manisandher Posted June 21, 2019 Share Posted June 21, 2019 Can someone help me out with a calculation? The specs of my mono amps are: - maximum unclipped output +/-20 Volts - noise ~60 uV unweighted, 20-20 KHz Would SNR = log(20/0.000006)*10? That gives me ~65dB, which doesn't seem right - the amps seem much quieter to me. (Edit: the distortion spectrum in the manual shows the noise floor sitting at -135 dB below the 1 watt 1 kHz signal.) Mani. Main: SOtM sMS-200 -> Okto dac8PRO -> 6x Neurochrome 286 mono amps -> Tune Audio Anima horns + 2x Rotel RB-1590 amps -> 4 subs Home Office: SOtM sMS-200 -> MOTU UltraLite-mk5 -> 6x Neurochrome 286 mono amps -> Impulse H2 speakers Vinyl: Technics SP10 / London (Decca) Reference -> Trafomatic Luna -> RME ADI-2 Pro Link to comment
manisandher Posted June 21, 2019 Share Posted June 21, 2019 15 minutes ago, esldude said: I'll assume that is peak to peak. So 28 volts rms. You should use 20 instead of 10 in your calculations for voltage. You'll get a touch over 113 db. Spectrum views are deceptive because FFT will lower the view of the noise floor. You'd need to know FFT size to judge from that. Thanks Dennis - much appreciated. Mani. Main: SOtM sMS-200 -> Okto dac8PRO -> 6x Neurochrome 286 mono amps -> Tune Audio Anima horns + 2x Rotel RB-1590 amps -> 4 subs Home Office: SOtM sMS-200 -> MOTU UltraLite-mk5 -> 6x Neurochrome 286 mono amps -> Impulse H2 speakers Vinyl: Technics SP10 / London (Decca) Reference -> Trafomatic Luna -> RME ADI-2 Pro Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now