As I may have mentioned somewhere posting here that I've had my New Large Advents since 1980 that I purchased when I got a new stereo after several years without. What influenced me was a trip to the stereo store in 1974 with a friend when he bought a new stereo and got original Large Advents, an amazing 30 wpc Sony receiver and an AR XA turntable. With his setup I never really noticed the midrange problem perhaps because he had them almost flush against the wall so there were less baffle issues. Of course all I had it to compare to were my own BIC Venturi Formula 4 speakers driven by a 28 wpc Sansui reciever and sourced from an old Fairchild turntable with Thorens arm, a friend's Bose 901s powered by Phase Linear 400 and another's Altec Lansing Voice of the Theaters powered by Dynaco tube stuff. Then I worked with a guy who introduced me to stacked double original Advents driven by a Phase Linear 700. I thought then that that had to be about the ultimate. In 1980 I bought New Large Advents with some new Harman Kardon gear and they have stuck with me all this time. It was just within the last couple of years that I decided to put together a kickass vintage stereo around stacked double Advents. I ended up refoaming my Advents and getting four more pairs, one pair of U4s to match mine, two pairs of U3s that needed some work, and a pair of beautiful mint A4s. I had never really identified the midrange issue until I decided to put Advents out into the room. Over all this time I've always considered the Advent a pretty flat speaker and have treated it that way by setting the tweeter switch on Normal rather than Extended or Decrease. As I listen to more varied sources on my system with the BSC in place I am amazed that it could make such a difference. Whew! Sorry about the longwindedness.Pete, I will gladly accept your spare components and will wait to build my circuit until they arrive. I found a deal on some very nice gold plated RCA jacks at the local Mom and Pop electronics store and have had the box for several weeks. The place is pretty funny, looks like he has stuff in there about as old as he is. Thanks again Pete. Is this right?