Thank you Sir Kelvin. I'm a third year engineering student, and I've treated power amplifiers numerous times along my study journey, but the explanation you've given here sounds so practical and superb, easy to grasp and comprehensible. We're just fond of copying long lectures in school without even knowing how it operates practically 🤦. Thanks again Sir Kelvin.
I wonder why you went in fast forward mode when you talked about the amplifier input sensitivity saying that it only determines the amount of gain. In fact, the most important thing about power amplifiers operation is the fact that they require a specific input signal level, which is amplified by a factor of X times, resulting in a voltage gain of N dB, in order to reach full power output. The specific input signal level, defined by the input sensitivity setting, is the maximum input level allowed at the input stage in order to drive the amplifier to its rated power output, without clipping. This means that 0.775 V RMS (0 dBU), 1 V RMS (+2.21 dBU) and 1.4 V (5.14 dBU) is the maximum voltage level allowed to enter the amplifier input stage. Now, take into account the fact that professional mixing consoles and other professional audio equipments have high headroom fir preserving the dynamic range of music and are capable of maximum output levels of +24 dBU (12.27 V RMS), without clipping, which is 20 dB (11.04 V) over the nominal +4 dBU (1.23 V RMS) level used in professional audio applications. If you want to benefit from the maximum dynamic range of an audio system and ensure proper preservation of vocal and instruments dynamics, you need those 20 dB of headroom over the nominal signal level. But wait, actually, you cannot use those 20 dB more of headroom, because your amplifier maximum input level is 1.4 V (+5 dBU), so you have to limit your mixer master output level to 0 dB (+4 dBU) on the meters, thus loosing 20 dB of dynamic range and forcing your system to work at a lower effective dynamic range than possible. The solution for increasing the effective dynamic range of the entire sound system is to aling all equipments input and output levels so that they all clip at the same time. This will require the use of specific attenuation and boost levels at the input of every device over the entire signal chain and, finally, you will have to use a pad (signal attenuator) at the amplifier inputs.
Thank you Sir Kelvin.
I'm a third year engineering student, and I've treated power amplifiers numerous times along my study journey, but the explanation you've given here sounds so practical and superb, easy to grasp and comprehensible. We're just fond of copying long lectures in school without even knowing how it operates practically 🤦.
Thanks again Sir Kelvin.
Please can you make a tutorial on connecting the amps to a driverack Pa and using a GEQ to eq.
Hi I need your number sir
Plz try and show us steps on connecting mixer to amp. Compressor, equalizer.
Please I want to connect two amplifier one for vocals and subwoofer speakers
pls can you show us how to configure drive rack 260plus
Thanks for the warning Kelvin....hilarious! ;)🤣
Show how to connect mixer. Input pots in yamaha mixer fx24 console. Explain each ports
My sub speakers is not loud please what's d problems
Thank you
Thanks so much sir
You're welcome
Please sir question
1. Can you interlink different power amplifier of different wattage or same??
2. How can I contact you directly??
You can link any two or more power amplifiers irrespective of their power ratings.
Mixer to amp connection. Give us explanations in connection
Hi
I wonder why you went in fast forward mode when you talked about the amplifier input sensitivity saying that it only determines the amount of gain.
In fact, the most important thing about power amplifiers operation is the fact that they require a specific input signal level, which is amplified by a factor of X times, resulting in a voltage gain of N dB, in order to reach full power output.
The specific input signal level, defined by the input sensitivity setting, is the maximum input level allowed at the input stage in order to drive the amplifier to its rated power output, without clipping.
This means that 0.775 V RMS (0 dBU), 1 V RMS (+2.21 dBU) and 1.4 V (5.14 dBU) is the maximum voltage level allowed to enter the amplifier input stage.
Now, take into account the fact that professional mixing consoles and other professional audio equipments have high headroom fir preserving the dynamic range of music and are capable of maximum output levels of +24 dBU (12.27 V RMS), without clipping, which is 20 dB (11.04 V) over the nominal +4 dBU (1.23 V RMS) level used in professional audio applications.
If you want to benefit from the maximum dynamic range of an audio system and ensure proper preservation of vocal and instruments dynamics, you need those 20 dB of headroom over the nominal signal level. But wait, actually, you cannot use those 20 dB more of headroom, because your amplifier maximum input level is 1.4 V (+5 dBU), so you have to limit your mixer master output level to 0 dB (+4 dBU) on the meters, thus loosing 20 dB of dynamic range and forcing your system to work at a lower effective dynamic range than possible.
The solution for increasing the effective dynamic range of the entire sound system is to aling all equipments input and output levels so that they all clip at the same time. This will require the use of specific attenuation and boost levels at the input of every device over the entire signal chain and, finally, you will have to use a pad (signal attenuator) at the amplifier inputs.