High Power Chip Amp

[Mark Allen]

I have all my other necessary parts except the chassis. I just received the Lundahl input transformers on Friday to complete the parts line up. As for the chassis I will probably look into one of the Par Metal chasiss. I think I can get one narrow enough yet deep and tall enough that I can mount heat sinks on both sides. The Asian folks certainly have some nice chassis available but the shipping alone is beyond rediclous!

[Mark Allen]

Woohoo, I received my boards and parts today, Thanks P.A.! They look great! I just need to remember not to sneeze when handling the SMT parts...

Mark

[Mark Allen]

I've just about finished assembling my boards. I did not find the SMT aspect of this at all difficult. Just remember NOT to sneeze or the parts might be found some day orbiting the earth!

I am however in a real dilemma! I've also been listening to this Class D T.I. based board I bought from Class D Audio and to be honest it's the finest amp I've ever listened to... not sure I need to finish building this chip amp...? Its very definitely far better than the following amps I have here...
Pass Aleph 2's, Aleph 30, Aleph Mini and both the KSA50 and KSA100 Krell Clones. So the real quagmire is what do I do with all these analog amps and do I even bother to finish this chip amp project??? Perhaps I should do something a bit more exotic like a T.I. based class D amp with vaccum tube front end....

Yes, it IS really that good!

Mark

[star882]

I'm glad you're happy with your new hybrid.

For your next project, how about a TI pure digital?

[a.wayne]

Originally Posted by Mark Allen

I've just about finished assembling my boards. I did not find the SMT aspect of this at all difficult. Just remember NOT to sneeze or the parts might be found some day orbiting the earth!

I am however in a real dilemma! I've also been listening to this Class D T.I. based board I bought from Class D Audio and to be honest it's the finest amp I've ever listened to... not sure I need to finish building this chip amp...? Its very definitely far better than the following amps I have here...
Pass Aleph 2's, Aleph 30, Aleph Mini and both the KSA50 and KSA100 Krell Clones. So the real quagmire is what do I do with all these analog amps and do I even bother to finish this chip amp project??? Perhaps I should do something a bit more exotic like a T.I. based class D amp with vaccum tube front end....

Yes, it IS really that good!

Mark

Hello Mark ,

Could you please give us a little more back ground , as your claim is very interesting .

1. What kind of speakers are you using to evaluate these amplifiers ?.
2. Where did you obtain your class d amp ,? is it a kit ?
3. Is it really better than these listed Pass Aleph 2's, Aleph 30, Aleph Mini and both the KSA50 and KSA100 Krell Clones.


How So ?

regards,

[Mark Allen]

Yes, it is way weay better then the amps I listed there all of which I built over the years. The amazing thing about the Class D T.I. based amp is how darn clean the audio is and how much more detail gets through that you didn't even know was on the recording. How many analog amps do you know whose output stage is capable of switching at 500khz? Probably none! There IS no warm up period either. Just flip the switch and listen. You would have to hear it to beleive it. I just don't see myself continuing on constructing any analog amps any longer... Keep in mind though that if you have bad sounding source material it is going to be just that much more bad sounding!! Good source material is mandatory!!

As far as an all digital T.I. amp I don't think you can because I believe the chips have an analog input to them. Next up I want to use the amp in true balanced mode. Right now I'm just single ended using a Grounded Grid Preamp to drive it and listening on Dynaudio speakers.

Oh, by the way www.classdaudio.com

Mark

[a.wayne]

Mark ,
I must ask , do you have any affiliation with class D audio ? ......

I have spoken to TOm and will be giving one a try, interesting to see if it smokes my analog amplifier in the same way ...

regards,

[star882]

As far as an all digital T.I. amp I don't think you can because I believe the chips have an analog input to them. Next up I want to use the amp in true balanced mode. Right now I'm just single ended using a Grounded Grid Preamp to drive it and listening on Dynaudio speakers.

The hybrids have analog input. There are pure digitals that accept I2S. Some of them have the DSP and power stage in separate chips since high speed logic and power electronics need different process optimization during manufacture.

[Mark Allen]

Mark ,
I must ask , do you have any affiliation with class D audio ? ......

Nope, none! I've only bought the one module from them. I have just been astounded by the headway that Class D has made over the last few years. What analog amp do you have there?

Mark

[a.wayne]

Originally Posted by Mark Allen

Nope, none! I've only bought the one module from them. I have just been astounded by the headway that Class D has made over the last few years. What analog amp do you have there?

Mark

Modified Adcom 565 monobloc, Krell KSA 100s, Perreaux 2150B, OCM, Crown DC300A and recently Parasound Halo which was not mine but i was attempting to review for purchase .. Good sounding but could not play the load presented ...


I was looking at doing an Aleph F5 , or an A75 when i ran into this
class -d talk. I 'm now tempted to try one , must admit , i think it will be a disappointment based on my knowledge( or lack thereof) and Bias towards class-d amplification..

My current reference speakers are very revealing and difficult to power along so we will see what happens with the little "D " dat could ....