John:son-in-law laid claim to it the moment he saw it on the bench.
I see that, once again, you are nibbling around the edges of the "Brute Force Amp" concept. I kinda-sorta figured you would get there eventually. And, coincidentally, you missed out on a Harman-Kardon Citation 19 that I tripped over at a yard sale - my
But, getting to your question directly: If you choose to move to Class D amplification do go for the most recent designs and do pay attention to how the signal is filtered to the speakers. Put as simply as possible: "Good Audio Quality" class D wasonly a concept as recently as 4 years ago. Today, distortions (all components) of less than 0.05% are routine. A few years ago, damping in Class D was very nearly non-existent. Today, it is approximately that of a 30-50 watt tube amp. Low, but definitely
A few things:can afford and work from there (The 686 in Neurochrome, or any of several other brands:
a) Class D amps do not like being run at/near rated output for long periods. They do not 'blow up' but they do get quite warm.
b) Based on the nature of sound and the decibel scale, if you are going to go to Class D, go BIG - Given that the next step after a 20 watt amp is a 200 watt amp, start there. Really. Do not try to gang them up, start with the highest power module you
https://www.parts-express.com/icepower-500a-class-d-audio-amplifier-module-1-x-500w--326-200initially vs. something for sound reinforcement.
https://www.diyclassd.com/diy-amplifier-modules/
https://www.dhgate.com/wholesale/class+d+amplifiers+module.html
As you can see, prices are all over the place and largely depend on how user-friendly and/or complete the various parts will be on arrival. But the overall audio quality will be largely indistinguishable **!IF!** you purchase an audio-purposed module
My 'audio-snob' neighbor down the block built a Class D amp recently in a COVID-related fit of boredom to compare to his 300B-based flea-powered SET tube amp - he used the 150-watt mono modules, with separate power-supplies. I am not sure he is goingback to tubes.
Repeat: GO BIG, or not at all - no need for extremes (1,100 watts, for example), but getting those transients is worth something.
Peter Wieck
Melrose Park, PA
On Thursday, July 16, 2020 at 10:52:37 PM UTC+1, Peter Wieck wrote:my son-in-law laid claim to it the moment he saw it on the bench.
John:
I see that, once again, you are nibbling around the edges of the "Brute Force Amp" concept. I kinda-sorta figured you would get there eventually. And, coincidentally, you missed out on a Harman-Kardon Citation 19 that I tripped over at a yard sale -
only a concept as recently as 4 years ago. Today, distortions (all components) of less than 0.05% are routine. A few years ago, damping in Class D was very nearly non-existent. Today, it is approximately that of a 30-50 watt tube amp. Low, but definitely
But, getting to your question directly: If you choose to move to Class D amplification do go for the most recent designs and do pay attention to how the signal is filtered to the speakers. Put as simply as possible: "Good Audio Quality" class D was
you can afford and work from there (The 686 in Neurochrome, or any of several other brands:
A few things:
a) Class D amps do not like being run at/near rated output for long periods. They do not 'blow up' but they do get quite warm.
b) Based on the nature of sound and the decibel scale, if you are going to go to Class D, go BIG - Given that the next step after a 20 watt amp is a 200 watt amp, start there. Really. Do not try to gang them up, start with the highest power module
initially vs. something for sound reinforcement.
https://www.parts-express.com/icepower-500a-class-d-audio-amplifier-module-1-x-500w--326-200
https://www.diyclassd.com/diy-amplifier-modules/
https://www.dhgate.com/wholesale/class+d+amplifiers+module.html
As you can see, prices are all over the place and largely depend on how user-friendly and/or complete the various parts will be on arrival. But the overall audio quality will be largely indistinguishable **!IF!** you purchase an audio-purposed module
back to tubes.
My 'audio-snob' neighbor down the block built a Class D amp recently in a COVID-related fit of boredom to compare to his 300B-based flea-powered SET tube amp - he used the 150-watt mono modules, with separate power-supplies. I am not sure he is going
Repeat: GO BIG, or not at all - no need for extremes (1,100 watts, for example), but getting those transients is worth something.
Peter Wieck
Melrose Park, PA
That's really helpful Peter, thanks.
How serviceable are these amps. I mean, in 10 years, and Neurochrome no longer exists, and my expensive amp has a fault, is it going to be impossible to service because the parts (the chips?) are no longer available?
John:possibly our children's children. The best analogy I can think of without much thought is that a Class D module is very much like a well-made Klein or Estwing hammer. Unless you abuse it, it will last forever. It will also tolerate a limited amount of
Serviceable - that is a heavily loaded question. Effectively, these modules are not serviceable in any conventional definition of the term. They are uncomplicated devices that if used within their design parameters should outlast all of us, and
https://www.amazon.com/Electricians-Straight-Claw-Klein-Tools-807-18/dp/B0002RI8VO
Buy a quality device in the first place. Build it well. Keep good clearances. Make sure the power-supply is capable. And keep it cool.
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