its ages since i bought a hi fi and was always annoyed at the seemingly unnecesary confusion over how powerful a system was compared to something else.
surely all that matters is how loud something is..[not how many watts or ohms are involved] and it must be a simple scientific measurement to give any hi-fi an scientifically acurate maximum volume rating so customers can make a decision based on fact.
of course im discussing volume as the issue i'm annoyed about---obviously volume is not the be all and end all when it comes to choosing a hi fi....but i would just like the simple facts..is all!
2007-07-09 00:47:04 · 3 answers · asked by Anonymous in Consumer Electronics ➔ Other - Electronics
Yes, it is simple. In theory...
'X' watts from an amplifier, using 'Y' cable to 'Z' speakers will produce 'N' decibels of sound.
But what if you have 'Y' amplifier, 'Z' cable and 'X' speakers? Or even 'B' amplifier, 'C' cable and 'D' speakers Then the actual volume WILL be different.
In fact, it will always be different, depending on what combination of amplifier, cable and speakers you are using. Although the theory is simple, in practise it is impossible to determine a specific output volume, because every pair of speakers 'sees' the input from an amplifier differently, depending on the amp itself and the cable used.
2007-07-09 07:05:48 · answer #1 · answered by Nightworks 7 · 1⤊ 0⤋
Well the closest thing to what you are asking
is the system used to rate efficiency of speakers
when connected to amplifier
its decibels/watt
basically tells how loud the sound will be at 1 watt of power
the power of a amplifier doesnt really mean as much as
the efficiency of the speakers connected to it
Paul Klipsch got rich with his speakers
the earphone jack of a AM transistor radio
would produce over 105 decibels at 1/4 watt
most speakers are good for 89-93 decibels at 1 watt
2007-07-09 00:53:14 · answer #2 · answered by Anonymous · 1⤊ 0⤋
A speker with an efficiency of 90db/watt will produce adequate domestic levels with an amplifier of 25watts per channel.
Most good manufacturers quote output in watts RMS (Root Mean Square) although some of the cowboys use figures off the wall. (1000 watts per channel form a portable radio!).
Stick to RMS for comparison purposes, and remember that an increase of 3db is 100% in "volume", so a speaker rated at 93db/w is twice as loud as one rated at 90db/w.
2007-07-09 09:51:00 · answer #3 · answered by Do not trust low score answerers 7 · 0⤊ 0⤋