[R-390] Never heard the real R-390

[Tom Norris]

And the Hammond transformer has better freq response than
the one out of the LS-166

The Other Tom NU4G

>You can also purchase a new Hammond matching transformer from AES in 
>Tempe, Az.
>for $18.95 USD, that is made for this application.
>
>Tom WC9M
>Moline, IL.
>
>
>>  Chuck, just in case you don't know, the speaker output is 600 ohms
>>  impedance. You can use a cheap radio shack 12 volt filament transformer
>>  (smallest one) to match the common 8 ohm speaker. Even then, stock audio
>>  isn't impressive. Steve KJ8L
>
>A good source for 600 Ohm to 8 Ohm matching transformers is the LS-166/U
>loudspeaker used with various vehicle and manpack sets. The transformer is
>rated at 2 Watts and has a stated frequency range of 250 c/s to 5000 c/s.
>Either use as-is or connect to a better 'speaker for improved "Fi".
>They are not too hard to find even in the UK or Europe so I imagine even
>easier in the US.
>
>Andy G8JAC