Gain Question


I may not understand what is going on with my vinyl setup.

The chain goes as follows -

Ortofon Per Windfeld Cart .3 mv output
Herron VTPH-2 phono stage 66 db of gain
Cary SLP05 preamp 10 db of gain.

Sound is great but in order to be at a moderate listening volume, the volume nob on the Cary pre must be almost maxxed out. How can I fix this?
markus1299
You can either get a cartridge with higher output, get a phono stage with more gain, or get a preamp with more gain OR some combination of the above.
Actually, there are two other options, get more sensitive speakers and/or get a more sensitive amplifier(s).

That's the only options I can think of for you to 'fix' this.

Cheers,
John
66db corresponds to a voltage gain of about 2000. 10db corresponds to a voltage gain of about 3.2. So 0.3mv from the cartridge will result in about 0.3 x 2000 x 3.2 = 1.9 volts into your power amp. That is roughly in the general area of input voltage that most power amps require to reach full power.

Speaker efficiency is also obviously a factor in all of this.

Those numbers reflect the volume control being set all the way up, so what you are finding is understandable and probably can't be fixed without a component change, or the addition of a component between preamp and power amp that would provide additional gain. Unless you are presently connecting preamp to power amp unbalanced, in which case a balanced connection may provide more overall gain. But looking at your system description I suspect that you are already connected balanced.

Regards,
-- Al
Almarg,

I really hate to do this but what about using a step up. Any experince doing this? I see an Ear step up for sale here and I'm considering it. I just hate to introduce a whole nuther device with it's connecting cables ETC. What are your thoughts? Thanks for your response.