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Hagerman Bugle [message #11528] Mon, 08 March 2004 21:08 Go to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
I've been running this op amp based Phono Amp on two 9V and the sound's been pretty good. However, I built the +/-15V regulated power supply over the weekend, and now the turntable rocks! With battery power, it gave off a very warm, relaxed and lush sound. The extra headroom from the power supply punches it up several notch.

The platter geeks are right. Vinyl can sound awesome!

Highly recommended for anyone looking for an excellent DIY box for under $100. I've already collected parts for the tube based Cornet and hope to complete it by Spring.

Gar.


Re: Hagerman Bugle [message #11529 is a reply to message #11528] Tue, 09 March 2004 08:59 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18686
Registered: January 2001
Illuminati (33rd Degree)
Pretty cool!

Did you use a 7815 and a 7915 for your supply?

Re: Hagerman Bugle [message #11530 is a reply to message #11529] Tue, 09 March 2004 09:21 Go to previous messageGo to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
Both. 7815 for the positive rail, 7915 for the negative rail as per Hagerman's design.

Re: Hagerman Bugle [message #11531 is a reply to message #11530] Tue, 09 March 2004 10:52 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18686
Registered: January 2001
Illuminati (33rd Degree)
Yep, yep. That's what I thought. When I need only an amp or less at 5, 12 or 15 volts, I use 7xxx regulators. A 7xxx regulator, bridge rectifier, transformer and a couple of electrolytic caps and you have an excellent little regulated supply.

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