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Old 8th April 2007, 02:50 AM   #1
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Default Who ever seen this CLASS-D amplifier

My friend send me his pictures about 2400w CLASS-D, He told me that him bought it from CHINA.

But in CHINA he contact only dealer, Please Chinese member who known this model please suggest me for order and let me know its website.

Regard
Analog guy
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Old 8th April 2007, 02:52 AM   #2
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Question CLASS-D from China or Taiwan ?

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Old 10th April 2007, 12:21 PM   #3
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Smile Who ever seen this CLASS-D amplifier

i think it CLASS-TD but i don't know made in ...
search www.lab.grupen
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Old 10th April 2007, 04:28 PM   #4
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I'm not sure if that is a LabGruppen amp or not. In any case, the URL to check would be http://www.labgruppen.com

two p's in gruppen
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Old 17th April 2007, 04:36 AM   #5
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PowerSoft is well known for 1RU class D amps, although it doesn't look like any PowerSoft I've seen.
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Old 6th May 2007, 02:09 AM   #6
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Talking Who ever seen this CLASS-D amplifier

i see it in thailand!
checking www.tafnaudio.com
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Old 7th October 2007, 04:33 AM   #7
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Default This amplifier is made in Thailand

This amplifier is manufactured in Thailand, designed by my self and the R & D team from the firm TAFN ENGINEERING CO.,LTD

D-TECH 2400 is a highly reliable advanced CLASS-D power amplifier capable of delivering high power over the whole audio band without overheating in a very small size. At the same time it is capable of reproducing sound with outstanding clarity and stability like never before possible with conventional amplifiers.

So far for what i hear, no other PA amplifier of this size and weight can match the power and sound quality.

Many PUBs and Discotheques in Thailand are changing ther systems from reliable class AB amplifiers for this new Class-D model ( D-TECH 2400 ).
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Old 7th October 2007, 05:48 AM   #8
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Default Class D amplifier

I find it interesting that the switchmode supply can only work from 140v to 260v AC.

So in countries that have 100-120v AC mains this amplifier is useless.

Also by the way there are no such things as "watts RMS". It is a non existant term.

Watts are calculated by measuring the volts rms multiplied by the current rms, and therfore RMS X RMS cannot = RMS.

The fact that the square root of 4 x the square root of 4 does NOT equal the square root of 4 but is just 4. There is no root mean square attached the answer of 4.

I would be interested to know how you measure the damping factor )not dumping factor) at 800 and you do not even specigy the load impedance. Damping factor is simply defined as the load impedance divided by the output impedance of the amplifier.

So assuming that 8 ohms was the impedance to which the DF was referred to this means that the output impedance is 10 milli ohms. The output coil will contribute more than this.
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Old 7th October 2007, 01:44 PM   #9
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Quote:
Watts are calculated by measuring the volts rms multiplied by the current rms, and therfore RMS X RMS cannot = RMS.
Not quite.

You are missing the load resistance in your calculation. The power is normally calculated as:

Vrms ^2 / Zload.

So the term Watts RMS is good.
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Old 7th October 2007, 04:04 PM   #10
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Default Supply voltage

This amplifier IS NOT DESIGNED FOR 110V. countries. Is designed to be used in Thailand wich is 220V. and can take voltage fluctuations in that 220V countries. Not in the US.
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