skittlesRgood Posted November 2, 2009 Report Share Posted November 2, 2009 how in gods name is jacob only get 1ohm rise in his testing? im not calling him out, i want to know the secret. i just got a clamp meter and my impedance was 12.5! i have 2 saz-1500's strapped at 2.5ohm. tested at 45hz. gain set with an o-scope. my box is 5^ft, two 6" flared ports tuned to 39hz. 115.8volts/9.2amps = 12.5 115.8 x 115.8 = 13409.64/12.5 = 1072.77 obviously im very disapointed that my two 1500w amps are only doing a little over 500w each. so what can i do to lower my imp rise? im sure a new box would be in order but maybe there are some little things i can do to mine to help? im ready to improve my knowledge guys. teach me all you can. Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
sundownz Posted November 2, 2009 Report Share Posted November 2, 2009 The actual impedance will vary dramatically with frequency as well. Try other frequencies. "High Rise" in itself isn't necessarily bad if the box is efficient. Quote - Jacob Fuller - Owner, Sundown Audio - Sundown Audio on FACEBOOK - Please DO NOT PM ME -- use my email address -- [email protected] Link to comment Share on other sites More sharing options...
skittlesRgood Posted November 2, 2009 Author Report Share Posted November 2, 2009 (edited) i understand that but my peak is at 45hz so i only really cared about testing at that frequency. if there a way to lower the imp rise at 45hz? i mean, you only got less than 1ohm rise in your testing. there must be some way i can get results close to that. ill go do more testing at some more frequencies Edited November 2, 2009 by skittlesRgood Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
Eric B Posted November 2, 2009 Report Share Posted November 2, 2009 i understand that but my peak is at 45hz so i only really cared about testing at that frequency. if there a way to lower the imp rise at 45hz? i mean, you only got less than 1ohm rise in your testing. there must be some way i can get results close to that. bigger box? thats a start.. wire to a lower resistance? but damn 5x rise sucks.. most ive had is 4x rise jus wire lower itll shrink down a lil Quote 2007 Chevy HHR LT UNDER CONSTRUCTION 1st Place Loud N Low 2010 MWSPL Finals 3rd Place Xtreme 3 2010 MWSPL Finals Link to comment Share on other sites More sharing options...
skittlesRgood Posted November 2, 2009 Author Report Share Posted November 2, 2009 that would mean running them at .25ohm each. not really comfortable with that. not with only 2 batteries at least. Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
CR Boom Posted November 3, 2009 Report Share Posted November 3, 2009 that would mean running them at .25ohm each. not really comfortable with that. not with only 2 batteries at least. It won't be with box rise.... also I also noticed bigger port area =less rise Quote 2007 Great Wall So Cool 4-12' RE audio MX's Stetsom 7k2D 6-Batts 3-Mechman 250 amp Rhino's Link to comment Share on other sites More sharing options...
skittlesRgood Posted November 3, 2009 Author Report Share Posted November 3, 2009 It won't be with box rise.... also I also noticed bigger port area =less rise well if the theory behind flared ports being more efficient if true, i should have a lot of port area. maybe i need to go back to a slot port and go bigger? Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
jesterjames Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) first thing i would do is check the woofers free air imp at 45hz Edited November 3, 2009 by jesterjames Quote Pioneer 500UB 1 LVL4 15" 4.3cubes tuned to 35HZ BXi1606D 1/0 Red top in back JBL 5 1/4's front Infinity Kappa 6 1/2's rear 145.7 Legal on music New Audio Control Link to comment Share on other sites More sharing options...
sactownstang Posted November 3, 2009 Report Share Posted November 3, 2009 (edited) .25.... before rise...... U talking for a burp or for music? Edited November 3, 2009 by sactownstang Quote Link to comment Share on other sites More sharing options...
1992Chevy K1500 Posted November 3, 2009 Report Share Posted November 3, 2009 With rise like that, something tells me you'd be alright running .25 ohms before rise. You'd probably have 1.5 or so ohms. Quote My comp setup (Not bad for what it is): HP Compaq Presario V6120US laptop with: 15.4" widescreen AMD Turion 64 X2 1.6GHz processor 2x1GB stick DDR2 SDRAM (667 Mhz) Seagate Momentus 500GB SATA HDD 128MB shared video memory Windows 7 Home Premium 64 bit 12 cell Lithium Ion battery (actual battery usage time: 6 hours) What it does: On a USB 2.0 Wireless card Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.