MINI2

kshapiro · Aug 27th, 2002, 07:41 PM

When I use my AM radio, it sounds like I have blown speakers. You know, rattling cones, buzzes, etc. It's not any one speaker as I've done the right, left thing and it's coming from both, and therefore sounding like it's in the dash center. When using FM and CD thee's no problem whatsoever, not even at heavy volume. If I remove the antennae while using AM, the reception worsens (of course), but the buzzing and rattling go away.

????????????????????????

Dom · Aug 28th, 2002, 05:36 AM

Do a search in the faults and fixes problem, I think it's been mentioned quite a bit before.

Dom

snoopy · Aug 28th, 2002, 07:01 AM

Hi I am putting this question here, as the other thread in Faults and fixes might not get enough responses.

Now any of you guys that have changed for head unit how is your AM reception. Do you suffer from this buzzing in the speakers with you aftermarket head unit?

gromit · Aug 28th, 2002, 07:05 AM

Is it overloading the front end of the AM section? I am *not* a radio engineer and have no training in this field but this is my gut feeling.

Experts?

snoopy · Aug 28th, 2002, 07:17 AM

gromit go with the gut I say.

Not good,

but not proven to be this yet.

Dom · Aug 28th, 2002, 07:24 AM

Have switched my radio - don't think I get the problem, can't say I listen to AM much! I'll test it this afternoon when I get a minute.

Dom

Dom · Aug 28th, 2002, 08:24 AM

Quote:

Originally posted by Dom
Have switched my radio - don't think I get the problem, can't say I listen to AM much! I'll test it this afternoon when I get a minute.

Dom

Nope, no problems here - looks like a head unit problem more than an antenna one then...

Dom

gromit · Aug 28th, 2002, 05:48 PM

Quote:

Originally posted by kshapiro
When I use my AM radio, it sounds like I have blown speakers. You know, rattling cones, buzzes, etc. It's not any one speaker as I've done the right, left thing and it's coming from both, and therefore sounding like it's in the dash center. When using FM and CD thee's no problem whatsoever, not even at heavy volume. If I remove the antennae while using AM, the reception worsens (of course), but the buzzing and rattling go away.

????????????????????????

Ken-

Just did same test (removal of antenna) and got same result. Antenna has too much gain for front end of AM section of receiver. Now need a radio guru to tell me if a small resistor would help.

gromit

Aug 27th, 2002, 07:41 PM	#1
kshapiro MINI2 Master Join Date: Feb 2001 Location: Baltimore, MD USA Local Time: 05:14 AM Posts: 938 Offline	Radio Reception Gurus...What's This Mean ? When I use my AM radio, it sounds like I have blown speakers. You know, rattling cones, buzzes, etc. It's not any one speaker as I've done the right, left thing and it's coming from both, and therefore sounding like it's in the dash center. When using FM and CD thee's no problem whatsoever, not even at heavy volume. If I remove the antennae while using AM, the reception worsens (of course), but the buzzing and rattling go away. ???????????????????????? Ken Shapiro Electric Blue w/ Sport Package...first "S" delivered in Maryland (5/10/02) I've been everywhere but the electric chair...I've seen everything but the wind.

Aug 28th, 2002, 07:05 AM	#4 (permalink)
gromit Bad Dog, Moderator Join Date: Dec 2001 Location: Rochester, NY USA Local Time: 11:14 PM Posts: 838 Offline	Is this an amplified antenna? Is it overloading the front end of the AM section? I am not a radio engineer and have no training in this field but this is my gut feeling. Experts? Chili Red / Black Roof Cooper "S", delivered Aug 5, 2002. If you have read this far you are obsessed - Make a donation to MINI2 and become a sponsor! Enjoy every sandwich. - Warren Zevon

Aug 28th, 2002, 05:48 PM	#8 (permalink)
gromit Bad Dog, Moderator Join Date: Dec 2001 Location: Rochester, NY USA Local Time: 11:14 PM Posts: 838 Offline	Re: Radio Reception Gurus...What's This Mean ? Quote: Originally posted by kshapiro When I use my AM radio, it sounds like I have blown speakers. You know, rattling cones, buzzes, etc. It's not any one speaker as I've done the right, left thing and it's coming from both, and therefore sounding like it's in the dash center. When using FM and CD thee's no problem whatsoever, not even at heavy volume. If I remove the antennae while using AM, the reception worsens (of course), but the buzzing and rattling go away. ???????????????????????? Ken- Just did same test (removal of antenna) and got same result. Antenna has too much gain for front end of AM section of receiver. Now need a radio guru to tell me if a small resistor would help. gromit Chili Red / Black Roof Cooper "S", delivered Aug 5, 2002. If you have read this far you are obsessed - Make a donation to MINI2 and become a sponsor! Enjoy every sandwich. - Warren Zevon

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Aug 28th, 2002, 05:36 AM	#2 (permalink)
Dom Test thread infiltrator Join Date: Oct 2001 Location: Swindon Local Time: 06:14 AM Posts: 8,543 Offline	Do a search in the faults and fixes problem, I think it's been mentioned quite a bit before. Dom

Aug 28th, 2002, 07:01 AM	#3 (permalink)
snoopy MINI2 Master Join Date: Sep 2001 Location: au Local Time: 03:14 PM Posts: 1,166 Offline	Hi I am putting this question here, as the other thread in Faults and fixes might not get enough responses. Now any of you guys that have changed for head unit how is your AM reception. Do you suffer from this buzzing in the speakers with you aftermarket head unit?

Aug 28th, 2002, 07:17 AM	#5 (permalink)
snoopy MINI2 Master Join Date: Sep 2001 Location: au Local Time: 03:14 PM Posts: 1,166 Offline	gromit go with the gut I say. Not good, but not proven to be this yet.

Aug 28th, 2002, 07:24 AM	#6 (permalink)
Dom Test thread infiltrator Join Date: Oct 2001 Location: Swindon Local Time: 06:14 AM Posts: 8,543 Offline	Have switched my radio - don't think I get the problem, can't say I listen to AM much! I'll test it this afternoon when I get a minute. Dom

Aug 28th, 2002, 08:24 AM	#7 (permalink)
Dom Test thread infiltrator Join Date: Oct 2001 Location: Swindon Local Time: 06:14 AM Posts: 8,543 Offline	Quote: Originally posted by Dom Have switched my radio - don't think I get the problem, can't say I listen to AM much! I'll test it this afternoon when I get a minute. Dom Nope, no problems here - looks like a head unit problem more than an antenna one then... Dom

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