AR 2ax cross over match

[Ibis]

Hi,

I am refurbishing a pair of 2ax and have noticed that one of the cross overs use the old block capacitors and one uses the newer cylindricl types.

Also on the back of the tweeter on the first speaker there are resistors and a further capacitor.

I would like to re cap the pair and I wondered if I just go ahead and buy a pair of 6 and 4 UF caps and proceed or if the values on the first tweeter need to be matched on the second tweeter.

I hope the photo will explain more clearly !

Any advice would be most welcome

Thanks

Iab

[Carlspeak]

First, the stuffing in your pictures looks like that used in European AR speakers. Do you know if these originated in Europe? Ser. numbers might help.

I does appear these have been worked on and are not totally original. If the tweeters are originals, then you should do as you suggest and go with the st'd 4 and 6 uF caps.

A more close up picture of the front and back of the tweeters (slightly larger format as well) will help.

[Ibis]

Hi Carlspeak

Thanks for the reply, Yes I imagine they are European as I live in the UK, I picked them up off ebay here along with the Amp for £37.00 seemed to good to miss.

I cant find any serial numbers, I have taken some better shots which may help, I think although a pair they may be from different era ?

Thanks

Ian

[RoyC]

Hi Carlspeak

Thanks for the reply, Yes I imagine they are European as I live in the UK, I picked them up off ebay here along with the Amp for £37.00 seemed to good to miss.

I cant find any serial numbers, I have taken some better shots which may help, I think although a pair they may be from different era ?

Thanks

Ian

Ian,

The 2ax tweeter's impedance was increased in later models, presumably to compensate for a change from the old alnico magnet woofer to the ceramic magnet version. Some older tweeters will be found with a 3 ohm resistor wired in series on the back. I have not seen 2 resistors and a cap before, however...may be different in Europe. Do both woofers appear the same? You should measure the resistance of each driver before making any decisions.

Roy