Altec Crossovers

[Jim4248]

I just purchased 2 altec model 1234 speakers. Someone has really butchered the crossovers and I need to know how they were originally configured. Both have had one or more caps removed and they have had a wire around mod. I have checked everywhere for a schematic to help me, to no avail. Also, when were these units manufactured?

Jim

[Earl K]

Hi Jim

The Lansing Library has some information on your 1234 model.
Click here to go to the 1978 Altec catalogue overview.
Your model is shown and explained on pages FOUR and FIVE .

I can't really help you on your crossover questions except to say that typically the Altec commercial designs were usually quite simplistic. Meaning; because the catalogue info does state that your model uses a 12 db per octave, ( 2 -pole LC type ) , with a 1200 hz crossover point - reworking what you presently have back to the original configuration should be quite easy to accomplish.

- Take note of all the crossovers' exisitng component, with any stated values and post that info here .
- Pictures of the crossover that show any capacitor values ( usually stated in mfd or uf ) would be useful .

<> Earl K

[CONVERGENCE]

Hi

You can try the following site http://alteclansingunofficial.nlenet.net/Repairs.html