490 Hi-Fi sound system
#1
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Thread Starter
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what does option 490 Hi-Fi sound system consist of?
Speakers only, or are there amps hidden somewhere?
Anything special to consider when connecting a new head unit?
mm
Speakers only, or are there amps hidden somewhere?
Anything special to consider when connecting a new head unit?
mm
Last edited by gruffalo; 02-20-2011 at 02:53 PM.
#3
Race Director
#4
Nordschleife Master
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Brian - I have an '87 that did not come with the hifi option. However it is unusual, and I suspect the car was specifically ordered without it, rather than it being an option other buyers actually chose.
It has the same perforated door panels and hidden 4 speakers as the early cars. Interestingly, it has the hifi-option harness with all the DIN connectors under the passenger cover, and a special extra harness which connects all the DIN connectors so that the speakers are wired from that point.
#5
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Does anyone have any suggestions on a good aftermarket amp for the 8 speaker system, and where to put it? What would be the best watt size and how many channels should I look for? I prefer a smaller amp but good qaulity. I just want a clean and even amplified sound. I will be using a 200 watt head.
#6
Nordschleife Master
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Does anyone have any suggestions on a good aftermarket amp for the 8 speaker system, and where to put it? What would be the best watt size and how many channels should I look for? I prefer a smaller amp but good qaulity. I just want a clean and even amplified sound. I will be using a 200 watt head.
Sadly, I've yet to find anything that will fit in the stock location and provide at least 4 channels.
The closest I've come up with is possibly extending the passenger side cover's length (using fiberglass and new carpet) and using a long narrow 4-channel amp, like the Arc KS 125.4 Mini (which is only 5 inches wide), to power the factory speaker locations. Then if I decide to, later I can bridge two channels to run a sub, and use the head unit to power the door speakers.
Otherwise, its fit something larger in a non-stock location, but I'd prefer not to have an amp mounted on top of an interior surface, nor in the spare wheel well (I carry stuff like puncture repair kit, compressor etc. in there - here in Oz a spirited drive will easily put you 3+ hours from a tow truck).
#7
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That was standard setup for some LHD ROW markets in '87 MY. M490 did cost extra same way like M454 cruise control which also became standard next MY I believe.
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#8
Drifting
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Try search for "Dr Audio"
I saw a thread last week that was a really cool build.
My car has the 10 speaker option
I installed all new speakers, deck, amp and sub
I saw a thread last week that was a really cool build.
My car has the 10 speaker option
I installed all new speakers, deck, amp and sub
![](http://i103.photobucket.com/albums/m158/bwmac/Brads%20Porsche/IMG_0332.jpg)