-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Mon, May 21, 2007 at 07:45:29PM +0100, Folderol wrote: > On Mon, 21 May 2007 11:10:46 -0700 > Ken Restivo <ken@xxxxxxxxxxx> wrote: > > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > The M-Audio Audiophile interface produced just as much noise as the Edirol FA-66 did. However, the amp I borrowed was buzzing even with only a regular (Korg) keyboard plugged in, so the problem may have to do with the amp. > > > > I also noticed that this laptop's analog video output produces some nasty warbling/ghosting on my external monitor. Looks like rain falling or fog travelling rapidly, especially with dark screen backgrounds. Dunno if that's an improper X setting, a problem with the monitor, or or maybe this laptop is just generating way too much EMI with the Core 2 Duo's 2.33Ghz clock? I hope that's not the problem-- that is one of the few things I cannot change. > > > > I've going to buy a keyboard amp, to isolate that variable at least. Off-topic, perhaps, but any recommendations? Most keyboard players I've seen recently seem to have Roland wedge-style keyboard amps. My local store carries the Peavey's (KB4, etc). > > > > Thanks Pieter and others for links about noise mitigation. I'll try those suggestions too once I get the amp situation squared away. > > > > - -ken > > Have you thought of plugging in nothing except a battery operated > headphone amplifier? With no external earth loops and a high immunity to > EMI pickup this could prove very revealing. > It sounds fine with headphones, and also sounds fine going into my at home stereo: quiet and lovely. However, my stereo is *not* grounded: it has only a 2-prong plug. Likewise, the wall-warts for both the FA-66 and the Audiophile are not grounded. Maybe I should try to find a grounded wall-wart? How I wish these things were powered by their USB/Firewire cables! - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFGUeuhe8HF+6xeOIcRArTgAKCI0xJ1rdKW4ouD6/VdM25P2VEj5gCg77ny XmtIDXuVpFTl18SoLHO+MgU= =TVsb -----END PGP SIGNATURE----- _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
