Re: Re: Re: Re: Re: Re: Opus Met problem
It's Baaack!
Turned on system this morning and 'EEEEEEEEE' from speakers.
Then I tried turning power and pre amps off. Turned cd spinner on
first then turned pre and power amps back on. No 'EEEEEEE' ? Is some sort of reset signal sent from cd player to Opus RCVR when powered up?
=================================================ichiban said:Well, put the MET back in and no odd noise.
How it all worked for two weeks
and then went south?
Thanks to all for your help.
It's Baaack!
Turned on system this morning and 'EEEEEEEEE' from speakers.
Then I tried turning power and pre amps off. Turned cd spinner on
first then turned pre and power amps back on. No 'EEEEEEE' ? Is some sort of reset signal sent from cd player to Opus RCVR when powered up?
Re: Re: Re: Re: Re: Re: Re: Opus Met problem
I have never seen this before... So I am not sure what is going on.
The WM8804 board should not need any external reset on loss of signal. It should simply send silence.
That makes me think the SPDIF input might be suspect, but I have no way to know.
The Metronome should not need to be reset since it always gets a signal from the WM8804.
Cheers!
Russ
ichiban said:
=================================================
It's Baaack!
Turned on system this morning and 'EEEEEEEEE' from speakers.
Then I tried turning power and pre amps off. Turned cd spinner on
first then turned pre and power amps back on. No 'EEEEEEE' ? Is some sort of reset signal sent from cd player to Opus RCVR when powered up?
I have never seen this before... So I am not sure what is going on.
The WM8804 board should not need any external reset on loss of signal. It should simply send silence.
That makes me think the SPDIF input might be suspect, but I have no way to know.
The Metronome should not need to be reset since it always gets a signal from the WM8804.
Cheers!
Russ
IEC 320 power inlet with filter
I am looking for a good source (not too pricey) for IEC power inlets with built in filter. I will need about 6 of them. I tried with Apexjr (2 bucks great price) but he has a min order of 20.00.
Does anyone have a good source for these? Links?
Thank you
Darren
I am looking for a good source (not too pricey) for IEC power inlets with built in filter. I will need about 6 of them. I tried with Apexjr (2 bucks great price) but he has a min order of 20.00.
Does anyone have a good source for these? Links?
Thank you
Darren
Re: IEC 320 power inlet with filter
Altronics has them
http://www.altronics.com.au/index.asp?area=item&id=P8352
DarrenWadsworth said:
Altronics has them
http://www.altronics.com.au/index.asp?area=item&id=P8352
Mounting a PCB, behind the front panel, that has micro switches (with a hole drilled in the panel to access the switch).
Such as this one. Which is the CD-ROM ctrlr (ff, rew...) for the player I am building using the Opus:
What can I set up actuate the button?
I have looked everywhere for some sort of spring loaded shaft that extends slightly beyond the front panel. It's been driving me crazy. I can't find anything. Is this a DIY only thing? Or is there premade button extenders/actuators? If not, does anyone have any ideas how to do this?
Thank you
Darren
Such as this one. Which is the CD-ROM ctrlr (ff, rew...) for the player I am building using the Opus:
An externally hosted image should be here but it was not working when we last tested it.
What can I set up actuate the button?
I have looked everywhere for some sort of spring loaded shaft that extends slightly beyond the front panel. It's been driving me crazy. I can't find anything. Is this a DIY only thing? Or is there premade button extenders/actuators? If not, does anyone have any ideas how to do this?
Thank you
Darren
Is "Ultralock " similar to the Metronome?
http://www.benchmarkmedia.com/appnotes-d/whyultralock.html
http://www.benchmarkmedia.com/appnotes-d/whyultralock.html
Is this anything like Grace Design's S-Lock as well??
Taken from their manual:
s-Locktm is our new PLL (Phase Lock Loop) circuitry that has been specifically developed for the m902
and its big brothers the m904 and multi-channel controller, the m906. The truly wonderful thing about
s-Lock is that regardless of the condition of the external clock used as a reference for the m902, s-Lock
will take this clock source and provide an extremely stable and ultra-low jitter clock to run the DACs. The
goal, of course, is pristine audio. We think you’re going to love s-Lock so here’s a bit more detail on how
this works:
s-Lock is a crystal-based PLL used for regenerating the incoming digital clock. The crystals used have
extremely low intrinsic jitter and are capable of locking to sample rates of up to 192kHz. When the digital
input selected for the DAC is active, the s-Lock circuitry automatically captures the incoming recovered
clock from AES3, S/PDIF, TOSLINK, or USB. Once phase-lock with the incoming signal has been achieved,
the DACs, which have been running off the original clock, are switched to run off the ultra-low jitter
s-Lock system clock. If at any time s-Lock is lost or not achieved, the DACs are run off the original clock.
The s-Lock system can effectively lock to input sample rates of 44.1kHz or 48kHz +/- 10Hz, 88.2kHz or
96kHz +/- 20Hz and 176.4kHz or 192kHz +/- 40Hz.
If the incoming digital audio signal clock frequency is outside of these tolerances the s-Lock circuit will
not lock and the s-Lock indicator on the m902 will extinguish. Even if the s-Lock does not achieve lock,
the digital audio receiver circuits in the m902 can achieve excellent recovered clock jitter performance.
Taken from their manual:
s-Locktm is our new PLL (Phase Lock Loop) circuitry that has been specifically developed for the m902
and its big brothers the m904 and multi-channel controller, the m906. The truly wonderful thing about
s-Lock is that regardless of the condition of the external clock used as a reference for the m902, s-Lock
will take this clock source and provide an extremely stable and ultra-low jitter clock to run the DACs. The
goal, of course, is pristine audio. We think you’re going to love s-Lock so here’s a bit more detail on how
this works:
s-Lock is a crystal-based PLL used for regenerating the incoming digital clock. The crystals used have
extremely low intrinsic jitter and are capable of locking to sample rates of up to 192kHz. When the digital
input selected for the DAC is active, the s-Lock circuitry automatically captures the incoming recovered
clock from AES3, S/PDIF, TOSLINK, or USB. Once phase-lock with the incoming signal has been achieved,
the DACs, which have been running off the original clock, are switched to run off the ultra-low jitter
s-Lock system clock. If at any time s-Lock is lost or not achieved, the DACs are run off the original clock.
The s-Lock system can effectively lock to input sample rates of 44.1kHz or 48kHz +/- 10Hz, 88.2kHz or
96kHz +/- 20Hz and 176.4kHz or 192kHz +/- 40Hz.
If the incoming digital audio signal clock frequency is outside of these tolerances the s-Lock circuit will
not lock and the s-Lock indicator on the m902 will extinguish. Even if the s-Lock does not achieve lock,
the digital audio receiver circuits in the m902 can achieve excellent recovered clock jitter performance.
Sure it is "like" it, in this sense. The metronome provides a clean jitter free master clock and cleans up (highly attenuates) any jitter which might be present on the input source. The WM8804 board also has a built in low jitter PLL so if you use that with the metronome you get two mechanisms for cleaning up the signal.
Cheers!
Russ
Cheers!
Russ
There is a write up on the USB Benchmark DAC in the new January 08 Stereophile that showed up today. It uses an AD1896 and I had confirmed that by opening my original Benchmark DAC a while back. I have not been able to directly compare with the Metronome as I only have the beta Opus and will have to wait for the new batch of Opus to put the setup together.
However, I have compared my beta Opus with my Benchmark and have had a hard time finding any difference from listening. The Benchmark may be a touch more analytic and detailed. I prefer listening to the Opus for longer listening sessions. I don't have the equipment to make comparative measurements, so have to stick with what sounds good.
However, I have compared my beta Opus with my Benchmark and have had a hard time finding any difference from listening. The Benchmark may be a touch more analytic and detailed. I prefer listening to the Opus for longer listening sessions. I don't have the equipment to make comparative measurements, so have to stick with what sounds good.
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