NOT Blameless Amplifier (Red)

[OnAudio]

Here's the Red Diamond Amplifier.

 

[evette]

Myself and 3 of my friends.. joe

 

[OnAudio]

Myself and 3 of my friends.. joe

Yes sir. Will alert you once am done tweaking the PCBs

 

[ZoltanChivay]

Hi

Can you posted. asc files?
Just for playing?

Thanx

 

[evette]

I like each output has it,s own driver..joe

 

[OnAudio]

Hi

Can you posted. asc files?
Just for playing?

Thanx

Thanks ZoltanChivay

In due time that may be done

kind regards

 

[R Dijk]

How iss your mirrors suppose to work? Ube driver + Ube vas is abt 1,2V that means the input mirror transistors have abt 1.2V Uce? Id love to see real transistors be linear with Uce below 1.5V.
How do you take care of Vas driver bias ? Taken care of by ?? and variations in hfe?
I wil give you a symmetric that have been up in the forum before.
You need a coltroll for your Vas current in dc is stable with variations. Hence you can use your input current bias to control Vas.

 

[OnAudio]

How iss your mirrors suppose to work? Ube driver + Ube vas is abt 1,2V that means the input mirror transistors have abt 1.2V Uce? Id love to see real transistors be linear with Uce below 1.5V.
How do you take care of Vas driver bias ? Taken care of by ?? and variations in hfe?
I wil give you a symmetric that have been up in the forum before.
You need a coltroll for your Vas current in dc is stable with variations. Hence you can use your input current bias to control Vas.

Thanks R Dijk,

There are two vbe multipliers in the voltage stage. All the transistors in this stage will have to be on the main heat sink

kind regards

Harrison.

 

[R Dijk]

Thanks R Dijk,

There are two vbe multipliers in the voltage stage. All the transistors in this stage will have to be on the main heat sink

kind regards

Harrison.

and you think that gives your mirror transistors Uce to bee linnear?

 

[OnAudio]

Perfection is sometimes deceitfully simple looking or plain that one may over look it. We yet have much to re learn, un learn and learn. When one man learns, all men learn.

 

[OnAudio]

Merry Christmas to you and yours

 

[OnAudio]

https://www.diyaudio.com/community/threads/gb-the-red-diamond-amplifier-pcbs.393692/#post-7213631

 

[Antonimus]

The amp still looks like a boring amplifier. Perhaps 'boring' is the wrong word - I often see blameless.

 

[OnAudio]

The amp still looks like a boring amplifier. Perhaps 'boring' is the wrong word - I often see blameless.

Indeed , the key word is looks! you'll finally come around

For the blameless part. This isn't a blameless amplifier clone. I had a talk a year back with Douglas Self during its development. No this isn't the blameless amplifier.

 

[OnAudio]

Myself and 3 of my friends.. joe

Hi Joe check your messages

 

[OnAudio]

Feel free to share your results, challenges and successes

 

[OnAudio]

Several owners reported issues , resulting in changes to the design, please note and effect the necessary changes on the existing PCBs

 

[Mark Tillotson]

Erm, can't see any details in this or the other thread...

 

[OnAudio]

Hi Mark the new changes are reflected on the first post , but let me attach them here also

 

[Mark Johnson]

Regulating 60VDC down to 15VDC using one resistor and one Zener diode? Really?