Is this Class D amplifier powered by an SMPS?

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treez

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Hello,

The Amplifier Head unit that you see from 10 seconds onward (sitting on top of the speaker) on this video weighs 22 pounds, and is 100W (it contains a Class D amplifier...but is it likely to contain an SMPS or a mains transformer to supply the Class D amplifier?

https://www.youtube.com/watch?v=_X2pDxPrxDc&feature=related

Its a Blackstar ID:100TVP amplifier for guitar.

**broken link removed**
 

Maybe you can post this also in the comment field of the youtube video. If there is an smps inside, the electronics (that is power supply with class D amp) should be well below 22 pounds (4 pounds?) What you don't know is the weight of the casing and other provisions to make it a rugged PA.
 
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Hello treez,

I think it's a normal analog transistor amp with BJT or Mosfets and some sound processors inside.

Regards

Rainer
 
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rfredel:
When you say "normal transistor amp" do you mean "Class D" amplifier?
...this amplifier is rich in features, and i think that this needs a class d amplifier....not just any normal class AB type amplifier?
 

I see no reason for the need of a class D final amplifier to get rich features. features such as emulating certain valve behavior is done at small signal level. If you made your "class D" assumption on rich features, I would recommend you to reconsider your assumption.
 
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Hello treez,

I have ask the distributor here in Germany. It is a normal Class "B" amplifier. All features are made by a soundprocessor. With a little bit work you can change the final amp to class "AB" with a loss of power.

Class "D" amps will be use, if you need high power with low supply voltage, like car amps or for PA. It works with PWM and needs a filter network in the output. If this will works real good, the network is not easy to create.

Regards

Rainer
 
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