POOR AM RECEPTION NOW STATUS QUE IN AFTERMARKET HEAD UNITS

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William Crane

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    • http://cranehometheater.com/
I am dismayed to learn that it is now the industry standard to have very poor AM tuners in aftermarket car radios. This was confirmed by car installation managers who certainly wanted to sell me a new unit, and Alpine’s technical service. I have gone through several Nakamichi and Sony ES head units since the mid-80s from, all of which had, among other great qualities, very good AM tuners.
Perhaps this doesn’t seem important to those listening only to CD or FM or digital satellite radio, but why should one replace their so-so factory radio with one that now get loads of engine noise, engine whine and turn signal clicks heard loudly over barely audible stations, even the higher wattage ones? In LA listening to traffic reports is critical to most drivers. Also, talk radio (don’t let Rupert the Great know about this trend) is mainly on AM and is a multi-million dollar business that won’t fade fast. Nor will the all-news stations, Lakers and Dodger games or what ever your local favorite teams are.
The current crop of “CD receivers” is far worse that tube radio in my parents ‘60 Chevy back in the day.
Just how many pennies are these fools saving?
 :(

infiniti driver

  • Jr. Member
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POOR AM RECEPTION NOW STATUS QUE IN AFTERMARKET HEAD UNITS
« Reply #1 on: 10 Jan 2004, 04:40 pm »
Absolutly correct Sir!

I think (based on knowing how manufacturers do things at times) that their is a very cheap universal chip type tuning system in play here on the order of about 10 cents value that many manufactures are probablly incorporating these days. What I did to solve this annoyance was to purchase (after many tests) a SHARP brand walkman type AM/FM hand unit that has really good AM and jack it into the preamp section before my crossover (added an extra input via Y-adapters) and use Ni-metal-hi batteries that can be recharged. I get about a week out of the 2 AA cells. I also had to build a rather good cable (shielded) to go from the unit to the 1/8 jack to cut noise a notch more. This has proven a good situation for me.

With this knowledge, I wonder what head units actually have good rejection circuitry and great gathering power for amplitude modulation?

Factory Delco seems to be unbeatable in this regard with less than stellar "everything else".