Need help fellas

virtuosoondis · 09-18-2014, 09:28 PM

Wondering what box to go with for two Rockford 10" subs.the up fire one or the one facing the rear.thanks guys.what's the difference?

bigaudiofanat · 09-18-2014, 09:50 PM

Rear firing will give you louder sound as it will be forced to redirect to the front. Zenclosure makes a few boxes for what your trying to do

virtuosoondis · 09-19-2014, 01:39 AM

Appreciatte u bro.so whats tge benefits of upfire?

clkio · 09-19-2014, 07:26 AM

Quote:

Originally Posted by virtuosoondis

Appreciatte u bro.so whats tge benefits of upfire?

I think you can fit 2 12" with the upfire box and some people like it facing up, I dont.

bigaudiofanat · 09-19-2014, 08:49 AM

Not as loud I know that much can not go into the details of why as it's been a while sense I was asked that.

SouthArk370Z · 09-19-2014, 12:15 PM

Because of the way we perceive sound, woofer placement is not critical. While there will be some slight differences in sound, depending on which way the woofer is facing, it's not going to make that much difference in a car. I'd avoid top-firing setups just because of the dust that will collect and the possibility of dropping something on the cones. YMMV

RonRizz · 09-19-2014, 04:23 PM

What he said. Difference in noticeable volume is negligent. Up, down, sideways, upside down, front, back, its all good. either way that sub is 2 to 3 feet from your ears.....

axmea? · 09-20-2014, 12:32 AM

Generally, our ears and brain will not be able to tell a significant difference especially in a small car like the Z. Technically however, it should sound louder. In the Z, hard to tell exactly by how much unless you measure. If you use an RTA, you will see a clear distinction. There is a tendency for most lower frequencies not to be affected whether the sub faces up or towards the rear. Not sure exactly what it would be for the Z. Acoustics make a big difference. A point I'd like to make, you cannot rely entirely on on sub positioning and should more importantly take into account your enclosure, gear, and processing. My suggestion is to experiment positioning before you lock down on your design. Just want to share a couple of tech papers I have relied on in the past.

http://www.sound-better.net/Tech%20P...aper%20101.pdf

http://www.sound-better.net/Tech%20P...aper%20103.pdf

09-18-2014, 09:28 PM	#1 (permalink)
virtuosoondis Enthusiast Member Join Date: Jun 2011 Location: texas Posts: 301 Drives: 11 black nissan 370z Rep Power: 14	Need help fellas Wondering what box to go with for two Rockford 10" subs.the up fire one or the one facing the rear.thanks guys.what's the difference? __________________ from dat 671

09-18-2014, 09:50 PM	#2 (permalink)
bigaudiofanat Car Audio Installer Join Date: Jun 2009 Location: Magnolia DE Posts: 8,342 Drives: 2012 Infiniti G37x Rep Power: 853	Rear firing will give you louder sound as it will be forced to redirect to the front. Zenclosure makes a few boxes for what your trying to do __________________ Need help with car audio or electronics? Let me know!! Need Help Let Me Know Direct email address reimermatt@gmail.com Owner of: Dynamic Mobile Audio Follow me below https://www.facebook.com/Dynamicmobileaudio/

09-19-2014, 01:39 AM	#3 (permalink)
virtuosoondis Enthusiast Member Join Date: Jun 2011 Location: texas Posts: 301 Drives: 11 black nissan 370z Rep Power: 14	Appreciatte u bro.so whats tge benefits of upfire? __________________ from dat 671

09-19-2014, 08:49 AM	#5 (permalink)
bigaudiofanat Car Audio Installer Join Date: Jun 2009 Location: Magnolia DE Posts: 8,342 Drives: 2012 Infiniti G37x Rep Power: 853	Not as loud I know that much can not go into the details of why as it's been a while sense I was asked that. __________________ Need help with car audio or electronics? Let me know!! Need Help Let Me Know Direct email address reimermatt@gmail.com Owner of: Dynamic Mobile Audio Follow me below https://www.facebook.com/Dynamicmobileaudio/

09-19-2014, 12:15 PM	#6 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Because of the way we perceive sound, woofer placement is not critical. While there will be some slight differences in sound, depending on which way the woofer is facing, it's not going to make *that* much difference in a car. I'd avoid top-firing setups just because of the dust that will collect and the possibility of dropping something on the cones. YMMV __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

09-19-2014, 04:23 PM	#7 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,136 Drives: 2 feet, 3 pedals Rep Power: 6775	What he said. Difference in noticeable volume is negligent. Up, down, sideways, upside down, front, back, its all good. either way that sub is 2 to 3 feet from your ears..... __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

09-20-2014, 12:32 AM	#8 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,235 Drives: WELL ZED PW 6MT Rep Power: 53241	Generally, our ears and brain will not be able to tell a significant difference especially in a small car like the Z. Technically however, it should sound louder. In the Z, hard to tell exactly by how much unless you measure. If you use an RTA, you will see a clear distinction. There is a tendency for most lower frequencies not to be affected whether the sub faces up or towards the rear. Not sure exactly what it would be for the Z. Acoustics make a big difference. A point I'd like to make, you cannot rely entirely on on sub positioning and should more importantly take into account your enclosure, gear, and processing. My suggestion is to experiment positioning before you lock down on your design. Just want to share a couple of tech papers I have relied on in the past. http://www.sound-better.net/Tech%20P...aper%20101.pdf http://www.sound-better.net/Tech%20P...aper%20103.pdf SouthArk370Z likes this. __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete Last edited by axmea?; 09-20-2014 at 12:35 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Need help fellas	virtuosoondis	Wheels & Tires	1	08-23-2014 10:29 AM
Mid-A Fellas help me out please!	Glokwork	Mid-Atlantic Region	25	10-05-2012 10:22 PM
What up fellas?	Three7D	New Forum Member	18	12-15-2010 11:49 PM
Need help fellas!	tbonesteak	Southern California Region	15	03-17-2010 05:54 AM
help fellas? with my 370	FuPaXxTyTy	Exterior & Interior	8	01-06-2010 08:09 PM