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Class D Switching Power Amplifiers and Power D/A conversion

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Old 9th September 2009, 08:20 PM   #81
sailor is offline sailor  Germany
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maximum delay is 1ms = 1000us per chanel.

Reinhard
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Old 10th September 2009, 06:43 AM   #82
thomsva is offline thomsva  Finland
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Originally Posted by sailor View Post
maximum delay is 1ms = 1000us per chanel.

Reinhard
Yes of course! Thank you for the correction.

Actually the lack of delay for the sub channel is a big drawback for me. I would like to set up a system with a single sub between the front speakers. The initial plan was to use a single AS2.100 plus a separate UcD400 amp to do the amplification for the sub. But with the speakers along the front wall the sub channel would have to be delayed ~2ms.

I could use two modules and a dual voicecoil sub but even then 1ms=34cm may not be enough delay to play with.
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Old 14th September 2009, 07:16 AM   #83
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Actually the lack of delay for the sub channel is a big drawback for me. I would like to set up a system with a single sub between the front speakers. The initial plan was to use a single AS2.100 plus a separate UcD400 amp to do the amplification for the sub. But with the speakers along the front wall the sub channel would have to be delayed ~2ms.
The reason we did not implement a delay on the subwoofer channel is that in a normal setup you will not need a delay because the woofer is most likely in front of the mid/tweeter. Every function in the DSP costs some memory space so we chose to use it for other functions.
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Old 14th September 2009, 10:41 AM   #84
thomsva is offline thomsva  Finland
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Originally Posted by Matthijs_Hypex View Post
The reason we did not implement a delay on the subwoofer channel is that in a normal setup you will not need a delay because the woofer is most likely in front of the mid/tweeter.
I agree that the sub is generally closer to the listener than the main channels. But I would think that the speaker closest to the listener would have most need for delay?

I'm now concidering to use another AS2.100 for the sub to get delay. But even then I fear that 1ms may not be enough as the sub would be 50-60cm closer to the listening position than the main speakers.
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Old 16th September 2009, 01:40 AM   #85
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Default US version?

Quick question

Is there a US version? The manual specifies 230v for use in Europe, and the web shop does not indicate a version for 115v for use in the US.

Thanks,

Duc
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Old 16th September 2009, 02:46 AM   #86
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Originally Posted by hoxuanduc View Post
Quick question

Is there a US version? The manual specifies 230v for use in Europe, and the web shop does not indicate a version for 115v for use in the US.

Thanks,

Duc
Just order them, make a note in the order system, and we will ship you a 115V version!

Jan-Peter
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Old 17th September 2009, 11:18 PM   #87
Shaun is offline Shaun  South Africa
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How does the upcoming "High End" version differ from the AS2.100, performance-wise, disregarding features?
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Old 18th September 2009, 06:32 AM   #88
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Originally Posted by Shaun View Post
How does the upcoming "High End" version differ from the AS2.100, performance-wise, disregarding features?
You cannot compare this, the high end version will have a separate DSP and A/D-D/A converters (TI and AKM).

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Jan-Peter
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Old 18th September 2009, 07:18 AM   #89
Shaun is offline Shaun  South Africa
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Originally Posted by Jan-Peter View Post
You cannot compare this, the high end version will have a separate DSP and A/D-D/A converters (TI and AKM).
I do realise that it is a different configuration. What I'm trying to understand is what performance gains will be had from doing this, that differentiates it as being high end? Or, to put it conversely, what precludes the current design from being labelled high end? Is it a question of performance or style?
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Old 18th September 2009, 07:36 AM   #90
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Originally Posted by Shaun View Post
I do realise that it is a different configuration. What I'm trying to understand is what performance gains will be had from doing this, that differentiates it as being high end? Or, to put it conversely, what precludes the current design from being labelled high end? Is it a question of performance or style?
You cannot compare these two products, the AS2.100 is a plate amp 2x100W with a DSP on board. The upcoming high end solution is only a PCB with 2-channel input and max 6-channel output, all symmetrical inputs. You will need separate amplifiers to create your multichannel system.

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