One amp per driver gives you control over q and damping factor , no reactive components in the way like coils , less ringing and the driver is controlled out of band to . Nice impulse response is possible say god buy to boomy bass hello tight bass and you get amplifier damping in higher midrange and treble to if needed , in the passive speaker there is typically a bunch of passive components . Basically amp should be directly coupled to driver :)
Two other novel approaches are also possible . Very high output impedance in the amp close to infinite ,gives you a true current output . Drawbacks freque response has to be equalised no damping so the box has to do that . But no power compression in the drivers coil less THD and smaller box who now does more of the the damping . Tailored negative output impedance you manipulate the TS parameters of the drivers a bit . An active filter on the electronic side gives you a much easier way to do steep filter slopes without much of the penalties a passive filter gives you . A DSP based active filters makes good impulse response and steep filters a thing at the same time , that matters less than folk thinks ( first order filter myth by some audiophiles ) compared to the positives . For example the treble driver in a two way speaker with a shallow filter , it has to handle rather lot of midrange much more than it would be happy with so this limits clean distortions free output and you also have to use very expensive tweeters who can take the punishment -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad1 with iPengHD & SqueezePad (spares Touch, SB3, reciever ,controller ) server HP proliant micro server N36L with ClearOS Linux http://people.xiph.org/~xiphmont/demo/neil-young.html ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=105563 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
