Channel Vision A0302 Speaker-to-Line-Level Converter — Installation & Reference Guide

Installation and reference guide for the Channel Vision A0302 Speaker-to-Line-Level Converter — a decorator-style wall plate that converts speaker-level audio to line level for re-amplification or subwoofer integration in whole-house audio systems.

Overview

The A0302 is a wall plate designed to convert speaker-level audio to line level, making it suitable for connecting to another amplifier — an ideal way to re-amplify whole-house audio systems that need a little extra power. The output can also be switched to mono mode, making it perfect for feeding a powered subwoofer. The decorator-style design and screwless trim plate blend with modern outlets and wall switches.

Features

• Provides line-level output for re-amplification
• SUB mode allows a subwoofer to be added to a whole-house audio system
• Decorator-style design with screwless wall plate
• Fits a standard single-gang junction box or low-voltage ring
• Easy installation

Connections

Front Panel

• L/R Line Level Outputs — connect to an external amplifier
• Sub Output (mono) — connect to an amplified subwoofer
• Amp-Link — connect to Channel Vision's A0240 amplifier

Rear Panel

• SUB / L/R Selector Switch — set to "SUB" when using a subwoofer, or "L/R" when connecting to an external amplifier
• JP1 (Speaker Level Inputs) — connect speaker wire from amplifier outputs
• JP2 (Speaker Level Pass Through) — connect speaker wire to speakers
• JP3 (Speaker Level Outputs from Amp-Link) — connect speaker wire to speakers
• TB1 (Terminal Block for Power & Line-Level Audio) — provides 24VDC output from the A0240 via Amp-Link connector; also allows line-level audio input
• Input Switch — switches the RCA output signal between the TB1 line-level input and the JP1 speaker-level input

Installation

The A0302 mounts to a standard single-gang box or low-voltage ring. Use the included mounting screws to attach the A0302 to the low-voltage ring, then snap on the screwless decorator trim plate. Includes: screwless decorator trim plate and mounting screws.

Common Configurations

Adding a Powered Subwoofer to Any Distributed Audio System

Set the input switch to "SPKRS IN" and the SUB/L-R switch to SUB mode. Speaker-level audio from the distributed audio amplifier (e.g. run through a VC-302 speaker-level volume control) is converted to a mono line-level signal to drive the amplified subwoofer, while the existing speaker pair continues to be powered by the distributed audio system.

Adding a Powered Subwoofer to A-BUS® Systems

Using an AB-124 keypad, set the input switch to "SPKRS IN" and place the switch in SUB mode. Speaker-level audio is converted to a mono line-level signal to drive the amplified subwoofer, while the existing speaker pair remains powered by the AB-124.

Using the A0302 with the Channel Vision A0240 Amplifier

The A0302 is the perfect complement to Channel Vision's A0240 amplifier via the Amp-Link connection — a clean way to interrupt speaker-level audio from a low-power system and output 40 watts per channel to the speakers. Set the input switch to "SPKRS IN" and place the switch in L/R mode: speaker-level audio is converted to line level to drive the A0240 Class D amplifier, and amplified audio is returned to the A0302 through the Amp-Link cable to power "B" speakers, while "A" speakers remain powered by the original keypad/amp.

Using the Input Switch

This switch selects which input connector routes signals to the RCA outputs and the Amp-Link connector:

• "SPKRS IN" — routes the speaker-level input from an amplifier.
• "L/R IN" — routes a line-level input (not amplified) connected via TB1. Note: the Left and Right line-level inputs share a ground connection.

Amp-Link Pin Out (for reference, used with Channel Vision A0240 amplifier)

Specifications (typical at 25°C)

Warranty

Channel Vision Technology will repair or replace any defect in material or workmanship occurring during normal use of this product with new or rebuilt parts, free of charge in the USA, for ten years from the date of original purchase — a no-hassle warranty with no mail-in card needed. This warranty does not cover damage in shipment, failures caused by other products not supplied by Channel Vision Technology, or failures due to accident, misuse, abuse, or alteration. Extended only to the original purchaser; a purchase receipt or proof of purchase date is required for warranty repairs.

Mail-in service can be obtained during the warranty period by calling (800) 840-0288 toll free — a Return Authorization number must be obtained in advance.

Contact / Support

Channel Vision Technology
234 Fischer Avenue, Costa Mesa, California 92626 USA
(714) 424-6500 • (800) 840-0288 • Fax (714) 424-6510
techsupport@channelvision.com • www.channelvision.com