Max1636 Posted April 28, 2013 Report Share Posted April 28, 2013 So I've still got my old Fi SP4 18 sitting in it's box on my floor and I was thinking... What could 6k RMS do to it? Currently in my car I've got a Crescendo BC5500 running a SoundStram XXX 18 (10,000w RMS) and I thought about if the SP4 could actually be louder than the XXX. My gains are set clean using the DD-1 and the -10db Track but at full tilt how quickly do you think it would fry? With my electrical I could assume the amp is only giving it 5k but still this is something I wanted to try tomorrow has anyone seen an SP4 take 5k for an extended period of time? (Old Car) 1995 Volkswagon Golf MK3 2.0L: Fi SP4 18 On A DC Audio 3.5K In A PWK Box Hertz DSK 6" Speakers, Clarion HU 3x Fullriver 120aH AGM's, 225A Alt 2012 Subaru BRZ: Audison Prima APK 163 Bit One, Rockford Amps, Audison Sub Link to comment Share on other sites More sharing options...
bkolfo4 Posted April 29, 2013 Report Share Posted April 29, 2013 Nobody can guarantee an answer to this question. Will a SP4 handle that amp? Yes Can you blow a SP4 on that amp? Yes I have customers who have killed BTLs on 2000 watts while I ran them on IA40.1's at a 1/2 ohm and never had an issue. Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
Max1636 Posted April 29, 2013 Author Report Share Posted April 29, 2013 I tried this just now with the expected result that the woofer was stinky after a few minutes, but what I didn't expect was that it was actually louder than my SoundStream XXX 18" which I thought was interesting. (Old Car) 1995 Volkswagon Golf MK3 2.0L: Fi SP4 18 On A DC Audio 3.5K In A PWK Box Hertz DSK 6" Speakers, Clarion HU 3x Fullriver 120aH AGM's, 225A Alt 2012 Subaru BRZ: Audison Prima APK 163 Bit One, Rockford Amps, Audison Sub Link to comment Share on other sites More sharing options...
john253a Posted April 29, 2013 Report Share Posted April 29, 2013 Louder how? What did you determine the db or just louder to the ear Link to comment Share on other sites More sharing options...
Max1636 Posted April 29, 2013 Author Report Share Posted April 29, 2013 Louder how? What did you determine the db or just louder to the ear Well this may not be the best indication I know but it did sound louder but the way I could tell was my ears were actually hurting haha, when I first install systems in my car my ears will hurt at first but quickly adjust (yes, this may be a very bad thing) but I played a song I play all the time and on the SP4, it hurt. (Old Car) 1995 Volkswagon Golf MK3 2.0L: Fi SP4 18 On A DC Audio 3.5K In A PWK Box Hertz DSK 6" Speakers, Clarion HU 3x Fullriver 120aH AGM's, 225A Alt 2012 Subaru BRZ: Audison Prima APK 163 Bit One, Rockford Amps, Audison Sub Link to comment Share on other sites More sharing options...
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