Hafler IRIS manual

Remote V/B

Resolution

Record Security

and Umbilical

systems

Note: Which V/B knob-set is in command is unaffected by ANY KEYS-remote or preamplifier. It depends ONLY in where the LAST V/B command came from (including the effects of pream- plifier power-up discussed earlier).

CAUTION:

Since the IRIS remote is fun for many adults, it is likely that small children will also find it so. After a system turn-on, the REMOTE knobs may not be set where you left them at last listening. If you

then TOUCH either remote knob, you may suddenly have a lot more level than you expected!

Your instinctive reaction of quickly reducing the remote VOL- UME setting will take this level down very quickly. However, in such situations, a better approach is to use a remote KEY to either (-20dB) MUTE the system, or select an unused or dead input-BEFORE TOUCHING either remote knob then restore the remote VOLUME control to normal level and operate as usual.

The preamplifier’s CYBER-OPTIC level-control system has essentially infinite resolution-as no digital steps are used. In the remote V/B transmission mode IRIS employs 8-bit or 256-step format to obtain resolution essentially indistinguishable from preamplifier panel operation. For VOLUME, the command step-size is approximately 0.25dB, increasing in the deep- cutoff region. For BALANCE, the command step-size is typically 0.1dB.

Engage either RECORD 1 or 2 on your preamplifier. You will find that most of your remote KEY functions are not being accepted at the preamplifier, but VOLUME BALANCE, MUTE AND NORMal are working as usual. This unique IRIS feature allows you to retain convenient remote control of those functions which come AFTER the RECORD OUTPUT jacks in the preamplifier signal path, but keeps you from accidentally input- ting any commands which would spoil your recording process.

An INTERRUPTED flashing of the preamplifier’s MUTE indica- tor tells you which functions it will not accept during this safety mode.

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