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#1
12-21-2018, 11:54 PM
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C1100 Tube Replacement
Since I had my C1100 out of the rack to have a firmware update, I decided to replace my line stage tubes with Gold Lion gold pin tubes. I have had them for a while but never got a chance to put them in. I am very pleased with the sound quality I am getting with the new tubes. The stock tubes were a little over 3 years old so I am sure that also helped with my sonic improvement.
I installed them in front of the glass window below the metal covers shown in the picture. Hope I put them in the correct place. It was an easy replacement.
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Paul Harbeth 40.3 XD, Sound Anchor stands w/ Stillpoints, Luxman M900 & C900, Aurender N20, Jay's Audio CDT3 - MK3 CD player, Mola Mola Tambaqui DAC, Shunyata Everest, Altaira Last edited by jdandy; 12-22-2018 at 12:53 AM. Reason: enlarge photo 
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#2
12-22-2018, 01:08 AM
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That’s correct!!
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server, Clearaudio Performance SE. Satisfy tonearm & Maestro Wood MM cartridge. Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables, Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU, Cables: Wireworld Platinum 8 USB, Wireworld Platinum 8 Speaker cables, 6M & 1M Tubulus Concentus ICs, Other:Two PSI Audio AVAA C20, Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack
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#3
12-22-2018, 01:13 AM
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Paul.......Your line level tubes are the ones in the front panel window. There is one 12AX7 and two 12AT7 per channel.
The photo above looks like the moving coil and moving magnet phono stage tubes you see through the glass window in the top cover. The moving coil phono stage uses one 12AX7 and one-half of one 12AT7 per channel. The moving magnet phono stage uses one 12AX7 and one-half of one 12AT7 per channel. The phono stage tube arrangement is what I see in your photo. Looks like you will need to order some more tubes for the line stage.
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Dan  STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A
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#4
12-22-2018, 01:25 AM
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Dan, the tubes you can see in the picture are for the MC & MM phono stage. The 6 line stage tubes are under the removable metal covers shown in front and are the tubes seen through the front glass panel. I should have taken the cover off the line stage tubes to show them better. I don't plan on replacing the MC & MM tubes since I don't have a TT anymore and don't use them.
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Paul Harbeth 40.3 XD, Sound Anchor stands w/ Stillpoints, Luxman M900 & C900, Aurender N20, Jay's Audio CDT3 - MK3 CD player, Mola Mola Tambaqui DAC, Shunyata Everest, Altaira
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#5
12-22-2018, 01:42 AM
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Paul.......Okay, got it. I thought you were talking about the tubes in the photo.
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Dan STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113 VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A
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#6
11-08-2020, 05:31 PM
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came across this. good photo up there Paul. If you have more photos of the inside of the C1100, please share here.
But I wanted to ask... if one disables the phono stages (as I have done via the menu).. does the upper window tubes still energize and thus wear over time? OR are they completely de-electrified?
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#7
11-08-2020, 09:46 PM
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Sorry Sam I don’t have any other photos. I just replaced the tubes and closed the unit back up.Unfortunately even though you turn the phone off stage at the menu the tubes still are energized and have wear on them. I don’t mind since I am not using a turntable.
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Paul Harbeth 40.3 XD, Sound Anchor stands w/ Stillpoints, Luxman M900 & C900, Aurender N20, Jay's Audio CDT3 - MK3 CD player, Mola Mola Tambaqui DAC, Shunyata Everest, Altaira Last edited by PMCH; 11-08-2020 at 09:48 PM.
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#9
11-09-2020, 10:57 AM
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Great pics, thanks, worth 1000 words for sure.
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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
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#10
11-09-2020, 11:47 AM
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Excellent! Much easer to study the situation now.
Beggs the question, how do you get those top mounted tubes out? Looks like they're sandwiched in that metal containment? Last edited by SAM992; 11-09-2020 at 11:50 AM.
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