a question i need help with please...........thanks :)

jonesyj · Joined: Nov 27, 2004 Posts: 2 Location: usa

the question is:

If we are not to exceed the maximum input to the studio topaz desk we must not input a singal greater than 4dBu.The input to this professional desk is fed from a semi-professional preamp that is rated in dBV.
i wish to set the level of the preamp to effect the maximum gain.If i input a signal from an SM58 with max amplitude of 3mV,then what is the gain setting (in dBV) for the pre-amp

can somebody show me the working out to this question please,as i have been handed it for a portfolio but i dont understand any of this.

thanks guys

mosc · Posted: Sat Nov 27, 2004 9:25 am Post subject:

glad to have you here.

I deleted you duplicate post in the Schmooze forum. We don't like cross posting here.

Yours is a very good question. I'm not personally qualified to anwer it. I hope someone who can chimes in. I'm a seat-of-the-pants engineer. I just adjust the levels until things sound right. I know there are people that are very big into calibration, but I've personally never seen the need for this.

jksuperstar · Posted: Mon Nov 29, 2004 1:15 pm Post subject:

Maybe this could help you:

http://www.sengpielaudio.com/calculator-db-volt.htm

betty182 · Joined: Jan 10, 2005 Posts: 31 Location: uk

Do you have an email adress? i could answer this simple question veryeasily, but i would just send it via email, so that i could help more.