RE: [Chrysler300] 57-59 300 radio speaker
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RE: [Chrysler300] 57-59 300 radio speaker

Hi Ray..just FYI, 6 watts will deafen you, and your tech or manager is totally wrong about magnets..the more powerful the magnet, the better the coil will move for any given power applied to it (makes sense right?) This is measured by SPL (sound power level) efficiency of speakers. Not by opinions. Power ratings on speakers have more to do with how far the coil can move freely to generate the high acoustic power of powerful bass from the electrical power sent in ..old speakers of the 50’s will crash at the ends after small motions, and you hear that brutal noise  if you turn it up , plus designed for 6 watts, so ten will make them crash. There is also a thermal ability involved at high power, so the coils are now wound on hi temp , mechanically very stable materials like kapton. Old speakers are wound on cardboard or paper. And often scrape in their slot. = Scratchy sound (yeah,  but “period correct”) 


Newer and better sure does mean a lot better on speakers..! 


try a  50’s car radio sound against one in even today’s  cheapest Toyota. No comparison. And 90% of that is speaker, as radios were pretty good  electrically in the 50’s, on AM at least.  Normal listening levels on radio are well under 1 watt , no matter the “rating” , -----vacuum tube portable radios , common in the 50’s put out 1/3 of a watt at full volume..Just sayin. And run at much less than full on. 


Have to put on EE hat , re facts of situation; not taking issue with anybody—go your own way on this .


From: Ray Melton [mailto:rfmelton@xxxxxxx] 
Sent: Wednesday, June 07, 2017 1:17 PM
To: John Grady; mjraguse@xxxxxxx; Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] 57-59 300 radio speaker


When I encountered a rotted-out 4-ohm speaker in the dash of my 300C convertible, I initially went to the stereo store and said I wanted a new speaker, perhaps even better than original.  The manager looked at the wiring diagram for the original Electro-Touch radio and found that it only put out 6 watts maximum power!  He pointed out that the heavier magnets in the modern (usually 8-ohm) speakers were designed to work with outputs of typically over 20 watts per channel from modern radio amplifiers and would hardly  be moved at all by the measly 6-watt output from the nearly 60-year-old radio, resulting in a barely audible output.

I spoke to Jeff Carter of JC Auto Restorations who was restoring the radio and Hi-Way Hi-Fi record player at the time, and he offered to have the old frayed paper speaker cone itself rebuilt using modern  plastic material that would actually produce superior sound across the usual audio spectrum than the original, especially higher frequencies.  I don't recall the exact cost, but it was around the same price I was going to pay for a pair of new modern speakers, probably about $75.  Talk to Jeff for exact pricing.  Bottom line is the old components now work together just like new, and certainly sound "period-correct".  No messing with mis-matched bolt holes, either.  Another takeaway:  Newer and "more powerful" does not always mean "better", when working with older-generation components! 

Ray Melton  Las Cruces, NM  1957 Chrysler 300C convertible  white/Gauguin  S/N 3N572517



On 6/7/2017 10:32 AM, 'John Grady' jkg@xxxxxxxxxxxxxxxxx [Chrysler300] wrote:


The ohms are not as critical as often made out to be, 4 or 8 will work ok. The 4 will play slightly louder at max volume , the 8 will sound less distorted but slightly less max volume. The main thing is getting a high quality hi watt speaker that will not warp ; Japanese speakers very good, like Panasonic or Sony, Kenwood, from that auto radio place on line . Usually have to buy two…Boxed that way. 


I usually buy the mid price one do not need the fancy stuff , tweeters etc on AM ; if a rear speaker, both F and B should be same ohms . If a single speaker now, it will have a jumper in a 4 pin socket or in the plug , varies, (for rear speaker) leave all that alone as it is 


Hope that helps….sometimes have to mess with bolt holes. 






From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of mjraguse@xxxxxxx [Chrysler300]
Sent: Wednesday, June 07, 2017 9:43 AM
To: Chrysler300@xxxxxxxxxxxxxxx
Subject: [Chrysler300] 57-59 300 radio speaker


I need a correct ohm 5x7 radio speaker for my 58 D  front I/panel.  Any advice on this?
Thanks    Marv


[Non-text portions of this message have been removed]

Posted by: "John Grady" <jkg@xxxxxxxxxxxxxxxxx>

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