This is how the Infinity components fit into the 4"x10" dash opening. 5.25" woofer and 1" tweeter
Woofers with BIG magnets can cause clearance problems with the HVAC duct on the driver's side.
It may be necessary to heat the duct with a heat gun and bend it in slightly.



This is how the Infinity components fit into the 4"x10" dash opening. 5.25" woofer and 1" tweeter on a speaker plate made from 3/16" hardboard.

I've done up a template that can be used to cut out dash plates. The hardboard can be pretty fragile, especially around the 5.25" cutout, so alternative materials such as 1/4" ABS plastic could be used.



The file is in MS Word format and will print in proper scale on regular letter size paper.
DOWNLOAD the file from here: http://www.fierosound.com/speaker%20plate.doc

Let us know how this works out for you...

------------------

3.4L S/C 87 GT www.fierosound.com
2002/2003/2004 World of Wheels Winner &
Multiple IASCA Stereo Award Winner

[This message has been edited by fierosound (edited 10-10-2013).]

I want to do this but im a little incompetent on audio so how would you hook both of these speakers up on one channel? Thanks for the template.

quote Originally posted by daniel87fierogt: I want to do this but im a little incompetent on audio so how would you hook both of these speakers up on one channel? Thanks for the template.

Any component set will come with a passive crossover - 2 wires in, 4 wires out.
2 to the woofer, 2 to the tweeter. This is the Infinity KAPPA 50.7CS set I installed.



The woofer has a Neodymium magnet and heatsink. Very compact.

[This message has been edited by fierosound (edited 09-16-2010).]

Sitting around reading links and I decided to print out your template, I gotta say the time you put into this shows in the quality.

Very impressive, +4U.

Steve

------------------

Where will the road take you today?

Some helpful links I've done
How to remove inner door panels, with pics.
How to remove outer door panels, with pics.
How to make rear coil-overs using factory struts, with pics.
How to remove rear bearing hubs, with pics.
How to modify the stock Fiero radio for MP3 players, with pics.
How to come up with the right coolant hoses for that engine swap...With Pics.

quote Originally posted by fierohoho: I gotta say the time you put into this shows in the quality. Very impressive, +4U.

Thanks. Cut one out of cardboard first. It gives you a good idea of how it fits in the dash. Have fun!

^^^

How does this sound compared to a quality 4x10 coaxial?
Also, how does a good 4x6 plate compare to a 4x6 coaxial?

thanks.

quote Originally posted by Knight: How does this sound compared to a quality 4x10 coaxial? Also, how does a good 4x6 plate compare to a 4x6 coaxial? thanks.

I had the same question. How do they compare to having Sony Xplod's (don't like the brand for speakers) or Pioneer 4"x10"? Or 4"x6"?

I'm assuming 2-way is needed to have a decent range and sound quality from the speakers.. Right?

-M

Will a 6" or a 6 x 9 fit under this area in the dash with adapter plate holding it to the bottome of the dash ?

------------------



87 Fiero GT 5sp with Vortec L35 4300 Turbocharged V6
Bully Stage 2 clutch
Syclone intake manifold and engine management with Moates adapter and chip burner
Air/water intercooler and Devil's Own progressive water/alky injection
50lb injectors, 3 bar map sensor, Walboro fuel pump and Jabasco Intercooler pump
LM1 wideband on custom manifolds and 3" stainless exhaust system
T31/T04B S4 turbo with a Super T61 in the box
S10 caliper conversion.
Murphy's Constant Matter will be damaged in direct proportion to its value
Murphy's Law of Thermodynamics Things get worse under pressure.
Arthur C. Clarke "Any significantly advanced technology is indistinguishable from magic"

Great job you did!!
++ for you

Justin

quote Originally posted by Knight: How does this sound compared to a quality 4x10 coaxial? Also, how does a good 4x6 plate compare to a 4x6 coaxial? thanks.

I installed a set on Eclipse 4"x10" tri-axials first. Sounded pretty, good, but these Infinity's blow them out of the water. In general, a quality set of components will produce better, more accurate sound than a co-axial. A round woofer can play louder than an oval speaker with less distortion. Install components for the front and 4"x6" plates for the rear.

The 4"x6" plates will also fit better in the pillar because the space is quite shallow and larger magnets on a co-axial don't always fit (too deep). The space is deeper in the lower section of the pillar behind the speakers. Because the plate mounts the woofer off to one side, mounting the speaker in the pillar with the woofer in the lower side of the opening usually fits.

[This message has been edited by fierosound (edited 04-03-2007).]

Thanks for the template..nice job!

I did this a few years ago with a set of 4" Kappa components. At the time I had access to a laser cutter/engraver so I cut mine out of 1/8" plexiglas and did some decoration with paint and the laser:



You can probably find someone nearby that has one of these lasers that would cut out a pair for you for a reasonable price, especially nice if you compete in any stereo competitions.

~edit~ to add a shot of the 4x6 plates referred to in the thread:


------------------
http://www.raceme.cc/helmet/

[This message has been edited by helmet1978 (edited 04-03-2007).]

Perfect timing. Just what I needed. Thanks for the info!

I feel an upgrade coming on!

Thanks!

------------------
Raydar
88 4.9 Formula IMSA Fasback..........................88 3.4 coupe -soon to be something other than red

Read Nealz Nuze! Praise the Lowered!

Bump

Hi
I attempted to download and print the template and I am requested a "password"
Help appreciated
sparx22

quote Originally posted by fierosound: This is how the Infinity components fit into the 4"x10" dash opening. 5.25" woofer and 1" tweeter I've done up a template that can be used to cut out dash plates. I used 3/16" hardboard. The file is in MS Word format and will print in proper scale on regular letter size paper. DOWNLOAD the file from here: http://www.fierosound.com/speaker%20plate.doc Let us know how this works out for you...

quote Originally posted by sparx22: Hi I attempted to download and print the template and I am requested a "password" Help appreciated sparx22

There's no password attached to the file. Download from the link by "Right-Click - Save As" to save to your machine. After it's saved, opening it should bring in on screen in MicroSoft Word. Do you have MS Word protected?

quote Originally posted by fierosound: There's no password attached to the file. Download from the link by "Right-Click - Save As" to save to your machine. After it's saved, opening it should bring in on screen in MicroSoft Word. Do you have MS Word protected?

Can someone give this guy a + for the hard work and a good idea? - I already had him down for a +++ for the muffler suggestion for my 3800sc engine build

bump

[This message has been edited by fierosound (edited 09-16-2010).]

I'm in the process of doing this with Infinity reference 5.25 and they are not playing nicely. has anyone else had trouble especially on the Drivers side? seem like the back of the instrument panel housing is in the way.

quote Originally posted by fierosound:

just noticed the words printed on there...

-Dave

quote Originally posted by Scottzilla79: I'm in the process of doing this with Infinity reference 5.25 and they are not playing nicely. has anyone else had trouble especially on the Drivers side? seem like the back of the instrument panel housing is in the way.

Big magnets on those speakers?? Likely hitting the HVAC duct on the back of the dash.
White88Formula had the same problem here: https://www.fiero.nl/forum/F...2/HTML/106287-2.html

Fierosound this may have been asked before but what do you recommend for subs and speakers? im assuming you would recommend the Infinity KAPPA 50.7CS for the speakers...but what about subs? you've read some of my posts and I'm looking for good...for lack of a better word...'' bump '' I want quality base that still punches. I'm beginning to think my 12" comp subs should and would be better used in a different car.

------------------
Cliff's 610th Positive Feedback Giver.
#12 NYFOC Member
In recent times, the custom aftermarket car/automobile roadwheel has become a status symbol. These wheels are often incorrectly referred to as "rims". The term "rim" is incorrect because the rim is only the outer portion of a wheel (where the tire is mounted )

quote Originally posted by Hockaday: ...but what about subs? you've read some of my posts and I'm looking for good...for lack of a better word...'' bump '' I want quality base that still punches. I'm beginning to think my 12" comp subs should and would be better used in a different car.

I have 10" Oz Audio subs - not longer available. And since I'm not "in the industry" I have no first hand knowledge on direct comparisons. The industry really screws things up too with over-inflated numbers because it "sounds like MORE" to the uninformed person (using PMP "Peak Music Power" (what it will take/make before it blows up) watts instead of RMS watts). Ignore the BIG numbers, and use the RMS watts ratings whenever matching speakers/subs to amplifier power.

But general guidelines:

- in a Fiero, two 10" subs are plenty AND easier to fit and have a wide selection.
- you DO NOT need 1000 watt subs (likely a PMP rating anyway). 100-250 RMS watts per sub is plenty provided your amp puts out 250 RMS watts per channel. (300 RMS amp to a 250 RMS sub is OK)
- To me - efficiency rating is more important (rating is deciBels per 1 Watt measured from 1 meter away). 89 dB/W/m is more efficient (and louder) than 83 dB/W/m at 1 Watt.

See what the guys in the Subwoofer forum are talking about. Search forum using "small enclosure": http://www.caraudioforum.com/

[This message has been edited by fierosound (edited 09-06-2010).]

quote Originally posted by IFLYR22: just noticed the words printed on there... -Dave

I didn't see any words

quote Originally posted by fierosound:

She really needs to sweep those stairs. All the debris could be a potential hazard. Oh yea.......nice.........color on the sweater in that pic too!

quote Originally posted by Scottzilla79: I'm in the process of doing this with Infinity reference 5.25 and they are not playing nicely. has anyone else had trouble especially on the Drivers side? seem like the back of the instrument panel housing is in the way.

I just printed and cut the plates but also didn't work with the Boston S50 I used. I guess the magnet and depth of those Infinity gotta be very small. At the end I had to move the speakers toward the center. The template is good but don't cut the speaker holes until you measure several times.

quote Originally posted by Alex4mula: I guess the magnet and depth of those Infinity gotta be very small.

Yup - BIG magnets may cause a problem. The Infinity 50.7CS I used have a Neodymium magnet and heatsink. Very compact. Some on eBay.

[This message has been edited by fierosound (edited 09-19-2010).]

.

[This message has been edited by infinitewill (edited 08-30-2016).]

quote Originally posted by infinitewill: Tony, I cut a few sets of your speaker plates out of 3/16" aluminum on a water jet.

MAKE AND SELL THESE!!!!

quote Originally posted by TheRealShadowX: MAKE AND SELL THESE!!!!

What he said!

.

[This message has been edited by infinitewill (edited 08-30-2016).]

I was just wondering. If the Fiero sound system was to be redesigned, from scratch. How would one go about doing it? Is there a better speaker placement then the dash? Should speakers be placed in the doors or the foot wells? How about tweeters in the A-pillars?

I'm just rambling! But I would like a better sound stage and I am redesigning the interior of my Fiero. So now would be a good time to figure out speaker placement.

On another note: what is this muffler system that is being talked about? I have a 3800 SC and it is a little to loud.

Thanks!

quote Originally posted by infinitewill: I cut a few sets of your speaker plates out of 3/16" aluminum on a water jet. I noticed you had recommended the Infinity 50.7 which is now discontinued, do you by chance know if the 50.9CS larger magnet will interfere on the driver's side?

Looks very good Will. But I'd have cut the holes after buying the speaker set,
because they should be sized for the tweeter and midrange you will be installing.

There can be fitment problems with larger magnets - interference with the HVAC duct.
Nothing that can't be fixed with a heat gun.

[This message has been edited by fierosound (edited 01-06-2023).]

quote Originally posted by infinitewill: That will never happen

Oh, don't be such a tease babe. (Limp wrist flick)

Haha, juuuust kidding, but seriously, how come?

quote Originally posted by fierosound: Looks very good Will. But I'd have cut the holes after buying the speaker set, because they should be sized for the tweeter and midrange you will be installing. There can be fitment problems with larger magnets - interference with the HVAC duct. Nothing that can't be fixed with a heat gun. See here: https://www.fiero.nl/forum/F...2/HTML/106287-2.html

Thanks for the tip on the heat gun Tony I received my speakers Sat. and the components fit perfectly. I have been waiting on the stereo upgrade as my head unit needs be upgraded as well. The rear speakers will be next. I haven't really decided what I am going to do about subs at this point.

Dr. W.

------------------
Is your Fastback GT's trunk seal shot? My Gen III replacement GT trunk seals with solid molded corners are now in production. $95 + $15 flat rate shipping to the US (contact me for international shipping rates) or buy two and pay only a single shipping rate! More info can be found here GT Trunk Seal Project

https://www.fiero.nl/forum/Forum2/HTML/122103.html

BUMP

Get plates here --->>> https://www.fiero.nl/forum/Forum2/HTML/122103.html

[This message has been edited by fierosound (edited 04-15-2012).]

quote Originally posted by fierosound: Any component set will come with a passive crossover - 2 wires in, 4 wires out. 2 to the woofer, 2 to the tweeter. This is the Infinity KAPPA 50.7CS set I installed.

what's a good rear 4x6 (infinity, want to stick with the same brand as 507CS) to complement the 5.25?

thanks

[This message has been edited by Tom Slick (edited 04-30-2012).]

quote Originally posted by Tom Slick: what's a good rear 4x6 (infinity, want to stick with the same brand as 507CS) to complement the 5.25?

Refer to this thread: https://www.fiero.nl/forum/A...090907-2-088293.html
I have a Reference 462.1cf set in my GT - now discontinued. http://www.crutchfield.com/...y-Kappa-462-1cf.html

There's a lot less choice in 4"x6" plates than there used to be. Infinity, Polk Audio, Pioneer are usually good brands.

But magnet size and depth is critical because there is minimal room in the sail panel - TOO BIG a magnet won't fit.

This Pioneer looks good. Anyone using this???
http://www.onlinecarstereo....Ko3q8CFQZ_hwodBEhpBQ

JBL 4x6 plates appear to be really deep (about 1-3/4" maximum will fit)


This INFINITY REF 6432CFP has a monster sized magnet that I don't imagine will fit.

[This message has been edited by fierosound (edited 05-01-2012).]