電流的大小
本帖最後由 leo820 於 2013-3-21 21:53 編輯各位師兄, 請問擴音機的 specs 從邊項可睇到電流的大小呢?
幾多才算大電流呢？
Inputs
1 pr. balanced via XLR connectors
3 pr. single-ended via RCA connectors
1 dedicated iPod input via 30-pin connector
Outputs
1 pr. preamp outputs via RCA connectors
1 pr. speaker outputs via gold-plated binding posts
Control inputs
1 RS-232 input via 9-pin D-subminiature connector
1 remote IR detector input via 3-conductor 3.5 mm connector
1 12 VDC trigger input via 2-conductor 3.5 mm connector
Control output
1 programmable 12 VDC trigger output (30 mA maximum current) via 2-conductor 3.5 mm connector
Input impedance
Balanced: 95 kΩ
Single-ended: 47.5 kΩ
Frequency response
20 Hz to 20 kHz +0, -0.14 dB
<2 Hz to 110 kHz +0, -3 dB
Signal-to-noise ratio
>84 dB, wideband, unweighted, at maximum gain, referred to full power output
>93 dB, "A"-weighted
Gain
32.5 dB
Input sensitivity
Single-ended or balanced: 800 mV RMS
Total harmonic distortion
<0.035% at 1 kHz, at 150 W, 8 Ω load
<0.26% at 20 kHz, at 150 W, 8 Ω load
Output power
150 W RMS per channel at 8 Ω
300 W RMS per channel at 4 Ω
Output voltage
99 V peak to peak
35 V RMS
Output current
15 A peak
Slew rate
50 V/S
Output impedance
<0.080 Ω at 20 Hz
<0.11 Ω, 20 Hz to 20 kHz
Damping factor
>100 at 20 Hz, referred to 8 Ω
>75, 20 Hz to 20 kHz, referred to 8 Ω
Power consumption
Standby: 40 W
Idle: 60 W
Maximum: 1000 W
Heat output
Standby: 140 BTU/hr
Idle: 210 BTU/hr
Maximum: 1600 BTU/hr
Specifications for preamp only:
Gain
6.3 dB (single-ended)
Volume control
Current-mode, 12-bit, discrete R-2R ladder
Input overload
Balanced: 12 V RMS
Single-ended: 6 V RMS
Output overload
8 V RMS (single-ended)
Frequency response
20 Hz to 20 kHz +0, -0.05 dB
<2 Hz to 1.0 MHz +0, -3 dB
Total harmonic distortion
<0.009%, 20 Hz to 20 kHz, at 2 V RMS
Signal-to-noise ratio
>85 dB, wideband, unweighted, at maximum gain, referred to 2 V RMS
>94 dB, "A"-weighted
Dimensions
17.26 in W x 4.09 in H x 17.70 in D
438 mm W x 104 mm H x 450 mm D
Weight
Unit only: 42 lb
As shipped: 51 lb
本帖最後由 Einstein 於 2013-3-22 17:16 編輯
電流的大小呢?<<< 成部機的電路都有電流經過, 你列到好多Part, 唔同地方就唔同的電流流動, ...? 唔知你係唔係指整體部機 ie: Power(watt) = Volt x Amp 多謝師兄回覆, 其實我的喇叭比較大食 86 dB 4 ohm 所以想找一部電流輸出較大的合拼機, 這様的話上述的 specs 所講 Output current 15A peak 是否就是這項呢? 而是的話15A 是大還是一般呢? 係 {:8_376:},
如果淨睇spec的這part的話, 都算好強横 {:6_193:}
Output power
150 W RMS per channel at 8 Ω
300 W RMS per channel at 4 Ω 電流量的話, 15A 又只是算普通 睇w數啦，再睇damping factor leo820 發表於 2013-3-22 21:48 static/image/common/back.gif
多謝師兄回覆, 其實我的喇叭比較大食 86 dB 4 ohm 所以想找一部電流輸出較大的合拼機, 這様的話上述的 spec ...
I got it.....係要大Power amp 本帖最後由 leo820 於 2013-3-23 17:11 編輯
多謝各師兄回覆！咁如這個specs 對86 db 4 ohm 喇叭夠做嗎？ leo820 發表於 2013-3-23 17:06 static/image/common/back.gif
多謝各師兄回覆！咁如這個specs 對86 db 4 ohm 喇叭夠做嗎？
我覺得好夠
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