rfg@hound.UUCP (R.GRANTGES) (06/14/84)
[] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] Leave us not confus <all> of the reading world. <Many> amplifiers, at least in the good old days, wers quite capable of reproducing some mighty purty square waves. For example my old (tube) Citation IV's would give you a near perfect square wave output at 100 (!), 1000, and even 5000 hz rep rates. The picture (no load) at 10 hz was very little droopy. The right speakers will give you a pretty nearly square wave if the freq. is high enuf but not too high. Again, the rule of thumb says if the wave looks square then your response is substantially flat with linear phase over the range .1f to 10f, where f is the rep frequency. If (when) the waveshape is "ugly", then something is wrong within that range or (esp. in the case of phase) just outside it. hound!rfg
rfg@hound.UUCP (R.GRANTGES) (06/18/84)
[] Yes, Harmon Kardon did make a big deal of their square wave response, but would you believe the early sixties? Also a lot of others. Whenever a speaker mfr can come up with one you will be sure he lets you know it. Off hand I believe the following spkr mfrs have pointed out their sqwv response: Acoustat and well , ..practically any electrostatic mfr and those who like to point out their time or phase alignment. Most of then can probably coax out a respectable square wave if the frequency, mike position and room acoustics (dead) are suitably manipulated. hound!rfg
kds@intelca.UUCP (Ken Shoemaker) (06/22/84)
Harmon Kardon used to make a big deal about their square wave response,
too...in the early 70s
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Ken Shoemaker, Intel, Santa Clara, Ca.
{pur-ee,hplabs,amd,scgvaxd,dual,idi,omsvax}!intelca!kds