BTL FTW Posted September 25, 2010 Report Share Posted September 25, 2010 how do you test impedance rise and how do you combat it? Quote Alpine F1 Status DD CS6.5 x2 Front Stage DD 9512H DD M4a @ 2 ohm DD S2b @ 8 ohm per channel I run high ohn loads for MASSIVE headroom and cleaner SQ 270amp alt D2400 up front D3100 x2 batter in back Link to comment Share on other sites More sharing options...
OBI Posted September 25, 2010 Report Share Posted September 25, 2010 Unless you have a strictly burp vehicle dont even worry about it. Quote Link to comment Share on other sites More sharing options...
fr34kout Posted September 25, 2010 Report Share Posted September 25, 2010 You need a clamp meter to calculate it. Clamp the power comin out of your amp, from that you can calculate your total impedance. Subtract your nominal impedance, and you have box rise. How do you fight it? Build another box, then another one, then another one, then a couple more, and see which one has the least rise. Quote Link to comment Share on other sites More sharing options...
OBI Posted September 25, 2010 Report Share Posted September 25, 2010 Sigh* Just waiting for Boon to chime in. Quote Link to comment Share on other sites More sharing options...
hdorre Posted September 25, 2010 Report Share Posted September 25, 2010 Sigh* Just waiting for Boon to chime in. Haha..you beat me to it Quote 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...
Boon Posted September 25, 2010 Report Share Posted September 25, 2010 The first couple of replies said all that needed to be said. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
fecupe2001 Posted September 25, 2010 Report Share Posted September 25, 2010 Well, i suggest you not to clamp your system, you are gonna get all sad hahhaa, clamping results for daily boxes makes you wanna cry, you have a 3500 watts giving you about 2000 real watts if you are lucky, makes you wanna kick yourself on the head! Quote I´m the SPL Gains topic creator!! wanna get louder?? check this: SPL Gains. Panamenian 2009 & 2010 & 2014 Bass Race 149.9 Champion! 2 15" subs and a 2K wired at 1 ohm, http://www.stevemeadedesigns.com/board/topic/167788-fecupe2001-2-15s-on-a-2k-video-on-page-3/ 8 Massive 15" subs and small power, http://www.stevemeadedesigns.com/board/topic/179296-fecupe2001s-8-15s-4th-order-bandpass-wall/ Link to comment Share on other sites More sharing options...
01 S-10 Posted September 25, 2010 Report Share Posted September 25, 2010 Well, i suggest you not to clamp your system, you are gonna get all sad hahhaa, clamping results for daily boxes makes you wanna cry, you have a 3500 watts giving you about 2000 real watts if you are lucky, makes you wanna kick yourself on the head! This is so true, when I clamped my 2200d I was only getting 450 watts. It was comforting though to know it was doing rated power at that ohm load(4.5 ohms) and I'm doing pretty good numbers for such little power Quote TDH FTW !!! Link to comment Share on other sites More sharing options...
fecupe2001 Posted September 25, 2010 Report Share Posted September 25, 2010 yeah, same happened to me with my Cadence C6, 6000 watts @ 1 ohm 16v specs, i had 13v and final impedance was 3.8 ohms, did 2800 watts wich was more than fine for 16v amp at 4 ohms, but it was very sad haha, if you are building a burping machine yes you need to know your real impedance, for daily, i wouldn´t even worry about it Quote I´m the SPL Gains topic creator!! wanna get louder?? check this: SPL Gains. Panamenian 2009 & 2010 & 2014 Bass Race 149.9 Champion! 2 15" subs and a 2K wired at 1 ohm, http://www.stevemeadedesigns.com/board/topic/167788-fecupe2001-2-15s-on-a-2k-video-on-page-3/ 8 Massive 15" subs and small power, http://www.stevemeadedesigns.com/board/topic/179296-fecupe2001s-8-15s-4th-order-bandpass-wall/ Link to comment Share on other sites More sharing options...
BTL FTW Posted September 25, 2010 Author Report Share Posted September 25, 2010 Thisvis interesting. I've seen posts where claims of larger 45svin enclosures spike the rise. Are there any conditions to avoid? I'm off to get bigger amps!!! Quote Alpine F1 Status DD CS6.5 x2 Front Stage DD 9512H DD M4a @ 2 ohm DD S2b @ 8 ohm per channel I run high ohn loads for MASSIVE headroom and cleaner SQ 270amp alt D2400 up front D3100 x2 batter in back Link to comment Share on other sites More sharing options...
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