I installed a pair of RCA jacks across the TV speakers which are damn little and damn poor. But my ex-supervisor cautioned me that some of the "cheap" amps use quite high impedance speakers, up into the 40 ohm range, and that loading them with 4 or 8 ohm speakers could fail the amplifier
So I've been screwin' around with this, and one problem is the two jacks must be completely isolated, as there is no "common" between the two speaker circuits. (They need DC isolation from each other) This means you cannot just run them to an external amp, many of which the inputs are grounded together
So last night I ended up with an old pair of RCA cables, two old audio transformers (for isolation) and a 100 ohm resistor in series with one leg, on each output, at the TV, to unload the TV output amplifier
And............I am watchin this great old movie off the Roku box, "Point Blank", 1967, Lee Marvin, Angie Dickenson, and some others
Point Blank (1967 film) - Wikipedia
............and I plug this mess all in AND I ONLY GET SOUND out of one channel!!!
So I swap transformers at the TV output, swap the plugs at the external amp input and I STILL can only get one output
I thought "****!!" I've blown up one of the TV amp outputs!!!"
Then this morning I thought "could it be?"
!!YUP!!! The highly unskilled, overpaid audio/ visual engineer who digitized this old film, only ran the audio TO ONE CHANNEL. This morning everything works just great
The old man can hear again.
So I've been screwin' around with this, and one problem is the two jacks must be completely isolated, as there is no "common" between the two speaker circuits. (They need DC isolation from each other) This means you cannot just run them to an external amp, many of which the inputs are grounded together
So last night I ended up with an old pair of RCA cables, two old audio transformers (for isolation) and a 100 ohm resistor in series with one leg, on each output, at the TV, to unload the TV output amplifier
And............I am watchin this great old movie off the Roku box, "Point Blank", 1967, Lee Marvin, Angie Dickenson, and some others
Point Blank (1967 film) - Wikipedia
............and I plug this mess all in AND I ONLY GET SOUND out of one channel!!!
So I swap transformers at the TV output, swap the plugs at the external amp input and I STILL can only get one output
I thought "****!!" I've blown up one of the TV amp outputs!!!"
Then this morning I thought "could it be?"
!!YUP!!! The highly unskilled, overpaid audio/ visual engineer who digitized this old film, only ran the audio TO ONE CHANNEL. This morning everything works just great
The old man can hear again.
