[underdawg]

my question is when using the switch on the back for biamp / fullrange mode.I used a fluke 75 meter for my measurements.
the switch is labeled up biamp down full range.
switch up the negatives and the positives are open switch down they are connected.negative to negative , positive to positive.
 switch up amp connected to top terminals,no speaker output if connection to top terminals labeled bass,switch down have music.
if switch down neg to neg is connected , positive to pos connected.
amp hooked to bottom terminals have speaker output flip switch up still have full range sound.
it appears to me that the switch is just an on/off function.
does anyone have wiring diagrams for this vintage speaker so I can check all the wiring?
other that biamp function the speaker sounds great and works flawless and I have replaced the drivers.
can someone help please?
if someone has diagrams you can email them to me at dericmc@live.com
thank you in advance

[Brian Cheney]

The toggle may have been bypassed for single amp only operation.

To check, see if there are jumpers between toggle lugs 1 and 2 (top and middle) and 4 and 5 (ditto).  Cut if present and then you can biamp.

[underdawg]

Thank you Brian
I will take apart and look tonight and post my findings.

[underdawg]

Ok Brian
I did find a wire soldered from top of switch to middle position of switch.
I am now able to biamp,thank you, however the full range position on switch does not work-when select that position no sound,I either have to biamp or biwire or run jumpers on back.