| Re: McIntosh MC-275 Mk IV versus MC-250
The graph in the above post showed how the amplifiers worked in my listening room. The only way I could remove the room from the equation is to use an anechoic chamber, which I don't have. As I have done before, I piled 2" and 4" bass traps (OC-703) around the left speaker to remove as much of the room effect as I could. Here the MC-275 Mk IV really shines, much smoother and flatter curve. 
A good question to ask is how effective my pseudo-anechoic chamber is? I made a measurement with the left speaker (in the chamber) off and only right speaker playing. As expected the low frequencies were not blocked, but it did a terrific job with the high frequency. 
Ron Carlton
Dallas, Texas
Downstairs: oiled Oak Klipschorns, LaScala (rears), oiled Walnut Heresy II (center), oiled Bubinga Heresy I (rears), SVS PB12-Plus/2 piano black, Outlaw 990, McIntosh MA6100, (2) MC250, MC2100, Oppo DV-981HD, Toshiba HD-A2, Cambridge Audio Azur 640C, Belkin Pure AV PF60, Behringer DSP1124P
Upstairs: McIntosh C2200, MC275 MKIV, oiled Walnut Cornwall I, Denon DVD-2200, Technics SL-1200 M3D, Audio Technica AT150MLX, Richard Gray Power Company 400 Pro |