Any good references for calculation of Speaker & Amplifier current / Voltage / Power matching ?

[diyaudio]

Please address this peak current capacity of 35 amperes in the Harman kardon AVR?

From where 35 Amps came?

 

[diyaudio]

For instance, if you have 8 ohm-89 dB speakers connected to your AVR and you set the listening volume to 25, you'll experience room-filling sound. Conversely, if you switch to 2 ohm speakers, they will require more power to achieve the same volume. This means you would need to raise the volume to 50, which forces the amplifier to provide more power to the speakers, potentially leading to stress on the amplifier, heating issues, clipping, and so on.

Now, let's consider another scenario.

If you are using 8-ohm, 100 dB speakers with your AVR and your listening volume is set to 10, you will still get room-filling audio, but you'll only need half the power to make that speaker louder.

However, if you use a 65W AVR with 100dB speakers, instead of music, you might hear hissing or white noise (which is a topic for another discussion).

With a comparison of different ohms and different sensitivities the OP is only going to be confused, both are independent actually

 

[rwnano]

With a comparison of different ohms and different sensitivities the OP is only going to be confused, both are independent actually

Please do share some good pointers or references on the topic In this thread?

 

[rwnano]

From where 35 Amps came?
View attachment 95791

Please search for "specifications" and then:

Frequency Response
@ 1W (+0dB, –3dB) 10Hz –130kHz
High Instantaneous
Current Capability (HCC) ±35 Amps
Transient Intermodulation
Distortion (TIM) Unmeasurable
Slew Rate 40V/µsec

 

[availlyrics]

Please address this peak current capacity of 35 amperes in the Harman kardon AVR?

Just ignore there tall claims, majority of AVRs can hardly support even a 4 Ohms load. Even there 6/ 8 Ohms support is only partially true for "both ch. driven" and "not all ch. driven" at full power bandwidth. Such high current figures are achievable only in there lab (read- dreams) conditions. Your AVR may go into protection mode during impedance dips of any such low sensitivity, demanding power hungry speakers. Its always safe to stick to there supplied speakers only. Very few companies (like Benchmark ) can support high current , as claimed in specs. Output devices can hardly supply 3 to 4A for a very short duration at there rated operating voltage.

 

[availlyrics]

 

[hifimaddy]

The confusion often arises when people mistakenly connect impedance to loudness, which is incorrect.
A 100 dB speaker requires significantly less power than an 89 dB speaker to achieve the same sound pressure level (SPL).
Impedance is only relevant in terms of whether your amplifier can safely provide the necessary watts. This leads to misunderstandings. In certain configurations, lower impedance can make the amplifier work harder, causing some to think, "It's quieter, so I need to increase the volume." However, the actual limitation is the amplifier's current capacity, not the impedance itself. Therefore, the simplified and accurate conclusion is: Impedance influences the amplifier load, not the loudness of the speaker. Sensitivity determines loudness, not the stress on the amplifier.