Description
Auto-Switcher
The Radial SW8™ is an 8-channel auto-switcher that allows you to set up a redundant backup system by automatically switching between two multi-channel playback systems.
Features
- Switch between redundant playback systems
- Manual or seamless automatic switching
- Line level or transformer isolated mic level outputs
- May be linked for larger playback systems
Under the Hood
Designed primarily for live concerts and stage shows where backing tracks are used for orchestration, vocals and sound effects, SW8 employs an adjustable gate to detect a machine malfunction and automatically switch to a second backup machine to deliver a seamless performance. The SW8 will monitor any continuous audio signal such as SMPTE on the main playback system, and should the signal drop it will automatically switch to the backup. Switching can also be performed manually on the front panel, or by using a footswitch such as the Radial JR2. For larger systems beyond 8 channels, multiple SW8s may be linked together.
SW8 Applications
- 'Fly-in' Scenario
- This is setup is most commonly employed in the club scene and for fly-in promotional TV and video tours. In these scenarios, everything is mixed to a single stereo or even a mono output to feed the PA system and broadcaster. Some bands have done this with great success but this takes a lot of hard work to get the balance just right.
- 'Moderate' Scenario
- Here, 16 backing tracks are mixed down into stereo subgroups. This is the most common form of backing tracks as the musicians are doing all of the main work and the playback machines are adding icing to the cake. In these systems, you'll see extra left and right drums, percussion & beats, keyboards and orchestration, guitars & backing vocals and often all of the vocal effects.
- 'Superstar' Scenario
- Everything is on backing tracks: drums, electronic beats, instruments, backing vocals, vocal effects and in some cases, even lead vocals. Here we are talking about the various pop bands that incorporate huge, over-the-top production. Every track is broken out to individual channels so the monitor engineer can send different players different mixes & the front of house mixer has total control.
Specifications
The Radial SW8 is an 8-channel auto-switcher designed to switch balanced and unbalance audio sources and deliver them via a straight wire or transformer coupled interface. As solid wire specifications cannot be measured, the graphs below depict the performance of the SW8 using the transformer isolated XLR outputs. it is also important to note that the direct box outputs are designed to reduce a +4dB balanced source to a lower mic level source, thus resulting in a -20dB drop in level. This enables the SW8 to be used in a typical snake system without fear or overload and crosstalk.
- Audio circuit type: Passive signal path with active relay switching
- Transformer: Eclipse ET-DB2
- Number of channels: 8
- Frequency response: 20Hz ~ 20KHz
- Dynamic range: >120dB
- Gain: -20dB
- Total harmonic distortion: 0.002%
- Intermodulation Distortion: >0.002%
- Phase Deviation: -2° @ 20Hz
- Input Impedance: 140k Ohms, balanced
- Output Impedance: 150 Ohms, balanced
- Common Mode Rejection Ratio: -112dB at 50/60Hz
- Equivalent Input Noise: -95dBu
- Noise: -115dBu
- Maximum Input: 26dBu
Features
- Input pad, Ground lift, Remote Footswitch
- Input Connectors: 1/4" TRS, D-sub
- Output Connectors: XLR, D-sub
- Extras: Contact Alarm Input, JR-2 XLR
General
- Construction: 14 gauge steel chassis & outer shell
- Size (L x W x D): 17.5" x 6" x 1.75" (44.5cm x 15.25cm x 4.5cm)
- Weight: 9.2 lb (4.2kg)
- Shipping size (L x W x D): 22" x 10.375" x 4.5" (55.9cm x 26.4cm x 11.4cm)
- Shipping weight: 9.7 lb (4.4 kg)
- Power: Two +15VDC/400mA power supplies included
- Conditions: For use in dry locations only between 5°C and 40°C
- Warranty: Radial 3-year, transferable
