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> Power Attenuator, How much will it lower the volume?
Xuestor
post Feb 29 2008, 06:40 PM
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Hey!

I'm thinking of buying a power attenuator, and just wondering how much it really lowers the volume?

For instance, will it be able to handle a cranked 100w tube head and give the volume level of a, say, 10-15w tube amp?

And whats the recommended models/brand etc?

Will I be able to get something for less than 300 USD? Or 2000 SEK?


EDIT: I see there are different ohm levels of the attenuators, is this the level of noisereduction, or is this just a figure that should be matched with the cab?

This post has been edited by Xuestor: Feb 29 2008, 06:42 PM


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Melvyn
post Mar 1 2008, 02:24 AM
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The ohmic quantity is to do with the voltage and current used by the attenuator, its got nothing todo with noise or music or anything, its something to do with Electricity, and i suppose it doesnt really matter if the ohm levels are different, i mean i doubt everything thats running in and to your amp has the exact same ohmic qualities

I cant really help you when it comes to the actual attenuators, just thought that would help



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fatb0t
post Mar 1 2008, 02:34 AM
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Hm, I don't know much about them. I was thinking about getting one myself, any gear experts here?
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Ivan Milenkovic
post Mar 1 2008, 04:29 PM
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I think maybe Andrew can answer this... He built his own amp, so I guess he knows a lot about this kind of stuff. smile.gif


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Xethman
post Mar 1 2008, 05:34 PM
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You have to get the attenuator with an ohms rating matched to your amp, this is why they sell several versions of the same unit (THD hotplate).

This requirement is for proper loading of your amplifier; screw it up and you can damage your amp.

Ohms will affect how loud your amp is... but I suspect not in the way you may be thinking, so put that out of the equation and think of proper amp loading only.

Study watts, decibels etc to better understand how they relate to sound intensities and perceived loudness. Again, I suspect that the reality is different that what you may be thinking.

This post has been edited by Xethman: Mar 1 2008, 05:35 PM
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USAMAN
post Mar 1 2008, 05:44 PM
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I have tried out 2 different models.
1.THD hotplate=tone sucker
2. DR.Z= tone sucker

Not impressed by these units at all. I think (IMHO) a lot of tone is lost by not moving the volume of air that speakers do at higher volume. Tubes being run hot make some difference but dont discount what the speakers are doing.
They will take away volume from your rig but alot more as well.


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Xethman
post Mar 2 2008, 07:21 AM
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Yes USAMAN... people expect these units to make their amps sound the same as a cranked amp. They just don't. People should be realistic and expect an improvement in sound, due to tube saturation, but not the same sound as their amp cranked. Part of the reason I bought an ENGL was because they sound good at low volumes, and thus a power attenuator was not needed.
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KloCkWorXx
post Mar 2 2008, 07:38 AM
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bias your tubes really hot will give u better sound at lower levels, but expect to change your power tubes often..


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