IMF tls 80 problem

[09mike69]

Recently acquired a pair of tls 80 speakers, bass and mid work but tweeter and super-tweeter do not, I removed the tweeter to test and it showed 6ohm, this is the same on both speakers.
Anyone had experience with these that could offer some advice.
Cheers
Mike.

[Macca]

problem is possibly the crossover then. Has it been rebuilt before or is it original?

[09mike69]

problem is possibly the crossover then. Has it been rebuilt before or is it original?

X,overs look original, seems odd that it's not putting sound to the tweeters.

[Macca]

X,overs look original, seems odd that it's not putting sound to the tweeters.

Could be a broken trace on the board, or failed components. Mine were working but way out if tolerance so require a complete re-build, that's where you need to start.

Falcon Acoustics sell all the parts.

[walpurgis]

The HF1300 tweeters are measuring about right if I recall. The supertweeters should be HF2000 I think and those probably measure slightly less.

[Lawrence001]

I used to own a pair a few years ago. Ani right in thinking there's a knob on the back for the treble level? Might be dirty, try turning it back and forth several times (or several dozen!) and see if you get some sound out of the tweeters.

Failing that could be a broken knob, loose wire or failed component on the crossover.

[09mike69]

I used to own a pair a few years ago. Ani right in thinking there's a knob on the back for the treble level? Might be dirty, try turning it back and forth several times (or several dozen!) and see if you get some sound out of the tweeters.

Failing that could be a broken knob, loose wire or failed component on the crossover.

No knob, and x,overs look original.

[Lawrence001]

No knob, and x,overs look original.

Odd the photos on the net show a knob between the banana sockets can you post a photo of the sockets?

[09mike69]

Odd the photos on the net show a knob between the banana sockets can you post a photo of the sockets?

these have the old style twist spade connector like on some of the old celestion speakers, no tone switch, i removed the unit as id read these have a cross over behind the speaker terminal but there was no X,over either. these have been tinkered with for sure.

[09mike69]

ok so, tested the tweeters and super tweeters and they all work fine, except when i connect them to imf speaker then nothing,
there also looks like there is a resistor in the positive wire going to the tweeter,
but when all speker units are connected there is only sound from the mid and bass speakers, kind of like when the jumper bar isnt connected on bi wirable speakers.
this is the same on both speakers.
there is also a sticker on the back of the speaker that says modified and tested by south coast speakers.
anyone shed any light.
thanks
mike.