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Impedance Plots (POST THEM HERE FOR DISCUSSION)


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Here's the box for the 8's. Port area is good, build log coming soon. Triticum released his port area thread around the time i was designing this box in WinISD. Had to make an emergency change on the port design but it came out good!

IMG_2933.JPG

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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7 hours ago, WalledSonic said:

Here's the box for the 8's. Port area is good, build log coming soon. Triticum released his port area thread around the time i was designing this box in WinISD. Had to make an emergency change on the port design but it came out good!

Got a link to Tricticum's port area thread?

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1 minute ago, onebadmonte said:

Got a link to Tricticum's port area thread?

Here you go sir.

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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  • 10 months later...

Its been a while.  Figured I'd provide a comparative Impedance Plot of my old PSI Platform 2 15s versus my new Fi SP4V2 15s.  Again, taken with the IM-SG.  

The plot shows measured values in green and red, and calculated values in blue and purple (to simulate what my 2 amps see).  Both sets of subs were very broken-in when I took these measurements.

Not sure what about the subs makes the SP4 unload at a higher frequency than the PSI's, but the data dont lie.  Very interesting how the curve is much smoother with the Fis.  The 36Hz blip (green) from the PSIs is now gone, yet the box hasnt changed.  Now I'm curious if that really was a standing wave or something to do with the PSI subs TS parameters.

Thoughts?  Interest?  If anyone wants the spreadsheet, hit me up.  Its plug n play.  Plot updates live.

 

PSI vs Fi.PNG

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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