Yorkville Sound nx55p Line/CD Control, Treble and Bass Controls, Green PWR LED, Yellow Limit LED

9. Line/CD Control

This control adjusts the volume level of devices plugged into the Line/CD input. The signal out to other cabinets, from this device, through the link connections will be affected as well. A line-level signal and microphones can be con- nected simulataneously.

10. Treble and Bass Controls

These controls affect the signals from devic- es plugged into the Line/CD and Mic inputs. The signal out, to other cabinets, through the Link will also be affected. These controls do not affect signals coming into the cabi- net from the Link connections.

11. Green PWR LED

Illumination indicates that AC power is on and the fuse is functioning.

12. Yellow Limit LED

This indicates that the cabinet is operating at full power and the limiter(s) are actively reduc- ing the signal level. It’s all right to operate in limiting as long as the clip light is not constantly on. The Limit light does not indicate low fre- quency processing action. There are separate limiters for the woofer and horn. This LED will indicate operation of either limiter.

13. Red Clip LED

The illumination of this LED indicates that the signal level is excessive and may cause distor- tion. Reduce mixer levels or turn down the Level control (on NX55P) to reduce clipping.

14. Power Switch

This turns the power On and Off to the cabi- net. Note; a cabinet that is turned off, but is one of the cabinets in a chain might cause hum (or buzz) in the other cabinets.

15. Fuse

The mains fuse should never blow even in extreme operating conditions. A blown fuse will generally mean that excessive mains voltage has been applied or there’s a serious fault with the unit. Self re-setting thermal switches are built into the power transformer as well as on the internal heat sink. These will not trip even under the most extreme operating condi- tions and are provided only for safety reasons. Thermal margins may be compromised when operating facing straight up, straight down or while operating in direct sunlight!

A note about unbalanced operation: When connecting an unbalanced source (such as a mixer with RCA outputs) to balanced inputs such as an NX55P, the best hum rejection can be achieved by running a balanced connection right to the unbalanced plug. The return connection should be connected to ground at the unbalanced plug. The NX55P does not connect the AC power ground directly to the input signal ground. This will eliminate most ground problems.

NX55P

CLIP LEVEL

0

LIMIT

00 dB 6

PWR

OUTPUT LINK

BAL

LF ROLLOFF

60Hz 100Hz

MIXER

OFF ON

INPUT

TREBLE BASS

12	dB	12	12	dB	12
	MIC		LINE/CD

0 10 0 10 M I X E R

LINE / CD

MIC

OUTPUTINPUT

A-Z822 / 1v0 PR1

3