Subwoofer placement and car balance - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

denverizzles · 09-04-2012, 08:43 AM

So i've been looking to add a sub to my car, but i'm wondering if the placement of the sub would change the balance of the car. If you're going to add lets say 30lbs to right rear of the car, would that shift the way the car handles during autox?

anyone have experience with this?

Spaceywilly · 09-04-2012, 10:22 AM

Make it removeable. When I have done autocross they made me take out my sub anyways.

YW-Slayer · 09-04-2012, 11:29 AM

Mine's in the rear left. Can't say I've noticed a big difference, but it's not like I've been doing 3X7R3m3m1e111!111!111 trackday driving all-day, everyday.

Turbowned · 09-04-2012, 08:43 PM

It should be removable. My friends always took theirs out during auto-x. The weight difference won't be enough to really unsettle the car during street driving. You looking at the one in the accessory brochure or an aftermarket one?

BigJyoungblood · 09-05-2012, 02:40 AM

take out the spare its about the same weight, you dont need it since you have 2 years roadside assistance

Niko · 09-05-2012, 03:37 PM

Go for dual 8's or 10's, one on each side

cgrey · 09-05-2012, 09:54 PM

MrBodyMassage · 09-05-2012, 10:13 PM

With a driver the car weighs ~2900 lbs. 30/2900 = 0.103 or 1.03%. You're changing the weight of the car by 1%. Would an F1 driver notice? Yep, probably. Would you or me? No. Do you notice a difference when you put a suitcase in the trunk? Me neither.

whataboutbob · 09-05-2012, 11:10 PM

I made my sub box with 2 12's removable for track/autox days and those instances when I would _really_ need the trunk.

With it in the car I can't say I've noticed any negative impact to the handling of the car. Not sure how much it weighs.

09-04-2012, 08:43 AM	#1
denverizzles Senior Member Join Date: Jun 2012 Drives: 2013 FR-S Location: Chicago, IL Posts: 206 Thanks: 32 Thanked 77 Times in 37 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Subwoofer placement and car balance So i've been looking to add a sub to my car, but i'm wondering if the placement of the sub would change the balance of the car. If you're going to add lets say 30lbs to right rear of the car, would that shift the way the car handles during autox? anyone have experience with this?

09-04-2012, 10:22 AM	#2
Spaceywilly ZC6A2B82KC7J Join Date: May 2011 Drives: 2002 WRX Location: Providence, RI Posts: 1,632 Thanks: 361 Thanked 727 Times in 236 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Make it removeable. When I have done autocross they made me take out my sub anyways. __________________ Straights are for fast cars. Turns are for fast drivers.

09-05-2012, 09:54 PM	#7
cgrey Senior Member Join Date: Jun 2012 Drives: 2013 Argento Silver FR-S Location: NYC Posts: 286 Thanks: 41 Thanked 203 Times in 74 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Last edited by cgrey; 09-05-2012 at 10:18 PM.

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09-04-2012, 11:29 AM	#3
YW-Slayer Senior Member Join Date: May 2012 Drives: 2013 BRZ (MT, WRB), 2005 Legacy B4 Location: Hong Kong Posts: 122 Thanks: 55 Thanked 28 Times in 14 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Mine's in the rear left. Can't say I've noticed a big difference, but it's not like I've been doing 3X7R3m3m1e111!111!111 trackday driving all-day, everyday.

09-05-2012, 03:37 PM	#6
Niko Junior Member Join Date: Aug 2012 Drives: one Location: Cleveland, OH Posts: 8 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Go for dual 8's or 10's, one on each side

09-05-2012, 10:13 PM	#8
MrBodyMassage Member Join Date: Jun 2012 Drives: 1994 Toyota MR2 Turbo, WRB BRZ Lim Location: Memphis, TN Posts: 60 Thanks: 17 Thanked 44 Times in 15 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	With a driver the car weighs ~2900 lbs. 30/2900 = 0.103 or 1.03%. You're changing the weight of the car by 1%. Would an F1 driver notice? Yep, probably. Would you or me? No. Do you notice a difference when you put a suitcase in the trunk? Me neither.

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