Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems G08-G02 Up Sampling Rate with XLR connections

Hello,

According to G08`s manual, “the player upsamples the digital information from the 44.1kHz,
16-bit signal of conventional CD to 24 bits, and to a sample rate of 176.4kHz for digital to analogue conversion to drive the analogue outputs, and 88.2kHz for the digital outputs.”

I am confused because I checked the output resolution and I found that is has two sample rates, one to 44Khz and another to 88Khz, the configuration is set out to a sampling rate of 88.2Khx, however I am connecting the Go8 to a G02 Stereo Controller using Balance XLR Analog terminals. I am not using Digital or Optical output.

I sent a note to Meridian but their response did not help me.

How Can I configure the sampling rate on the analog output to 174.Khz?

Many thanks,

Jose

Hi Jose,

I think you make a slight confusion here. Upsampling has a slightly different meaning when using analogue outputs. On the balanced analogue (XLR) outputs you ALWAYS get a Digital to Analogue converted signal based on a 176.4kHz digital signal upsampled to this rate before conversion. You cannot turn off upsampling for the analogue outputs, it's an internal process intimately related with filtering and other signal processing before the DACs.

On the digital outputs (coax and optical) the upsampling will be 88.2kHz unless you explicitly choose not to upsample - on digital outputs only! - by correspondingly typing your G08.
Digital signal processing is different for a fully digital signal path!

I will first quote from the G07/08 user manual - intro, page 2, right column, under G08 24 Bit Upsampling CD Player:

"Once the digital data stream has been recovered from the disc, powerful on-board Digital Signal Processing (DSP) with the capability of an impressive 150 MIPS (million instructions per second) upsamples the digital information from the 44.1kHz, 16-bit signal of conventional CD to 24 bits, and to a sample rate of 176.4kHz for digital to analogue conversion to drive the analogue outputs, and 88.2kHz for the digital outputs."

Then, on page 14, you will find typing info:

"Type Description
Type 1 Volume display off.
Type 2 Volume display on.
Type 3 (G08 only) Volume display off, digital output limited to
44.1kHz."

So, you can only limit DIGITAL output to 44.1kHz, it normally goes out at 88.2kHz.

Analogue output (e.g. on XLR) is obviously an ANALOGUE signal, obtained by converting a digital signal after upsampling it 4x to 176.4kHz.

Hope this helps.
Cheers,

Dorian

You don't need to configure it to upsample to 176.4kHz, that's what it does - as the text you quoted from the manual states.

Mark S

Thank you to both Dorian and MArk!

Regards

Jose

Hi !

@ Jose and all User

I have the same Equipment of Meridian as Jose (only HIFI).
The Meridian G 08 and complete XLR-Connektion since several days.
I want to know which Gain of the G 02 is the best, or is recommened by Meridian?

sorry for my bad english

Thank you

Peter

p.s. XLR and LS-Cable of Eichmanncable Express Six (Australia)

Hi Peter,

I use 0.5V gain, I have tried different gains but I have found that this is the best formy system (taken into account my speakres as well).

Rgs

Jose

Hi Jose,
thanks for your answer.
I am rather astonished which gain you use.So far I use gain 2,0 or 2,8 because I am afraid of overblasting the NF-signal. But I will try your proposal.

Regards

Peter

P.S. In the last days I tested the new G 06 vs. G 08, and I think the G 08 is much better-almost one lever higher (IMHO because of the possibilty of upsampling)