sstalder5 Posted December 5, 2010 Report Share Posted December 5, 2010 Hi everyone! First off, I'm Sam, I'm new here, but not really a noob to car audio or forums. Now, down to business. I'm building a new box for my subs to try and eliminate some dead space in my trunk behind and on each side of my current rectangular box. I've built a few boxes before so I'm familiar with some of the building calculators available and I don't need help with dimensions or the building process. What I do need help with is picking a frequency to tune the box to. I've heard that 35hz is the best SPL tuning. Will this destroy the SQ? I'd like to find a frequency that's the best of both worlds. The box will be a wedge shape slot ported box, and I can play around with the exact dimensions to get the right tuning. The subs are 2 Polk Audio MM1240svc running 750rms each at 4 ohms. 2002 Subaru Outback Alpine CDM-9821 Alpine KTP-445 4 x Alpine Type R 6.5s 2 x Polk Audio MM 12's Quantum Audio qsa1500D Link to comment Share on other sites More sharing options...
Jbabycsx Posted December 5, 2010 Report Share Posted December 5, 2010 Hi everyone! First off, I'm Sam, I'm new here, but not really a noob to car audio or forums. Now, down to business. I'm building a new box for my subs to try and eliminate some dead space in my trunk behind and on each side of my current rectangular box. I've built a few boxes before so I'm familiar with some of the building calculators available and I don't need help with dimensions or the building process. What I do need help with is picking a frequency to tune the box to. I've heard that 35hz is the best SPL tuning. Will this destroy the SQ? I'd like to find a frequency that's the best of both worlds. The box will be a wedge shape slot ported box, and I can play around with the exact dimensions to get the right tuning. The subs are 2 Polk Audio MM1240svc running 750rms each at 4 ohms. There is no "best" number to tune to. It depends on the vehicle cabin and what you intend to do with the system. I dont think 35hz is high enough to harm SQ. What vehicle is this going into? Maybe somebody with the same car can chime in. 2000 GMC Sonoma AQ20 FTMFW! 4 DC XL 15's Cadence ZRS-C9 Infiniti Kappa 3.5's and 6x8's Bravox 6.5 components Link to comment Share on other sites More sharing options...
hdorre Posted December 5, 2010 Report Share Posted December 5, 2010 plz search On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
sstalder5 Posted December 5, 2010 Author Report Share Posted December 5, 2010 There is no "best" number to tune to. It depends on the vehicle cabin and what you intend to do with the system. I dont think 35hz is high enough to harm SQ. What vehicle is this going into? Maybe somebody with the same car can chime in. Car is a 2002 Subaru Outback. I'd like to keep some sound quality, while still having plenty of volume to play with 2002 Subaru Outback Alpine CDM-9821 Alpine KTP-445 4 x Alpine Type R 6.5s 2 x Polk Audio MM 12's Quantum Audio qsa1500D Link to comment Share on other sites More sharing options...
Jbabycsx Posted December 5, 2010 Report Share Posted December 5, 2010 I would say that 35 would be fine for what you want. Are you planning on doing the subs up and port back or what? 2000 GMC Sonoma AQ20 FTMFW! 4 DC XL 15's Cadence ZRS-C9 Infiniti Kappa 3.5's and 6x8's Bravox 6.5 components Link to comment Share on other sites More sharing options...
TeamHT Posted December 5, 2010 Report Share Posted December 5, 2010 110hz is the best for SPL and 2hz is best for lows Tell me...does this smell like chloroform to you? Link to comment Share on other sites More sharing options...
hdorre Posted December 5, 2010 Report Share Posted December 5, 2010 110hz is the best for SPL and 2hz is best for lows hahah OP, what type of music do you listen to? 35hz is a good median On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
sstalder5 Posted December 5, 2010 Author Report Share Posted December 5, 2010 I would say that 35 would be fine for what you want. Are you planning on doing the subs up and port back or what? Port is definitely facing back. I kind of want to have the subs downward firing so they're out of the way and protected, with the amp mounted on top. But I think theyre just too pretty to do that 2002 Subaru Outback Alpine CDM-9821 Alpine KTP-445 4 x Alpine Type R 6.5s 2 x Polk Audio MM 12's Quantum Audio qsa1500D Link to comment Share on other sites More sharing options...
Jbabycsx Posted December 5, 2010 Report Share Posted December 5, 2010 I would say that 35 would be fine for what you want. Are you planning on doing the subs up and port back or what? Port is definitely facing back. I kind of want to have the subs downward firing so they're out of the way and protected, with the amp mounted on top. But I think theyre just too pretty to do that Yeah I dont think I would mount them down being the car is sort of a hatchback/wagon. 2000 GMC Sonoma AQ20 FTMFW! 4 DC XL 15's Cadence ZRS-C9 Infiniti Kappa 3.5's and 6x8's Bravox 6.5 components Link to comment Share on other sites More sharing options...
sstalder5 Posted December 5, 2010 Author Report Share Posted December 5, 2010 Yeah I dont think I would mount them down being the car is sort of a hatchback/wagon. Why is that? 2002 Subaru Outback Alpine CDM-9821 Alpine KTP-445 4 x Alpine Type R 6.5s 2 x Polk Audio MM 12's Quantum Audio qsa1500D Link to comment Share on other sites More sharing options...
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