The Sonance 16-50 and 8-50 are multi-channel power amplifiers designed for premium distributed audio amplification. They are engineered to provide installation flexibility, low energy consumption, and audiophile sound in a compact 1U form factor.
Function Description:
These amplifiers are capable of driving multiple zones with audio from various sources. They can be configured for stereo or bridged operation, making them suitable for a wide range of applications, including driving passive subwoofers or outdoor satellite and subwoofer systems. The amplifiers also support paging and doorbell chimes, which can be heard alongside other audio sources.
Important Technical Specifications:
Sonance 16-50 Amplifier:
- Number of Channels: 16 (8 stereo zones)
- Power Output - 8 Ohms: 50 watts RMS per channel (all channels driven)
- Power Output - 4 Ohms: 100 watts RMS per channel (all channels driven)
- Power Output - 8 Ohms (Bridged): 200 watts
- Frequency Response: 10Hz-22kHz (+/-1dB)
- Signal to Noise Ratio: >100 dB A-wtd
- Crosstalk: Better than -80 dB, typical, 1kHz
- Voltage Trigger Input: 3-30Vdc
- Audio Sense Threshold: 1.5 mVrms
- Crossover Filter: OFF/80Hz/120Hz
- AC Mains Voltage: 100-240V~/50-60Hz
- Rack Space Requirement: 1U - Full Width
- Dimensions w/Feet (WxHxD): 17.2" x 2.2" x 12.3" (436mm x 55mm x 312.5mm)
- Dimensions w/Rack Ears no Feet (WxHxD): 19" x 1.75" x 12.3" (482mm x 44mm x 312.5mm)
- Shipping Weight: 13.4 lbs (6.1kg)
Sonance 8-50 Amplifier:
- Number of Channels: 8 (4 stereo zones)
- Power Output - 8 Ohms: 50 watts RMS per channel (all channels driven)
- Power Output - 4 Ohms: 100 watts RMS per channel (all channels driven)
- Power Output - 8 Ohms (Bridged): 200 watts
- Frequency Response: 10Hz-22kHz, bandwidth limited
- Signal to Noise Ratio: >100 dB A-wtd
- Crosstalk: Better than -80 dB, typical, 1kHz
- Voltage Trigger Input: 3-30Vdc
- Audio Sense Threshold: 1.5 mVrms
- Crossover Filter: OFF/80Hz/120Hz
- AC Mains Voltage: 100-240V~/50-60Hz
- Rack Space Requirement: 1U - Full Width
- Dimensions w/Feet (WxHxD): 17.2" x 2.2" x 12.3" (436mm x 55mm x 312.5mm)
- Dimensions w/Rack Ears no Feet (WxHxD): 19" x 1.75" x 12.3" (482mm x 44mm x 312.5mm)
- Shipping Weight: 12.7 lbs (5.8kg)
Usage Features:
- Input Options: The amplifiers offer flexible input connections including 'Local' RCA inputs for individual zone use, and 'Bus A' and 'Bus B' inputs for distributing a single source to multiple zones. DIP switches allow for input assignment and blending of auxiliary sources like paging or doorbell chimes.
- Bus A Sub Out: Features a subwoofer output connection that sums the signal from the LEFT and RIGHT IN connections. An X-OVER switch (80Hz or 120Hz) applies a low-pass filter to the SUB OUT signal and a matching high-pass filter to BUS A signals routed to amplifier zones.
- Bridging Channels: Adjacent pairs of amplifier channels can be bridged to invert the phase to the right channel and drive the left and right channels together for higher output. This mode is useful for higher power applications but requires speakers with a minimum impedance of 8 Ohms.
- Auto On Triggering: The amplifier can automatically turn ON based on three modes:
- Voltage: Activates when a 3-30V DC voltage is detected at the 'V Trigger' inputs.
- Audio: Activates when an audio input above 1.5mV is detected at any selected input (Local and/or Bus). The amplifier will turn off after 15 minutes of no input signal.
- OFF (Always On): The amplifier remains ON and does not enter standby mode.
- 12V Trigger Output: Provides 12V DC whenever the amplifier is active, with a maximum current draw of 100mA.
- Zone Trim Controls: Each zone has a volume adjustment (TRIM control) on the rear panel. This control sets the minimum gain and is intended to prevent speaker distortion and damage, as well as balance sound levels across different zones or channels.
- Protection Circuitry: Includes a multi-stage protection system to prevent damage to the amplifier and speakers. This includes:
- Amplifier Channel Protection: Mutes affected channels in case of short circuit or extremely low impedance.
- Amplifier Over Temperature Protection: Activates if the power supply heat sink temperature exceeds design maximum, disconnecting all channel outputs and indicated by a flashing red status indicator.
- Speaker Connections: Removable Speaker Block Connectors accept up to 12-gauge wire. Connections are clearly marked for stereo and bridged modes.
- Status Indicators: Front panel LEDs indicate system status (white for standby, blue for active, flashing red for fault) and zone status (off for inactive, white for ready/no signal, blue for active/signal detected, flashing yellow for overdriven, red for protection).
Maintenance Features:
- Cooling: Features fan-assisted cooling with vents on both sides of the chassis. Requires at least 3" (75mm) of clearance on the sides for proper airflow.
- Cleaning: Can be cleaned with "canned air" or by wiping with a soft cloth. Solvents should not be used as they may damage the amplifier.
- Troubleshooting Guide: The manual provides comprehensive troubleshooting steps for common issues such as no power, no audio, no bass/hollow-sounding voices, low audio volume, distortion, hum, and illuminated protection LEDs.
- Speaker Protection: Recommendations for setting a safe, maximum volume limit for each channel pair to prevent speaker damage from overdriving.
- Rack Mounting: Ships with short rack ears for standard rack mounting. Threaded inserts on the sides allow for flexible mounting configurations.
- Shelf Mounting: Includes four feet for shelf mounting, which can be removed for stacking.
- Unpacking and Record Keeping: Users are advised to save the original box and packing material for future service or relocation. Critical information such as serial number, date of sale, dealer name, and contact info should be recorded for warranty claims and support.
- Replacement Parts: A list of replacement accessory parts (Amp Feet, Rack Ears, Speaker Block Connector, Voltage Trigger Block Connector, AC Cord) and their SKUs is provided, along with contact information for customer service.
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