while i didn't plug the numbers into Unibox, the graph looks as it should for a ported enclosure. I think the "dip" you are referring to is the one of the graph labeled "SPL of the Driver"...you want to look at SPLtot
-
Our native mobile app has a new name: Fora Communities. Learn more.
Havoc 18" modeling
The response looks good except that nasty dip. Did I do this right?
T/S:
Znom - Dual 2 ohm BL - 21.4 n/a Cutout diam - 16 3/4
RE - Dual 1.5 ohms Sd - 1210 cm2 Outer diam - 18 5/8
FS - 22.9 Hz Mms - 360 g Mounting Depth - 10 1/2
Vas - 280 L Spl - 91.8 dB 1W/1M Weight - 40 pounds
Qms - 4.962 Rms - 1500 W Voice Coil Diam - 3 inch aluminum
Qes - .334 Xmax - 25 mm one-way Voice Coil - Dual 2 ohm
Qts - .318 Price - $350 Cone - Paper/Kevlar fibers
Le - 1.2 mH
Home Audio ~ 8-10 Cubic Feet / 18-20 Hz tuning
Car Audio ~ 6 Cubic Feet / 28-32 Hz tuning
![]()
T/S:
Znom - Dual 2 ohm BL - 21.4 n/a Cutout diam - 16 3/4
RE - Dual 1.5 ohms Sd - 1210 cm2 Outer diam - 18 5/8
FS - 22.9 Hz Mms - 360 g Mounting Depth - 10 1/2
Vas - 280 L Spl - 91.8 dB 1W/1M Weight - 40 pounds
Qms - 4.962 Rms - 1500 W Voice Coil Diam - 3 inch aluminum
Qes - .334 Xmax - 25 mm one-way Voice Coil - Dual 2 ohm
Qts - .318 Price - $350 Cone - Paper/Kevlar fibers
Le - 1.2 mH
Home Audio ~ 8-10 Cubic Feet / 18-20 Hz tuning
Car Audio ~ 6 Cubic Feet / 28-32 Hz tuning
1 - 15 of 15 Posts
Strange, the upper right reports an Fb of 20Hz, but the graph shows it to be around 32Hz. Did you update the graph after you entered your parameters?
Not sure what dip you mean.
Quote:
Originally Posted by vitod /forum/post/0
The response looks good except that nasty dip. Did I do this right?
T/S:
Znom - Dual 2 ohm BL - 21.4 n/a Cutout diam - 16 3/4
RE - Dual 1.5 ohms Sd - 1210 cm2 Outer diam - 18 5/8
FS - 22.9 Hz Mms - 360 g Mounting Depth - 10 1/2
Vas - 280 L Spl - 91.8 dB 1W/1M Weight - 40 pounds
Qms - 4.962 Rms - 1500 W Voice Coil Diam - 3 inch aluminum
Qes - .334 Xmax - 25 mm one-way Voice Coil - Dual 2 ohm
Qts - .318 Price - $350 Cone - Paper/Kevlar fibers
Le - 1.2 mH
Home Audio ~ 8-10 Cubic Feet / 18-20 Hz tuning
Car Audio ~ 6 Cubic Feet / 28-32 Hz tuning
![]()
Strange, the upper right reports an Fb of 20Hz, but the graph shows it to be around 32Hz. Did you update the graph after you entered your parameters?
Not sure what dip you mean.
I may have done it wrong. Can you do the same and let's see what you come up with?
The dip is "SPL produced by the driver".
I'm still learning this modeling stuff.
![]()
I may have done it wrong. Can you do the same and let's see what you come up with?
The dip is "SPL produced by the driver".
I'm still learning this modeling stuff.
well here is what i came up with for a 260l enclosure with two 6" ports....
Thanks for clarifying that Rich. I get it now.
![]()
Thanks for clarifying that Rich. I get it now.
I would tune it much lower, 16 Hz should do the trick...
Quote:
Originally Posted by PLincoln /forum/post/0
well here is what i came up with for a 260l enclosure with two 6" ports....
I wold think about shrinking the enclosure a bit to get rid of the hump at 26hz
I would tune it much lower, 16 Hz should do the trick...
6" is what in cm?
![]()
1 - 15 of 15 Posts
