Yorkville Paraline Series PSA1s Powered Subwoofer

Important Safety Instructions

[High Voltage Symbol] This lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

[Do Not Stack Symbol] The DO NOT STACK symbol is intended to alert the user that the product shall not be vertically stacked because of the nature of the product.

[Important Information Symbol] The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

[WEEE Symbol] Separate Collection

[Caution Hot Surface Symbol] CAUTION: HOT SURFACE

[Do Not Push or Pull Symbol] DO NOT PUSH OR PULL

[Caution Overhead Load Symbol] CAUTION: OVERHEAD LOAD

General Safety Precautions:

• Read and save all instructions.
• Clean only with a dry cloth.
• Keep packaging materials for potential service returns.
• Do not expose to rain or moisture; do not use near water.
• Connect only to the specified voltage.
• Do not defeat grounding-type plug safety features.
• Ensure proper grounding.
• Do not place on unstable surfaces; use only manufacturer-recommended carts/stands.
• Follow installation instructions and use manufacturer-specified accessories.
• Equipment suspended overhead requires secondary safeguards.
• Improper installation can lead to injury or death; seek professional help if unqualified.
• Avoid prolonged headphone use at high volumes.
• Do not place liquid-filled objects on the apparatus.
• Ensure adequate ventilation; do not install near heat sources.
• Terminals marked with a lightning bolt symbol are hazardous live and require installation by instructed personnel or ready-made leads.
• Protect the power cord from damage.
• Do not operate if the power cord is damaged.
• Disconnect power during lightning storms or long periods of non-use.
• Refer all servicing to qualified personnel.
• [Caution Symbol] To prevent electric shock hazard, do not connect to mains power supply while grille is removed.

PSA1s Introduction

Congratulations on your purchase of the PSA1s. The PSA1s is a premium-quality integrated subwoofer and power amplifier, designed as the perfect complement to Yorkville's Paraline Series PSA1 powered speaker.

Features and Operation

1. Input Level Switch

This switch selects between line-level and speaker-level signals:

• Line-level: Use when the PSA1s receives a signal from a processor, electronic crossover, un-powered mixer output, or a powered speaker cabinet's loop-through. Balanced ¼-inch (Tip, Ring, Sleeve) and/or XLR cables are recommended to minimize hum and buzz.
• Speaker-level: Use when the PSA1s receives a signal via a ¼-inch speaker cable from an amplifier or powered-mixer output, or from the parallel connection on an un-powered speaker cabinet. Connect like an ordinary speaker (in parallel using loop-through jacks) alongside passive full-range loudspeakers.

2. PSA1s Level Control

This control adjusts the amount of bass added to the sound system by the PSA1s. It allows for matching the subwoofer's sensitivity to companion full-range loudspeakers and achieving the desired system frequency response. Set this control by listening with a medium-level input signal, ensuring the limiter is not constantly active. A good starting point is the center detent, which provides full power when using the line input with a signal level of +3 dBV.

3. Input Jacks

The PSA1s features both ¼-inch and XLR inputs, along with Thru connections, for easy integration into most audio systems. The PSA1s can be connected before or after the full-range loudspeaker without altering the signal to daisy-chained loudspeakers or drawing power from the host amplifier/processor. An external crossover is not required. The Thru jacks also allow multiple PSA1s subwoofers to be connected in parallel.

4. Protection

The PSA1s incorporates internal protection mechanisms against over-current, over-excursion, clipping, and excessive average power output. If protection is activated, the output may be cut off, and the power LED may blink. The unit will attempt to restart. If the fault persists, contact an authorized service center. At high power levels, the limiter prevents distortion and over-excursion. For optimal results, set the system so the limiter LED occasionally flashes. The PSA1s includes a built-in stand mounting adapter compatible with the Yorkville SW-TUBEHD accessory for supporting one or two PSA1 cabinets on a flat, level surface. WARNING: Larger or heavier cabinets should NOT be used!

Specifications

Specifications subject to change without notice.

Block Diagram Description

The block diagram illustrates the signal flow and components of the PSA1s. The signal enters via the Input Mode selector (Line/Speaker), passes through Buffers, then to a Limiter and EQ. This processed signal is fed to a Class-D Power Amplifier, which drives the two Woofer drivers. The system also includes a Power Supply unit and protection indicators (Clip, Limit, Protect).

Warranty Information

Yorkville offers a two and ten-year unlimited warranty on this product, which is transferable and does not require registration. If the product fails within two years of the purchase date (ten years for the wooden enclosure), it will be repaired free of charge by returning it to the Yorkville dealer with proof of purchase. This warranty excludes freight charges, consequential damages, weather damage, improper installation, exposure to extreme humidity, accidents, or natural disasters. Consumables like vacuum tubes or par bulbs are not covered. Warranty is valid in Canada and the United States.

Contact Information

Canada:
Yorkville Sound Limited
550 Granite Court
Pickering, Ontario L1W-3Y8 CANADA
Voice: 905-837-8481
Fax: 905-837-8746

U.S.A.:
Yorkville Sound Inc.
4625 Witmer Industrial Estate
Niagara Falls, New York 14305, USA
Voice: 716-297-2920
Fax: 716-297-3689

Visit us online: www.yorkville.com

Quality and Innovation Since 1963