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In the Forum: Audio Discussions
In the Thread: Small SET’s bass, besides everything- is it about power?
Post Subject: SET and bassPosted by drdna on: 1/12/2009
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 Romy the Cat wrote:
I did not have any low-power DHT but now what I do and when I drive 93dB sensitive speaker with it I have the very same ugly midbass that I experienced with countless setups of other people. I think it is a pattern. Also, regardless how good or bad the Sun Audio’s Tamura output transformer but I think that 150Hz-50Hz is still the region where they operate, I did not measured where Tamura begin to die, but I will.
It is a very old idea to say that higher power is required for good bass response. I do not think you will get any argument from anyone that increased power makes finding solutions to achieve a good bass response easier.

I agree that the output transformer is critical. If a low power DHT is to be used in such a DSET configuration, then the circuit must be optimized for the desired frequency response. It is the weakness of the DHT that the limitations of any full range amplifier circuit are revealed by low power output.

Is bass response the single most important thing? Some people think so, but I do not. There is a different goal with the Lowther type system, namely the single point source, and part of the trade off is the frequency response. There is no question about it. However, it is a valid goal, and many have traded in their horn systems for Lowther type systems who focus on this different objective.

Adrian

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