[Boatanchors] Magnavox speaker info needed

[Richard Knoppow]

----- Original Message ----- 
From: "Bill Cromwell" <wrcromwell at gmail.com>
To: <boatanchors at mailman.qth.net>
Sent: Friday, January 25, 2013 11:15 AM
Subject: [Boatanchors] Magnavox speaker info needed


> Hi,
>
> I have a pair of Magnavox speakers that I have salvaged 
> from an old
> AM-FM-Phonograph console. The speakers are labeled with 
> several numbers
> each
>
> 1D3247
> P-232
> 903
> 583247
>
> and
>
> 1D3248
> P232
> 902
> 583248
>
> One speaker has a what looks like a matching transformer 
> mounted on it.
> The speakers have field coils in them (I found that much 
> info on the
> internet). They are wired together and I have not 
> disturbed the wiring
> harness which terminates in a seven pin plug. Does anybody 
> have the info
> or a pointer to the info about how these are to be 
> connected, field coil
> voltages and currents expected, etc. I might simply reuse 
> them with the
> amplifier after I remove and reassemble it on a smaller 
> chassis but that
> information will be valuable in making sure I have the 
> wiring right. I
> am not interested in reusing the whole radio - especially 
> not in the
> original, large, floor console.
>
> 73,
>
> Bill  KU8H

     Jensen used field coil magnets well after most others 
switched to permanent magnets, they were still using them up 
to maybe the mid 1950s.  Also, they liked 500 ohm voice 
coils, hence the matching transformer. I think P 232 is 
probably the cone number I don't know what the other numbers 
are. Jensen made some very high quality speakers including a 
line of co-axial speakers. Jensen also held the patent on 
the "bass reflex" type enclosure and used it for many of 
their models. If the original cabinet used them the speakers 
will sound best if you duplicate it for volume and tuning.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com