EV built some massive speakers back in the glory days of HiFi. The Patrician 800 had a reported range of 15-23000. That is a rare feat even today. Not sure what the - or + db was on that but wow. This also used that giant 30 inch woofer. Would love to hear a pair of these. I would be interested to hear how they sound with all those crossover points.
Here is some technical data.
Over 42 inches high.
Here are some great details on the 800 from http://www.novacon.com.br/audiopat8001.htm.
Have to hear these some day.
12AT7 - こんにちは 届きました♪ かなり古い真空管ですが 測定値もノイズも いい感じです ありがとうございました♪
56 minutes ago