spec ที่หาเจอในเน็ต
(1) 15" woofer
(2) 6.5" low midranges
(2) 4" high midranges
(2) 2.5" horn-type tweeters
Sensitivity = 102db/watt
8 ohm system (6 to 15 range with no loss of efficiency)
Frequency range = 30 - 20,000 (at Anechoic Chamber)
Frequency range = 25 - 20,000 (at Normal Listening room)
Dimensions = 19.25" Wide x 32.6" High x 16.6" Deep
Weight = 90.3 pounds
Finish = Oiled walnut (also with the wood fretwork grilles)
0.01 watts = -42 db
0.02 watts = -39 db
0.04 watts = -36 db
0.07 watts = -33 db
0.15 watts = -30 db
0.29 watts = -27 db
0.59 watts = -24 db
1.17 watts = -21 db
2.34 watts = -18 db
4.69 watts = -15 db
9.38 watts = -12 db
18.75 watts = -9 db
37.5 watts = -6 db
75 watts = -3 db
150 watts = 0 db
300 watts = +3 db
- zero perceptible meter movement (less than 1/100th of 1 watt) = the music is a very perceptible background level, it is quite easy to have a conversation with no special effort. The music does not sound thin or weak. It has good bass quality that is in balance with the volume level.
- 0.01 (1/100th of 1) watt output = it is still easy to carry on a conversation but music is much more noticeable
- 0.1 (1/10th of 1) watt output = the music is very present, but conversation is not a real problem.
- 1 watt output = the music is loud, conversation requires more force and more focused toward the listener.
- 10 watts output = is very loud, conversation is much more difficult and requires real effort to be heard.
- 50 to 100 watts = the music is VERY loud, our old style windows rattle considerably, conversation is very difficult and requires semi-shouting.
- 100 to 150 watts output = THUNDEROUS volume, powerful bass notes vibrate the pants on my legs, it is impossible to have a conversation without face to face shouting. I can feel the house shaking and can only imagine how loud it is in the neighborhood. Sometime when enough neighbors are gone, I will try this long enough to to go out and walk around the neighborhood just for shits and grins...
- 150 to 300 watts output = Noticeably higher volume than THUNDEROUS, but I can't hold this at an average level because the SPEC-4's protection circuits kick in. The speakers seem to handle it just fine before amp cuts out. At that sound level, it is difficult to judge quality, distortion, etc, but I did not notice any extreme harshness or speaker breakup, etc.
