[Hallicrafters] R-42 Reproducer questions

[Rbethman]

Craig,

    The voice coil appears to be a 3.2 ohm one.  Inside the enclosure is 
a 600 ohm to 3.2 ohm transformer, and a capacitor that is switched from 
communications to Hi-Fi.

    I don't believe you could call the cabinet "sealed", but the back is 
screwed on.  There is a "bass reflex" port on the bottom front, since 
there is inadequate room in the cabinet to allow for the complete 
displacement of air from the cone movement.  The interior is lined with 
"tarred felt".

    I happen to have two of them.  One is completely original, the 
second one has been repainted wholly improperly, to include covering the 
markings on the front face.

Bob - N0DGN

Craig Roberts wrote:

> I've just purchased an SX-42 and need a speaker to mate with it. I'm 
> guessing an R-42 will be hard to locate ( though if anyone's got one 
> for sale, please let me know!), so I'm planning to adopt a 
> substitute.  This leads me to a couple of questions:
>
> Does the R-42 speaker have a 500 ohm voice coil or is a transformer 
> housed inside the cabinet?
>
> Is the R-42 cabinet sealed? If it's sealed, does it have a bass port?
>
> I owned an R-42 once, but it was about 40 years ago and I don't think 
> I ever peeked inside.  I remember the cabinet being rather larger than 
> the 8-inch driver inside would indicate (is it really an 8-incher?) 
> and wonder why, if not for acoustic purposes. I also remember the 
> "Communications / Hi-Fidelity" toggle switch.  I'm guessing this 
> switched in a cap network to restrict the frequency response for voice 
> reception.  So, I guess my basic question about the R-42 is-- what's 
> in there?
>
> Thanks very much and 73,
>
> Craig
> W3CRR
> www.aerialacts.com

                       Bob Bethman - N0DGN
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