I haven’t gotten them installed yet, but I got a great deal on a pristine pair of McIntosh XRT20 Isoplanar Loudspeaker System. I am the second (proud) owner.
If you’ve never heard of them (I hadn’t), they are reported to be an awesome speaker. As far as their condition goes, the finish was nearly flawless when I picked the up. One cabinet received minor damage on the three hour + trip home. I’ve replaced the original, tiny and rather weak, spring clip terminals with some equally cheap 5-Way binding posts that accept up to 10 AWG wire (not much room to work with). I have also replaced the three non-polarized electrolytic caps on each of the crossover boards. I’m not sure yet exactly where the crossover points are, but I know there are three of them. One for the second 12” woofer, one for the mid-range driver, and one for the tweeters. They are equipped with warning lights and fuses. The twin tweeter towers (say that three times fast) are supposed to promote an awesomely wide sweet spot, and I don’t think I have to say much about the dual woofer setup. These were top-of-the-line in 1978 when they came out, and were still pretty hot stuff when the original owner bought them in 1992. I can’t wait to finish testing them, mount the tweeters on the wall and fire them up. Folks report that they sound ‘big’ before they sound ‘loud.’
From the specifications in the Owner’s Manual:
Speaker
Woofers, two: 12" (30.5 cm) diameter;
Mid-range, one: 8" (20.3 cm) diameter;
Tweeters, twenty-four: 1" (2.54 cm) diameter
Cabinet Size
Bass Section: 39-9/16" (100.5 cm) high, 25-7/8" (65.7 cm) wide, and 12-7/8" (32.7 cm) deep.
High Frequency Section: 77-1/8" (195.9 cm) high, 10-3/4" (27.3 cm) wide, and 11-3/16" (4.6 cm) deep.
Construction
The cabinet is constructed of 45 pound density particle board with hardwood bracing. The exterior is genuine walnet veneer with laquer finish.
The high frequency column is constructed of aluminum extrusions finished with genuine walnut veneer and solid wood end caps.
System Weight
170 lbs (77.1 kg)
Shipping Weight
192 lbs. (87.1 kg)
I believe the weights given above were for a single unit: (1) base cabinet, and (1) tweeter tower.
