Anyone out there heard the 1220 sub(s) with/without the Hsu amp? Are they really any good (at such a low price)? Would appreciate all comments, good or bad. I'm only interested in a sub(s) for music.
i've heard teh older hsu subs, & the newer 1225, tho older w/the hsu amp, the 1225 w/another amp. hsu subs *are* nice, but i prefer my vmps subs. what ever brand ya choose, get a pair for best audio response...
I purchased one of the 1220 Hsu Research amps as part of my Home theater setup. It is matched with sunfire amps and M&K s150 and ss150 speakers. I am extremely pleased with the response that I get. My system is used about 95% for movies but the little music that I do play through it also sounds very nice. This even though the M&K's are not the best musical speakers that you can get. I also went up and met Dr. Hsu at his office and had a chance to speak with him and some of the members of his staff and found them all very friendly and helpful. I have no regrets with my purchase but am thinking of adding another even though this one will shake all of my pictures from the wall when turned up.
The Hsu amps have an equalization circuit in them that boosts peaking at about 19 hz and then cutting off at the low end. Essentially, the Hsu's are detuned a half octave lower than a true fourth order and then the boost brings them to flat down below 20 hz. The nice part of this is that in the range of boost, the port is radiating all the energy while the cone is not moving much (port resonance). Thus, the distortion remains very low
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