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Multi-Way Conventional loudspeakers with crossovers

Which power amplification for different powered speakers ?
Which power amplification for different powered speakers ?
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Old 12th July 2018, 10:52 PM   #21
Galu is online now Galu  Scotland
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Class D is more efficient than class AB.

However, to get 100W from a 25V supply needs a minimum current capability of 4A no matter which class you choose.

Watts = Volts x Amps (W = V x A) is the calculation you need.
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Old 12th July 2018, 11:00 PM   #22
Galu is online now Galu  Scotland
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To put it simply:

Batteries like yours are not suitable for powering high wattage amplifiers.

It's not a matter of battery life, it's a matter of battery capability!
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Old 12th July 2018, 11:18 PM   #23
TanguyClt is offline TanguyClt  France
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Yes I understood that I have to get 24V. I think I will keep the 50W amp but supply it better because if I take a powerfull one I will not be able to make/buy a sufficient battery. If I make 2 pack in parallele of 6x18650 in series, then the current will be 1A instead of 2A for each pack. Is that doable ? Indeed I only have lithium battery so I try to make with that^^.
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Old 13th July 2018, 11:34 AM   #24
Galu is online now Galu  Scotland
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Quote:
Originally Posted by TanguyClt View Post
Yes I understood that I have to get 24V. I think I will keep the 50W amp but supply it better because if I take a powerfull one I will not be able to make/buy a sufficient battery.
That is a very good decision!

Go ahead with your idea of putting two blocks of 6 series cells in parallel.

Please let me know if that combination solves your problem.

P.S. If you have a multimeter, you could monitor the battery voltage to find out how much it falls as you increase the volume of the amplifier.

If the voltage falls a lot then you need a supply with more current capability.

Last edited by Galu; 13th July 2018 at 11:37 AM.
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Old 13th July 2018, 11:48 AM   #25
TanguyClt is offline TanguyClt  France
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Ok I will thanks, but it will not be now because I'm busy
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