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Manual Calibration Notes
• 0 dB on the output meter represents +4 dBm (and –12 dBFS digital) when
• For proper calibration, follow the entire calibration procedure in order.
• This example uses 3.5 dB overbias. The amount of gain reduction in step 12
• Generally speaking, higher
• We recommend leaving the record SHELF EQ control in its default position.
• The Ampex ATR-102 hardware has an additional gain control via a set-
• We chose to calibrate our reference machine using MRL fringing-compen-
• Tape Type 111 uses a calibration level of 0 dB. This value is not available
• The plug-in operates at an internal level of –12 dBFS. Therefore a digital sig-
• The included artist presets demonstrate how manual calibration can be
Tip:
UAD Powered Plug-Ins Manual
Reproduce
is in its calibrated position, which is marked with the "red arrow
sticker."
determines the amount of overbias. In some cases we used more than
3.5 dB of overbias to achieve a flatter response.
Meter
values for a given reading on the Meters. If Bias is set very low, dis-
tortion may increase at lower Cal Levels.
screw (like Repro HF/LF, Bias, etc) which is usually used for manual gain
calibrations. This control is not available in the plug-in because it would be
redundant – the Reproduce control performs the same function.
sated calibration tapes, without later adjusting the Repro LF EQ for unity
gain using external test tones. Therefore the calibrated values in the plug-in
reflect this alignment method. In-depth discussions about fringing compen-
sation and system alignment are beyond the scope of this manual; thorough
resources are available from the MRL website at:
in the plug-in, but it can be emulated by setting the CAL level to +3 dB, then
reducing the input level (Record knob) by –3 dB and increasing the output
level (Reproduce knob) by +3 dB.
nal with a level of –12 dB below full scale digital (0 dBFS) at the plug-in in-
put will represent 0 dB on the plug-in meters (if the plug-in is calibrated).
used to obtain sonic variations (see
For easy recall in future sessions, save unique calibrations as a preset.
Cal Level
values will have higher
"Artist Presets" on page
- 170 -
Distortion
http://www.mrltapes.com
150).
Chapter 12: Ampex ATR-102
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