GNX 124 box plan????

thoffmann · 10-04-2002, 06:30 AM

Has anybody used the GNX124 in a bandpass??? I don't have monster power but I want to feel the bass like I had 1000 watts going to them. I have 2 GNX124's and a 400 watt amp to push them. Ideas anybody???
Thanks

Kim · 10-04-2002, 02:56 PM

Here is a dual GNX124 iso push pull band pass.

Thanks,
Kim

thoffmann · 10-04-2002, 03:07 PM

I am unable to load the attachment you sent. Something about my graphics conversion filter??? is there a web address that I can go to??? or could you e-mail me the info in a different form???? I would really like to see this box design, as you have my full attention
Thanks
thoffmann

Kim · 10-04-2002, 03:11 PM

This is a "Microsoft Word" document. Option # 2, send me a fax number and I will send you the plans.

Thanks,
Kim

Kim · 10-04-2002, 03:27 PM

The sealed chamber # 1 internal volume is .95 cubic feet. Chamber # 2 ( the vented one ) has a internal volume of 1.5 cubic feet. Chamber 2 is tuned with ( 2 ) 4 inch inner diameter ports that are 12 inches in length.
The external dimension are using 3/4 inch MDF are ;
16" high x 27 3/8" wide x 16" deep. The drivers will be mounted face to face separated by the dividing panel ( need long screws for this ) and the driver in chamber 2 will be wired out of phase.

Kim

thoffmann · 10-17-2002, 04:36 PM

Would it be possible to have 1 six inch port instead of 2 4 inch ports? If so how long would the 6 inch port need to be???
Thanks
thoffmann

Kim · 10-17-2002, 04:49 PM

If you were to use a 6 inch inner diameter port with a lehgth of 12 inches, then this will tune the enclosure to 54 Hertz and the vent air velocity will be a little lower. At 150 Watts the vent air velocity at the tuning frequency is less than 9 mm a second.
The two 4 inch diameter ports, 12 inches in length will tune the enclosure to 52.9 Hertz and the vent air velocity is raised only by 1 mm a second to a level of 10 mm a second with a 150 Watts applied at this is at the tuning frequency. Just make sure to round over any rough edges on the port tube to minimize turbulence.

Thanks,
Kim

PoweredByDodge · 09-06-2005, 02:11 AM

Quote:

Originally Posted by Kim

then this will tune the enclosure to 54 Hertz and the vent air velocity will be a little lower. ...
The two 4 inch diameter ports, 12 inches in length will tune the enclosure to 52.9 Hertz

anytime anybody bitches about current model polk stuff - they should be shot in the foot and then made to read the above post and realize the error of their ways.

"we've come a long way baby".

the new DB12 slot port box by polk plays (on paper) down to 27 hertz - even if you play devil's advocate and throw a little fudge in there - call it 30 hertz - you're still in "happy bass land" - still in kicking ass territory... a 50-something hertz resonant box frequency for the above mentioned GNX's is utterly sickening.

why am i reading old posts? i dunno - its 1:15 in the morning and i'm tired.

hellohello · 09-06-2005, 08:27 AM

....memories...

10-04-2002, 06:30 AM	#1
thoffmann Polkie Member Sales Rating: (0) Join Date: Oct 2002 Posts: 3	GNX 124 box plan???? Has anybody used the GNX124 in a bandpass??? I don't have monster power but I want to feel the bass like I had 1000 watts going to them. I have 2 GNX124's and a 400 watt amp to push them. Ideas anybody??? Thanks

10-04-2002, 03:07 PM	#3
thoffmann Polkie Member Sales Rating: (0) Join Date: Oct 2002 Posts: 3	Attn: Kim I am unable to load the attachment you sent. Something about my graphics conversion filter??? is there a web address that I can go to??? or could you e-mail me the info in a different form???? I would really like to see this box design, as you have my full attention Thanks thoffmann

10-04-2002, 03:11 PM	#4
Kim Polk Customer Service Member Sales Rating: (0) Join Date: Jul 2001 Location: Polk Audio Posts: 617	This is a "Microsoft Word" document. Option # 2, send me a fax number and I will send you the plans. Thanks, Kim

10-04-2002, 03:27 PM	#5
Kim Polk Customer Service Member Sales Rating: (0) Join Date: Jul 2001 Location: Polk Audio Posts: 617	The sealed chamber # 1 internal volume is .95 cubic feet. Chamber # 2 ( the vented one ) has a internal volume of 1.5 cubic feet. Chamber 2 is tuned with ( 2 ) 4 inch inner diameter ports that are 12 inches in length. The external dimension are using 3/4 inch MDF are ; 16" high x 27 3/8" wide x 16" deep. The drivers will be mounted face to face separated by the dividing panel ( need long screws for this ) and the driver in chamber 2 will be wired out of phase. Kim

10-17-2002, 04:36 PM	#6
thoffmann Polkie Member Sales Rating: (0) Join Date: Oct 2002 Posts: 3	Would it be possible to have 1 six inch port instead of 2 4 inch ports? If so how long would the 6 inch port need to be??? Thanks thoffmann

10-17-2002, 04:49 PM	#7
Kim Polk Customer Service Member Sales Rating: (0) Join Date: Jul 2001 Location: Polk Audio Posts: 617	If you were to use a 6 inch inner diameter port with a lehgth of 12 inches, then this will tune the enclosure to 54 Hertz and the vent air velocity will be a little lower. At 150 Watts the vent air velocity at the tuning frequency is less than 9 mm a second. The two 4 inch diameter ports, 12 inches in length will tune the enclosure to 52.9 Hertz and the vent air velocity is raised only by 1 mm a second to a level of 10 mm a second with a 150 Watts applied at this is at the tuning frequency. Just make sure to round over any rough edges on the port tube to minimize turbulence. Thanks, Kim

09-06-2005, 08:27 AM	#9
hellohello Polkateer Member Sales Rating: (0) Join Date: Oct 2003 Posts: 459	....memories...

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)