sundownz Posted November 2, 2009 Author Report Share Posted November 2, 2009 -1 was too much with the 4500D -- woops 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...
1992Chevy K1500 Posted November 2, 2009 Report Share Posted November 2, 2009 How does a manufacturer determin what the rms would be for a sub exacly. X2 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...
95_1500 Posted November 2, 2009 Report Share Posted November 2, 2009 -1 was too much with the 4500D -- woops Detaillllllssss???? Quote Original Build http://www.stevemeadedesigns.com/board/index.php?showtopic=24095 Link to comment Share on other sites More sharing options...
sundownz Posted November 2, 2009 Author Report Share Posted November 2, 2009 I go by how much power it can handle pretty much "all day long" - literally. 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...
sundownz Posted November 2, 2009 Author Report Share Posted November 2, 2009 Detaillllllssss???? I sheared the aluminum former in two -- didn't break any glue joints or thermal the coil. I suspect I bottomed out my triple joint ring on the top plate hard enough that the shock broke off the former. Of course I had 2000 or so watts per sub at this point too -- something has to go eventually. I will add a LITTLE more rearward clearance on production models so even doing that will be slightly more difficult. 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...
95_1500 Posted November 2, 2009 Report Share Posted November 2, 2009 I sheared the aluminum former in two -- didn't break any glue joints or thermal the coil. I suspect I bottomed out my triple joint ring on the top plate hard enough that the shock broke off the former. Of course I had 2000 or so watts per sub at this point too -- something has to go eventually.I will add a LITTLE more rearward clearance on production models so even doing that will be slightly more difficult. Dammmnnnn... Wonder how much power they wouldve taken had that not happened. Quote Original Build http://www.stevemeadedesigns.com/board/index.php?showtopic=24095 Link to comment Share on other sites More sharing options...
sundownz Posted November 16, 2009 Author Report Share Posted November 16, 2009 I bought two DD 1508 to compare T/S specs to... the DD 1508 is WELL broken in as it is used. Sundown SA-8 (D2) / DD 1508 (D4) : RE: 3.28 ohms (series) / 7.48 ohms (series) FS: 41.6 Hz / 44.6 Hz Qes: 0.513 / 0.844 Qms: 6.606 / 9.217 Qts: 0.476 / 0.773 Le: 2.778 mH / 6.446 mH Vas: 3.285 L / 4.672 L BL: 17.138 N/A / 17.78 N/A Cms: 83.341 um/N / 99.97 uM/ N Mms: 175.654 g / 126.977 g Sens: 78.476 dB @ 1w/1m / 78.77 dB @ 1w/1m BL^2/RE: 89.5 / 42.26 BL^2/RE is an indication of static motor strength. Since BL doesn't tell you how strong a motor is without knowing the DCR this measure allows you to compare speakers with different DCR to each other. For comparison shoppers this will give you an idea of what works best for you -- I couldn't find the T/S anywhere else for the 1508s so I got some 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...
99s10dowork Posted November 16, 2009 Report Share Posted November 16, 2009 want 4 of these sooo bad...lol. great job on a badass sub! Quote 2002 Chevrolet Silverado regular cab 3/6 drop -Alpine cda-9884 -Rockford Fosgate Power 6.5's -US Amps XT-4000DE V2 -Fi SSD 10d2-for now Link to comment Share on other sites More sharing options...
kentb Posted November 16, 2009 Report Share Posted November 16, 2009 I bought two DD 1508 to compare T/S specs to... the DD 1508 is WELL broken in as it is used.Sundown SA-8 (D2) / DD 1508 (D4) : RE: 3.28 ohms (series) / 7.48 ohms (series) FS: 41.6 Hz / 44.6 Hz Qes: 0.513 / 0.844 Qms: 6.606 / 9.217 Qts: 0.476 / 0.773 Le: 2.778 mH / 6.446 mH Vas: 3.285 L / 4.672 L BL: 17.138 N/A / 17.78 N/A Cms: 83.341 um/N / 99.97 uM/ N Mms: 175.654 g / 126.977 g Sens: 78.476 dB @ 1w/1m / 78.77 dB @ 1w/1m BL^2/RE: 89.5 / 42.26 BL^2/RE is an indication of static motor strength. Since BL doesn't tell you how strong a motor is without knowing the DCR this measure allows you to compare speakers with different DCR to each other. For comparison shoppers this will give you an idea of what works best for you -- I couldn't find the T/S anywhere else for the 1508s so I got some jacob, can you drop those dd's in the same box you made and compare the numbers with the sa-8? Quote New System 2 10" Fi SSD, Sundown 1500d Build I build and design enclosures(cheap price), PM ME Kicker L7 Navigator(plexiglass, fiberglass, aeroport) Build BTL 18" Escalade(plexiglass, battery tray) Build http://www.kentbaudio.com Old System Link to comment Share on other sites More sharing options...
sundownz Posted November 16, 2009 Author Report Share Posted November 16, 2009 I cannot -- the hole cut-out is way too big. We cut it slightly too big for the SA-8 even (hence the duct tape) and the DD cut-out is smaller. Now... Derrick and I plan to build another box and get the hole cut-out perfect... if so then the DD should seal up with some duct tape. 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...
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.