TFM-42/45 Mono Mode: WTF?

So....finally got around to trying these amps in mono mode on my 8 ohm speakers. Looked in the Owner's Manual and (I assume I'm not the 1st to notice this?): the TEXT says to connect the (+) speaker wire to the red RIGHT speaker binding post and the (-) speaker wire to the red LEFT speaker binding post. However, the diagram on the very next page has these wires shown hooked up exactly opposite to this: red left channel to speaker (+) terminal and red right channel to speaker (-) terminal! So which is it? With all the warnings, I don't want to chance hooking these up backwards, even though I doubt it would do any damage to the amp...

Since no one seems to know, I guess I'll try how the text says and assume that the diagram is wrong....even tho I did do a search here and it said that for the TFM-55, that you wire them the way that the diagram shows...

Ed, I don't know but I'd go with the diagram first.

Yiu know what they say....One picture is worth a thousand words.

Just sayin'.

Ed, I just reread your first post. Basically both the text & the diagram show using both red (+) terminal to bridge the amp.


It doesn't matter which speaker lead ( + or -) goes on which amp post as long as both speakers are wired the same.

"It doesn't matter which speaker lead ( + or -) goes on which amp post as long as both speakers are wired the same."

Yes, that's basically how I feel about it. However, if it does not matter, why would they not just say that (instead of clearly stating to connect the (+) speaker wire to the red RIGHT speaker binding post and the (-) speaker wire to the red LEFT speaker binding post). I did this (+ to red right terminal and - to red left terminal) even though the diagram has it shown the opposite way (I disagree with your logic: easier to draw it wrong then state it wrong...and if stated wrong (and harmful) someone would have corrected this error a long time ago...).

Anyway, the sound is not demonstrably any better (so far) than with just the single TFM-42 (or 45) amp and probably not as good as with the m1.0t mkII opt2...but I will listen for a while before finalizing but pretty sure I won't leave it in this mono bridged mode...basically don't need the extra power/loudness and the sound is not "wow! that's so much better"...Thanks, Frankie! - Ed