Revox Agora B Interesting find in the used market.

David_sd:

I had mine repaired/recapped they are not difficult to work on and all the parts are available or have replacements. the amps come out easily and the diagrams are readily available, i have a set for the Mk1 if you need them i can scan them.

My thinking is most don't know what they are and hesitate, but in reality they are just amps and drivers nothing out of the ordinary or unobtainium as they say. also parts are still available from Studer i'm told. I also have the complete parts list. 

I'd keep looking for reputable tech close by and take them to them and get them updated and repaired very worth while.  if your going to have one looked at may as well get them to recap both of them while they are in there. 

May i ask when you say one doesn't work what exactly is not working? could be something simple like a fuse, switch. one of the power connection on one of mine was loose and had a bad solder joint. 

Thanks Glennewdick!  The first time I plugged the speaker in and turned it on, there was a spark I could see in the thru the rear grill of the speaker cabinet.

after the spark did it still work, or did you unplug it and not try it again? reason i ask is that’s what happened to mine and it was the power socket solder joints, but that said it also could be a component like a capacitor, transistor etc. they are not hard to work on.

In my time with mine i can’t find much to complain about them. when running correctly and after a recap these speakers sound really good, if I was honest I prefer them to my McIntosh MC275Mk6 and Spendor D9.2’s ( $20,000+)combo. I find them to be musical, engaging, dynamic, excellent sound staging and some of the best bass (detailed, fast and deep) I’ve heard. If I was critical the ultimate detail level is slightly lower them the Spendor’s and they are a little light in the lower midrange area. really minor stuff considering you can buy these for a grand and for that kind of money they are steel. still cannot believe the bass these put out.

one note in my research i found that Studer/Revox used the same drivers in many other of their hi end studio monitors,  like the Studer A723 uses the same midrange driver and the sell for upwards of $8000 on the used market. the agors's seem to run under the radar. So work repairing for sure. 

40 years  later we are still arguing over active vs. passives.  😂

Erik,

I don't think this is a active vs passive thing as such. These Speakers are rather rare and special in what they Revox/Studer were trying to do back in the mid 80's. They were trying some interesting tech and configurations. not your typical mid 80's active/or not speaker that's for sure.