Forum Overview :: No Stairway to Heaven :: I must defend by faggotry!

[quote name="The Happiness Engine"][quote name="Ray of Light"]Your math is bad though, 93dB @1W means 103dB @10W, 113dB @100W, 123dB @1000W. However, I will be listening from distances of more than 1m (consequences unclear -- SPL falls off cubically in the absence of echo, but this will be in a room with smooth walls). However however, I will be listening to <i>two</i> speakers. Let's just assume these cancel each other out.[/quote] dB SPL is 20 log (P1/P2), dB Everything-fucking-else is 10 log. SPL drops by 6dB each doubling of distance in a free-field, which your room is not. Good catch on the 2 speakers, size of room, etc stuff. Figuring SPL like this is basically just a way to say, "If it's this loud HERE, then for my application..." unless you design speaker rigs for a living. [quote]Using this dB thermometer, I'd guess I want to be around 85-90dB most of the time and would like to be able to get above 100 (but not much, you never get any hearing back!), with some headroom left over for loud passages.[/quote] It's useful to be able to get the room to 100-110 everywhere, if you're having a party or want a movie to have extra drama. That way when you turn it down everything stays nice and quiet and cool, rather than turning it up and just getting clipping and a blown fuse. [quote]I ended up buying a <a href="http://www.parts-express.com/pe/pshowdetl.cfm?&Partnumber=300-383">Dayton DTA-100</a> from Parts Express, for about $150 after shipping and currency conversion. 50Wpc into 8ohm, tiny aluminum box, separate phones-level and line-level inputs (but no selector switch, I assume the front panel input mutes the RCAs). It's based on another Triforce chip, the TK2050, and cost about the same as a TAMP-20 from HLLY, except shipped from the US instead of China.[/quote] I'd take the power rating with a bit of salt. Amplifiers aren't magically more efficient than computer supplies. If something has a tiny line-lump transformer then it can only put out %50-90 of what that's taking in. That said I think you'll be more than happy with this.[/quote]