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Installing Subwoofer as Infinite Baffle IB in rear parcelshelf / if no skyhole
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12-05-2012, 05:56 AM | #23 |
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You get (close to) true IB only if you open the trunk!
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Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa OT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
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12-05-2012, 06:01 AM | #24 |
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Makkan, looking forward to seeing your install. Are these going in the rear deck?
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12-05-2012, 06:39 AM | #25 | |
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Thanks buddy. I will try to fit 12w7 on the rear deck. I had issues to fit alpine 10 inch sub due to its depth. W7 is deeper and 12 inch so I have no clue how I will fit it. But I have no other choice than to fit it there. Will update the thread once it is fitted.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play Last edited by makkan00; 12-07-2012 at 02:40 PM.. |
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12-05-2012, 11:36 AM | #26 | |
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12-05-2012, 06:45 PM | #27 | |
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Looked at that thread. Looks very promising. I do not have rear seats with skyhole. In order to go for skyhole installation, I will have to change all the seats of my car. I bought my sub today and now I will have to wait for its delivery.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play |
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12-05-2012, 07:08 PM | #28 | |
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Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa OT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
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12-06-2012, 05:43 AM | #30 | |
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Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa OT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
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12-06-2012, 06:00 AM | #31 | |
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In an IB application you can fully expect the bandwidth to excel from 15-45Hz. Above this things do and will roll off quick. Its very important to have strong midbass in IB installs. You won't have stong upper end response like you typically would in a sealed enclosed setup, therefore midbass is paramount to ensure good transition in your setup. As for your judgement scores, you are comparing 2 very different drivers for 2 VERY different intended applications. Take the efficiency readings with a pinch of salt and read up about Hoffmans Iron law. The ratings on power handling are also somewhat off, Fi rate the IB3 based on mechnical power handling not thermal. Thermally that thing will take twice the rated power but in IB drivers the mechnical limitations are primary way of giving ratings. |
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12-06-2012, 06:19 PM | #32 | ||||
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However it was readily available so I thought to give it a try. Quote:
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Considering thermal limits, both can produce 1000W and possibly FI can make additional 100W. And taking mechanical power handling, both can handle 500-550w if I am not wrong. To sum up, I had to pay more for JL 12W7 compared to Fi IB3. It does not make sense to choose it but I wanted to experiment. And it was readily available to me. If it does not sound good, I will order Fi IB3. (waiting for a new driver is pain in bum and I am bit of impatient person when it comes to gadgets, cars etc).
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play |
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12-06-2012, 06:26 PM | #33 |
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Good work indeed.
Kaigoss, I saw a thread on adding skyhole. Part number etc etc. But cannot find that thread now. So have you ordered arm rest from the dealer or used your creativity to make this arm rest yourself? Just to confirm, you took the measurements of arm rest and cut a hole in the seat and inserted arm rest in their? What about the leather on the arm rest and the foam from the rear seat? Hope you do not mind sharing some details on how you made it. I picked my JL 12W7 yesterday and looking at the weight / size, I will have to use certain tricks to get it fitted on rear deck. If I fail, then I will have to go your way of fitting IB.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play |
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12-07-2012, 01:41 AM | #34 | |
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12-07-2012, 05:43 AM | #35 |
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When modeling my Infinities with Qts values of .7 and .48 I noticed a noticeable drop off above 50hz with the higher Q driver. After listening to both I can confirm that. The higher Q driver had very little impact, but better low end extension. The lower Q driver has excellent impact up top and sounds much more controlled (tighter) but lacks a little on the bottom end. However compared to a sealed enclosure it is still night and day.
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12-07-2012, 06:27 AM | #36 | |
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12-07-2012, 07:26 AM | #37 | |
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I'll make a DIY on this.
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12-07-2012, 09:04 AM | #38 |
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So kaigoss, you given any thoughts about the best way to go back to OEM?
Also, i know you've probably used different subs etc, but generally how do you rate a corner enclosure and IB? When you said sealed enclosure in an earlier post were you referring to a corner one? |
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12-07-2012, 09:51 AM | #39 | |
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Yes I was referring to a sealed corner enclosure. If you still want to go that route I think you can get it to be very loud but you will need a special sub (I only found one in my search) and you will need at least 800w, better 1000 or more. At that point I do not know if the electrical system is adequate anymore, that's why I decided to go IB.
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12-07-2012, 10:56 AM | #40 | ||
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You have completely under looked enclosures here, You can not deny science! 2 15" IB drivers in your case Vs a single 12" driver in around 7-8 cubes. You simply can not outlook Hoffman's iron law. Two VERY different setups sir Quote:
High Qts generally will have smoother tonal characteristics, lower Qts more impact. Qts is also a good indicator of motor strength and how its delivered. Be it a peaky type driver with a short wound coil means it won't have much in the way of massive throw for those big dynamics. |
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12-07-2012, 01:11 PM | #41 | |
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Out of different enclosures, corncer enclosure gives you least rattles. IB is basically efficient way of having bass in the cabin and there are few reasons; 1- Sub fires into cabin directly. 2- You do not require very powerful subs, as sub fires straight into cabin. If you go for IB sub (made of that purpose) then you follow their power ratings, otherwise on a normal sub, keep it at 50-60% of power rating to avoid mechanical failure.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play |
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12-07-2012, 01:37 PM | #42 | |
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Haha sometimes you just have to cross that bridge when it comes!
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I can't wait now! |
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12-07-2012, 02:31 PM | #43 | |
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Am After reading lots of material and looking at the specs of both subs, JL 12W7 seems very promising for IB. I am not saying better than IB3 but should give the results similar to IB3. Also considering that my boot is half full most of the time, I am hoping that it will give me excellent results. What do you say? Tried to install it today on the rear deck. Loads of work is involved, but eventually I will get there.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play |
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12-07-2012, 02:33 PM | #44 | |
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F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play |
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