difference of watts

[quadklipsh]

hi all....
This is perhaps my first post to this section of AK .
My question is pretty simple , why my amp is rated at 80 watts /ch , while its identical twin amp (with the same anatomy inside as well as outside ) is a whopping 160 watts /channel.
The brand is sansui ....
And the amps are both 907 alpha series ...
Mine is 80 watter 907 i MOS Limited..and the other one is the 907 L Extra ....

What bothers me is , the amount i paid to get this amp (imos limited which is just 80 watts ) was it not better if i had bought the 160 watt amp(L Extra ) for a bit less cash than this ???

Do watts matter at this level ?
Whats the catch here,in the company's price differences 260000yens for imos vs 250000yens for L Extra ?

By the way i have fallen in love with this amplifier .... Sounds great !!!!
And i run it on Klipsch Rf3s ....

Plz unleash your thoughts

 

[petehall347]

either its a marketing thing or they raised the rail voltage or something ..

 

[UncleAng]

From a perceived sound perspective there's little difference between 80 watts vs. 160 given the exact same periferals attached to the amp. Yeah it's twice as much wattage but it's only 3db more in volume and one needs 10db increase to perceive double the volume which in your case turns out to be around 750 watts. Feel better?

 

[JoeESP9]

Check the site below. There were three 907 models made. It has pictures of the outside and inside of all three models. They are not the same externally or internally.

http://audio-database.com/index.html

 

[sKiZo]

From a perceived sound perspective there's little difference between 80 watts vs. 160 given the exact same periferals attached to the amp. Yeah it's twice as much wattage but it's only 3db more in volume and one needs 10db increase to perceive double the volume which in your case turns out to be around 750 watts. Feel better?

Volume is only part of the equation. Control is arguably more important, and there, the more watts the better. It takes a lot less power to start a cone to woofing than it does to stop it at that exact moment in time where it achieves perfection.

Still sounds kinda strange though, unless it's one of those 2x things where the A and B speaker amps are bridged. Then again, twere that the case, you'd think they'd stick with one version and set it up with a switch so you could use either the low or high side depending on your mood and material. That's the way my Sansui x001 series receivers work.

 

[Jon_Logan]

Volume is only part of the equation. Control is arguably more important, and there, the more watts the better. It takes a lot less power to start a cone to woofing than it does to stop it at that exact moment in time where it achieves perfection.

I think you're confusing output power and output impedance. The output power is more influenced by rail voltage values, while output impedance is more influenced by number of output transistors, emitter resistor values, and the amount of negative feedback.

You can build a 400W amp with a damping factor of 20 and you can build a 3W amplifier with a damping factor >1000.