Might Go IB - BMW 3-Series (E90 E92) Forum

Dominus · 01-17-2013, 01:12 PM

after seeing and reading many threads about IB i now want to give it a try. my original intentions were to make my own cornerbox and i still might but my friend has a couple of pieces of 1inch MDF he said i could have from his old box.

are there any specifications on how to make an IB.
1 how to build the baffle
2 how to mount to seats
3 if i should even try considering my seats fold
4 do i just use a 15x15 piece across the back and mount the sub to it?
or do i go with what this Guy did

thanks

kaigoss69 · 01-17-2013, 07:54 PM

It isn't much work just to cut that square and cut a hole in it and then screw it against the back of the seat. Just do it provisionally and see how you like it. If you do you can make it look peeeerty afterwards! What sub would you be using?

makkan00 · 01-18-2013, 07:12 AM

You MUST go for one.

mob17 · 01-18-2013, 04:25 PM

Quote:

Originally Posted by makkan00

You MUST go for one.

Even though i only had mine for a few weeks with no EQ or anything it was lovely. For true bassheads you may want 2x12 or 2x15 but for just SQ a single 12 or 15 is perfect.

mob17 · 01-18-2013, 04:27 PM

Quote:

Originally Posted by kaigoss69

It isn't much work just to cut that square and cut a hole in it and then screw it against the back of the seat. Just do it provisionally and see how you like it. If you do you can make it look peeeerty afterwards! What sub would you be using?

Sorry for the off topic question OP.

Kai how did you get on with that AE sub?

TMR · 01-18-2013, 04:46 PM

I run a pair of 15's for SQ.

kaigoss69 · 01-18-2013, 08:44 PM

Quote:

Originally Posted by TMR

I run a pair of 15's for SQ.

More surface area = less excursion = better sound!

Dominus · 01-19-2013, 12:00 AM

So folding seats arent a problem. I can simply screw a 15x15 piece of mdf to the back of my seat with a hole for the sub and fire it through my ski hole pass with no issues? I want to do it right the first time...

TMR · 01-19-2013, 03:26 AM

Quote:

Originally Posted by kaigoss69

More surface area = less excursion = better sound!

Im switching up my setup to a pair of Aura 18's!!! I cant wait!

kaigoss69 · 01-19-2013, 06:11 PM

Quote:

Originally Posted by TMR

Im switching up my setup to a pair of Aura 18's!!! I cant wait!

Which Auras? I take it you took measurements to make sure those 18s fit? - I just screwed a 15 to the back seat and there is less than 1" clearance top to bottom.

Dominus · 01-20-2013, 12:01 PM

mob17 · 01-20-2013, 01:08 PM

Quote:

Originally Posted by Dominus

So folding seats arent a problem. I can simply screw a 15x15 piece of mdf to the back of my seat with a hole for the sub and fire it through my ski hole pass with no issues? I want to do it right the first time...

I would like to know this too...

TMR · 01-20-2013, 06:53 PM

I have 15's and folding seats.

Aura 1808's will fit!

Dominus · 01-21-2013, 05:08 PM

ddoes the seat have a metal backing?

TMR · 01-21-2013, 11:22 PM

Quote:

Originally Posted by Dominus

ddoes the seat have a metal backing?

Yes, my fold down seats have a metal backing. I need to have my armrest down for the bass to come through.

Dominus · 01-22-2013, 08:48 AM

Got it installed

(sorry for the crappy cell pics but it 7*F out here)

kaigoss69 · 01-22-2013, 10:46 AM

Quote:

Originally Posted by Dominus

Got it installed

(sorry for the crappy cell pics but it 7*F out here)

Cool! Is that a 12w3? - make sure you set a subsonic filter at around 25hz.

Dominus · 01-22-2013, 10:52 AM

Yes a 12w3 2ohm and I have it powered by a jl500/1. I'm still learning audio so setting the filter to 25hz is what haha?

kaigoss69 · 01-22-2013, 11:17 AM

Quote:

Originally Posted by Dominus

Yes a 12w3 2ohm and I have it powered by a jl500/1. I'm still learning audio so setting the filter to 25hz is what haha?

Google is your friend. On your amp it may be called infrasonic filter.

Dominus · 01-22-2013, 01:03 PM

I'm sorry but I understand the filter but 25hz is so close to the bottom range of the amp.

If I put it between 50 and 0 I should be fine?

kaigoss69 · 01-22-2013, 01:27 PM

Like I said google it. Doesn't look like the amp has a subsonic filter, so be careful, especially with bass boost.

Dominus · 01-23-2013, 02:25 PM

where do you think i should keep the filter frequency, and i plan on keeping the bass boost off since i read somewhere that it isnt exactly necessary when using a lowpass filter (low input). right now i have it set to 30 to see what it does and it seems to have a popping sound when i turn it up. This sub is supposed to be capable of 500 rms but do you think i may be over powering it?

01-17-2013, 01:12 PM	#1
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]	Might Go IB after seeing and reading many threads about IB i now want to give it a try. my original intentions were to make my own cornerbox and i still might but my friend has a couple of pieces of 1inch MDF he said i could have from his old box. are there any specifications on how to make an IB. 1 how to build the baffle 2 how to mount to seats 3 if i should even try considering my seats fold 4 do i just use a 15x15 piece across the back and mount the sub to it? or do i go with what this Guy did thanks
	Tweet

01-17-2013, 07:54 PM	#2
kaigoss69 Colonel Drives: '08 335i Join Date: Jul 2008 Location: SC Posts: 2,269 iTrader: (5)	It isn't much work just to cut that square and cut a hole in it and then screw it against the back of the seat. Just do it provisionally and see how you like it. If you do you can make it look peeeerty afterwards! What sub would you be using? __________________ Mobridge DA2 > JBL MS-8 > JL Audio HD600/4 > (3) Hybrid Audio L3SE & (2) Rainbow Cal25; JL Audio HD900/5 > (2) Morel HCW-10 & (1) AE SBP15

01-18-2013, 07:12 AM	#3
makkan00 Brigadier General Drives: E90 Join Date: Dec 2011 Location: London Posts: 3,910 iTrader: (15)	You MUST go for one. __________________ AluFelgens, LCI conversion, Eibach Sportsline, CF Interior Trims, Twin exhaust, Sports + Memory seats retrofit ICE: P99RS - Focal 100KRS II - SWS-8s - JL600/6 - JL300/2 - JL1000/1 - JL 12W7 IB My Audio build.

01-18-2013, 04:46 PM	#6
TMR Colonel Drives: M3 Join Date: Jun 2008 Location: Torrance Posts: 2,544 iTrader: (11)	I run a pair of 15's for SQ. __________________ 2011 E92 M3 : Angel Eye Brights, Black Grills, VRS decklid, H&R Springs, Magnaflow Exhaust, Proceed V5 with Vishnu Meth www.tmrmzine.com/m3 SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/

01-20-2013, 06:53 PM	#13
TMR Colonel Drives: M3 Join Date: Jun 2008 Location: Torrance Posts: 2,544 iTrader: (11)	I have 15's and folding seats. Aura 1808's will fit! __________________ 2011 E92 M3 : Angel Eye Brights, Black Grills, VRS decklid, H&R Springs, Magnaflow Exhaust, Proceed V5 with Vishnu Meth www.tmrmzine.com/m3 SOLD E92 335i Stage 3+ with all the toys www.tmrmzine.com/335/ SOLD E39 M5 Modded, What a great car! www.tmrmzine.com/m5/

01-19-2013, 12:00 AM	#8
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]	So folding seats arent a problem. I can simply screw a 15x15 piece of mdf to the back of my seat with a hole for the sub and fire it through my ski hole pass with no issues? I want to do it right the first time...

01-20-2013, 12:01 PM	#11
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]

01-21-2013, 05:08 PM	#14
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]	ddoes the seat have a metal backing?

01-22-2013, 08:48 AM	#16
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]	Got it installed (sorry for the crappy cell pics but it 7*F out here)

01-22-2013, 10:52 AM	#18
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]	Yes a 12w3 2ohm and I have it powered by a jl500/1. I'm still learning audio so setting the filter to 25hz is what haha?

01-22-2013, 01:03 PM	#20
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]	I'm sorry but I understand the filter but 25hz is so close to the bottom range of the amp. If I put it between 50 and 0 I should be fine?

01-22-2013, 01:27 PM	#21
kaigoss69 Colonel Drives: '08 335i Join Date: Jul 2008 Location: SC Posts: 2,269 iTrader: (5)	Like I said google it. Doesn't look like the amp has a subsonic filter, so be careful, especially with bass boost. __________________ Mobridge DA2 > JBL MS-8 > JL Audio HD600/4 > (3) Hybrid Audio L3SE & (2) Rainbow Cal25; JL Audio HD900/5 > (2) Morel HCW-10 & (1) AE SBP15

01-23-2013, 02:25 PM	#22
Dominus First Lieutenant Drives: 2009 Bmw 328i w/ XDrive Join Date: Oct 2011 Location: Indiana PA Posts: 325 iTrader: (0) Garage List 2009 BMW 328i [5.00]	where do you think i should keep the filter frequency, and i plan on keeping the bass boost off since i read somewhere that it isnt exactly necessary when using a lowpass filter (low input). right now i have it set to 30 to see what it does and it seems to have a popping sound when i turn it up. This sub is supposed to be capable of 500 rms but do you think i may be over powering it?

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