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Murphy Radio 1938
continued. The
previous page looked at the A52 at the top of the 1938 range, but you could buy
an A46 Murphy for almost half the price. In
fact the Murphy A46 and A48 receivers were of a fairly similar circuit design,
both using five valves. The main 
difference was the method the user utilised to tune in a station.
The A46 featured a conventional scale with normal travelling cursor,
whereas the A48 used Murphy’s method of alphabetical tuning first seen in
1936. Both cabinets were designed
by R.D.Russell, though the A46 also had some input from Eden Minns, who would
later design the distinctive AD94 bakelite set.
The A46 is often said to be inspired somewhat by the “Arts and
Crafts” style, and in spite of being at the bottom of the Murphy range in 1938
is today quite sought after. The example above
is as yet unrestored, and it can be seen that the speaker cloth has a major
tear, as well as some kind of sticker to the left of the cloth. In the
chassis view of the set you can see that I am prepared for the restoration, as I
have a spare speaker board with good cloth ready. This was obtained from a
scrapped set many years ago - it is always worth storing suitable spares for
future use when the opportunity arises. Valve line-up is AC/TH1, AC/VP2, HL41DD,
AC5/PEN, UU6.
Shown left is the Murphy
A46 console. This utilises the same chassis as the A46 table receiver shown
above together with a larger  loudspeaker,
but unfortunately is not as good looking as the table model. As the chassis was
primarily for the table model, the voltage changing panel on the top of the
mains transformer is located in a position where it is difficult to see the
selectable voltages or indeed to move the screw-in voltage selector. Aerial and
earth etc sockets have been extended to a small paxolin panel at the rear of the
cabinet. Valve line-up is AC/TH1, AC/VP2, HL41DD, AC5/PEN, UU6.
 With
volume and tone, wavelength and tuning controls concentrically mounted as pairs
on the front, the A48 cabinet is maybe not as easy on the eye as the A46, a
comment that might also be applied to the next set up the 1938 range, the A50,
with its smoked mirror glass tuning surround.
Notice that the chassis to the A48 is
mounted in the top half of the cabinet, with the speaker located beneath
it. Although not too clear from the compressed photographs above, it is encouraging
that both chassis are deeply coated in dust (about 1/4 inch in both
cases). This suggests that the sets have not been "messed about
with" by inexperienced restorers. Valve
line-up is AC/TH1, AC/VP2, HL41DD, AC5/PEN, UU4.
 Shown
in these pictures is the Murphy A50. This set is not one of R.D.
Russell's most captivating designs, but at about 2 feet long at 18" high it
is massive, and looks impressive in real life. The AC4/PEN output valve is
more powerful than that fitted in the receivers shown above, and can deliver
almost 7w. The output transformer is also a noticeably "meaty"
component that delivers very good sound quality into the 10"
loudspeaker. Felt has been applied to all the edges where the back panel
meets the cabinet to reduce the chances of vibration. This receiver features the
smoked mirror tuning escutcheon first seen in the A40C, together with a mahogany
cabinet. Valve line-up is AC/VP2, AC/TH1, AC/VP2, HL41DD, ME41, AC4/PEN,
UU4.
Continue to 1938
full range details.
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