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-   -   Simpelstark+ ODNF amplifier boards GB (https://www.diyaudio.com/forums/group-buys/341363-simpelstark-odnf-amplifier-boards-gb.html)

meanman1964 21st September 2019 07:46 PM

Quote:

Originally Posted by vzaichenko (https://www.diyaudio.com/forums/group-buys/341363-simpelstark-odnf-amplifier-boards-gb-post5921306.html#post5921306)
Hi Meanman,

This version (v1.3) utilizes the class AB OPS with wider than normal class A region. Outputs configuration may look like CFP at a first glance but it's not. Configuration with "helper" transistors used here is rather low distortion open loop - that was my intention for this amplifier.

You can download the schematic if you register in the store - just let me know as soon as you create your account, I will give you the access for downloading the docs (manual procedure).

Cheers,
Valery

Already created an account .

vzaichenko 21st September 2019 08:01 PM

Quote:

Originally Posted by meanman1964 (https://www.diyaudio.com/forums/group-buys/341363-simpelstark-odnf-amplifier-boards-gb-post5921440.html#post5921440)
Already created an account .

OK, please try the link "Building Guides" in DOWNLOADS area.

meanman1964 22nd September 2019 09:22 AM

Quote:

Originally Posted by vzaichenko (https://www.diyaudio.com/forums/group-buys/341363-simpelstark-odnf-amplifier-boards-gb-post5921449.html#post5921449)
OK, please try the link "Building Guides" in DOWNLOADS area.

Thanks , all okay .

Vunce 23rd September 2019 03:40 AM

Boards received.
Time to start putting together a parts cart :)

Thanks Jeff & Valery

zman01 23rd September 2019 04:15 AM

Vunce,

Look forward to build updates. :)

vzaichenko 26th September 2019 07:08 AM

Hello All!

All the GB orders placed up till now are shipped.
Building guides are available for download (you need to be logged in).
If somebody forgot to place an order - DIYAUDIO discount code is active until October 1.
Questions, suggestions, requests for assistance are welcome - please let me or Jeff know.

Cheers,
Valery

pinnocchio 27th September 2019 12:31 AM

Hi Valery, Jeff,

What is the DC supply voltage range? And recommended for 4 ohms use?

Thanks
Do

vzaichenko 27th September 2019 02:33 AM

Quote:

Originally Posted by pinnocchio (https://www.diyaudio.com/forums/group-buys/341363-simpelstark-odnf-amplifier-boards-gb-post5926670.html#post5926670)
Hi Valery, Jeff,

What is the DC supply voltage range? And recommended for 4 ohms use?

Thanks
Do

Hi Do,

The nominal rails voltage is +/-50V DC.
However, it will run nicely with 4-ohm load at around +/-40V DC.

Cheers,
Valery

vzaichenko 27th September 2019 06:08 AM

Oops! Forgot to mention - I have removed the GB collection from the front page of the store, but it's still there. GROUP BUY menu item on the left. Here is the direct link:
SIMPELSTARK GB – Virtual Zero Audio Store

Cheers,
Valery

trung224 27th September 2019 10:56 AM

Hello Valery,

when I order Simpelstark on GB in your website, I can not use the discount code you wrote on page 1 when checking out.

Cheers,
Trung


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