Dynatron RG 13 Ether Pathfinder

[Paul_RK]

Originally Posted by Edward Huggins

...but what make is that 12" Driver?

Hello Edward,

Another Goodmans. I wouldn't have recognised it either from the frame.

Paul

[Hartley118]

Originally Posted by Edward Huggins

That's a nice array. The tweeter and mid-range look like Goodmans units, but what make is that 12" Driver?

The frame looks like that of the Jensen 12" speaker fitted to some 1950s Bell & Howell 16mm projectors, but the magnet is undoubtedly labelled Goodmans. Could it be a replacement unit?

Martin

[John Caswell]

Every one of the Dynatrons I have come across of that era fitted with the T10A tuner plus the stereo preamp and twin amplifiers (possibly LF10/15) were fitted with Garrard RC88 decks and a stereo PU cartridge but cannot remember the cartridge type sorry!

John

[dalgwcobl]

I suggest that the stereo RG13, with a second speaker enclosure I've never seen before, may well be extremely rare. In those days, the top of the range models were pretty much made to order - and delivered direct from the factory - so the build was often bespoke. I agree that the changer was probably an RC88 but I can't remember what the stereo pickup was. It most probably was supplied with two plug-in heads; a mono LP/78 and stereo LP only. Of course, only the record reproduction was stereo.

[Synchrodyne]

This Dynatron advertisement from Wireless World 1959 March provides a view of the chassis units that were available at the time, although not of the finished radiogram assemblies.


WW 195903 p.18,19 Dynatron.pdf


In that advertisement, the “Ether Pathfinder” name was applied only to the T10A AM-FM tuner. On the other hand, in the 1955 Radio Show Catalogue, the “Ether Pathfinder” name was applied to the suite of the then-new 10-suffix components.


Radio Show 1955 p.94,95 Dynatron.pdf


As best I can determine, the T10A replaced the T10 for the 1958 model year. The main difference seems to have been that whereas the T10 used a “setmaker” type single-valve (ECC85) FM front end, the T10A had a two-valve FM front end (from the photographic evidence still a “bolt-on” unit) more aligned with typical hi-fi tuner practice. (The T11 was a tuner-control unit derivative of the T10A which evidently lost an IF stage, perhaps to leave enough room on the chassis for the AF valves.) Whilst the T10/T10A was not quite as elaborate on the AM side as Dynatron’s preceding AM-only tuner-control unit combinations, the T139 and T99, nevertheless with an RF and two IF stages and 4-position variable selectivity, it was certainly much better-specified than the majority.

The “small” amplifier, LF10/15/16 might have been derived from the Osram 912. The “big” amplifier, LF20, was basically a Mullard 5-20.


Cheers,

[Ben9801]

Thanks all, I think a Garrard RC88 4 would be ideal. Has anyone got one they may sell? Preferably with a stereo cartridge but that's not greatly important? Thank you.

[Ted Kendall]

Originally Posted by John Caswell

Every one of the Dynatrons I have come across of that era fitted with the T10A tuner plus the stereo preamp and twin amplifiers (possibly LF10/15) were fitted with Garrard RC88 decks and a stereo PU cartridge but cannot remember the cartridge type sorry!

In 1958 there wasn't much choice - Acos GP73, perhaps, or a Binofluid.

[Audio1950]

Originally Posted by Ted Kendall

[In 1958 there wasn't much choice - Acos GP73, perhaps, or a Binofluid.

A little too early for a Ronette BF40 Binofluid I think, but possibly there would have been two headshells, one with a Garrard GC2 for mono, and the other with a Garrard GCS10 or Acos GP73for stereo.

[wannchev]

My '57 Ether pathfinder has the Garrard RC88 turntable. The cartridge is a flip over Goldring 600.