What I’ve learned with the 901’s is not to buy anything made after 1975 (Series 3 thru 6). As with any pair of 1970’s/1980’s Speakers foam rot can’t be avoided. While I can rebuild a Series 1 or 2 Equalizer (better solution is miniDSP), I don’t have the patients to refoam 18 Drivers. 1968 to 1974 Series 1 & 2 are doped cloth Surrounds and will never rot.
Very nice Monitor Audio’s you have : https://zstereo.co.uk/2013/02/03/monitor-audio-r352/
And your Pavanes are Classic 70’s in size and style : https://www.usaudiomart.com/details/649001775-richard_allen_speakers/images/448498/
http://ukhhsoc.torrens.org/makers/RichardAllan/Loudspeakers/index.html
Very cool stuff joma0711