That's about right.
Transient voltage will be much higher for about 10mSec before the bulb glows.
"The longest I power tested the 0.13µF bender elements (4Khz variety) was with 240V P-P on pink noise for about 24 hours straight. Output was unchanged."
Ten in a vertical line are about 110dB/2.83V, so 18V RMS will be about 126dB long term, with peaks as much as 6dB higher.
A single Klipsch K77 (EV T35) is about 104dB/2.83V, and the version with the green glue and BeCu leadout-wire will handle 5W long term (111dB).
Transient voltage will be much higher for about 10mSec before the bulb glows.
"The longest I power tested the 0.13µF bender elements (4Khz variety) was with 240V P-P on pink noise for about 24 hours straight. Output was unchanged."
Ten in a vertical line are about 110dB/2.83V, so 18V RMS will be about 126dB long term, with peaks as much as 6dB higher.
A single Klipsch K77 (EV T35) is about 104dB/2.83V, and the version with the green glue and BeCu leadout-wire will handle 5W long term (111dB).