Date: Sun, 14 Oct 2001 07:05:38 From: "neil barnes" <[EMAIL PROTECTED]> Subject: RE: [LIB] TDK Digital Music Card 9000
>Date: Sun, 14 Oct 2001 10:30:09 +0800 >From: "Geoff --" <[EMAIL PROTECTED]> >Subject: RE: [LIB] TDK Digital Music Card 9000 > >I've used a 100ct with the built-in sound card running into my car stereo >via the tape deck. It's noticeably flatter than playing a CD on my car >stereo, but OK for my tastes. > >I don't know if the degradation is the Lib's fault or the tape deck >converter's fault. > >Geoff I've had occasion - in the past - to do a lot of tests on laptop audio systems (we do an awful lot of editing and playback using laptops directly these days) and though I'm not up with the latest cards, the Lib50 isn't bad... o sig noise is around -60~-65dB (assuming some headroom) - the external power supply is good for induced noise, there's not much advantage to using the internal battery. o frequency response is limited at the bass end by a (sb compatible) switched filter which has a turnaround at IIRC 300Hz for a 44k sample rate (lower for a lower rate) and by a Nyquist filter at around 18kHz (for 44KHz) - but the top end is going to depend a lot on your compression ratio anyway. o The DAC can't cope with 16 bits at high speed - there's asymmetric slew rate limiting in the drivers. Keep the volume down on the mixer and don't try and use the top bit :) Now obviously this is less than excellent for a hi-fi nut...but it's a damn sight better than a commercial cassette. Going through a cassette adaptor will cost some HF but it's not usually too bad - what you won't get is heavy bass. But the car is such a devastating environment in which to listen to any audio system critically, I really wouldn't bother without a lot of back to back tests. (Note - tests done on a sample of one which has since gone to its reward :( ) Neil _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
