Thanks in advance for any/all advice.
Getting back into this after yrs. and I saw the thread on here about these cheap 8" drivers that are decent considering the price point and thought it'd be a fun project in the coming month or two.
Model GBW801
Fo (Hz) 46
Re (Ohms) 3.2
Qts 0.406
Qes 0.457
Qms 3.638
Cms (u M/N) 149.822
Vas (Ltr) 13.762
Mms (g) 44.7
Mmd (g) 42.4
No (%) 0.51
SPL (dB-1W/1M) 88
BL (TxM) 9.5
Krm (uOhms) 729.1
Erm 1.024
Kxm (mH) 26.7
Frequency Response (Hz) 45Hz~2KHz
Voice Coil (Diameter) 1.5"
Magnet Weight 32.2oz
Power Rating (RMS) 200Watts
Power Rating (Peak) 400Watts
They'll be going in a 2006 Avalon trunk. My HU is a Pioneer MVH-S600BS. I'm going to run them off of a Pioneer 9601 at 1ohm.
Here's what I've come up with from my research so far, please point out where I'm screwing up and let me know what changes I need to make.
From the thread about these subs on here I saw one of the guys say they modeled well in a .75 ported enclosure. So I'm designing around a 3ft^3 slot ported enclosure.
http://www.caraudio.com/forums/subwoofers/636437-so-i-just-ordered-4-these.html
I have 39" of width, 16" of height and maybe up to 15" of depth. I need to mock up a cardboard replica and test fit. I need to be able to remove the enclosure for family vacations a few times a year.
Using THIS port area calculator I've come up with needing about 51 in^2.
Based off a height of 14.5" (internal height of enclosure) my port width will be 3.5"(51/14.5+3.5).
Then using WinISD with 3 ft^3 @36 Hz I get a port length of 29".
Using 14.5"x3.5"x29" (.85 ft^3) + port material volume (.10 ft^3) + speaker vol (approx. .02x4) I get 1.03 ft^3 of volume.
So I need a gross volume of 4 ft^3. More algebra. Using my two known max size restraints of int. size 37.5x14.5 and needing 6912ft^3 I get a depth of 12.7"
Then I used THIS site to get a cut sheet.
At 36 Hz I calculate the SS filter/HPF should be set at 26-27 Hz.
How does that look? Is 36 Hz in the trunk of an Avalon w/these subs OK? I'm looking for good sounding bass not SPL, as much as I can expect from cheap subs. I listen to everything from Acoustic folky stuff to punk to metal to old school rap and bass music. I plan to run them rear facing. I have a ski pass through, should I center the port facing front to fire through the pass through?
This is mostly just to get me started in the hobby again w/the idea of putting in a couple of nice 10's or 12's if they'll fit, in the future.
Again thanks for taking the time to look.
Getting back into this after yrs. and I saw the thread on here about these cheap 8" drivers that are decent considering the price point and thought it'd be a fun project in the coming month or two.
Model GBW801
Fo (Hz) 46
Re (Ohms) 3.2
Qts 0.406
Qes 0.457
Qms 3.638
Cms (u M/N) 149.822
Vas (Ltr) 13.762
Mms (g) 44.7
Mmd (g) 42.4
No (%) 0.51
SPL (dB-1W/1M) 88
BL (TxM) 9.5
Krm (uOhms) 729.1
Erm 1.024
Kxm (mH) 26.7
Frequency Response (Hz) 45Hz~2KHz
Voice Coil (Diameter) 1.5"
Magnet Weight 32.2oz
Power Rating (RMS) 200Watts
Power Rating (Peak) 400Watts
They'll be going in a 2006 Avalon trunk. My HU is a Pioneer MVH-S600BS. I'm going to run them off of a Pioneer 9601 at 1ohm.
Here's what I've come up with from my research so far, please point out where I'm screwing up and let me know what changes I need to make.
From the thread about these subs on here I saw one of the guys say they modeled well in a .75 ported enclosure. So I'm designing around a 3ft^3 slot ported enclosure.
http://www.caraudio.com/forums/subwoofers/636437-so-i-just-ordered-4-these.html
I have 39" of width, 16" of height and maybe up to 15" of depth. I need to mock up a cardboard replica and test fit. I need to be able to remove the enclosure for family vacations a few times a year.
Using THIS port area calculator I've come up with needing about 51 in^2.
Based off a height of 14.5" (internal height of enclosure) my port width will be 3.5"(51/14.5+3.5).
Then using WinISD with 3 ft^3 @36 Hz I get a port length of 29".
Using 14.5"x3.5"x29" (.85 ft^3) + port material volume (.10 ft^3) + speaker vol (approx. .02x4) I get 1.03 ft^3 of volume.
So I need a gross volume of 4 ft^3. More algebra. Using my two known max size restraints of int. size 37.5x14.5 and needing 6912ft^3 I get a depth of 12.7"
Then I used THIS site to get a cut sheet.
At 36 Hz I calculate the SS filter/HPF should be set at 26-27 Hz.
How does that look? Is 36 Hz in the trunk of an Avalon w/these subs OK? I'm looking for good sounding bass not SPL, as much as I can expect from cheap subs. I listen to everything from Acoustic folky stuff to punk to metal to old school rap and bass music. I plan to run them rear facing. I have a ski pass through, should I center the port facing front to fire through the pass through?
This is mostly just to get me started in the hobby again w/the idea of putting in a couple of nice 10's or 12's if they'll fit, in the future.
Again thanks for taking the time to look.
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