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Combined Onaudio thread. (23 threads)

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#621
New conceptual model for Type 2

Apologies for keeping you soo long. Heres more tasty stuff for your eyes and mind. Comments welcome.
 

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#624
royville said:
Hello there,

Just wondering if I'm too late for this kind offer?
Would appreciate a couple if there are any left, thanks.

Kind regards
Roy.
Click to expand...

Hi Royville,

Although these are exhausted. Kindly allow me to invite you here.🙂 http://www.diyaudio.com/forums/solid-state/217539-32-pcbs-available-part-2-a.html . Not only will you get 2 free PCBs now but will also get another two from the winning vote. Your joining us will be a step closer to advancing the state of the art.🙂

kind regards,

Harrison.
 
#628
OnAudio,
I just started to install some of the resistors on the boards and was wondering what is the logic of spacing the distance for the leads into the boards so close? What is the reasoning to have the hole distances less than the actual length of the resistors themselves? I see that a few resistors are so close to each other that it seems smart to put some on the bottom because of the resistor diameters or to offset one above the other for a nicer looking layout than trying to squeeze them together. In the past I always was taught to have nice gentle curves to the leads out of a resistor but that is just not possible.

Steven
 
#630
Kindhornman said:
OnAudio,
I just started to install some of the resistors on the boards and was wondering what is the logic of spacing the distance for the leads into the boards so close? What is the reasoning to have the hole distances less than the actual length of the resistors themselves? I see that a few resistors are so close to each other that it seems smart to put some on the bottom because of the resistor diameters or to offset one above the other for a nicer looking layout than trying to squeeze them together. In the past I always was taught to have nice gentle curves to the leads out of a resistor but that is just not possible.

Steven
Click to expand...

For most of the small resistors the grid is 10mm for use with 6mm resistors. Maybe you could post some pictures.Thank you for your valuable feedback.
 
Last edited:
#636
28 1DIFFQC PCBs available

28 1DIFFQC PCBs are available http://www.harrisonaudiolabs.com/Amplifiers/amplifier.htm

1. Check to see that there are PCBs left

2. Add your name to the list

3. Indicate number, max 2

4. Make a donation of $30 to finance the next free PCBs(You automatically qualify for them) info@harrisonaudiolabs.com

5. Paypal $6 shipping or send shipping account with a provider such as UPS or FEDEX (PCBs ship in less than 24 hours)info@harrisonaudiolabs.com

6. Pick a project for the next free PCBs from the collection of available amplifiers http://www.diyaudio.com/forums/solid-state/207746-hal-opb-amplifier.html , http://www.diyaudio.com/forums/solid-state/211972-1diffef-amplifier.html , http://www.diyaudio.com/forums/solid-state/211478-experiment-1diffsym2-audio-amplifier.html , http://www.diyaudio.com/forums/solid-state/211966-chameleon-mode-2diffef-amplifier.html
(winner will be by total votes)
 
#637
OnAudio said:
Here we go
Click to expand...
What is the most used (colloquial) term for this front end topology?

I have heard until now follow:

1) push-pull differential input
2) push pull differential cascode (by use of an additional cascode transistor)
3) push-pull LTP
4) your term
5) mirror-symmetric front-end
6) cantonese chicken input (actually more often used for a circlotron/CSPP)

For stage use this amp model exist: "Chameleon 2200S power amplifier" - for schematics go to
Chameleon 2200S stereo power amplifier. Free data sheet by GB Audio
 
#638
You can make a donation of $20 to fund future projects and receive 2 free PCBs now. Or you can make a donation of $30 to fund future projects and receive 2 free PCBs now and 2 more free PCBs later. The market value of one board is $40.

kind regards,

Harrison.
 
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