bad fm reception with stereo unit

LarryCleve

Auditioning
Joined
Jun 27, 2006
Messages
4
Real Name
Larry Mark
I get bad fm reception on certain stations with my stereo unit. It's a lot of background noise. It occurs more on stations at the ends of the dial rather than the middle. I tried using headphones and the sound was crystal clear on all the problem stations. I assume this narrows the problem down to the speakers and or the speaker wire. The sound from the speakers is perfect coming from cable, cd, etc. Any ideas what to do to straighten this out?
 

Phil A

Senior HTF Member
Joined
Oct 1, 2000
Messages
3,224
Location
Central FL
Real Name
Phil
Sounds like RFI. Do you live in the vicinity of broadcast towers? Are the interconnects going from the source unit to the amplifier shielded?
 

LarryCleve

Auditioning
Joined
Jun 27, 2006
Messages
4
Real Name
Larry Mark
There's a college station about a mile away. The other towers are about 15 miles away. The unit is a marantz sr-685. How would I go about shielding this?
 

Phil A

Senior HTF Member
Joined
Oct 1, 2000
Messages
3,224
Location
Central FL
Real Name
Phil


If you do a Google search on 'RFI or EMI and audio equipment' or RFI or EMI shielding I'm sure you'll turn up stuff like: http://www.audiosystemsgroup.com/publish.htm

I don't know what source components you have connectd to the Marantz, but you may wish to unhook them one at a time to see if the problem still persists. If the college station goes off the air at certain hours you may wish to see if you still have the problem.

Places like Parts Express (and Radio Shack) do sell shielded cables (not sure what you are using now - such as: http://www.partsexpress.com/pe/showd...number=263-670

You may wish to look at Cardas' site about RCA caps and FAQ:
http://www.cardas.com/content.php?ar...=System+Set+Up

The above mentions someone using aluminum foil in once instance. I think it may be a trial and error type scenario where you can eliminate what is not causing a problem. It it is the college station, perhaps they have an engineer that can help.
 

LarryCleve

Auditioning
Joined
Jun 27, 2006
Messages
4
Real Name
Larry Mark
Got it working much better by replacing the speaker wire. I bought a fancy system and then went cheap on the stereo wire. I was using 18 gage with just the bare metal wire as the connections. I bought 12 gage, oxygen free, shielded, twisted wire with pin connectors. The difference in the sound is remarkable especially in the base. I've had this system for 10 years and was listening to only 50% of its potential. Thanks for your help.
 

Forum Sponsors

Latest posts

Forum statistics

Threads
344,920
Messages
4,724,762
Members
141,358
Latest member
beekeeper