Again the topic of weight of amps

clearthink: "Class d is ok for subwoofer amplifiers at least until you compare them to something better such as Bryston or Pass."

jsautter: "I agree with clearthink on the issue of Class D amps. Havent heard one yet that I have liked."

Hello clearthink and jsautter,

It’s funny how outdated you both sound. There’s been very good class D amps on the market for at least the last 5 years, maybe longer, such as Bel Canto, Merrill Audio, D-Sonic, Red Dragon, Wyred 4 Sound, Channel Islands, any of the DIY amp kits using the Hypex NCore power modules and others I’m probably forgetting. You both obviously just lack the experience of listening to a good class D amp. After all, you don’t know what you don’t know, right?
It’s just a shame that, with no experience listening to good class D amps, you’re both willing to spread outdated and no longer accurate information. It is true that they all generally have exceptionally good bass response, when compared to the other traditional amp types, since they typically have very high damping factors.
What you both apparently don’t realize however, is that good class D amps generally share other qualities such as very low distortion and background noise levels which results in very high levels of detail, very high power and dynamic range capacity, very neutral sonic presentations with nothing added or subtracted from the inputted signals as well as midrange and treble responses that are detailed, accurate and natural without being harsh or bright.
The above is an accurate description of what I’ve experienced owning and listening to good class D amps both in my own system and many others I’ve listened to. Hopefully, both of you will be able to listen to a good class D amp soon to update and broaden your knowledge and experience.
Oh yeah, I just realized I almost forgot to mention all the other non-sound quality benefits of class D amps, which are relative affordability, small size, low weight, high electrical efficiency, low electricity consumption and low operating temps.

Tim

Tim deParavicini of EAR-Yoshino says he can predict the bass sound an amplifier produces by looking at the size of it’s transformers. Transformer design is an art, requiring a compromise between various considerations. Too small and the bass suffers, too big and the highs do. Capacitance, inductance, etc., have to be balanced against each other.

Tim deParavicini of EAR-Yoshino says he can predict the bass sound an amplifier produces by looking at the size of it’s transformers.

That’s a bit of a furphy, there’s much more to it than just that, he not giving the whole story.

Feedback, output impedance, current ability, and damping factor, are parameters that effect bass and it’s control.

Cheers George

@geoffkait 

It’s no secret that big honking transformers produce toxic magnetic fields that distort the sound and that transformers produce mechanical vibration that affects everything in the chassis, especially given that transformers are bolted down to the chassis.

I believe I have heard of amplifiers that have a separate case for the transformer but I cannot think of a specific example right now.

noble100"It’s funny how outdated you both sound...You both obviously just lack the experience of listening to a good class D amp...with no experience listening to good class D amps, you’re both willing to spread outdated and no longer accurate information...Hopefully, both of you will be able to listen to a good class D amp soon"

What is funny is how you are convinced you know what I have listened to when in fact you have no idea what I have listened to and simply can not believe that what you like is not what others like and that many people think Class D has a long way to go before it can equal the consistent, reliable, superior performance of most conventional designs and I base that observation and conclusion upon listening to a variety of Class D amplifiers.