Noel989 Posted November 4, 2014 Report Share Posted November 4, 2014 C-pillar wallIs a C-pillar wall up to the front seats, or back seats? Behind the second row Build Log - http://www.stevemead...-cruiser-el-pt/ Link to comment Share on other sites More sharing options...
alaskanzx5 Posted November 4, 2014 Report Share Posted November 4, 2014 A pillar = front windshield trim B pillar = trim right behind front seats C pillar = trim right behind back seat Don't know how to explain it any other way. t1500bdcp 2 t2d4 15" 1 t600.4 1 t400.2 1 set p1 tweets singer alt, tons of wiring, smd vm-1, 80prs, back seat delete, still in the works, aiming for a 145-147 with the ability to play 25hz up to 50hz. Link to comment Share on other sites More sharing options...
AstoSoup Posted November 4, 2014 Author Report Share Posted November 4, 2014 A pillar = front windshield trim B pillar = trim right behind front seats C pillar = trim right behind back seat Don't know how to explain it any other way. That was perfect, and very informative for such a short post lol. I had it wrong the whole time So a C-pillar wall it is! Should bring my resonant frequency down some and get rid of that horrifying rattle in the back hatch... Head Unit - Clarion VX709 7" DVD Touchscreen Mid/Highs - Front Doors - RF Prime 6.5" component mids. A. Pillars - RF Punch component tweets. B. Pillars - RF Prime component tweets. Rear Doors - RF Punch 5.25" mids. RF Punch 3-way passive X-overs. Mid/Highs Amp - MB Quart Onyx 360.4, 4 channel, 640W RMS. Subs - (2) PowerBass 3XL 15, 1000w RMS, 3" flat wound coil, 562oz motor, 10" spider. Sub Amp - Audiopipe GD6001 @.5ohm, clamped 2825RMS. Box - 9.6 cu^3 net @35Hz, three 6" aero's. Charging - Energizer 120Ah AGM under the hood, MaxLife 75Ah in the rear. Big 3, 140A aftermarket alt. (off brand) Wires - Two JL Audio 2/0ga OFC. runs to rear, 4ga. power/2ga. ground to component amp (OFC), 1/0ga. OFC Knu Konceptz Kolossus Kandy everywhere else. Link to comment Share on other sites More sharing options...
alaskanzx5 Posted November 4, 2014 Report Share Posted November 4, 2014 No problem t1500bdcp 2 t2d4 15" 1 t600.4 1 t400.2 1 set p1 tweets singer alt, tons of wiring, smd vm-1, 80prs, back seat delete, still in the works, aiming for a 145-147 with the ability to play 25hz up to 50hz. Link to comment Share on other sites More sharing options...
Noel989 Posted November 4, 2014 Report Share Posted November 4, 2014 I'm no box expert But before you start messing with a wall (unless you want a wall) I would fix the issues that joe x and bfolko brought Like I said I'm no box expert Maybe ask someone knowledgable If by shrinking cabin space will the resonance frequency lower? Or will it go up? Also how do you know your cars resonance frequency? Box resonance peak? Build Log - http://www.stevemead...-cruiser-el-pt/ Link to comment Share on other sites More sharing options...
Joe X Posted November 4, 2014 Report Share Posted November 4, 2014 A wall on 2 15s will likely be really thin, I'd start with 4 15s for that. Link to comment Share on other sites More sharing options...
Joe X Posted November 4, 2014 Report Share Posted November 4, 2014 For a test, you can try aiming the port sideways, if you are rattling your rear gate it can lose you some port output, some guys with explorers had gotten good results doing that. Link to comment Share on other sites More sharing options...
AstoSoup Posted November 4, 2014 Author Report Share Posted November 4, 2014 I'm no box expert But before you start messing with a wall (unless you want a wall) I would fix the issues that joe x and bfolko brought Like I said I'm no box expert Maybe ask someone knowledgable If by shrinking cabin space will the resonance frequency lower? Or will it go up? Also how do you know your cars resonance frequency? Box resonance peak? A wall on 2 15s will likely be really thin, I'd start with 4 15s for that. For a test, you can try aiming the port sideways, if you are rattling your rear gate it can lose you some port output, some guys with explorers had gotten good results doing that. Those issues were covered. Net volume is a little under 4 cubes (like 3.89), which isn't totally optimal but leaves me at around 33Hz. Plenty of port clearance, more than the minimum recommend. I too am certainly no box expert, but have been told that resonant frequency goes down with lower cabin space. For the resonant frequency, I just asked someone with the same vehicle. Frequency with no box is the same, only changes slightly with a smaller box I heard (again, no expert). I thought two may be a little light for a wall. Four would get me back to a 1ohm load, which is easier when looking for an amp. Two, DC 2k's strapped would be very nice And a friend also recommended to try the port sideways, so I think I will try that when I get out of work. It actually sounds like the bass is going right out the back, especially on the notes that cancel. The window hatch is screwed shut, maybe it is too tight or the seal is off. Will give it all a look when I get home, thanks everyone for the help! Head Unit - Clarion VX709 7" DVD Touchscreen Mid/Highs - Front Doors - RF Prime 6.5" component mids. A. Pillars - RF Punch component tweets. B. Pillars - RF Prime component tweets. Rear Doors - RF Punch 5.25" mids. RF Punch 3-way passive X-overs. Mid/Highs Amp - MB Quart Onyx 360.4, 4 channel, 640W RMS. Subs - (2) PowerBass 3XL 15, 1000w RMS, 3" flat wound coil, 562oz motor, 10" spider. Sub Amp - Audiopipe GD6001 @.5ohm, clamped 2825RMS. Box - 9.6 cu^3 net @35Hz, three 6" aero's. Charging - Energizer 120Ah AGM under the hood, MaxLife 75Ah in the rear. Big 3, 140A aftermarket alt. (off brand) Wires - Two JL Audio 2/0ga OFC. runs to rear, 4ga. power/2ga. ground to component amp (OFC), 1/0ga. OFC Knu Konceptz Kolossus Kandy everywhere else. Link to comment Share on other sites More sharing options...
AstoSoup Posted November 4, 2014 Author Report Share Posted November 4, 2014 I'm no box expert But before you start messing with a wall (unless you want a wall) I would fix the issues that joe x and bfolko brought Like I said I'm no box expert Maybe ask someone knowledgable If by shrinking cabin space will the resonance frequency lower? Or will it go up? Also how do you know your cars resonance frequency? Box resonance peak? A wall on 2 15s will likely be really thin, I'd start with 4 15s for that. For a test, you can try aiming the port sideways, if you are rattling your rear gate it can lose you some port output, some guys with explorers had gotten good results doing that. Those issues were covered. Net volume is a little under 4 cubes (like 3.89), which isn't totally optimal but leaves me at around 33Hz. Plenty of port clearance, more than the minimum recommend. I too am certainly no box expert, but have been told that resonant frequency goes down with lower cabin space. For the resonant frequency, I just asked someone with the same vehicle. Frequency with no box is the same, only changes slightly with a smaller box I heard (again, no expert). I thought two may be a little light for a wall. Four would get me back to a 1ohm load, which is easier when looking for an amp. A DC or Crescendo 4k would be very nice And a friend also recommended to try the port sideways, so I think I will try that when I get out of work. It actually sounds like the bass is going right out the back, especially on the notes that cancel. The window hatch is screwed shut, maybe it is too tight or the seal is off. Will give it all a look when I get home, thanks everyone for the help! Head Unit - Clarion VX709 7" DVD Touchscreen Mid/Highs - Front Doors - RF Prime 6.5" component mids. A. Pillars - RF Punch component tweets. B. Pillars - RF Prime component tweets. Rear Doors - RF Punch 5.25" mids. RF Punch 3-way passive X-overs. Mid/Highs Amp - MB Quart Onyx 360.4, 4 channel, 640W RMS. Subs - (2) PowerBass 3XL 15, 1000w RMS, 3" flat wound coil, 562oz motor, 10" spider. Sub Amp - Audiopipe GD6001 @.5ohm, clamped 2825RMS. Box - 9.6 cu^3 net @35Hz, three 6" aero's. Charging - Energizer 120Ah AGM under the hood, MaxLife 75Ah in the rear. Big 3, 140A aftermarket alt. (off brand) Wires - Two JL Audio 2/0ga OFC. runs to rear, 4ga. power/2ga. ground to component amp (OFC), 1/0ga. OFC Knu Konceptz Kolossus Kandy everywhere else. Link to comment Share on other sites More sharing options...
AstoSoup Posted November 4, 2014 Author Report Share Posted November 4, 2014 Weird, it all came up in grey?^^ Head Unit - Clarion VX709 7" DVD Touchscreen Mid/Highs - Front Doors - RF Prime 6.5" component mids. A. Pillars - RF Punch component tweets. B. Pillars - RF Prime component tweets. Rear Doors - RF Punch 5.25" mids. RF Punch 3-way passive X-overs. Mid/Highs Amp - MB Quart Onyx 360.4, 4 channel, 640W RMS. Subs - (2) PowerBass 3XL 15, 1000w RMS, 3" flat wound coil, 562oz motor, 10" spider. Sub Amp - Audiopipe GD6001 @.5ohm, clamped 2825RMS. Box - 9.6 cu^3 net @35Hz, three 6" aero's. Charging - Energizer 120Ah AGM under the hood, MaxLife 75Ah in the rear. Big 3, 140A aftermarket alt. (off brand) Wires - Two JL Audio 2/0ga OFC. runs to rear, 4ga. power/2ga. ground to component amp (OFC), 1/0ga. OFC Knu Konceptz Kolossus Kandy everywhere else. Link to comment Share on other sites More sharing options...
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