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brombo
PostPosted: August 9th, 2022, 3:02 pm 
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Joined: July 8th, 2016, 4:34 pm
Posts: 598
https://www.youtube.com/watch?v=x0NVb25p1oU
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ratbagp
PostPosted: August 9th, 2022, 7:14 pm 
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Joined: January 14th, 2015, 11:15 pm
Posts: 500
I once attended a concert in Philadelphia where Muti conducted Messiaen's Turangalila which features the Ondes Martenot. It was the loudest piece I ever heard in a concert hall.

https://en.wikipedia.org/wiki/Turangal%C3%AEla-Symphonie

Today is our two-year anniversary of arriving at our unit overlooking the sea in Australia. As part of the celebrations, I will start testing a 2P29L - 45 SE amp.

ray
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TubeDriver
PostPosted: August 10th, 2022, 9:37 am 
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Joined: March 12th, 2013, 11:12 am
Posts: 739
That sounds like a cool amp. You using a battery or SMP for the 2P29L?



ratbagp wrote:
I once attended a concert in Philadelphia where Muti conducted Messiaen's Turangalila which features the Ondes Martenot. It was the loudest piece I ever heard in a concert hall.

https://en.wikipedia.org/wiki/Turangal%C3%AEla-Symphonie

Today is our two-year anniversary of arriving at our unit overlooking the sea in Australia. As part of the celebrations, I will start testing a 2P29L - 45 SE amp.

ray
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ratbagp
PostPosted: August 10th, 2022, 5:13 pm 
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Joined: January 14th, 2015, 11:15 pm
Posts: 500
Initially, the filament bias similar to what Ale Moglia uses, but using an LM1086 instead of the Rod Coleman filament supply. The plate load is just a resistor at this stage.

https://www.bartola.co.uk/valves/tag/2p29l-preamp/

If I like what I hear, then I will start making changes.

ray
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