On Mon, 10 Sep 2001, Danilo Godec wrote:
Hi,
> I have a Sony MZ-R70 and occasionaly I connect it to my amplifier (at home
> I only have a CD player and the amplifier). The problem is that MDs are
> too quiet - I guess the 'headphones out' is not quite the same as 'line
> out' in the terms of voltage or signal amplitudes...
It depends on the headphones out power. Empirically, when you
connect a low impedance, high voltage signal (headphones) to a high
impedance, low voltage signal (line in) the input's higher impedance makes
the voltages "compensate", and a little volume adjusting does the rest.
Dunno how powerful the MZ-R70 headphones out is, but it usually suffices
to put the volume at 75%. If even at 100% volume it doesn't feed the line
in enough, maybe the MZ-R70 isn't very powerful, or the MD's were recorded
at low volume... take a look at the dB's indicator when playing them...
> Anyway, I'd like to check if someone can verify that and if someone knows
> of a cheap pre-amplifier that would help with that (a little bit of DIY
> is OK)?
How were the MD's recorded? from original CD's, and a digital
connection? if they were recorded via analog, try to re-record them with
settings so that signal peaks at -4/-2 dB. If your problem is low volume
on the MD's, no preamplifier is gonna help you, you'll only get
distortion: usually the headphones out/line in matches up very closely
with a little headphones volume fiddling. If you surpass the line-in
max voltage level you'll get distortion, and could even damage it...
Hope it helps,
*****---(*)---**********************************************---------->
Francisco J. Montilla - System & Network admin - Seville - Spain
pacopepe>AT>insflug.org - irc: pukka - DJB fan
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