concept full range rear loaded horn
This is a maybe flawed design of a line array of rear loaded horn speakers. not only is it large ( the length of the horn must be 1/4 of the wavelength of the frequency you wish to emphasize ) …
Category: diy audio
hand made quad 405 amps
Quad not only made electrostatic speakers in the 70’s. They made a 100 watt class A amp specifically to drive them. Naturally it would be a crime to drive them with anything but this amp. thankfully the design has been …
electric upright bass
I ordered a carved neck on ebay and set about making the body, so far so good. remaining tweaks: add electrics, (simple little piezo pickups under the bridge) the bridge needs to be raised a little. and obviously a whole …
ongoing Quad electrostatic speaker repair
A good friend of mine Don kindly donated me these old beauties. Quad ESL-63 electrostatic speakers. Ive heard his and they sound incredible. Getting them serviced is a bit of an ordeal though. each speaker contains 4 electrostatic panels, each …