[Boatanchors] SX25 Hallicrafters

[rbethman]

Joe,

Hallicrafters went through a vast gambit of different speaker impedance.

The 5K, 600, 8, and even the odd 4.x ones.

I believe that there was simply a lot that Hallicrafters did was much 
along the lines of the National folks.

The different periods were rife with making due with either surplus 
parts, and constant changing design to keep up with the availability of 
these components.

The true answer(s) are not there due to the aging of old documents, and 
the loss thereof.

We are simply placed in the position of having to deal with what we get, 
find, or happen to discover.

It is one of the Boatanchor issues that each and everyone with them 
experiences, and has to come to terms with.

Sincerely, Regards,
Robert "Bob" Bethman
N0DGN


On 3/7/2014 6:21 PM, Joe Connor wrote:
> Was the PM-23 the correct speaker for the SX-25? The PM-23 has an 
> impedance of 5K Ohms. I'm curious if there is any reason why 
> Hallicrafters chose 5K as one of the two output impedances on the 
> SX-25 and SX-28. Was it a marketing decision to help sell PM-23 
> speakers? It seems to be pretty unusual to find one of these receivers 
> with the original speaker.
>
> Joe Connor