone off the deep end. Thankfully that deep end is in PDawg's backyard.
 
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