sundownz Posted April 8, 2011 Report Share Posted April 8, 2011 (edited) Had a customer send in a pair of BTL 15s for me to re-build -- first time seeing the new UFO style BTLs in person. Very large and heavy motor on these guys -- also looks like they started using four separate magnets on these rather than a single large slug; presumably to prevent potential defects in the big slug. In any event -- on to the to re-build... the original failure was a burnt up tinsel lead on one of the drivers... so I am using our double lead Z v.2 spiders on the re-builds. * Original Failure Point * I am using a Z v.3 coil -- it is similar in dimension to the BTL stock coil but it is 8-layers vs. 4-layers on the BTL coil... it is 60mm WW vs. 64mm WW on the original. Performance should be very similar in the end, though. * I used a rear triple joint ring from the Z v.3 line on these. * Original rear triple joint - just a bit dusty. * Original basket spacers - these are here to make room for the extended top plate neck on this driver. * Using these nuts to get the spacing right while waiting on the machined spacers. ----- They are done -- I should have them by Friday or so to finish these drivers next Monday. They are made of Delrin -- a super hard resin material : Acetal Resin | DuPont ™ Delrin ® Edited April 8, 2011 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 April 8, 2011 Author Report Share Posted April 8, 2011 Based on customer input these will have two Z v.2 spiders and a Nightshade cone to go with the Z v.3 coil and triple joint ring The new spacer was needed to make clearance for the triple joint ring so it will not hit the extended neck on the top plate. --- * Double Leads * Spacer installed. * Split magnet * Going to poke leads through, solder, and finish top triple joint this morning. This is the first one -- second one will be the same. --- T/S specs measured after short break-in period - should extend nice and low for the customer : RE: 2.0 ohms Fs: 31.8 Hz Qes: 0.33 Qms: 7.66 Qts: 0.32 Le: 2.59 mH Vas: 64 L BL: 18.3 NA Mms: 267g Cms: 93 uM/N Sens: 89.76 dB 1w/1m 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...
TIG Posted April 8, 2011 Report Share Posted April 8, 2011 What is the rms rating on something like this? Or should I say what kind of rms power will it take before exploding? Quote Since were all having a moment of truth. I hate country too.. I'd only listen to it if I got some hotass bitch in my car and shes gonna suck my dick. Link to comment Share on other sites More sharing options...
sundownz Posted April 8, 2011 Author Report Share Posted April 8, 2011 What is the rms rating on something like this? Or should I say what kind of rms power will it take before exploding? Thermal RMS will be about the same as stock -- mechanically these are a bit softer based on what the customer has for enclosure and power. 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 April 8, 2011 Author Report Share Posted April 8, 2011 * Put a small pad on as the double leads can make a small tapping sound at high excursion. Probably not audible in-box but it makes me feel better! 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...
TIG Posted April 8, 2011 Report Share Posted April 8, 2011 I was just wandering because I purchased a dc xl 15 d1 with an extra spider and on the power I am putting on it Im sure I will need a re-cone at the end of the summer. Wasnt sure how they work. If they can be beefed more than what the sub is already or not. Looks good tho, looks like you have done this a time or two lol Quote Since were all having a moment of truth. I hate country too.. I'd only listen to it if I got some hotass bitch in my car and shes gonna suck my dick. Link to comment Share on other sites More sharing options...
dwright27 Posted April 8, 2011 Report Share Posted April 8, 2011 Looks nice jacob Quote 2006 F-150 4 DC XL M2 18's Walled Daily Driver XS Power 4 DC 3.5kw Team DC Team S.P.L. Lot of Audio Technix and 1/0 DC Audio Dealer American Bass Dealer XS Power Dealer Audio Technix Dealer Link to comment Share on other sites More sharing options...
cc_audio Posted April 8, 2011 Report Share Posted April 8, 2011 These are my favorite threads! Whenever Ken, Scott, Ed or Jacob post up build threads of one-off subs I'm all over them. Sub looks awesome Jacob, those spaces are pretty cool. Quote It's all gone! The Celica Build Feedback If I buy something from you, DO NOT USE FEDEX! Link to comment Share on other sites More sharing options...
sundownz Posted April 8, 2011 Author Report Share Posted April 8, 2011 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...
S15_Silvia Posted April 8, 2011 Report Share Posted April 8, 2011 Dear god those look nice. 2nd pic is cool with the other BTL peeking at you from the background. What are the chances I could get the already-custom sub I have in my sig re-coned by you? PM me if you'd like. Quote 2016 Subaru BRZ | Sony XAV-AX100 | Rockford Fosgate DSM 4080 & DSM 40ix | On 6/6/2012 at 6:32 PM, 'LZTYBRN' said: 3. Don't put speakers outside the car unless you are the ice cream man. My feedback thread 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.