Mcintosh 452 vs Pass Labs XA 30.5

“On these fairly easy to drive speakers, both will work fine...”

Totem Mani2 speakers are actually not an easy load

I beg to differ, you quoted me.
They are an easy load for an amp, just not efficient so you need watts. 

Not looking for an argument but whatever wording you want to choose your advice was not appropriate.

But you are, then don't quote me and then try to "cover" your inability to distinguish "bad load for a speaker" with "inefficiency of a speaker".
A speaker with bad load impedance for an amp, with one that's just "inefficient", which in this case the Mani2's are, just inefficient and NOT a difficult impedance "load" for an amp.

mizioa

The  30watt Pass to me will sound the best to a given volume level, but the 450w Mac will go louder. This volume level has nothing to do with the "load" the speakers presents, but the "efficiency", to which will give the higher volume level. As far as me saying the Pass will sound better to a given volume, that's because it's a Pass, and the Mac? well is a Mac, (a solid state with output transformers?????) bizarre!


Cheers George   
     

@missioncoonery not doubting you. I haven’t had any issues with any of the 3 McIntosh units I have, but if I do I will let my dealer handle it. Hopefully I won’t get yanked.
ARC has really good customer service too, and you’re probably going to need it because it will blow up expensively

"But you are, then don't quote me and then try to "cover" your inability to distinguish "bad load for a speaker" with "inefficiency of a speaker"."

I give up. You wore me out. Go read Atkinson's measurements. I'm done with your BS.

Efficiency and impedance loading are two different measurement parameters in a speaker, end of story, your the one with the BS, with the inability to distinguish between the two, to mate amps up with.

For those that are interested:
An inefficient speaker like these Totems with low (80db) and fairly easy impedance load, can still be driven by a mediocre amp with less than average current drive, so long as it has high enough wattage for that inefficiency, to be played loud.

But if that same speaker also had a nasty impedance load as well, then it still needs an amp with the wattage to go loud, but would also need that amp to have good current drive as well to handle the nasty impedance load as well to stay linear in frequency response at those low impedance dips. If not it would sound like a tone control at those impedance dips.

Cheers George

When you want to experience music at the highest level possible you need a system what can reveal all the details and properties of the recording. This has nothing to do with personal taste. We are talking about facts.

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