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-   -   Doug Self Preamp from Linear Audio #5 (https://www.diyaudio.com/forums/analog-line-level/280458-doug-self-preamp-linear-audio-5-a.html)

zrxshack 2nd October 2015 11:36 AM

Please put me down for 1 kit.

Thank You.

rock12 2nd October 2015 03:15 PM

put me down for one kit thanks

Carl_Huff 2nd October 2015 04:00 PM

Great!

Let's start a group buy list. I'll leave it up for 30 days or so. Expect delivery to be mid to late November

georgebrooke - 1kit
Halauhula - 1 kit
hfxrzw - 2 kits
PJN - 1 kit
kiroje - 1 kit
still4given - 1kit
GlennW - 1kit
erik777 - 1 kit
arthur - 1 kit
zrxshack - 1 kit
rock12 - 1 kit

If you have asked to be added to the list but don't see your name be sure to let me know!

Carl_Huff 2nd October 2015 04:05 PM

A quick note in response to questions that I have received via email ...

* The film capacitors are all specified as WIMA
* The electrolytics caps as Nichicon MUSE
* And the resisitors are all to be 1% metal film.

All parts (not in the kit) are available from Mouser. I will be providing a detailed BOM

Carl_Huff 2nd October 2015 04:24 PM

This preamplifier draws a bit of current, upwards of 650 milliamps steady state. It deserves to be fed by a quality & quiet power supply. Anybody here have a tested favorite? To this point I have been using my dev lab power supply.

This project requires a +/-15 volt supply that can sink 1 amp (allows for project addons). Bring out your power supplies!

Anybody here have a 'tried and true' low parts count series pass dual regulator using a MOSFET as the pass element??

That would be interesting ...

georgebrooke 2nd October 2015 04:59 PM

Power Supplies
 
Quote:

Originally Posted by Carl_Huff (https://www.diyaudio.com/forums/analog-line-level/280458-doug-self-preamp-linear-audio-5-a-post4471007.html#post4471007)
This preamplifier draws a bit of current, upwards of 650 milliamps steady state. It deserves to be fed by a quality & quiet power supply. Anybody here have a tested favorite? To this point I have been using my dev lab power supply.

This project requires a +/-15 volt supply that can sink 1 amp (allows for project addons). Bring out your power supplies!

Anybody here have a 'tried and true' low parts count series pass dual regulator using a MOSFET as the pass element??

That would be interesting ...

Although it does not quite fit your spec, I have used the design at Power Supply for Preamps several times without any problems at all. It does go back to 2007 .

George

Carl_Huff 2nd October 2015 05:11 PM

Quote:

Originally Posted by georgebrooke (https://www.diyaudio.com/forums/analog-line-level/280458-doug-self-preamp-linear-audio-5-a-post4471027.html#post4471027)
Although it does not quite fit your spec, I have used the design at Power Supply for Preamps several times without any problems at all. It does go back to 2007 .

George

Hello George,

Yea, that's a very standard (yawn ...) design straight from the TI app notes . I have a similar (if not the same) circuit as a stock item myself. In fact I have a couple of variations committed to fabbed PCBs on hand should anyone be interested.

georgebrooke 2nd October 2015 05:36 PM

Excitement
 
Quote:

Originally Posted by Carl_Huff (https://www.diyaudio.com/forums/analog-line-level/280458-doug-self-preamp-linear-audio-5-a-post4471040.html#post4471040)
Hello George,

Yea, that's a very standard (yawn ...) design straight from the TI app notes . I have a similar (if not the same) circuit as a stock item myself. In fact I have a couple of variations committed to fabbed PCBs on hand should anyone be interested.

Yes, it would be nice to have something a little more exciting..and which works well of course. I guess we need some more input on this one.

canute 2nd October 2015 06:11 PM

How do we pay ? Do you have paypal ?

If so - please count me in for 1 kit

Best regards

Knud

Carl_Huff 2nd October 2015 06:23 PM

Quote:

Originally Posted by canute (https://www.diyaudio.com/forums/analog-line-level/280458-doug-self-preamp-linear-audio-5-a-post4471096.html#post4471096)
How do we pay ? Do you have paypal ?

If so - please count me in for 1 kit

Best regards

Knud

Yup, I have PayPal. I will add your name to the list. I will begin invoicing people for payment early November. Delivery should be no later than mid month.


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