Guest jolyon Posted October 25, 2009 Report Share Posted October 25, 2009 Hi,I am new to this forum and new to the world of Acoustic Research loudspeakers. Quite recently, I acquired a pair of AR55BX speakers in what appears to be the usual condition.[img width=800 height=711]http://i34.tinypic.com/2evg5tt.jpgThe foam surrounds had perished but all the voice coils were OK.[img width=800 height=918]http://i38.tinypic.com/vwxs1z.jpgAs with many other things I have, if I hadn't acquired them they'd have been in a Landfill so with these old things it's easy to see their descent from cherished audio statement to second-hand noisebox in the marks on the veneer and the crunched corners.The cross-overs looked nice and big to me so I assumed from that that these were once a decent piece of HiFi.[img width=800 height=905]http://i38.tinypic.com/1t9aw9.jpgI was concerned about the bubbles on one of the tracks indicating that a component behind it had got rather hot.I had never seen such a big tweeter magnet so was looking forward to hearing the speakers just for them alone !I bought some surrounds from someone in The Netherlands and fitted them. I was upset to discover that both Titanium Dome tweeters were blown so had to find alternatives. Cross-over point is 5K @12dB/Octave. I had a pair of Monacor RBT-95SQ quasi ribbons lying around so I thought I'd put them in. A mounting plate was needed as was a small cut-out in the cabinets to accommodate them.[img width=800 height=1203]http://i35.tinypic.com/25srf4o.jpgAs I said, I was worried that the cross-overs had got hot so I decided to hard wire them and mount them on the back of the cabinets. Here's one of them, nearly finished.[img width=800 height=532]http://i35.tinypic.com/2dhfjna.jpg[/imgThe board originally carrying the components is where above my home-made one. The burn mark was caused by the heat from a resistor which I assume took more current than designed for due to the failure of a capacitor. Anyway, all capacitors replaced with polyester/polyprop. or electrolytics.This was all about a month ago and I am really enjoying listening to these loudspeakers. I don't know what they would have sounded like originally, but as they are they're super. The tweeters work really well, maybe a little loud but I can live with that as I have tone controls. I could, of course, replace the series resistor with a bigger one but they sound so nice that I don't think I'll bother.So impressed was I with these that I decided to find a more "Classic" AR speaker to rebuild and I landed upon a pair of AR5s in the usual condition. I'll mention these in another topic as their rebuild is quite a challenge. But, my AR55BXs have had me trawling through my vinyl etc. just to hear all my favourites anew. What more can one say to praise a piece of HiFi ?Yours,Jolyon. Link to comment Share on other sites More sharing options...
Guest jolyon Posted October 25, 2009 Report Share Posted October 25, 2009 http://i34.tinypic.com/2evg5tt.jpg Link to comment Share on other sites More sharing options...
JKent Posted October 26, 2009 Report Share Posted October 26, 2009 those embedded links didn't work. Here they are:http://i34.tinypic.com/2evg5tt.jpghttp://i38.tinypic.com/vwxs1z.jpghttp://i38.tinypic.com/1t9aw9.jpghttp://i35.tinypic.com/25srf4o.jpghttp://i35.tinypic.com/2dhfjna.jpgNice job on the XO!! Kent Link to comment Share on other sites More sharing options...
Guest jolyon Posted October 26, 2009 Report Share Posted October 26, 2009 Thanks, Kent, for re-posting the links.Yours,Jolyonthose embedded links didn't work. Here they are:http://i34.tinypic.com/2evg5tt.jpghttp://i38.tinypic.com/vwxs1z.jpghttp://i38.tinypic.com/1t9aw9.jpghttp://i35.tinypic.com/25srf4o.jpghttp://i35.tinypic.com/2dhfjna.jpgNice job on the XO!! Kent Link to comment Share on other sites More sharing options...
Robert_S Posted October 26, 2009 Report Share Posted October 26, 2009 Hello,The reason the 'Insert Image' function failed to work, is, according to my understanding, attributable to your use of width and height tags:[img width=800 height=532]http://i35.tinypic.com/2dhfjna.jpgCounter, perhaps, to intuition: there's no need to specify dimensions as linked images are sized automatically (to a preset max), with aspect ratio preserved.For example, removing said size-tags, but retaining An alternative to linking is to 'Choose File', 'Upload', and then use the 'Manage Current Attachments' drop-down menu to insert the file as a post attachment, as shown below. (Note the default attachment display-mode appears to be thumbnail-view.)Hope that helps.Robert_S Link to comment Share on other sites More sharing options...
Guest jolyon Posted October 27, 2009 Report Share Posted October 27, 2009 Thank you, Robert, for your explanation.Yours,Jolyon Link to comment Share on other sites More sharing options...
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