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It is currently 17 Feb 2019, 20:37

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PostPosted: 22 Jan 2019, 01:38 
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Joined: 04 May 2018, 05:06
Posts: 4
eshazen wrote:
Planning to use 3 turret boards, one for the unregulated part of the PS, and two identical ones with the regulator and one channel each. Omitting the cathode follower stage since it will be driving a Forewatt input.

Layout: Image

My schematic (amp): http://ohm.bu.edu/~hazen/TubeAmp/Groove/groove_4tube_amp.png

My schematic (ps): http://ohm.bu.edu/~hazen/TubeAmp/Groove/groove_4tube_ps.png


I myself also decided on separate pcb's.
Less wires than a fully hardwired build and the fredom to move things around.

Where does your heater supply go in this?
I did put it on a separate board.


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PostPosted: 22 Jan 2019, 12:47 
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Joined: 16 Feb 2016, 19:45
Posts: 39
Location: Boston, USA
Have you finished your build? Photos?

Yeah, I didn't show the heater supply. I was thinking of another board stacked above the main PS board on stand-offs. Hopefully the chassis won't be too crowded.

All the parts are due in about a week... then the real fun begins!

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Eric Hazen


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PostPosted: 08 Feb 2019, 14:21 
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Joined: 29 Mar 2013, 20:37
Posts: 149
Location: Italy
Hi Bruce, I would like to know if I can use the groovewatt for a MMC cartridge (Bang & Olufsen) thank you


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PostPosted: 09 Feb 2019, 15:43 
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Joined: 09 Oct 2012, 19:43
Posts: 328
Location: Vancouver Canada
TIJ-NIKI look at the project itself from the main page. It has all the specs and answers you ask and more on
this beauty.


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PostPosted: 10 Feb 2019, 17:15 
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Joined: 04 Jun 2008, 20:59
Posts: 3911
Location: Arizona, USA
Hi, It will handle any cartridge that behaves like a MM or MI with an output of between 1.5 millivolts to 10 or more. There is a lot of headroom in the input stage. Impedance is 47K but you can change that to suit other cartridges.

Good listening
Bruce

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Some of my DIY Tube Amplifier Projects:


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PostPosted: 10 Feb 2019, 17:24 
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Joined: 29 Mar 2013, 20:37
Posts: 149
Location: Italy
Thats what I needed to hear, thank you Bruce


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