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+--- Thread: Phono Stage After Firmware 8.0 Upgrade (/Thread-Phono-Stage-After-Firmware-8-0-Upgrade)
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Phono Stage After Firmware 8.0 Upgrade - tortolita - 16-May-2015
Have installed the Firmware 8.0 upgrade successfully, however something's changed in the phono stage. Using precisely the same settings on the phono stage as the previous firmware the gain has shifted enormously. Before 8.0 playing a record at -10 db was almost 95 db peak. After 8.0 I'm not getting decent gain until -2.5 db. I had thought that Le Configurateur was not recognizing my selection of a MC cartridge and was instead using the MM gain stage erroneously. But that appears to not be the case. Any advice is appreciated.
RE: Phono Stage After Firmware 8.0 Upgrade - f1eng - 16-May-2015
I haven't tried yet, but the publicity about the new phono stage mentions continual optimisation.
Maybe the start ADC gain setting is low to be well away from ever clipping and it will slowly adjust as you play records to optimise the ADC settings whilst avoiding input clipping.
Certainly, with the old firmware, setting my input voltage to the cartridge makers specified 5cm/sec output voltage resulted on ADC input clipping on some heavily modulated LPs.
RE: Phono Stage After Firmware 8.0 Upgrade - octaviars - 17-May-2015
(16-May-2015, 12:43)f1eng Wrote: I haven't tried yet, but the publicity about the new phono stage mentions continual optimisation.
Maybe the start ADC gain setting is low to be well away from ever clipping and it will slowly adjust as you play records to optimise the ADC settings whilst avoiding input clipping.
Certainly, with the old firmware, setting my input voltage to the cartridge makers specified 5cm/sec output voltage resulted on ADC input clipping on some heavily modulated LPs.
I dont think there is anything self adjusting, my Clearaudio MC pickup is set to 420uV wich is what Clearaudio stated in it`s whitepapper. But I can go down to 250uV in the meny while palying a record without clipping so there is a bit of testing there to be done to get the right output and not to much noise.
RE: Phono Stage After Firmware 8.0 Upgrade - Finn - 19-May-2015
Could have use settings from Audio note IOI. and kiseki purpleheart and other caridge in that spektre ,
RE: Phono Stage After Firmware 8.0 Upgrade - hahe - 24-May-2015
Does any of you experience a pretty audible humbling Bass sound since upgrade ?
This mainly is on my right loudspeaker and seems also has been present in 7.1.1 although much more silent there and hence not disturbing (only did recognize now when reverting back and comparing)
The Sound is not linked to subsonic setting and or phono pluged into Devialet or not
Just switching Input to phono is causing this result
With any Other Input Setting than phono the Sound does not occur and all is silent without signal
RE: Phono Stage After Firmware 8.0 Upgrade - hahe - 24-May-2015
(24-May-2015, 17:11)hahe Wrote: Does any of you experience a pretty audible humbling Bass sound since upgrade ?
This mainly is on my right loudspeaker and seems also has been present in 7.1.1 although much more silent there and hence not disturbing (only did recognize now when reverting back and comparing)
The Sound is not linked to subsonic setting and or phono pluged into Devialet or not
Just switching Input to phono is causing this result
With any Other Input Setting than phono the Sound does not occur and all is silent without signal
problem resolved - was a grounding issue due to a loose cable - will start testing v8 phono now and share findings
RE: Phono Stage After Firmware 8.0 Upgrade - samurai7595 - 27-May-2015
I've done some extensive testing with my analog setup and prefer the sound when using my Rega Aria MC/MM phono stage as opposed to the built-in phono stage in my Devialet 200.
Via RAM, I've tried different settings for my Rega Apheta 2 MC cart but still prefer the sound via the Rega Aria phono.
As for the rest of my setup, I like Firmware 8.0.0 and I've had no issues at all!
RE: Phono Stage After Firmware 8.0 Upgrade - wiresandmore - 29-May-2015
While the phono stage sounds great, I do get quite a lot of hiss on it - it's set as per the configurator for my Dynavector XX2MkII - I don't notice it other than "between tracks" but it is definitely there.....anyone else have this?
RE: Phono Stage After Firmware 8.0 Upgrade - NickB - 29-May-2015
I did so got a pair of step up transformers and that sorts out the hiss and the sound quality.
RE: Phono Stage After Firmware 8.0 Upgrade - wiresandmore - 30-May-2015
Thanks - very interesting. So how did you configure the phono stage with the step-ups in place? Did you customise the gain/loading parameters? Which SUT did you use?