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Old 11th April 2011, 03:33 AM   #121
lithoc is offline lithoc  Malaysia
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Quote:
Originally Posted by authlxl View Post
ok!we use BESSEL 24dB Filter for Low cut,Sub Boost (center frequency)15dB

Thanks
Hi,

Can you explain the "low cut" frequency function?

Does it mean 70hz is high pass filter for stereo only channel or crossover point for stereo & bass channel?

Is Bass freq knob control the low pass filter frequency or Center frequency?



Thank you
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Old 11th April 2011, 09:59 AM   #122
authlxl is offline authlxl  China
SINEWAVE ELECTRONICS CO.,LTD
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Low cut function is useful,Usually find it in pro audio system,when speech or other conditions,air flow sound will influence sound articulation,so this function can improve the sound quality.

Last edited by authlxl; 11th April 2011 at 10:01 AM.
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Old 13th April 2011, 12:25 PM   #123
authlxl is offline authlxl  China
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We have revised the panel and circuit.it will finish this month.
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Old 13th April 2011, 01:12 PM   #124
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It would be great to have a "bi-amplification" board too...

It could drive speakers without the need of an external passive crossover !

Of course, we do need 6 outs (lows, mids, highs for left and right).

It would be also great to have a software that can sets the digital xover for optimal DRC (Digital Room Correction)

Last edited by forart.eu; 13th April 2011 at 01:15 PM.
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Old 14th April 2011, 07:10 AM   #125
lithoc is offline lithoc  Malaysia
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@forart : Bi-amp usually are fullrange.
Active X-over (low,high) is a better approach.


@authlxl : Can we configure/program the DSP ourself?
Since it's a DIY forum. I believe many forum member here would like to DIY it them self

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Old 14th April 2011, 07:56 AM   #126
authlxl is offline authlxl  China
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OK!it is really worthwhile things to make Sigma Studio Graphic view,we think everyone who know audio signal flow can do it,a bit complex for some parameters setting,we will send some sample files of it in our supporting CD-ROM.of course include Sigma Studio software.

But one thing attention,you have to buy one USBI download line from ADI,or we can help you burn eerom chip.
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Old 16th April 2011, 07:35 AM   #127
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Sorry, i mean MULTI-amplification (lows, mids, higs) !

About software: it would be great to have open source tools, to let non-Windows users to manipulate the amp too.
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Old 17th April 2011, 03:18 PM   #128
lithoc is offline lithoc  Malaysia
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Any estimated price for this unit?
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Old 17th April 2011, 04:25 PM   #129
authlxl is offline authlxl  China
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Quote:
Originally Posted by lithoc View Post
Any estimated price for this unit?
Thanks reply!we have calculated the cost,diyaudio member retail price about 239.00USD. Wholesale price(over 5set) will lower.


Case are in processing ,the first batch board have burn-in for a long time.works well.now all the sample Sigma program files are in testing now.
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Old 21st May 2011, 03:11 AM   #130
authlxl is offline authlxl  China
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Default TAS5630 toroidal core working temperature decreased

Normally T72-2 or T72-8 Iron powder core were fitted in our TAS5630 board,a bit hot when working.

We discussed with our magnetic factory days ago,now developed new type core for it.finally temperature can not exceed 40℃ even full loader (19A pause current)or long time working。

.V20 board use higher frequency SMPS IC ,higher power out.
.Auto Reset /over temperature protect/over current protect
.Variable Fan Speed Controller inside.
Attached Images
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Last edited by authlxl; 21st May 2011 at 03:21 AM. Reason: add pic
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