電流的大小

leo820

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 [19.0 kg]
As shipped: 51 lb [23.1 kg]

Einstein

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, ...?

Einstein

唔知你係唔係指整體部機 ie: Power(watt) = Volt x Amp

leo820

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?

billylwc

係 ,
如果淨睇spec的這part的話, 都算好強横
Output power
150 W RMS per channel at 8 Ω
300 W RMS per channel at 4 Ω

billylwc

電流量的話, 15A 又只是算普通

tomtomsuccess

睇w數啦，再睇damping factor

Einstein

leo820 發表於 2013-3-22 21:48
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

leo820

多謝各師兄回覆！咁如這個specs 對86 db 4 ohm 喇叭夠做嗎？

popo388

leo820 發表於 2013-3-23 17:06
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