[AMRadio] Hallicrafters R-12 speaker

Bob Peters rwpeters at swbell.net
Fri Sep 4 21:06:58 EDT 2009

You are correct... They used Jensen and Quam but
only used 10 oz magnets...The magnet size is what
determines sound quality on a speaker... My
company manufactures both 5 and 10 oz but only up
to 8 "...Now you make that speaker a coaxial and
it will improve the quality by 50% or
more...Speakers are just like radio's... The
better the enclosure the better the speaker like a
transmitter and an antenna...

More later on enclosure design///

Bob W1PE

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf
Of rbethman
Sent: Friday, September 04, 2009 6:21 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Hallicrafters R-12 speaker

Well, a Jensen P12R isn't "much" different in

The originals I do believe were made by Jensen.

Bob - N0DGN

Bob Peters wrote:
> WOW That is way overkill for Ham Radio  ...Bob
> This one here:
> =7&Partnumber=290-834&ctab=2#Tabs
> 73
> Brian

|             AM Amateur Radio Operator    NØDGN
| Bob Bethman                \\\|///     " The
absence of a danger |
|                           \\ ~ ~ //      signal
does *NOT* mean  |
| rbethman at comcast.net      (/ @ @ /)      that
everything is OK " |

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