User guide

Precision 8 OPERATION MANUAL

Front Panel Controls

1 Phase reverse selector. Output signal polarity is reversed when the φφ button is

depressed.

2 Phantom power selector. Phantom power (+48V) is activated when the 48V button

is depressed. Avoid selecting phantom power if you are using a ribbon

microphone. While not required, it is advisable to de-select 48V when using a

dynamic microphone or a DI input.

3 Overload warning indicator. OL illuminates (and holds) at +26 dBu which is 5 dB

below actual overload. Depress RESET 10 to clear OL.

4 Peak-Hold indicators. These are provided to help optimize level setting when the

Precision 8 is remotely located from the device to which it is connected. The PK

indicator activates (and holds) at the level selected on the PEAK REFERENCE

selector 9 . The -3 indicator activates at peak level minus 3 dB. The -6 indicator

activates at peak level minus 6 dB. Generally, the PEAK REFERENCE selector is

set for the maximum level you want to present to your mixing console, recorder,

etc. Depress RESET 10 to clear PK.

NOTE: Only the OL light indicates impending preamp overload. The red PK light

simply indicates that the signal has exceeded the level selected on the PEAK

REFERENCE switch.

Note that the overload level of the Precision 8 is +31dBu at the output. This level

exceeds the input capability of some devices (check manufacturer’s specifications).

In other words, it may be possible to cause overload distortion in the connected

device even though the Precision 8 level indicator does not show a red light. We

TRUE

systems

1 2

SIG

-6

-3

48V

SIG

-6

-3

48V

SIG

-6

-3

48V

MID

SIDE