I highly recommend auto parts warehouse bought a dash speaker replacement and so far no complaints

Just for reference ...

You can order complete M490 option dash speaker replacements from Porsche that includes both speakers and the grille (and plugs right in) for $58.85 each

left: 996 645 037 02 01C

right: 996 645 038 02 01C

see http://www.gaudinporscheparts.com/partlocator/index.cfm?siteid=215796

In addition the Metra wiring adapter to facilitate hooking up aftermarket speakers is 71-017C

Metra 71-017C Speaker Wiring Harnesses For select 1989-09 vehicles at Crutchfield.com
http://a248.e.akamai.net/pix.crutchf...2071017-f.jpeg

It looks like the Infinity speaker's tweeter can be adjusted to angle from firing straight at the windshield and towards the listener. Were you able to do this without the grill getting in the way?

TIA
BK

No fit problems with the Infinity speakers
as far as pointing the tweeters to the listener, well the speakers face up and the sound bounces off the windshield so the angling has little effect

Nice write up..I'll be doing this as this is what I discovered was causing a buzzing sound out of this speakerhttp://986forum.com/forums/uploads01...1448203378.jpg

I can see part of my dash speaker paper cones through the windshield, and guess that the missing grill fabric will be on the speaker. If you found this, did you replace the speaker cloth, or remove what was left, or just leave what was there as is?

I wood knot wory about any speaker clothe
Allthough it wood keep dirt off of the speker

Nicely played.

Hey Guys,

Pardon my slightly off-topic post.

Could one of you point me to a post that shows some step-wise dismantling of the lower dash? I need to get to the throttle position sensor and remove it for my EV project and the lower dash with the plastic ducts are coming in the way. I looked around yesterday a bit and it was not easy to figure out. I am guessing you'll working on the wiring around there may have some info...Thanks!

Not sure about lower dash removal but the AC duct above steering column simply pulls apart.

Hi dgjii,

Thanks for your response. I tried pulling the AC duct apart and could not in the confined space. Granted I did not yank it too hard. Will try again.

It would be great of I can remove the lower part of the dash (to which the OBDII connector is bolted) as I need to remove the pedal, pedal position sensor etc. and attach a 'potbox' to the cable and fit the whole assembly back. Mostly will use the existing bracket to mount the 'potbox'.

For those not familiar with the potbox, it is a simple Potentometer which provides an output based on the throttle position. The output is fed to the DC motor controller to control the motor speed. In my case the Curtis potbox gives an output of 0-5Kohm that is matched with my motor controller. It is therefore that I cannot use the stock fly-by-wire throttle as that, I think, has an electrical output that controls the butterfly in the Throttle body.

Thanks.

Please start a new thread rather than hijacking this one ^^^

Hello all

Great DYI!

I just check the dash speakers on my 1999 base and they are like thstone's, but they are made by Nokia (Made in Germany). They look in very good shape, visually and sound OK to my ears. Are these OEM speakers since they're made by Nokia vs Thstone's HAES?

Also, if I decide to replace them and I get 2 channels, is there any benefit of keeping functioning the OEM tweathers? Will it distort or take away from the signal quality? What did others do with the tweathers and did they regret keeping/disactivating them?

Thanks

So i just charged the dash speakers with Pioneers 4" TS-G1044R, following these exact instructions. The first speaker took me 2 hours but I was taking my time. Used hot glue to hold them in place. The second speaker took me 15m. I did not reconnect the small tweeters as the Pioneers are 2-way.

The 16 years old speakers initially looked good but upon inspection they were ripped. The new speakers sounded odd at first but I realized I has inverted polarity. All good now. They sound much better than OEM. I know have the rear deck speakers and the new dash speakers and they sound very good.

Any suggestions for the doors' woofers? Any suggestions as for Brand and how-to?

Thanks.

I just replaced all my speakers in my 2001 S - right front had reduced audio, the doors seemed OK and I have the aftermarket speakers in the package shelf which a couple were shot.

I used a Dremel to carve up the front stock speakers (as presented easier in this post) without a hitch. I added Alpine speakers

The rear were replaced with 4 3.5 Kicker speakers

And JBL 4" in the doors.

Quick and easy project that sounds so much better!

Vince

Door Speakers questions
 

What did it take to get the 4" door speakers installed:
Did you create a new panel to mount them on or did you use the Dremel to carve up the existing door woofer?
Which JBLs did you end up using?
How's it sounding?


TIA - BK

Replaced OEM Nokia speakers with Alpine SPS-410, no improvement.
 

Replaced OEM Nokia dash speakers with Alpine SPS-410's (a speaker I've seen recommended on forums.) At lower volumes the stock Nokias are a little brighter. At high volumes the Alpines were a bit less muddy. Overall it wasn't worth the hassle, but, of course that would be different if the stock speakers were trashed. The ones on my '98 must not have been.

The Alpines have low sensitivity, similar to the stock Nokias. I'm going to try Infinity reference speakers next, which are several times more efficient. Hoping the lower energy requirements of the Infinitys are coupled with improved performance.

Replaced Alpine SPS-410 with Infinity Reference 4002CFX. The Infinities are slightly lower rated for power (35 watt continuous vs. 45 for the Alpines) but have a much better sensitivity of 92db vs. the Alpine's 86db. That 6db difference equates to 4 times the volume at the same input power level. This means the amp doesn't have to be driven so hard to produce the sound.

The improvement in midrange is considerable. This really helps "fill out" the sound, from the rear speakers. Even at the highest volume level the Alpines could not produce the same amount of low/midrange as the Infinities do at half volume. The Infinities are rated at 75-21kHz. The Alpines at 97-22kHz.

One note, the Infinities are a slightly deeper speaker and magnet bottomed out on the passenger side (1 7/8" vs. 1 11/16".) It doesn't seem to cause any issues with output or vibration noise. If I were to do it again I'd look for a shallower 4" speaker with the similar efficiency and performance.

When you mention speaker bottomed out, does it hit the bottom of the well? Is there any even a bit of space to cushion it with rubber or ?

I need to investigate further. It is either the well or a screw sticking up inside well. Yesterday it picked up a buzz (only on really high volumes) so I'll need to go back in and see if I can make more room or insulate it like you suggest. Unfortunately I sold my box of sound deadener because I thought I wouldn't be using the rest of it.

One other thing re. Infiniy speakers. They have a switch to attentuate the treble by +3db (basically 2 times louder.) By default, it was set to the attenuated position. That is too brassy. Need to go back and turn that off.

I Have the same Infinity speakers and they fit fine.
I did mount them differently, using an adapter plate I made and IIRC, it's 3/16 thick

Just bought some Hertz speakers for the dash. I'm wondering if with the increased sensitivity that the door speakers may be too quiet in comparison. What have those of you with hi sens units found?

@Disaster, I'm deciding between Alpine and Infinity Reference. Are IR still superior to Alpines considering I don't have door & rear speakers?

6 of one, 1/2 dozen of another

They are both far superior to the factory speakers

IIRC, the Infinity may be a a few db more efficient

Fwiw - I chose Helix speakers for the dash because they sounded better than any of the coax competitors. Fit perfectly.

Just replaced factory speakers with Infinity Reference ones. What a difference! IR are bulkier than Alpines, but it wasn't a problem connecting & installing them at all.

How much work is it to install subwoofer, door & rear speakers (right now I don't have any of them)? Can it be done without buying an amp?

Congratulations! Following this thread, as I will be doing HU, speakers, amp and subwoofer upgrade.

Reviving an old thread , recently noticed a crackling noise from the passenger side dash speaker . Read this post and others to make sure I understood how to mount the aftermarket speakers . I ended up buying Cerwin Vega H740's . Online reviews were good and price delivered to my door was very reasonable . Installation went exactly as described by others in this posting . I ended up using clear silicone to mount the speakers to the OEM holders . Let them dry overnight then I bent the 4 ears over the OEM mounts .

Wiring was a snap and the speakers sound very good . I'm not an audio expert so my ear is far from being trained :D But to my ears these sound good . To be honest I much rather listen to the engine revving than the radio but in traffic the radio is a nice companion . These are the speakers I purchased .

https://www.sonicelectronix.com/item_135747_Cerwin-Vega-H740.html