Rolls SX95 - User Manual

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SX95 Stereo Sub woofer Filter

Connection guide

Rolls Corporation

Salt Lake City, UT

9/18

Made in USA

ww.rolls.com

What's in the box?

1 - Made in USA SX95

1 - 15V power supply PN PS27s

1 - This owners manual

Made in USA

ww.rolls.com

SPECIFICATIONS:

Input Impedance: 10K Ohm

Output Impedance: 1K Ohm

Headroom: +10 dBV

Power Requirements: 12 - 15 VDC, 500 mA;

Rolls part number PS27s

Size: 4” x 4.5” x 1.5”

Weight: 1 lb.

• 12 dB/Octave roll o

• Stereo RCA Input and Outputs

• 36Hz to 200 Hz crossover range

• Mono or Stereo Sub Output

Connect the SX95 to the output of

a preamplier, mixer or other device

containing a stereo signal. This sig-

nal should be Line-Level, or refer-

ence 0 to +4 dB.

Set your ampliers to their normal

operating level (many ampliers are

simply set at their full volume level).

Carefully begin increasing the SX95

Level control until you reach a de-

sired volume level.

Adjust the Sub Frequency to the de-

sired level for your sub woofers. We

recommend selecting the 0 degrees

phase setting on both channels to

start, then make your adjustments

later as needed.

The Rolls SX95 is a true stereo sub

woofer crossover. It also features a mono

or stereo selection switch to utilize the

SX95 in mono. The SX95 features a true

pass thru output that will allow proper

connection to your system without any al-

terations to the original signal. The SX95

is a perfect way to separate low frequen-

cies from line level program material in

any system, home, professional or an

installation. With a frequency range of

36Hz to 200Hz, and an external power

supply for noise reduction the SX95 will

allow you to have complete control of you

subs.

CONNECTION:

DESCRIPTION:

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Summary

Product Description and Operation

SX95 Product Description

Details the Rolls SX95 as a true stereo subwoofer crossover with mono/stereo selection and a pass-thru output.

SX95 Connection Guide

Instructions on connecting the SX95 to audio sources and setting amplifier levels and sub frequencies.

Technical Specifications

SX95 Key Specifications

Lists input/output impedance, headroom, power requirements, size, weight, and feature highlights.

Device Controls and Connections

SX95 Front Panel Overview

Diagram showing and labeling the Sub Level, Mono/Stereo switch, Frequency, and Phase controls.

SX95 Rear Panel Connections

Diagram identifying INPUT, PASS THRU, SUB OUTPUT RCA jacks, and POWER DC input.

Summary

Product Description and Operation

SX95 Product Description

Details the Rolls SX95 as a true stereo subwoofer crossover with mono/stereo selection and a pass-thru output.

SX95 Connection Guide

Instructions on connecting the SX95 to audio sources and setting amplifier levels and sub frequencies.

Technical Specifications

SX95 Key Specifications

Lists input/output impedance, headroom, power requirements, size, weight, and feature highlights.

Device Controls and Connections

SX95 Front Panel Overview

Diagram showing and labeling the Sub Level, Mono/Stereo switch, Frequency, and Phase controls.

SX95 Rear Panel Connections

Diagram identifying INPUT, PASS THRU, SUB OUTPUT RCA jacks, and POWER DC input.

The Rolls SX95 is a true stereo subwoofer crossover designed to separate low frequencies from line-level program material in various audio systems, including home, professional, and installation setups. Its primary function is to provide precise control over subwoofer output, ensuring optimal sound quality and system integration.

Function Description:

The SX95 acts as a filter, allowing users to define a specific frequency range for their subwoofers while passing the full-range signal through to other components without alteration. This is achieved through a true pass-through output, which ensures that the original signal remains unaffected. The device features a mono or stereo selection switch, offering flexibility in how the subwoofer output is managed. This allows users to combine the low-frequency content from both channels into a single mono output for a single subwoofer or maintain separate stereo low-frequency outputs for a stereo subwoofer setup. The crossover employs a 12 dB/Octave roll-off, providing a smooth and effective transition between the filtered low frequencies and the rest of the audio spectrum.

Important Technical Specifications:

Input Impedance: 10K Ohm
Output Impedance: 1K Ohm
Headroom: +10 dBV
Power Requirements: 12-15 VDC, 500 mA (Rolls part number PS27s)
Size: 4" x 4.5" x 1.5"
Weight: 1 lb.
Crossover Range: 36Hz to 200Hz
Roll-off: 12 dB/Octave
Inputs/Outputs: Stereo RCA Input and Outputs
Sub Output: Mono or Stereo

Usage Features:

The SX95 is designed for straightforward integration into existing audio systems.

Connection: It connects to the output of a preamplifier, mixer, or other device providing a stereo line-level signal (0 to +4 dB). The pass-through RCA jacks allow the full-range signal to continue to other components, such as main amplifiers. The sub output connects to a power amplifier or other subwoofer device.
Level Control: A "SUB LEVEL" knob allows users to adjust the overall volume of the subwoofer output, enabling precise balancing with the main speakers.
Frequency Control: The "FREQUENCY" knob sets the crossover point for both left and right sub outputs, ranging from 36Hz to 200Hz. This allows users to tailor the low-frequency response to their specific subwoofers and room acoustics.
Phase Control: Independent "PHASE" switches for the left and right sub outputs (0° and 180°) are provided. This feature is crucial for correcting phase cancellations that can occur when the subwoofer's output combines with the main speakers, ensuring a cohesive and impactful bass response. Users are advised to start with the 0° setting and adjust as needed.
Mono/Stereo Switch: A dedicated switch allows users to select between a mono or stereo subwoofer output. In the mono position, the low-frequency content from both input channels is summed and sent to a single mono sub output. In the stereo position, the left and right low-frequency channels are kept separate and sent to their respective sub outputs.
External Power Supply: The unit utilizes an external 12-15 VDC, 500 mA power supply (Rolls PS27s) for noise reduction, contributing to a cleaner audio signal.

Maintenance Features:

The manual does not explicitly detail maintenance features beyond the general expectation of proper handling and connection.

Power Supply: The use of an external power supply helps isolate the unit from potential power line noise, contributing to its longevity and performance.
Construction: The compact and robust design (4" x 4.5" x 1.5", 1 lb.) suggests a durable unit suitable for various environments.
Made in USA: The "Made in USA" designation implies a certain standard of manufacturing quality.

In summary, the Rolls SX95 provides comprehensive and user-friendly control over subwoofer integration, making it an essential tool for achieving optimized low-frequency performance in any audio setup. Its precise controls, flexible output options, and robust design ensure a high-quality audio experience.