T+A Elektroakustik CC 820 M 사용자 설명서

Setting the recording level

Music recordings sound especially lively if the dynamic
range is wide. The dynamic range is the difference in
level between the very quiet and the very loud passages.

For  this  reason  the  recording  level  must  be  adjusted  so
that  the  loudest  passages  are  within  the  dynamic  range
of  the  tape  material,  otherwise  the  result  will  be
distortion.

On the other hand the recording level must not be set too
low, otherwise tape hiss will be obtrusive in very quiet
passages.

The CC 820 M can display the peak input level on the
screen, and you can alter it over a range of
40 increments (0 ... 39).

After selecting the Recording Level process the display
shows the current level (0 ... 39) in place of the digital
tape counter.

You can now set the record level using the



 and



 buttons, continuing to make adjustments until the
peak display on the VU meter only exceeds the 0 dB
mark now and then.

Once you have set the optimum recording level, press
the



 button briefly again to call up the Balance

process.

Note:

The optimum recording level will vary slightly depending
on the programme source and the tape material. If you
are not sure, make a test recording before recording the
whole work.

Balance adjustment

The volume of the left and right record channels can be
set to different values to compensate for unequal input
signal levels.

The CC 820 M provides a means of showing the average
input level values on the screen, so that you can balance
them out at different volume.

Call up the manual balance process; in place of the
digital tape counter the display now shows the current
balance setting:

L+nn

The stereo centre is offset to the left by
'nn' steps.

BAL

The stereo centre is at neutral.

R+nn

The stereo centre is offset to the right by
'nn' steps.

The channels can be set to the same level on the VU
meter using the



 and 



 buttons while the

balance display is on the screen.

After you have set the channels to equal levels, press
the



 button again briefly to call up the 'Manual

Bias Correction' process.

Manual BIAS correction

The automatic calibrator adjusts the tape deck to the
optimum value for tape bias, matching the type of tape in
the machine.

If the music source is deficient in high frequencies, the
CC 820 M allows you to adjust the high frequency range
to suit your individual preference. This is done by making
a manual adjustment to the bias setting.

Select  the  Manual  Bias  Correction  process,  and  the
display will show the current bias  setting  as  a  numerical
value  between  '

BIAS

BIAS -7

-7

' and '

BIAS

BIAS +8

'. While the bias

display is on the screen you can alter the setting using
the



 and 



 buttons.

After you have set the bias to the desired value you can
press the



 button again briefly to switch back to

"record ready" mode.

Notes:

The smaller the selected value, the lower the bias
current, which equates to a higher proportion of high-
frequency signal for the recording.

If you encounter distortion on playback you should
increase the value again.

Before you alter the bias setting please be sure to note
the bias value which the tape calibrator has chosen. This
allows you to reset it if the recording results are worse
after you have made a change.