LM1875 & phase angle, is it enough?

[Shike]

Greetings everyone,

I have a question about phase angle of speakers in impedance measurements and specifically, how does it impact the load on amplifiers? I currently have a LM1875 gainclone, and want to know generally how angle determines whether the load will be too hard for it or not. For example, 5.5ohms at a -45 degree phase. 😕

tldr: The speakers have an 85dB @ 1w/1m sensitivity, and I listen from 2m away. How loud can I go before the amp clips, and does phase impact whether it clips earlier? If so how do I figure this.

Thanks.

 

[AndrewT]

read ESP on this topic.
There are other Websites that look at reactive speaker loadings and the effect it has on the amplifier.

This is not a minor problem. It is complex and serious. It can blow up amplifiers.
It will activate the Spike protection in a 3886. What protection/limiting is built into the 1875?
It can ruin the sound quality if you try to play inappropriate sound levels from an amp that is severely current limiteHow loud can I go before the amp clips, and does phase impact whether it clips earlier? If so how do I figure this.d by design.

How loud can I go before the amp clips, and does phase impact whether it clips earlier? If so how do I figure this.

when it starts to sound horrible as you turn up the volume, then turn it back down again.