vivienna

未必會燒架播﹐你要留意究竟你係睇緊 RMS(root mean square) Power 定係Maximum Power 先﹖

D廠商好多時賣廣告都賣 maximum power, 但實況長期輸出既 power 都係響 RMS 個 power rating 度數﹐通常 RMS 高D音質就會清D少D雜聲(但非必然)﹐maximum power其實係廢料﹐主要係誤導D音響初哥。你仲要留意究竟個 AMP power output 係 based on 4 ohms 定 8 ohms 先﹐亦要留意究竟個喇叭係 4 ohms 定 8 ohms.

答番你個問題﹐一般黎講﹐揀AMP最好揀一個 power output (rms) 同 speaker handling power (rms) 相近﹐就算多少幾十watt都無咩緊要﹐但係amp既 power output (rms) 一定唔可以多過speaker 既 maximum handling power﹐如果唔係就實燒。

If you can't find out the exact data that you need from both the speakers and the amp, you can automatically assume the following (but it's not accurate, it's just assumption):

amp
rms power output = 1/3 maximum power output

speaker
rms rated power = 1/2 maximum power handling

I hope this helps you. If you are still not sure, go to an audio store in Sham Shui Po and ask. It's better to listen from the Pros.

vivienna

Originally posted by hkcitywong at 2005-6-24 03:22 PM:
唔該兩個大佬，ｒｍｓ同ｍａｘ　ｐｏｗｅｒ係咩黎，我見到有ｄ　ｓｐｅａｋｅｒ寫１０％＋－　是什麼意思？

係咪寫住THD呀﹖尼個解 total hormonic distortion﹐越高就越‘穩笨’﹐厄人多。而家要出去﹐遲D同你再傾。總知記住﹐唔好立亂買﹐徙錢不止﹐仲要隻耳受罪。

vivienna

Originally posted by d228216 at 2005-6-24 03:02 PM:
1. 抵玩型: amp 係 speaker 的 4倍 (AB類, 普通amp, 失真率由細声時小於1% 至 最大30%)
2. 力量型: amp 係 speaker 的 2倍 (A類, 高級amp,開到盡而失真率低於1%)
3. 痴線型: amp 係 speaker 的 6倍或以上 (純A類, 痴線amp, 失真率低於0.1%)

如果玩開汽車音響既話﹐仲有個 class D amp﹐尼個係負責低音擴音﹐高流量 high current amp﹐主要係好有效甘擴音而唔容易過熱。