by 3 hours ago
ANSWERS: 2
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The Amp should be rated at or near the speaker rating. DO NOT exceed the speaker rating. If a speaker is rated at 50 Watts, do not connect it to...say... a 100 watt amp. but, also, do not connect it to an amp rated at 10 watts. this amp may have a hard time driving it. Other considerations. 1. Speakers come in different Impedence ratings. Some amps can handle both 4 and 8 ohm speakers, others cna only use the one they're rated for. Be careful because hooking up the wrong speakers can blow the amp, 2. Car speakers should not be hooked to home stereos. they are not built to withstand surges that can occur in home amps. 3. peak, RMS and Peak-to-peak are different ways to measure power. Good speakers and amps are rated using RMS. cheap speakers and amps are sometimes rated at peak-to-peak [P-P] this amkes the numbers higher [and it's cheating ] 100 watts P-P is only 35 watts RMS. This cheat can get you in trouble so watch for it. Brand names usually use RMS or Peak. 4. 70volt systems used in PA should not be hooked to 8 or 4 ohm amps without a transformer.
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You also need to look at the sensitivity of the speakers in question. For example a pair of fostex drivers may be rated at 90dB. That means that the driver can put out 90dBSPL at 1m using 1W of power.
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