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An internal specification is almost the same as SE400S.
In order to use it, inserting in a speaker cabinet, a shelf, etc., it mainly has a structure without a cover.
The surface panel serves as a design as which the radiator of the transistor also served.
The scheme called Energizer is adopted.
A printed-wiring board is in the interior by this scheme, and it is this substrate,several kinds of circuitries are prepared according to the speaker system of JBL, and it has also become an equalizer with which a dumping factor a model number -- also controls the frequency characteristic including power amplifier and a loudspeaker in an ideal property by reputting.
The slot which inserts SE408 in an enclosure backplane is established in some loudspeakers of JBL.
| Form | Stereo power amplifier |
| Effective output | 40W+40W (8ohms) |
| Frequency band | 3Hz - 20000Hz |
| Input sensitivity | 0.8-3V |
| S/N ratio | 90dB |
| THD | 0.15%(40W) |
| Dumping factor | 27 (8ohms) |
| The semiconductor used | Transistor: 22 pieces Diode: 20 pieces |
| Dimensions | Width 378x height 110x depth of 160mm |
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