What makes a home sterio loud? The speakers or the main console?
by 
themisterF
ANSWERS: 2
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Anny stereo system is only as good as it's weakest part. You can have a great stereo,fantastic amplifier, but if the speakers are 10watt RMS then you have a problem. Likewise you can have the greatest speakers around, but a naff stereo system will limit your volume. The answer buy quality and look on the RMS (Root Mean Square) not PMPO or that.
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A very relevant number for the achievable sound level is the speaker sensitivity. This is given in "dB (1W/1m)" which means sound pressure level in one meter with a 1Watt source. dB is a logarithmic scale, which confuses matters, but basically 3dB more means double as loud, 6dB four times, 10dB ten times as loud. As a consequence, a 200W RMS speaker with 85dB sensitivity is inferior to a 50W RMS/95dB speaker. Let's see: Speaker #1: 1 W/85dB means 10W/95dB, 100W/105dB and finally 200W/108dB Speaker #2: 1W/95dB means 10W 105db, 50W/112dB So with a 50W amp the more sensitive speakers are still louder than the less sensitive with a 200W amp. With the same amp (50W) the difference would be a factor of ten! So if you want to go really loud, you better start with sensitive speakers (professional PA gear ususally is better than 100dB/Wm)
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