How do I match the 4 to 8 0hm output impedance of the Kemo amplifier to the input impedance of 8 piezo speakers connected in parallel?

The Kemo L010 speaker appears as a 140nF +/- 30% capacitor according to an email I got from Kemo when I was trying to answer the same question as you are asking. I assumed the 4 or 8 ohm specification is reactance so I picked the frequency and calculated the reactance of the speaker and then found the series parallel combination to give me the overall load reactance.

Can this module be hooked up to the ultrasound generator module sold by the Kemo? That is, what is the input frequency range for this product?

I have it hooked to the Kemo generator, works fine. The input seems to be 20-25k hz.

What is the khz rang of the kemp m034n 40 watt universal mono amplifire?

The "spec" on this amplifier is 20-25KHz but there is still ample gain all the way to 60KHz.

Can i connect one 75 watts 8ohm piezo horn speaker to the output with m048n as input?

There should be no problem to hook up a 8 ohm 75 watt to a piezo speaker. Tip put a 8 ohm Res

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Kemo M034N 40 Watt Universal Mono Amplifier Module

Product ID: 27973909

Details

Item dimensions L x W x H
2.72 x 1.38 x
Voltage
12 Volts 16 9
Manufacturer
Kemo
Minimum Supply Voltage
12 Volts
Mounting Type
Surface Mount

🔊40W Power Output

🔧Built-in Protection

🛡️Sealed for Durability

C$413

Duties & taxes included

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Details

Item dimensions L x W x H
2.72 x 1.38 x
Voltage
12 Volts 16 9
Manufacturer
Kemo

Description

🎶 Amplify Your Sound, Elevate Your Experience!

SAFETY FIRST - Integrated speaker protection keeps your audio gear safe.
BUILT TO LAST - Sealed construction ensures reliability in harsh environments.
UNLEASH THE POWER - Experience 40 watts of high-performance audio amplification.
COMPACT EFFICIENT - Space-saving module without compromising on sound quality.
VERSATILE COMPATIBILITY - Universal design fits a variety of applications.

The Kemo M034N 40 Watt Universal Mono Amplifier Module is a robust, self-contained audio solution designed for high-performance applications. With its sealed construction, it thrives in challenging environments while providing built-in speaker protection for peace of mind.

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