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#269615 - 2017-11-09 11:14 Mixing 24/96 and 18bit DSP speakers
Registered: 2017-10-21
Posts: 9
Flagooner Offline
Harmless
Flagooner Offline
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Registered: 2017-10-21
Posts: 9
Loc: United Kingdom
Hi can anyone advise me please.
Can I set up a stereo pair of DSP5000C speakers if one is 24/96 and the other 18bit, would I encounter any problems?
Any help would be much appreciated, thank you.

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#269616 - 2017-11-09 11:15 Re: Mixing 24/96 and 18bit DSP speakers [Re: Flagooner]
Registered: 2010-12-09
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Ratbert Offline
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Ratbert Offline
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What are you connecting them to? They should work but I believe both will run as 18bit.


.
Edited by Ratbert; 2017-11-09 11:16.
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#269617 - 2017-11-09 11:20 Re: Mixing 24/96 and 18bit DSP speakers [Re: Ratbert]
Registered: 2017-10-21
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Flagooner Offline
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Connecting to TV digital stereo signal.

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#269623 - 2017-11-09 11:54 Re: Mixing 24/96 and 18bit DSP speakers [Re: Flagooner]
Registered: 2008-10-11
Posts: 213
Tarik Offline
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Tarik Offline
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Registered: 2008-10-11
Posts: 213
Loc: Gloucestershire, UK
They will both work so long as the signal from the TV is limited to a maximum rate of 48KHz.

22 bits is the maximum a DSP loudspeaker with 18-bit DACs can accept on their digital inputs. [Ref 518 manual Page 11]

Depending on the firmware version of the 24/96 speaker you may get a strange effect as firmware v5.11 unified latency to 7.5ms. Not sure whether it would be 7.5ms in the 18 bit speaker but suspect not.


Lounge: DSP5000 24/96, 518, C61R

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#269624 - 2017-11-09 12:24 Re: Mixing 24/96 and 18bit DSP speakers [Re: Tarik]
Registered: 2017-10-21
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Flagooner Offline
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Hi Tarik,
Thank you for your reply.
What do you mean by strange effect?
I have the 24/96 running at the moment and it sounds fine and to be quite honest I don't find any missing instruments with one speaker unless I play an upgraded mono recording such as old fifties music.

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#269625 - 2017-11-09 12:39 Re: Mixing 24/96 and 18bit DSP speakers [Re: Flagooner]
Registered: 2008-10-11
Posts: 213
Tarik Offline
Hitchhiker
Tarik Offline
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Registered: 2008-10-11
Posts: 213
Loc: Gloucestershire, UK
I am speculating and others more knowledgeable than me will be along in due course, but....

Think of latency as the delay between the signal being presented on the input of the speaker and the sound coming out. If the latency of the speakers is different when the signal is presented on both inputs at the same time, it would come out as sound at different times, albeit a few milliseconds apart, on each speaker. I assume this would have an impact on staging and stereo imaging.

Effectively you have created a stereo pair which are very slightly different.


Lounge: DSP5000 24/96, 518, C61R

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#269630 - 2017-11-09 15:01 Re: Mixing 24/96 and 18bit DSP speakers [Re: Tarik]
Registered: 2004-01-04
Posts: 1,758
gIzzE Offline
Knows where his towel is
gIzzE Offline
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Registered: 2004-01-04
Posts: 1,758
Loc: Norwich, UK
7.5ms is roughly 2.5m in distance, in other words, the speaker with the delay would sound like it is 2.5m further away from you than it actually is.


No Darling, I've had it months!
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#269632 - 2017-11-09 15:09 Re: Mixing 24/96 and 18bit DSP speakers [Re: Tarik]
Registered: 2017-10-21
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Flagooner Offline
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Posts: 9
Loc: United Kingdom
I suppose also that the master speaker, which gets the sound first, will not wait until the slave has the signal in perfect timing. So both speakers are never perfectly synced?

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#269633 - 2017-11-09 15:25 Re: Mixing 24/96 and 18bit DSP speakers [Re: Flagooner]
Registered: 2000-11-01
Posts: 2,508
RobertW Offline
Robert.W Senior Shouting Officer
RobertW Offline
Robert.W
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Registered: 2000-11-01
Posts: 2,508
Loc: Austria, Europe
That "latency time" is only relevant on the front speakers and only then, when you have both types 24/96 and 18bit at the fronts like L 96/24 and R 18 bit.

But it's easy to compensate with a Meridian Processer.
You just delay the 18 bit speaker some ms (milliseconds) as calculated for you in the post before.
So the 18 bit DSP needs a subtraction from the real physical distance (then the speaker get delayed) or
the 96/24 an addition to the real physical distance or a mix of both methods if you like.

Important is only that you add 2.5m so both speakers play at the same time.
If you have a C speaker, follow that logic or just post here more details about your application, like stereo or MCh and the current physical distances.
And which speaker is where placed of course.

Add a signature so we don't have to ask so much and can be support you faster and easier.


861v6+ID40/800v3/3x8k.2/3x5k5s smile /2x5kC/ 218/Explorer/TT-ELP/Trinnov Amethyst
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#269634 - 2017-11-09 15:42 Re: Mixing 24/96 and 18bit DSP speakers [Re: RobertW]
Registered: 2001-05-23
Posts: 2,587
Gianni Offline
Great Green Arkleseizure
Gianni Offline
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Registered: 2001-05-23
Posts: 2,587
Loc: North London, United Kingdom
RobertW is absolutely correct but his approach demands that a processor is involved. I believe we are considering a simple two channel system with a single stereo source? And, if memory serves, the two speakers are an 18-bit DSP5000C and a putative 24/96 DSP5000C?


Various DSP speakers and Meridian processors
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#269649 - 2017-11-09 22:05 Re: Mixing 24/96 and 18bit DSP speakers [Re: Gianni]
Registered: 2000-11-01
Posts: 2,508
RobertW Offline
Robert.W Senior Shouting Officer
RobertW Offline
Robert.W
Senior Shouting Officer

Registered: 2000-11-01
Posts: 2,508
Loc: Austria, Europe
Reread the original post, I only find "logic" that a processor have to be included if there a center speaker exist.
So MAYBE, the center speaker is different to the main or L/R speakers.
So the time differences change the deepness of the stage, but 7.5 ms is to much to much in my understanding.
But with a processor it’s not a problem to compensate that.

Speculating a pure 2 channel system and have two different main speakers, a time difference means mainly a balance shift. So without a processor there are only two ways to compensate that:
1) Change the physical distance..
2) insert electronic that can delay a digital stream

So 1) sounds unpracticable for me and 2) could be done, but what the overall best solution here?
So I would either not buy the speaker, or search for a cheap speaker upgrade when this is available somewhere, or much better to use a cheap processor like the 565 or the 568.

But a correct signature will help here, at least me.


861v6+ID40/800v3/3x8k.2/3x5k5s smile /2x5kC/ 218/Explorer/TT-ELP/Trinnov Amethyst
__HB-strip, Ayon/HB/Shunyata/Dream State Audio/Miltzow -- power cables,
__Ayon/Jungson/Miltzow --analog, Miltzow-- digital,
__WMA/Finalizer- , iPad air, Macbook-pro.
Reviver
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