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Dash/ front speaker removal- broken speaker mag / impedance

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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steve
Posts: 126
Joined: 27 September 2003
Year and Model:
Location: Broadway, Virginia

Post by steve »

Robert: You are correct. I found that the front dash speakers are 8 ohms and wired directly to the radio. The front door speakers are 4 ohm and are also wired directly to the radio.

Here's the tricky part: The Rear door speakers and the rear deck speakers are both 8 Ohms and they are wired in parallel as you have warned against.

The Crutchfield Rep said that replacing a 8 Ohm with a 4 Ohm speaker when wired directly would be OK. He said that so long as the amplifyer saw at least 4 ohms or greater things would be alright.

THIS DOES NOT HOWEVER APPLY TO MY REAR SPEAKERS WHICH ARE WIRED IN PARALLEL. If I replace both of the 8's with 4 ohm speakers the radio will see only 2 Ohms which I feel, and as you have pointed out, will cause the amp to overheat and burnout eventually.

I have already replaced my amplifier chips in my radio once already and do not want to have to do it again.

SO, what is a fella to do?? Anyone have a source for 8 Ohm car audio speakers??

I am going to call the same rep at Crutchfield on this parallel wiring situation and see what he has to say for himself.

Anyone??

S
2007 XC70 21,000 Miles



Previous:

1993 850GLT, bought new

133,500 Miles & 15 great years of service

MadeInJapan
MVS Moderator
Posts: 13434
Joined: 31 March 2005
Year and Model: '98 S70 T5 '07S40T5
Location: Knoxville, TN American but born in Japan
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Post by MadeInJapan »

For those needing speaker replacements, look on eBay. I see them all the time for our cars. Also, if you want to upgrade, Crutchfield.com is very good. You may want to go to their site, get their toll free number so you can actually talk to someone about options. My understanding is that they know about the ohm differences in our systems.
'98 S70 T5 Emrld Grn Met/Beige Tons of Upgrades Mobil-1
'04 V70 2.5T Red/Taupe Some Upgrades Mobil-1
'07 S40 T5 AWD 6 speed manual! Silver/Black Stage1 Heico & Elevate
'07 S60 2.5T Blue/Taupe- my kid's Volvo

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