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Old 19th August 2011, 10:53 AM   #1
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Default Wish to buy Guitar Amplifier

Hello,

I am wondering where i can buy a Guitar Amplifier of the following specification:-

Mains input of 90VAC-265VAC (we travel widely)

Must use Class D audio amplifier

Power Level of 330W Maximum.


Do you know of a vendor and part number for this?
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Old 20th August 2011, 05:34 PM   #2
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What about class D speaker cabs? They will be huge and heavy, even if you fit the amp into pocket of your jacket.
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Old 21st August 2011, 06:13 AM   #3
Enzo is offline Enzo  United States
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Other than the universal mains specification, how did you arrive at the other requirements?

For example, why must it be class D circuitry? Especially since it is a guitar amp?

And how did we come to the odd amout 330 watts for output?
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Old 21st August 2011, 08:49 PM   #4
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Hi,

We want Class D because its less weighty than eg Class A, even if the cabs are still huge.

We have been practising on Class D and want to keep it that way because we have the amplifiers that use class D that have nice effects for us....can download sounds from web etc.....class a or ab type dont have these effects.

330W is a nice power for the type of venues we play.
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Old 21st August 2011, 09:23 PM   #5
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It sounds like a total nonsense, about classes of power stages and effects. They are absolutely unrelated.

Class D means output stage of the amp is working in pulse - modulating mode, so output devices dissipate very low power since they always either on (very low voltage) or off (very low current). It saves power, and don't require such cooling as in case of other modes of output stages. That's why power amps with class D outputs are lighter: they don't need big and heavy heatsinks.

But heatsinks have absolutely nothing to do with effects, be they analog, or digital downloadable from anywhere.
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Old 21st August 2011, 09:34 PM   #6
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by Wavebourn View Post
It sounds like a total nonsense, about classes of power stages and effects. They are absolutely unrelated.
yeah, unless it means that 'they' take it to the limit, and get max power with a severely under dimensioned design

if so I guess its easy to imagine some lack of power, or 'wimpy sound'

or are you suggesting that 100watt is 100watt, no matter what


but I guess you want to say that classD can be as powerful as anything, if done properly
but is it
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Old 21st August 2011, 10:02 PM   #7
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Quote:
Originally Posted by tinitus View Post
yeah, unless it means that 'they' take it to the limit, and get max power with a severely under dimensioned design
Yeah, but if you read what eem2am means, it is totally different.

Overload of power stages (tubes, transformers) is used for "guitar effects", while clipping of class D amp can cause only such an effect as fried speakers.

Here it is, again:

Quote:
We have been practising on Class D and want to keep it that way because we have the amplifiers that use class D that have nice effects for us....can download sounds from web etc.....class a or ab type dont have these effects.
You see? Presence of DSP in the amp is not related to class of output stage. However, if guitar amp uses class D output it has no "effects" except speaker-frying, so in order to be usable for guitar it reauires some effect box built into it. But the same effect box can be built into any amp regardless of the class of it's output stage.
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Old 21st August 2011, 10:05 PM   #8
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330 guitar watts is total overkill.. are you playing stadiums?
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Old 21st August 2011, 10:07 PM   #9
tinitus is offline tinitus  Europe
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ah, ok, thanks for the update

well, there are plenty of guitar effect units
seems like its a huge market
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Old 21st August 2011, 10:56 PM   #10
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i didnt explain it right.

i meant that the new type of guitar amplifiers, that yuo can PC interface , only contain class d amplifiers.

they could contain class a if they wanted ....but the manufs dont do it with class a , so we stuck with class d
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