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Infinity’s and power

petes'picks said:
..30wpc solid state should be plenty just be careful not to clip amp and fry the emits.
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30 W is only enough if you like to listen at low volumes or have high sensitivity speakers. Or the 30 W amp is of high current design which your example seems to be.
Anyway, why be afraid of clipping if you can make peace of mind by buying a plenty powerful amp.
 
If you listen loudly I would suggest a different pair of speakers. Qe are great for moderate levels, were never designed to fill a large room to loud levels and there are thousands of those blown emit tweeters to prove it.
 
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I'm talking about the 70's and early 80's. You wouldn't believe the strident sound that the receivers had.
 
hopeless said:
I was a a Yamaha rep for 15 years. K

I spoke directly to the engineers. The engineers did not make the presentation.

Actually, I would say that you are missing the point. You keep going back to a static resistive load as your baseline. This is all about how an amplifier reacts to a speaker load in dynamic use. The more dynamic the speaker load, the more it's going to act like an equalizer. The poorer the amplifier design or build, the more the amplifier is affected. This is why some amp and speaker combos don't work especially well while others do. Also why cheaper amplifiers don't often work well with higher end speakers. Designers are expecting a better amplifier is going to be used.

You ask the wrong questions, and expect the specs to lead to the answers. They just don't, they are contextual, meaning different things in different situations.
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Yamaha had always had a high dynamic power design with soft power supply. This could lead to the amplifier running out of juice with certain music, volume and speakers in the lower octaves. -Sounding "thin". But then again; you're using it wrong and outside its power envelope where all amplifiers will have non-linearities.

But there is no special circuit sensing the complex loads and applying EQ accordingly to achieve any kind of special sound. That is pure marketing. How would the amplifier exhibit the same "thin" Yamaha Sound across multiple speakers as one could have 10 Ohm at 5 kHz and another 25 Ohm? On one it would sound more dull than with the other load but we are yet to believe that the "Yamaha Sound" is always thin with all loads. :)

We are in pure myth territory and it has yet to be proven true by anyone.

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Yamaha A-S3200 integrated amplifier Measurements | Stereophile.com

Sidebar 3: Measurements I tested the Yamaha A-S3200 with my Audio Precision SYS2722 system (see the January 2008 "As We See It"). I first preconditioned the amplifier by following the CEA's recommendation of operating it at one-eighth the specified power into 8 ohms for 30 minutes. At the end of...
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I ran a pair of Qa for years with a lepai 15 wpc amp. it did just fine at background to medium db listening levels.

I've driven my current Qe and RSb's with a fosi bt 20 amp with no problems at all.
IMO, there's no real reason to use old low watt amplifiers when fantastic chip amps are available for less then 100$

Agree, they are NOT arena filling speakers, but they should sound just fine in a small to medium room.

I have never blown an emit, either original, half line source, or R, with one exception of a pair of cs 3007s that upon very first time powering them up, one emit immediately sparked, and magic smoke escaped.

Emits are pretty robust. Indestructible? no,
 
jazzmans said:
I ran a pair of Qa for years with a lepai 15 wpc amp. it did just fine at background to medium db listening levels.

I've driven my current Qe and RSb's with a fosi bt 20 amp with no problems at all.
IMO, there's no real reason to use old low watt amplifiers when fantastic chip amps are available for less then 100$

Agree, they are NOT arena filling speakers, but they should sound just fine in a small to medium room.

I have never blown an emit, either original, half line source, or R, with one exception of a pair of cs 3007s that upon very first time powering them up, one emit immediately sparked, and magic smoke escaped.

Emits are pretty robust. Indestructible? no,
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Having had quite a few Infinity speakers myself, I find the Emit drivers quite robust. Actually more so than voicecoil / dome drivers. The mylar film breaking up or the photo-etching cracking is what kills them. Emit-R's are bastards as I have yet to find proper repair kits for them.
 
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