GNX 124 box plan????

[thoffmann]

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]

Here is a dual GNX124 iso push pull band pass.


Thanks,
Kim

[thoffmann]

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]

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

Thanks,
Kim

[Kim]

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]

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

:confused:

[Kim]

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]

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]

....memories...