Structure de l'Ampli Altec Lansing 9444B

(9444A sorti en 1988, 9444B sorti en 1992)

Bonjour

au refroidisseur, donc sans isolation.

Difficile de trouver des commentaires, on en trouve en anglais :

This design allows the transistor cases to be connected to the heat sink without using transistor insulators. It buys them a little extra cooling ability. In this case, they move the speaker connections between the signal / chassis common (ground) and the common point between the main power supply filter capacitors and float these power supplies. It ends up doing the same thing the normal construction does.

If you look at the layout, you will NOT see the two sides of the P-P totem coming together and then going to the coupler caps. INSTEAD..and this is REALLY strange. (...) I've seen similar topology on QSC P.A. amps. The advantage is, you can bolt the collectors of the TO-3 power transistors without insulation directly to the heatsinks.

Quelqu'un connait ce genre de structure ?

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specifications 9444b