Instruction Manual

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WYRED 4 SOUND ST-SERIES v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 12 of 12
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ST-250
ST-500
ST-1000
Typical THD+N 8Ω (10W out) 0.009% 0.0027% 0.0055%
Power Output 8Ω @ 0.2% THD+N 100Wpc 250Wpc 570Wpc
Power Output 8Ω @ 1.0% THD+N 125Wpc 330Wpc 625Wpc
Power Output 4Ω @ 0.2% THD+N 195Wpc 550Wpc 1,140Wpc
Power Output 4Ω @ 1.0% THD+N 220Wpc 625Wpc 1,225Wpc
IMD (CCIF) 0.0005% 0.0005% 0.0005%
Transient Intermodulation (TIM) 0.004% 0.003% 0.005%
Output Idle Noise 90uV 80uV 80uV
Efficiency (4Ω) 79% @ 200W 81% @ 500W
79% @
1000W
Efficiency (8Ω) 78% @ 100W 78% @ 200W 78% @ 500W
Frequency Response
20Hz--20kHz ± 0.4db ± 0.3db ± 0.4db
Lower Bandwidth
3.5Hz
all loads
3.3Hz
all loads
3.3Hz
all loads
Balanced Input Impedance 60.4kΩ 60.4kΩ 60.4kΩ
Unbalanced Input Impedance 60.4kΩ 60.4kΩ 60.4kΩ
Dynamic Range 110db 115db 118db
Gain 27db 27db 27db
Sensitivity 1.28V 2.1V 2.95V
Output Impedance 10mΩ 5mΩ 5mΩ
Min Load 3Ω 2Ω 2Ω
Damping Factor (100Hz 8Ω) 4000 2000 2000
Max Output Current 11A 35A 40A
*All specs are given as a per channel rating*
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