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Redback® Proudly Made In Australia 15
Redback® Hearing Loop Ampliers
Specications
A 4210 drive current: 3.5A RMS, 5A Peak
A 4212 drive current: 8A RMS, 11A Peak
Loop requirements: 0.2Ω to 1.7Ω preferred range
Frequency response: 100Hz to 5kHz @ -2dB, 80Hz to 6kHz @ -3dB target.
THD: <0.25% @ 50% drive
Compressor: 2:1 for dynamics control (fast attack)
Input: 3 pin XLR, Stereo RCA
Output: Loop connection via pluggable terminals
Power: 240V ac
Dimensions: 432W x 380D x 88H
*Specications subject to change without notice
4.0 TERMS AND ABBREVIATIONS
Terms and Abbreviations Explanations
AFILs Audio Frequency Induction Loops
FS Field Strength (Magnetic)
FSM Calibrated Meter to indicate magnetic Field Strength (Baseband Audio)
T (“T” setting) Telecoil
mA/m (H) Magnetic Field strength measured in milliAmperes per metre
0.125secs integration time An extended processing time measurement for level meter (not readily
available but normal PPM reads approx. 30% higher)
dB L Expressing dB levels in reference to Induction Loops
A-weighted Filtered curve used for acoustic measurements
rms Root-mean-squared (refers to sinewave signal level)
Spill Unwanted magnetic signal transmitted outside the loop
5.0 SPECIFICATIONS
Measurements referenced to 1kHz
Should a product become faulty please contact us to obtain a return authorisation number. Please ensure you have all the
relevant documentation on hand. We do not accept unauthorised returns. Proof of purchase is required so please retain
your invoice.
All Australian made Redback products are covered by a 10 year warranty.