Which does limit their flexibility.
9 responses Add your response
Why Kenny? If my math is correct wouldn't 0.6mv with 62dB gain only be 0.75v? Isn't line source 2.0v? Wouldn't a 1.5mv cart be 2.0v after 62dB of gain? It always seemed that phono stages needed more gain to me. Else don't you have to relay on your linestage to provide a bunch of gain?
dB gain = 20 * log (V1/V0)
10^(dB gain/20) = V1/V0
I have a Hagerman Bugle with 40dB gain and a dynavector 20x-h with 2.5mv output, and I'm considering changing the gain to 50 or 60dB with a resistor change.
I don't believe the issue is gain, but rather overload. The 1.5mV cart would probably overdrive the inputs (or second stage) when set to high gain. If opamp-based circuit, will likely be hard clipping, which is pretty easy to hear. Once signal is past EQ then you can add more gain without saturation.
The Hagerman Bugle can handle the 2.5mV at 50dB, but not at 60dB. It's best to run minimum gain for maximum headroom. Also true with linestages; attenuators sound best when not used.
Well I guess I need a new linestage, amp, or speakers. Because I always seem to run out of gain when playing vinyl on my system. :-( I don't have that problem with CDs, but my DAC has 3.5V output. So that got me to thinking what increasing my phono output would be the ticket. Maybe I need more efficient and sensitive tube gear with more gain?