09-23-2020, 05:24 PM
nice try falcon123, but i don't think an 84 is worth the cost of a full restoration, including a recone of the speaker and a new dial face at the least for this one. that said, the cabinet is in exceptionally good condition. no damage whatsoever [in case someone is interested].
but now i'm interested in knowing just how critical the speaker impedance is. would i even notice a difference in sound quality with a modern 4 ohm speaker? at my age, that is
. and if it is an issue, could i fake it by just putting a resistor in parallel with the speaker?
then, speaking of the impedance, is a simple resistance reading anywhere close? and if not, at what frequency should i calculate the impedance? from the inductance, which i find by setting up a tank circuit. i "ping" the circuit thru a diode at a low frequency, read off the resonant frequency on an oscilloscope and compute the inductance.
but now i'm interested in knowing just how critical the speaker impedance is. would i even notice a difference in sound quality with a modern 4 ohm speaker? at my age, that is
. and if it is an issue, could i fake it by just putting a resistor in parallel with the speaker?then, speaking of the impedance, is a simple resistance reading anywhere close? and if not, at what frequency should i calculate the impedance? from the inductance, which i find by setting up a tank circuit. i "ping" the circuit thru a diode at a low frequency, read off the resonant frequency on an oscilloscope and compute the inductance.
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