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Genera mods... |
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TIM
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Joined: 30 Sep 2011 Status: Offline Points: 18 |
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Topic: Genera mods...Posted: 09 Jul 2014 at 10:36am |
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Hello all! I've been using my Genera phono preamp for over 2 years now and it's brought me a great deal of pleasure - many hundreds of LPs have coursed through it's little components and I've enjoyed every moment. Recently, I read through my copy of the notes that Graham sends out with the Genera kit and there's a couple of things he mentions that have piqued my interest and started me wondering if there's any mods I could carry out that would elevate it's performance even further...
Firstly, he writes that the electrolytic capacitors should be of at least 35V DC working value, but using capacitors of 63 to 160V will lead to improvements in clarity. Secondly, there's mention of using film bypass capacitors to effect a further boost to sound quality. Has anyone tried this? Surely we'd be silly to ignore such a tempting carrot dangling right there! I'd be really interested in any thoughts on this, and as I'm no expert on electronics does anyone have suggestions as to makes/values for the capacitors that may be suitable for such a modification. Regards, Tim. |
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LOINER
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Joined: 18 Aug 2013 Location: LEEDS Status: Offline Points: 450 |
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Posted: 09 Jul 2014 at 12:47pm |
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Oh Dear I suspect your going home with note
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STUART
SOLO ULTRA LINEAR DIAMOND EDITION LAUTUS DUAL MONO 1.5M INTERCONNECTS GRAM AMP 2SE |
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TIM
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Joined: 30 Sep 2011 Status: Offline Points: 18 |
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Posted: 09 Jul 2014 at 2:34pm |
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Is going home with a note a good thing or a bad thing?
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ICL1P
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Joined: 04 Aug 2012 Location: Faringdon, Oxon Status: Offline Points: 2397 |
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Posted: 09 Jul 2014 at 5:55pm |
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It can be entertaining as well as educational.
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Ifor
===== Reflex M & ACCESSION M, CuSat50, Majestic DAC, a Proprius pair. |
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Fatmangolf
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Joined: 23 Dec 2009 Location: Middlesbrough Status: Offline Points: 9695 |
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Posted: 09 Jul 2014 at 10:04pm |
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I modified my Genera with switchable input capacitors so I had 100pF, 220pf and both as options. Graham was very helpful.
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Jon
Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC. |
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TIM
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Joined: 30 Sep 2011 Status: Offline Points: 18 |
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Posted: 14 Jul 2014 at 7:51pm |
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Jon - did you ever try the bypass capacitors on your Genera? Last night I read back through the whole topic on the Genera design (all 46 pages, took ages) and I noticed that you'd asked Graham about capacitor types, values etc for bypassing. It sounds so good currently that I wonder if I'd be best to leave it alone, but you know what it's like... My turntable is going away in a few days for a bit of TLC and some upgrades so now seems like a good time to look into any possible tweaks to the phono amp.
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Fatmangolf
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Joined: 23 Dec 2009 Location: Middlesbrough Status: Offline Points: 9695 |
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Posted: 14 Jul 2014 at 8:41pm |
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I didn't get round to bypassing the input and output capacitors. If you leave the preamp alone and powered up, you'll be able to judge the impact of the TLC on the turntable better.
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Jon
Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC. |
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