Furman Sound HA-6AB manual Description of Controls, Front Panel

H A - 6 A B / H A - 6 A B E M a n u a l

DESCRIPTION OF CONTROLS:

FRONT PANEL

INPUT LEVEL: The Input Level control provides a means of scaling the effect of the individual head- phone volume controls. The Input Level should be adjusted so that there is an adequate range of volumes available at each listening position, so that any listener can be accommodated, and the average listener’s volume will be set at about halfway. The Input Level control is stereo; it affects both left and right channels simultaneously.

SIGNAL PRESENT LIGHTS: These yellow LED’s turn on whenever a signal exceeding 125 mil- livolts RMS (40 dB below full power) is present at the HA-6AB’s input jack. They will increase in brightness as the signal strength increases. This feature is very useful and can provide a clue to where the fault may lie if the expected program is not heard at the listening stations.

OVERLOAD LIGHTS: These LED’s glow red to indicate an overload in the HA-6AB. If the LED lights up, either the drive level to the unit should be reduced, or the setting of the Input Level con- trol should be reduced until the LED remains off. The lights turn on when the signal level at either output approaches .5 to 1 dB of clipping. Once

triggered, the lights will stay lit for a minimum of 50 milliseconds so they can be easily seen, even if the actual duration of the overload is much shorter.

HEADPHONE JACKS / VOLUME CONTROLS: Any type of headphones, wired with a standard 1/4” stereo phone plug, may be used success- fully. All six outputs receive the same stereo signal. They differ only in the individual volume settings.

SPEAKER-A BUTTON: Depressing this but- ton turns on the speakers connected to the SPEAKER-A banana jacks on the rear panel, and simultaneously turns off the signal to all the front panel headphone outputs.

SPEAKER-B BUTTON: Depressing this button turns on whatever is plugged into the SPEAKER- B SATELLITE/REMOTE XLR connector on the rear panel. This will be either a pair of speakers or a chain of HR-2 Remote Stations. Therefore, leave this button depressed when using Remote Stations. Depressing it does not turn off the front panel headphone outputs. See the section on the Rear Panel for speaker wiring.

POWER LIGHT: Glows red when unit is receiv- ing power and the ON-OFF SWITCH is in the ON position.

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