Input Jack, Link, PSA1 Level Control | Yorkville Sound YS1098

3. Input Jack

This female-XLR / ¼-inch TRS combi-jack accepts either line level XLR or ¼-inch TRS patch cables. For best noise reduction use balanced cables. Unbalanced ¼-inch TS cables can be used for unbal- anced signal sources if needed.

Note: Both ¼-inch and XLR inputs have identical functionality.

4. Link

This XLR male connector can be used with a standard XLR cable to daisy-chain up to ten PSA1 cabinets without signal degradation. Simply loop from one cabinet’s Link jack to the next cabinets Input jack.

5. PSA1 Level Control

This control adjusts the volume level of the PSA1 relative to the input signal level. Mixers and other audio sources connected to the PSA1 tend to have different output voltages, which mean the level control on the PSA1 is used to fine tune the cabinet’s volume relative to the mixer settings. It is per- fectly acceptable to set the PSA1 Level above or below the center 0 dB setting. Normal operation will be between 10 o’clock and 2 o’clock.

6. LF (Low Frequency) Mode Pushbutton Switch

The LF switch allows the user to configure the PSA1 to be used with or without a subwoofer. In Fullrange mode, the cabinet’s internal high-pass (low-cut) filter is set to 40 Hz.When using the PSA1 with a subwoofer, such as the PSA1s, depress the LF button to set the internal high-pass filter to 100 Hz. Most powered subs have their low-pass filter set at around 100 Hz. If yours is variable, set it at 100 Hz for use with the PSA1.

7. HF (High Frequency) Mode Pushbutton Switch

The HF Mode switch is used to set the relative level of the horn in the PSA1. In normal use, set the HF switch to Flat. If you are stacking PSA1 cabinets into an array, you may notice an increase in bass and a lack of treble. This is due to low frequency coupling between the cabinets of the low frequency drivers. Depress the HF switch on all cabinets to increase the high frequency output of the cabinets by 3 dB.

The HF switch can also be used in applications where the loudspeakers are situated far from the audience. The increase of treble will help overcome the natural loss of high frequency due to travel- ing a greater distance.

Another option is to apply HF boost to only the top box in an array. In this configuration, the un- boosted bottom box would cover the near field and the HF boosted top box would cover the far field.

8. Clip and Limit Indicators

The Clip and Limit LED indicators illuminate to guide the user to proper operating levels.

Illumination of the yellow Limit LED indicates that a level has been reached where the PSA1 limit- ers are reducing the signal internally to prevent damage or distortion. It also indicates that further increases in input level or increasing the PSA1 Level control position will not appreciably increase acoustic output. The red Clip LED indicates that the input level is excessive and further increases in level will cause severe distortion. This happens at very high input signal levels in excess of 13V peak. The input signal should be reduced at the source immediately until Clip activity ceases.