HA3FTV HUNGARY zone:15 ITU28
Home Made OTL amplifier with Tubes ! ( 4 x PL500)
Power: 2 x 125 Volt on 2 x 800 Ohm cca: 2 x 15 watt.
( ideal for driving PIEZO tweeter )
The electric diagram on the internet
The Box. Old Style design!
The bottom of the box.
Built inside the box. the circuit is made with a conventional technique.
Driver Tubes: 2 x ECC81 ; Final Pentode: 4 x PL500
The amplifier is ready to go into the 19-inch rack cabinet and jump
OTL is in place, waiting for a mission