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#273010 - 2018-02-11 21:11 0dB point on DSP speakers
Registered: 2016-10-31
Posts: 56
Nstzya Offline
Mostly harmless
Nstzya Offline
Mostly harmless

Registered: 2016-10-31
Posts: 56
Loc: Indianapolis, USA
Anyone know what the 0dB point is for DSP5k’s (and presumably all DSP speakers)? Something less than 100?


Bottom: DSP5000/18, 500.2, Bluesound Node 2 (MQA)
On Top: (of DSP5000/18) Martin Logan LX16, Velodyne Optimum 10, Bluesound Powernode 2 (Full MQA)
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#273014 - 2018-02-11 21:35 Re: 0dB point on DSP speakers [Re: Nstzya]
Registered: 2002-08-28
Posts: 4,272
Mr Meridian Offline
President of the Imperial Galactic Government
Mr Meridian Offline
President of the Imperial Galactic Government

Registered: 2002-08-28
Posts: 4,272
Loc: Perthshire, Scotland
Hi, it's 87 I believe.

Cheers

George

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#273015 - 2018-02-11 21:35 Re: 0dB point on DSP speakers [Re: Nstzya]
Registered: 2004-08-07
Posts: 7,392
Ian Offline
President of the Imperial Galactic Government
Ian Offline
President of the Imperial Galactic Government

Registered: 2004-08-07
Posts: 7,392
Loc: Surrey, England, UK
87


Meridian owner since 1992
DSP5000 96/24, MC200, Prime & PSU, Focal Elear, Explorer 1 & 2, F80, 200/203 and various Sonos.
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#273112 - 2018-02-13 15:16 Re: 0dB point on DSP speakers [Re: Nstzya]
Registered: 2016-10-31
Posts: 56
Nstzya Offline
Mostly harmless
Nstzya Offline
Mostly harmless

Registered: 2016-10-31
Posts: 56
Loc: Indianapolis, USA
Reason for question (more theoretical than anything)... Node 2 streamer has a good digital variable output and eliminates the cumbersome MSR for simple volume adjustment feeding my DSP directly. So I imagine that the “optimum” arrangement would be to set DSP at 0dB and do one attenuation with Bluesound rather than serial attenuations. Let’s assume both have equally good digital attenuation circuits. Or perhaps Bluesound being 25 years newer is (cover your ears)... possibly better?


Bottom: DSP5000/18, 500.2, Bluesound Node 2 (MQA)
On Top: (of DSP5000/18) Martin Logan LX16, Velodyne Optimum 10, Bluesound Powernode 2 (Full MQA)
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#273115 - 2018-02-13 15:43 Re: 0dB point on DSP speakers [Re: Nstzya]
Registered: 2004-08-07
Posts: 7,392
Ian Offline
President of the Imperial Galactic Government
Ian Offline
President of the Imperial Galactic Government

Registered: 2004-08-07
Posts: 7,392
Loc: Surrey, England, UK
Meridian volume is analogue/digital hybrid.


Meridian owner since 1992
DSP5000 96/24, MC200, Prime & PSU, Focal Elear, Explorer 1 & 2, F80, 200/203 and various Sonos.
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#273124 - 2018-02-13 17:13 Re: 0dB point on DSP speakers [Re: Nstzya]
Registered: 2016-10-31
Posts: 56
Nstzya Offline
Mostly harmless
Nstzya Offline
Mostly harmless

Registered: 2016-10-31
Posts: 56
Loc: Indianapolis, USA
Yes, but is that necessarily better? wink. (No ducking emoji) Bluesound are very tight mouthed about their proprietary system, but claim wonders. Trying to see if I can tell a difference, so wanted to eliminate (minimize) the Meridian component.


Bottom: DSP5000/18, 500.2, Bluesound Node 2 (MQA)
On Top: (of DSP5000/18) Martin Logan LX16, Velodyne Optimum 10, Bluesound Powernode 2 (Full MQA)
Top
#273127 - 2018-02-13 17:30 Re: 0dB point on DSP speakers [Re: Nstzya]
Registered: 2000-11-01
Posts: 2,576
RobertW Offline
Robert.W Great Green Arkleseizure
RobertW Offline
Robert.W
Great Green Arkleseizure

Registered: 2000-11-01
Posts: 2,576
Loc: Austria, Europe
Without a communication the DSP can only FOLLOW THE INPUT. As the input is digital, the data of the input signal have to be changed.
But changing data means loss of the resolution in amplitude/volume.
So a typical process is to "upbit" the music to get smaller steps and try to make the failure smaller.

Meridian make a mixture of digital and analogue volume control.
So make a analogue volume control,"simple" the gain of the amps get changed after the D/A conversion and no digital resolution loss appear.
That all above are only rough explanations,

So I would leave your source with 0 dB (full signal) and use the advantages of the Meridian volume control.
The volume control can be done via MSR or via serial RS232 with the Mcommand or - if you have a 218 with the IP-Control app.


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__HB-strip, Ayon/HB/Shunyata/Dream State Audio/Miltzow -- power cables,
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#273128 - 2018-02-13 17:51 Re: 0dB point on DSP speakers [Re: Nstzya]
Registered: 2000-05-28
Posts: 8,668
Fiddler Offline
President of the Imperial Galactic Government
Fiddler Offline
President of the Imperial Galactic Government

Registered: 2000-05-28
Posts: 8,668
Loc: Northeastern, USA
I'm 99% sure it's 99.

87 is just a reference level to calibrate at it and has nothing to do with DSP Speakers at Full Scale.

But with the Volume control on DSP's it gets a little tricky and it might roll off some (low) frequencies at high volume, depending amplitude of the content.

I also agree with Roberts Comments.


- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
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