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Kanders1
30-06-2016, 09:36
Hi,
Does anyone have any info on the crossover that's in the Tannoy Oxford's?

I have only found one post that gives the value of the capacitor. (2.2uf)

Can anyone confirm this value...? or a circuit diagram..?

There is no value shown on the caps (see image) as the speakers are working I don't really want to disturb them until I can get replacement capacitors,

The speakers sound good, but being made in 84' I am thinking they may need changing..? Any other comments/ suggestions...

Thanks
Karl

walpurgis
30-06-2016, 09:54
I've only found this. Which may be what you've already seen.

http://speakerholic.blogspot.co.uk/2015/05/tannoy-oxford-gold.html

Kanders1
30-06-2016, 10:15
Yep that's the one I found too... thanks

walpurgis
30-06-2016, 10:18
If the speakers are working fine, I'd just check the cap values and maybe replace them if dubious. Otherwise, maybe some better internal wire and a clean of the tweeter level control.

Kanders1
30-06-2016, 10:34
yep.. if I can confirm what the value should be then I can check and or replace. As we said yesterday about the tweeter that had stopped working, I don't want to risk blowing the new one for a few quids worth of Caps.. :)
There is no tweeter HF level control on the Oxfords.

YNWaN
30-06-2016, 10:56
There's a good chance the value is written on the other side of the capacitor - worth prying it free and checking. If not then Paul at Reference Fidelity Components may know - he's done a lot revamping Tannoy crossovers.

Kanders1
30-06-2016, 11:33
There's a good chance the value is written on the other side of the capacitor - worth prying it free and checking. If not then Paul at Reference Fidelity Components may know - he's done a lot revamping Tannoy crossovers.

Thanks for the info.. I have sent them an email...

Reffc
30-06-2016, 12:18
The cap I think is a 2u2 MKP or MKT and no real benefit can be had from replacing it as it is not of a design that will drift with age. You may get a slight improvement by orienting one of the coils by 90 degrees (ie cable tie it vertically mounted) as their current orientation allows cross-coupling. You mention that they sound good. I'd suggest leaving the caps well alone in that case.

Kanders1
30-06-2016, 12:42
Thanks again...Paul

walpurgis
30-06-2016, 14:44
There is no tweeter HF level control on the Oxfords.

It's a good few years ago, but I swear there was on mine.

http://i67.tinypic.com/2nrkgft.jpg

spendorman
30-06-2016, 18:57
Still have my Oxfords, but can't get at them at the moment, but I don't remember any tweeter level control.

Kanders1
30-06-2016, 21:13
I see... I have an earlier model of the oxfords... My speakers only say Oxford. The T125 Oxford is a different year. The port is in the centre of the T125s mine is on the right hand side. That may explain the tweeter control.