old dude Posted June 12, 2012 Report Share Posted June 12, 2012 I spent a weekend testing freg, amps, volts, imp rise, batteries and writing everything down. I have done this a few times before but my setup changes from time to time and I have to do it again. So here is what I am curious about. Two level 5s one of the two is right next to the port it is a ssnw box. Both amps set to 100 volts then I hook up the wires to the subs and test imp rise to each sub. Sub closest to the port is going to be different due to less box pressure I know but how do I adjust or what can I do to improve the situation. I have around 11,000 watts of clean power from the amps but can only use around 6,500 watts due to the big difference in backpressure on the two subs. two 18” level 5s I have the box apart right now and making changes so this would be a good time to try something if anybody has any ideas. Last test I did had me at 155.7 db, freg 46hz, 6,500 watts with 1 and a half times rise. Quote mobile chornobyl Link to comment Share on other sites More sharing options...
old dude Posted June 12, 2012 Author Report Share Posted June 12, 2012 I spent a weekend testing freg, amps, volts, imp rise, batteries and writing everything down. I have done this a few times before but my setup changes from time to time and I have to do it again. So here is what I am curious about. Two level 5s one of the two is right next to the port it is a ssnw box. Both amps set to 100 volts then I hook up the wires to the subs and test imp rise to each sub. Sub closest to the port is going to be different due to less box pressure I know but how do I adjust or what can I do to improve the situation. I have around 11,000 watts of clean power from the amps but can only use around 6,500 watts due to the big difference in backpressure on the two subs. two 18” level 5s I have the box apart right now and making changes so this would be a good time to try something if anybody has any ideas. Last test I did had me at 155.7 db, freg 46hz, 6,500 watts with 1 and a half times rise. this is an old pic of the box i am working with subs are now much closer and port area is much larger. Quote mobile chornobyl Link to comment Share on other sites More sharing options...
CJ18 Posted June 12, 2012 Report Share Posted June 12, 2012 Strap the amps if you can. Quote Link to comment Share on other sites More sharing options...
matt402 Posted June 13, 2012 Report Share Posted June 13, 2012 have u tried a 45 behind the pass side sub? Quote Link to comment Share on other sites More sharing options...
White Lightning Posted June 13, 2012 Report Share Posted June 13, 2012 With that much power, why are you running at such a low frequiency ?? Shouldn't you be tuned closer to 65 htz ?? Quote Kenwood / HELIX / Linear Power (For The Love Of Music) / Brutal Sounds / OverKill Electric Co Questions About Sound Quality ?? Try Here ... Sound Quality, What does it REALLY mean ?? SMD SOTM Winner "White Lightning" 1997 GMT400 Chevy Silverado "The Green Dickle" 1994 GMT400 Chevy "Phantom Dually" Randal's 2007 Chevy Avalanche (we haven't named this one yet) Dylan's "Brutal" 17 Chevy Cruze RS Hatch Link to comment Share on other sites More sharing options...
old dude Posted June 14, 2012 Author Report Share Posted June 14, 2012 With that much power, why are you running at such a low frequiency ?? Shouldn't you be tuned closer to 65 htz ?? thanks to everyone for the input. i am shooting for around 59 hz with my new box which i am just finishing. 59 hz should help with some of the cancellation issues. 59 hz is the limit i think this year for ssnw. Quote mobile chornobyl Link to comment Share on other sites More sharing options...
WCA Rusty Posted June 14, 2012 Report Share Posted June 14, 2012 freq for ss1-2 is 80 hz for the 2012 season anytime you have a box like that loading is going to be diffrent between the 2 subs, i did NW for some time Quote DC AUDIO Phone Number 1(855)SPL-DBZZ Built by Competitors, for Competitors. Link to comment Share on other sites More sharing options...
old dude Posted June 15, 2012 Author Report Share Posted June 15, 2012 freq for ss1-2 is 80 hz for the 2012 season anytime you have a box like that loading is going to be diffrent between the 2 subs, i did NW for some time i know you did. want to share any tips ? Quote mobile chornobyl Link to comment Share on other sites More sharing options...
old dude Posted June 15, 2012 Author Report Share Posted June 15, 2012 this is where i am at with the new box. there is still a lot of rounding to do on the port. the left side of the port is squared to fit some sort of loading wall that i am trying. got my wires tucked up out of the way. Quote mobile chornobyl Link to comment Share on other sites More sharing options...
old dude Posted June 22, 2012 Author Report Share Posted June 22, 2012 update on loading and freg changes to this box 156.29 @51hz box is still pretty rough though. i am still only using about 8k out of the 12k i have. Quote mobile chornobyl Link to comment Share on other sites More sharing options...
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