SW4™ Specifications

The Radial SW4 is, for the most part, a straight wire AB box that is able to handle tremendous signal levels without distortion. The use of oversized transformers assures even the deepest bass frequencies will gracefully pass. These claims are confirmed with a ruler flat frequency response, virtually zero phase shift, and a residual noise level that is below the threshold of the test equipment. This makes the SW4 a perfect solution for just about any type of audio signal.

SW4 Block Diagram

Click to enlarge
Audio Circuit Type:  Passive Transformer Coupled with Relay Switching
Number of Channels: 4 x AB select
Frequency Response:  10Hz to 40Khz
Dynamic Range:  136dB
Total Harmonic Distortion:  0.002%
Phase Deviation:  <3° at all frequencies
Inermodulation Distortion:  0.01%
Input Impedance:  Load impedance in parallel with 10K
Maximum Input:  +26dBu channel to channel
Maximum Input:  +17dBu channel to bus
Channel to Channel Gain:  -0.26dB with 10k Ohm load
-2.3dB with 600 Ohm load
Channel to Bus Gain:  + 8dB with 10k Ohm load
Channel Output Impedance:  160 Ohms
Bus Output Impedance:  500 Ohms
Transformer: Eclipse ET-LD2 line output
Input Pad:  Variable trim control 
Switches:  AB select on each channel
PFL (pre-fade listen): A & B per channel, master bus
Bus:  Master bus out with headphones
XLR Configuration:  AES standard pin-1 ground, pin-2 (+), pin-3 (-)
Input Connectors: XLR female
Output Connectors: XLR male, ¼" guitar
Bus Output: Stereo or mono assignable
Ground Lifts: On all channels & guitar amp outputs
Power:  External 100V - 240V AC with 48V Phantom
Construction:  14 gauge steel chassis & outer shell
Finish: Durable powder coat
Size (L x W x H): 17.5" x 6" x 1.75" (44.5cm x 15.25cm x 4.45cm)
Shipping Size: (L x W x H): 22" x 10.375" x 4.5" (55.9cm x 26.4cm x 11.4cm)
Shipping Weight:  
Conditions: For use in dry locations only between 5°C and 40°C
Warranty:  Radial 3-year, transferable
Specifications are subject to change without notice.