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Bh Amps D542H

Translating from the manual I get this:

SHAPE S1 / S2: with the selector set to ON, 400Hz (S1) and 1000Hz (S2) are attenuated by about 8dB, emphasizing the extremes of the band. To not take advantage of these passive filters, set the selector to OFF.

CONTOUR LO / HI: with the selector on Boost, 40Hz by + 3dB (LO) and 8kHz by + 6dB (HI) are emphasized. With the selector on Cut, the 40Hz by -3dB (LO) and the 8kHz by -6dB (HI) are attenuated. To not take advantage of these passive filters, set the selector to OFF.
Informative, but also confusing. It does not seem that the Contours are passive, since they can boost at certain frequencies. So the last sentence is confusing, or in all probability just wrong.
 
Interesting. There's a sample of how the 3 "amp voice" sound on the product page, but I'd like to hear it for real, and/or read more detailed explanations, and/or read feedback from customers. They say you can use it to adapt the amp to your cabs, and that it changes the tone, I find it a bit confusing.
If I had to guess, it’ll change how the amp behaves. Similar to the Mesa WD-800 with its Damping control ie “Low” is more tube amp feel and “High” is more solid state feel. I could be wrong, but just my highly uneducated guess.
 
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Reactions: gtirard
Hello, I'm one of the designers of the Drone D542H head. I would like to clarify your doubts. Both SHAPE and CONTOUR switches are completely passive. When we talk about gain we mean the OFF position, where the whole audio band is attenuated by a certain number of dB. In the BOOST positions the reduction of dB is less so there is a gain compared to the OFF position. In the case of the SWITCH VOICE, there is a Limiter set to let out the three different maximum powers: 500W / 400W / 200W, useful for not distorting the power amplifier and safely using even lower power speakers without risk. This choice, in addition to reducing the maximum power delivered, compresses the signal more and produces a different and dirtier sound.
 
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Reactions: gillento
@Tidalrace Since you are a new commercial user, please read the commercial user and update your profile so that you comply with the commercial user policy (CUP)

and welcome.
 

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