My memory is shot- lucky I find my way home everyday.
But- my newest (noobie) ? is:Why should I care if my speakers are 4 or 8ohm?
I have the 950/770 -alas not hooked up yet.
And in line for the M&K 150's for 7.1
Answer has to be 15 words or less- my mind(whats left) tends to wander.
As an aside: I am building a dedicated HT in a new house and am overwhelmed at all the info I'm amassing in regards to equipment.

15 words or less: with the 770, you really don't.

With an amp like the 770, the only reason that you really care is that the power output at 4 ohm is a bit greater (which might make a difference if you had really low efficiency 4 ohm speakers and needed the 300 watts produced by the 770 with a 4 ohm load). With many receivers, however, the built-in amplification may not be able to support a 4 ohm or lower load. Dedicated power amps generally are more robust designs that can handle it.

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gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review

Thanks gonk- but to be more precise- I was wondering what the diff. is between having 4 or 8ohm speakers, not so much power consumption.Also- why produce 4ohm speakers- more efficient???
Do they draw more power to run???
anyone,anyone(Ferris Buehler)

15 words or less? The guts inside the 4ohm speakers offer more resistance than the 8ohm speakers. Nothing to do with quality, just electrical resistance. (I went over 15 words).

4 ohms is less resistance than 8 ohms, not more. It is a harder load to drive however, and draws more current from a constant voltage source.

The impedance of a speaker is a design consideration that doesn't really have much to do with the way it sounds.

Hey, I was in a hurry to get to work and was under pressure to get it said in 15 words or less. It is true, E=IR; so 4 ohms is less than 8. I hate it when I screw up like this. However, it still stands true that the ohms rating by a speaker manufacturer has nothing to do with its sound quality.

I was just busting your chops. I know how it feels to screw up, I did it once in 1975.

I never make misteaks.

Jeff Mackwood

Since 1975! That means I can go for 29 more years without the fear of anymore mistakes. That's great news!!!

Well, generally, 4 Ohm speakers present more of a load to an Amplifier and it tends to output higher wattage...
Sorry, 20 words,,,,