sundownz Posted August 3, 2010 Report Share Posted August 3, 2010 (edited) Testing to see how well it keeps the coil temperature down by seeing how much power compression we get. Quoted from video : "Testing our new "woofer power test" rig... we have an adjustable voltage knob on the wall socket to get the power level we want. For the first 2 minutes or so we are trying to read on the "power" setting on the clamp but it didn't want to cooperate so I changed over to simply amperage and voltage afterward. At 2:20 we have 11.64A/61.6V for 717 watts... after a full 4 minutes and 45 seconds at 7:05we still have 11.19A so the sub is still seeing 689 watts. So we are seeing VERY little power compression even above rated power on a pure 60 Hz sine wave after 7 full minutes -- which is not even taking advantage of the air cooling as much as a lower frequency." I'll use this data to examine how my upcoming tweaks to the cooling system work. Pretty boring video... but I figured people would get mad if I edited it in any way Edited August 3, 2010 by sundownz 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 August 3, 2010 Author Report Share Posted August 3, 2010 This is the voltage adjustment rig - Brandon's custom creation 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...
smokeumtires Posted August 3, 2010 Report Share Posted August 3, 2010 Wow the shit you guys come up with... UNREAL.. OH and BTW Buddy IM LOVIN MY 4500s!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
sundownz Posted August 3, 2010 Author Report Share Posted August 3, 2010 We get creative from time to time =) Glad you like the 4500s! 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...
smokeumtires Posted August 3, 2010 Report Share Posted August 3, 2010 i need 2 more.... waiting patiently for the next batch Quote Link to comment Share on other sites More sharing options...
EricR Posted August 3, 2010 Report Share Posted August 3, 2010 Lol wall socket input, that's crazy. Quote i was thinking leave the 12 sitting in the box in the hole and duck tape from the bottom of the sub to the bottom of the baffle so the sub doesnt free air. would that work? Link to comment Share on other sites More sharing options...
sundownz Posted August 3, 2010 Author Report Share Posted August 3, 2010 A bit saddened... the brand new Alpine Type-R failed after about 1.5 minutes of the same testing (as close as we could get it anyway). I'll put the videos up after lunch for that. 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 August 3, 2010 Author Report Share Posted August 3, 2010 Well here it is... I was very sad that it didn't last longer thermally but I am still impressed with the engineering put into the motor of the new Type-R : http://www.youtube.com/watch?v=os4TZTpLNSI "Done to compare with SA-12 results... we dialed in power as close as we could but the Type-R didn't last long. Few samples of actual power applied : 28 seconds = 497 watts / 51 seconds = 667 watts / 1 minute 18 seconds = 717 watts -- woofer didn't last much longer when exposed to a hair over 700 watts. Conclusion... SA-12 coil cooling is more effective." 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 August 3, 2010 Author Report Share Posted August 3, 2010 So it's not a total waste I took some pictures of the Type-R after we blew it... Brandon took the hammer to it before I got many "before" pictures *laughs* It is worth nothing that you cannot remote the Type-R motor from the frame as far as we could tell. * Around the edges you can see where air vents to the outside in the slits between the top plate. * The special curve on the pole flattens BL * One piece frame / shorting ring assembly... the magnet was busted out to see this... magnet is multiple V shaped pieces. 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 August 3, 2010 Author Report Share Posted August 3, 2010 http://www.youtube.com/watch?v=LZ0eZj82gI0 Here we are cutting up the Type-R. 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...
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