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tabosko
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Last seen: 8 months 4 days ago
Joined: Jan 15 2021 - 11:14am
Reduce hiss when volume is raised

Hello All,

I have a question that I'm not sure has a solution (Noob) but here we go! I have a Hoffman hifi speaker with a built in tube amp. Or atleast a believe its HIFI.. the manual it came with seems to address a line of speakers from the company rather than THIS particular one. (this is a older speaker from the 80's)

This is a single Large speaker with a 15" speaker and a Mid inside. I have the tube amp hooked to my record player which has a built in pre amp and that feature is on. The amp has 2 inputs for Phono and Tuner and I have the record player plugged into the tuner. I have tried to run the setup with the pre amp off but its too low with it off.

The amp does have hiss control and that has been adjusted but what I am referring too is the hiss that you hear when nothing is playing and the volume is increased past a certain point. I assume the preamp is causing this to be louder but is there anyway I can reduce this noise? Or is that just the norm when dealing with these amps? I was considering gutting out the built in tube amp and replacing it with a newer one but would I see any benefit from doing that?

John Atkinson
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Joined: Nov 7 2010 - 3:31pm
Re: Reduce hiss when volume is raised
tabosko wrote:
what I am referring too is the hiss that you hear when nothing is playing and the volume is increased past a certain point. I assume the preamp is causing this to be louder but is there anyway I can reduce this noise?

Unfortunately, no. This is noise generated in the circuit before the volume control, so the higher you turn up the volume, the louder the hiss becomes.

John Atkinson
Technical Editor, Stereophile

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