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Old 24th April 2007, 06:02 AM   #1
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Default Analogue v digital XOs

It was suggested to me today that comparing analogue v digital XOs is like analogue v digital sources, ie analogue sounds smoother . .

As possible context, this guy has a long broadcasting studio background, who has made or played around with systems including Peerless, the 2nd top Scan tweeters, Aurum Cantus; Bryston, etc he only uses audiophile drivers in hos home.

He implemented his home three way with a passive two way (tweeter & mids), then splits the bass to the sub off with a digital XO. This is even though his digital XO (a dbx driverack) is capable of doing all three. He claims that the (2nd top Scan) tweeter sound smoother that way.

Anyone think that a digital XO can add harshness?

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Old 24th April 2007, 11:18 AM   #2
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or maybe the harshness/ edginess was from the Bryston?
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Old 25th April 2007, 11:05 AM   #3
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Has no one ever compared analogue v digital XOs .

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Old 25th April 2007, 11:18 AM   #4
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analogue has lower distortions!
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Old 25th April 2007, 11:25 AM   #5
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You could well be right, but do you have any epxeiences ir measurments to support this . .

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Old 25th April 2007, 04:46 PM   #6
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The main difference would be with latency. The digital processor has to convert the analogue signal into digital and back. We're talking if mili seconds.

As for the rest there is no sonic difference.

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Old 25th April 2007, 04:57 PM   #7
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Quote:
analogue has lower distortions!
Quote:
The main difference would be with latency.
...
As for the rest there is no sonic difference.
I feel like both of these statements are really short sighted. The two approaches (analog and digital) are fundamentally different.
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Old 25th April 2007, 05:59 PM   #8
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We are talking ACTIVE analogue vs digital crossover right?

What's the fuss ?

Depending on quality of unit there should be no difference.

Just like Analogue 48 track Dolby sync VS Digital 48 track Studer
Recorders.

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Old 25th April 2007, 08:55 PM   #9
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Quote:
Depending on quality of unit there should be no difference.
Well no, not really.

Properly done, digital crossovers are essentially distortion free and have exceptionally low noise. Cascading many digital processes is possible in situations where cascading the same set of analogue processes would result in too much noise and/or distortion.

Digital crossovers are also much more flexible and can do things not possible with analogue circuits. Examples of that are pure time delay and linear-phase filtering.

Badly-implemented digital processing (common in cheap equipment) can have nasty distortion signatures and can sound very bad. But of course the same is true of analogue.

Both types are capable of excellent performance. It just depends on what you want to do.
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Old 25th April 2007, 11:13 PM   #10
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I agree There are lot's of models on the market. If for example you need time alignment , and parametric equalizing . You need
a digital XO. DPS systems are used in cinemas with RTA evrywhere.

If it's for a two way home system a Rane with time alignement analogue can do the trick.

But what I want to Warn you guys against is the cheap ones.

The converter is one of the most important component of these units.

So if you go with Behringer take their top of the line at 300$.

As for DBX ,Klark Teknik ,TC ELECTRONICS AND SYMITRIX . These
are more dependable.


I could go on and on . There are so many different applications.

Cinema, Touring, Disco. Home intertainment.

So to conclude I'll give you in a nut shell the prices range : 20,000$ for a Dolby Cinema Theater Processor to 150$ for a Behringer.

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