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Discussion Starter #1
Hey y'all,

Brand new to the forum, and didn't see this question posted anywhere. I just bought a 99STS, which I am VERY pleased with. However, I am experiencing a weird problem with my front dash speaker. Only when the car is cold (I'm in Ohio) the front speaker will hiss when music with high tones is played. (most notable with a woman's voice) Once the car has been in the sun for awhile, the hiss goes away. I have not tried anything as of yet, and was just going to go ahead and replace the speaker, but could not find the part number in the online parts catalog I found.
Any help would be greatly appreciated...or just knowing that someone else out there has seen something similar. I love the car, and just want everything to work perfectly!!:crying2:
 

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2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
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Hey thanks for the welcome i kno alot about car audio myself (i installed subs in the trunk of my ETC) my dad has a 98 STS with Bose and it has 3 speakers mounted on the dash. Is yours a Bose and if so which one of the 3 is it if not i think you just have a center channel speaker right?
 

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05 STS V8 1SG with ACC, 99 STS (Sold), 06 CL500 (Wifes)
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I had the same problem with all 3 bose tweeters. One after the other. They blow real easy. Replace with after market. I have 1 extra JBL 1 inch. Just replace all 3 of them. It is a real bitch getting to them. I paid 70 for 2 of them. I will sell you the extra one for 15 + fair shipping. They sound great. [email protected]
 

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Discussion Starter #5 (Edited)
Thanks for the follow-up, guys. It is a Bose 3-speaker setup on the dash, and it's the middle speaker giving me trouble. Do you know what size that speaker is CadillacETC1997? Also, why would it not buzz when it's been sitting in the sun? Is it an "expand and contract" kind of thing?

Ben, I may take you up on that if needed. Thanks.

Piper
 

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2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
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When speakers are hotter or after they are played for awhile the voice coils heat up when they are hot they get distorted giving you the bad sound. Odds are its blown out. I kno even though it looks oval its really a small round speaker im not sure of the size ive seen a complete dash pad posted on ebay with the speakers. You prob with some fabrication could use a infinity kappa speaker 4x6 in there or a round one of the same size. Kappa series are the only ones that will work with stock Bose systems. Hope this helps if you need more info id be glad to help.
 

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Check the speaker specs. I beleive bose car audio is 2 ohms - which essentially is a more taxing load for the amplier. Typical car audio speakers only draw a 8 or at most 4 ohm resistance. Check these items out, because if the new speaker you replace the bose with has a lower impedance (i.e. 8 ohms), it will be much louder than the other original speakers in your car. Other than that, it would probably not cause damage to the amp, just sound awful. A workaround you may look into to retrofit impedence mismatched speakers would be to put a resistor inline with the new speaker to pull up the load to whatever it needs to be (ex. 2 ohms).

Good luck and have fun ripping the dash apart in the freezing weather under a snow drift.
 

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Discussion Starter #8
Thanks for the help guys. To further expound on adding a risistor inline...is it a 1-to-1 ratio for that. For instance, if I use a 4 ohm speaker, will a 2 ohm resister take me to net 2 ohms?

For CadillacETC1997, I take it that Kappa is a speaker made by Infinity? I appreciate all the help, and hope you get over your mono quickly!

(somewhat ironic to be helping me with a stereo problem when you have mono):thumbsup:
 

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2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
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heh its no biggie just sucks when i have to swallow ya kno and the whole not bein able to kiss my gf for like 6 mths really sucks. As for the speakers yea Infinity Kappa, JL Audio Rockford Fosgate and Kicker make real good speakers too, however Infinity Kappas can handel the most wattage those other brands can't and because im not sure how many watts are being pushed to that one speaker i cant make a really good choice other than Infinity Kappa to be safe.

P.S. MAKE SURE YOU GET KAPPA SERIES NOT THE REFRENCE SERIES THEY BOTH SOUND GREAT BUT KAPPA HANDELS MORE POWER
 

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Yes, you can throw a 2 ohm resistor in PARALLEL with the 4 ohm speaker and then you're impedence matched to the other BOSE 2 ohm speakers. Again, I'm guessing the bose speakers are two ohm. Throw a multimeter on one of the good ones (or the bad one if you absolutely have to) and set the meter to the 20 ohm max bipolar range. You'll read something like 1.7 ohms across the terminals if it's a 2 ohm speaker. Don't forget, wire the resistor in parallel and you decrease the number of ohms, wire it in series and you increase the ohms.

Oh, just to be safe, get the biggest current handling capacity on that resistor you can find. Ask the radio shack people, they're actually good folks.

Cheers
 
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