Mobile Chassis Dyno Posted October 14, 2010 Report Posted October 14, 2010 Subs are rated for 600 rms. Amp is rated at 2500 rms. Wire each sub in series for a 8 ohm load. Parallel all 6 subs for a 1.6X ohm load. Does this sound like a good balance between amplifier and subs? How many batteries and what size alternator do I need to feed this amp along with another 50 amps of avaliable power? Thanks in advance. Warm Regards, Dyno Brian 1997 Ford Probe |Sony Head Unit|Alpine V12 AccuClass-D MRD M1000 Amplifier|4 RE AUDIO SRX12D4 12's|Mids and Highs coming soon!| |1998 Mustang GT Twin Turbo|1986 Mustang GT Single Turbo|1996 Mustang Mystic Cobra N20|1995 Mustang Cobra 5,000 miles| 2002 ZO6
Robert8252 Posted October 14, 2010 Report Posted October 14, 2010 You want to wire the subs like so. Parallel each sub to it's self. Each sub is now 2ohm. Series every two subs together and you have three 4ohm loads. Now parallel each set to the amp and you have a 1ohm nominal load. What you listed sounded ok. Just a little short on power for the subs since all together would be rated 3,600rms and you won't see over 3k out of the amp I don't believe. 2013 F150 Crew Cab Old Build Log Feedback 2013 F150 Equipment - Some Awesome Stereo Sound Making Stuff
wL<3bass Posted October 14, 2010 Report Posted October 14, 2010 I'd get six Dual 2ohm subs wire each pair in series to achieve 3 2ohm loads and then wire them in parallel for a .67ohm load... Your gonna have a butt load of rise so should be fine... Even being a bdCP amp with that many woofers your most likely still gonna have too much rise for the CP to make up for. edit: dumb typos... Vehicle: 1997 S10 Blazer 4dr 4X4 Exterior: Rear End Bagged, Black Grill, Lifted 2" Amplifiers: Rockford Fosgate T8004 & T10001bd Batteries: 2 Stinger SPV35, Kinetik HC2400 Electrical: Big 3, DC Power 290amp Alternator w/ MLA at 15.5v Enclosure: 4.2 ft³ @ 33Hz 84sq.in. of port (20sq.in. per cube) Headunit: Eclipse CD3200 w/ 80G iPod Mids/Highs: Rockford T152s (a-pillars), Rockford T162s (doors) Subwoofers: 1 15" Fi BL Fully Loaded Wire: All 1/0g Kicker Hyperflex My YouTube Videos My Fiberglass A-Pillar Build My "Seamless" Looking Box Build My DD1508 T-Line Bandpass Build "Seamless" w/ Acrylic Windows (for '05 TrailBlazer) My Stealth 8" Fiberglass Build (for '05 TrailBlazer) My Build For A Friend's '08 Cobalt 15" BL Sealed Off From The Trunk My feedback/references...
Mobile Chassis Dyno Posted October 14, 2010 Author Report Posted October 14, 2010 I'd get six Dual 2ohm subs wire each pair in series to achieve 3 2ohm loads and then wire them in parallel for a .67ohm load... Your gonna have a butt load of rise so should be fine... Even being a bdCP amp with that many woofers your most likely still gonna have too much rise for the CP to make up for. edit: dumb typos... Box Rise was my next question. I know the best way to answer it would be to clamp it to see what kind of voltage and amperage the subs are pulling. But for now is there any way to estimate what type of rise I could see? Thank you in advance. Warm Regards, Dyno Brian 1997 Ford Probe |Sony Head Unit|Alpine V12 AccuClass-D MRD M1000 Amplifier|4 RE AUDIO SRX12D4 12's|Mids and Highs coming soon!| |1998 Mustang GT Twin Turbo|1986 Mustang GT Single Turbo|1996 Mustang Mystic Cobra N20|1995 Mustang Cobra 5,000 miles| 2002 ZO6
Robert8252 Posted October 14, 2010 Report Posted October 14, 2010 Yup. Easiest way to figure rise on a daily is to take your nominal ohm load and stick to that being your ohm load. not being a dick but I've learned my lesson now from people on here that for any daily use system rise isn't a thing you should concentrate on. 2013 F150 Crew Cab Old Build Log Feedback 2013 F150 Equipment - Some Awesome Stereo Sound Making Stuff
Mobile Chassis Dyno Posted October 14, 2010 Author Report Posted October 14, 2010 Yup. Easiest way to figure rise on a daily is to take your nominal ohm load and stick to that being your ohm load. not being a dick but I've learned my lesson now from people on here that for any daily use system rise isn't a thing you should concentrate on. Fair Enough. Warm Regards, Dyno Brian 1997 Ford Probe |Sony Head Unit|Alpine V12 AccuClass-D MRD M1000 Amplifier|4 RE AUDIO SRX12D4 12's|Mids and Highs coming soon!| |1998 Mustang GT Twin Turbo|1986 Mustang GT Single Turbo|1996 Mustang Mystic Cobra N20|1995 Mustang Cobra 5,000 miles| 2002 ZO6
Boon Posted October 14, 2010 Report Posted October 14, 2010 You want to wire the subs like so. Parallel each sub to it's self. Each sub is now 2ohm. Series every two subs together and you have three 4ohm loads. Now parallel each set to the amp and you have a 1ohm nominal load. What you listed sounded ok. Just a little short on power for the subs since all together would be rated 3,600rms and you won't see over 3k out of the amp I don't believe. The fuck dude? 4/3 = 1.33 not 1. Yours works out exactly the same as his - 8/6 = 4/3 = 1.33... Also you always series coils and parallel subs, where possible. IMO 1.33 is the best load you're going to get and since it's a CP amp that 0.33 ohms isn't gonna make shit of a difference. 10.x volts fo' life!
Mobile Chassis Dyno Posted October 14, 2010 Author Report Posted October 14, 2010 The fuck dude? 4/3 = 1.33 not 1. Yours works out exactly the same as his - 8/6 = 4/3 = 1.33... Also you always series coils and parallel subs, where possible. IMO 1.33 is the best load you're going to get and since it's a CP amp that 0.33 ohms isn't gonna make shit of a difference. Agreed on the 1.33 load. When I did the math I figured it for 5 subs instead of 6 Warm Regards, Dyno Brian 1997 Ford Probe |Sony Head Unit|Alpine V12 AccuClass-D MRD M1000 Amplifier|4 RE AUDIO SRX12D4 12's|Mids and Highs coming soon!| |1998 Mustang GT Twin Turbo|1986 Mustang GT Single Turbo|1996 Mustang Mystic Cobra N20|1995 Mustang Cobra 5,000 miles| 2002 ZO6
Robert8252 Posted October 14, 2010 Report Posted October 14, 2010 Just to help me understand than. Why is it 1.66. I thought it was just simply parallel got you......nevermind. Just figured it out. And I didn't know that about the coils needing to be series and the rest parallel. 2013 F150 Crew Cab Old Build Log Feedback 2013 F150 Equipment - Some Awesome Stereo Sound Making Stuff
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