Hi guys, I picked up a pair of these Altec Lansing 1590e for FREE and thought I could make use of them (I could be wrong about that but hear me out!). The iron is VERY stout!
The manual can be found here: 1590e Manual
Looking at the "Strapping Information" table, I am fairly certain that I can omit the step-up transformer entirely and just use the 30V taps for 4.5-ohms and match it to a 4-ohm speaker without too much risk.
What has me confused is the "Strap" column. I presume this indicates internal wiring of the two sections delineated by dotted lines??
I've never worked on a 70V system before and haven't even opened them up yet. Thanks if you can help me read the schematic first and foremost!
The manual can be found here: 1590e Manual
Looking at the "Strapping Information" table, I am fairly certain that I can omit the step-up transformer entirely and just use the 30V taps for 4.5-ohms and match it to a 4-ohm speaker without too much risk.
What has me confused is the "Strap" column. I presume this indicates internal wiring of the two sections delineated by dotted lines??
I've never worked on a 70V system before and haven't even opened them up yet. Thanks if you can help me read the schematic first and foremost!
By strapping you are wiring two windings of the transformer in parallel in this case to get 4.5 ohms. It done external to the amp as far as right on the TB2 connector. Altec made a few other amplifiers with assorted strapping tables to get assorted output impedances. In this case you are adding a wire between terminal 4 and 5 and another between 6 and 7. Take output from terminals 5 and 7.
Just remember that this may not be a high fidelity amplifier in any way though.
Just remember that this may not be a high fidelity amplifier in any way though.
Thank you so much daqvin_carter!
I realize the performance may not be great but need some power to drive inefficient Magnepans. Hoping this will sound ok.
I realize the performance may not be great but need some power to drive inefficient Magnepans. Hoping this will sound ok.
