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Higher powered speakers with lower powered amp or Low powered speakers with higher power amp? Answered

There is a lot of conflicting information on this and I would like to know if my speakers/amp would get damaged.

Using 80w speakers and a 50w amp will there be any problems with running on full volume? And if I got a 100w amp with those 80w speakers will there be damage, even if I added a heat sink to the back where the voice coil is?

The speakers say 80w max but not really reliable as they are well priced Chinese speakers.

Audio Sensitivity: 88dB
Frequency Range (Hz): 100-20Khz
4 Ohm

Efficiency: 90%
Rated output power: 2*50W+100W
Working voltage: DC18V to DC24V
The maximum output current: 4A
Frequency Response: 20Hz-20KHz
Can drive a 3-16 ohm speakers In the condition of rated voltage 24V
The sub woofer channel at rated voltage 24V state can drive 2-16 ohm sub woofer
Bass cut-off frequency independent regulation 20HZ-20KHZ adjustable

Very confusing conflicting info online with under rated amps causing clipping and over powered amps frying the speakers. Originally I thought it was only bad to over power the speakers.

Any help about what is worse, is appreciated.


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4 years ago

1. Your speaker need to be able to handle the power output of your amplifier, ideally they should exceed it as wattage ratings are always optimistic.

You will see 2 types of rating - Music power and RMS (Root Mean Squared)


"Sort of" Instantaneous power reading and continuous power reading.

Putting a heat sink on a speaker is a waste of time, the overload distortion will come from physical limitations in the speaker system not electrical.

2. Your amp shouldn't be run flat out! It is never a good idea and unless it has been designed to do so it will distort the input sound. usually this distortion is in the form of clipping the input signal. This isn't anything to do with the speakers. Guitar FUZZ is an extreme form of clipping deliberately introduced.

3. Your Amplifier output should be designed to drive the impedance of the speakers. This should be stated on the Amp spec and on the speakers. generally for a range of impedance covered by the amp the maximum transfer of power will be into the lower end of the range.

4. The speaker enclosure possibly has more to do with effecting the sound and fidelity than anything else. Few speaker enclosures are properly designed, being pieces of furniture rather than hi fi speakers. This is why Bose and similar top end manufacturers charge so much for their fancy designs.

5. The quality of the output depends much on :- Your ears, The quality of the input source and the "type of sounds" - if your listening to modern "music" then little your going to do will improve it!!!!

Sorry just an age thing :-()