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Shindo Laboratory Sound Create Producer |
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#1
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De-populate unused sections of tube preamp?
Does anyone know if there is any problem using a preamp where the unused sections have been de-tubed? For example, I only use the line level side of my preamp, not the phono input. Regardless, it's heating up the phono section tubes. The tubes are mildly expensive, perhaps I should pull them and put them aside.
Any thoughts? SA
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Source: Burmester 915 FM tuner / Abbas Audio DAC 3.0SE / Shindo IC's Amplification: Shindo Giscours RA1474-II / Shindo Cortese 300B (Western Electric 1950) / Speakers: Auditorium 23 Solovox / Maxonic D511EX Field Coil horn drivers crossed at about 1000Hz/ BELDEN 9497 Cables/ Motiographic tungar power supply |
#2
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pretty sure that is a bad idea.
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#3
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I definitely wouldn't do so without first contacting a Shindo rep and getting their approval.
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#4
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It is hard enough to get them to work with all the tubes in them why take any out.
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Garth Clearaudio Statement with Tri planner arm Lyra Atlas Burmester 100 phono, Ayre DX5 , Apple tv, Ayre KXR20, Ayre MXR20 , Ayre power con< Ayre signature Interconects , Cardas Clear speaker cables. Decenti subs 2 , Martin Logan CLX, Audio desk , Furutech DeMag Star Light Projector Thousands of records |
#5
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I would contact Shindo. I have an Aesthetix janus which I did the exact thing with for about 6 months before I received my turntable. I did of course call Aesthetix first to verify that it was ok
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#6
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No probs but adjust the heater voltage after the pull by changing one of the white resistors in value to remain 12,5V heater voltage.
Last edited by Hotzenplotz; 03-29-2015 at 08:41 PM. |
#7
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The day anyone takes the advice of Uwe Seck i.e. Hotzenplotz.... Is this user name number five? I wonder when they will ban this new user name.
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#8
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When you pull unused tubes, you unload the filament power supply and the plate power supply, potentially causing them to run at higher voltages. These higher voltages could stress the power supply filter capacitors and cause them to fail prematurely. Much better to just use some cheap new tubes that have the same specs as the ones you want to pull.
Tom
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Main System: Amati Futura Mains Amati Homage VOX Center, Proac Response 1sc Rears, Three MC2301's for L,C,R MC 602 for the rears C 1100, MX 151, MCD 1100, MR 80 Nottingham Dais with Wave Mechanic Sumiko Palo Santos Presentation SurfacePro 3, RPi 4, ROON, WW Starlight Platinum USB, Schiit Yggdrasil, Benchmark DAC3 HGC MX 151, OppO BDP-95, JVC RS-500 DILA projector, 106" diagonal Stewart Luxus Screenwall Deluxe with Studiotek 130 G3 material. Lake House: Ohm F, MC 275V, C2300, MR 77, Rega P3 OnDeck: McIntosh MAC 4300v |
#9
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Thanks Tom,
I was literally just coming to that conclusion (populate with inexpensive alternatives) when I read your message. This seems like the most rational course of action. Simon
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Source: Burmester 915 FM tuner / Abbas Audio DAC 3.0SE / Shindo IC's Amplification: Shindo Giscours RA1474-II / Shindo Cortese 300B (Western Electric 1950) / Speakers: Auditorium 23 Solovox / Maxonic D511EX Field Coil horn drivers crossed at about 1000Hz/ BELDEN 9497 Cables/ Motiographic tungar power supply |
#10
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Thanks Tom. This was literally an excellent advise, too.
Best, Hotz |
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