If you were to use a 12CA5/FX5 tube(12.6 V heaters)(Liquid Ss) then usingġ2 volts to power this amp will work best. If a 12 volt supply is used the voltage would need to be reduced to power the 6AQ5 heaters. The E-core transformer has two 12 volt secondary taps and the toroidal transformer has two 15 volt but they can also have 6, 9, or 24 volt taps.īecause the 6AQ5 heaters use 6.3 volts, using 6 volts to power this amp will work best.
6aq5 tube amp kit series#
The two transformers below are rated at 20 VA so either could be used to supply power to this amplifier.Įach has two sets of secondary taps that could be connected in series to double the voltage or connected in parallel and maintain the voltage. Salvaged for an old pair of computer speakers and will work perfectly to supply power to this amplifier.ĪC power adapter that will work perfectly to power the amp. Put the transformer in an enclosure and your done. Neutral (Blue or Black) wires on the power cable and solder the earth to the case. The two red wires are the (240 volt) primary taps, connect them up to the Active (Brown or Red wire) and It's AC so it doesn't matter which tap you connect to the centre pin on the plug. This Transformer is rated to 3 A at 12 volts (36 VA) so can easily supply power to this amplifier.Ĭonnect a 2.5mm plug to the two 12 volt secondary taps of this transformer. The 6AQ5 Datasheet shows the (Load resistance) of 5500Ohms (5.5K), This is very similar to an Output Transformer typical for an EL84 (5K)(5Watts), So an EL84 Output Transformer will work a treat.
(6AQ5 plate and Screen current draw) 34mA is needed.Ī 6.3 or 12.6 volt transformer, rated to at least (heater circuit)
Screen (B+), a transformer, rated to at least (12AX7 plate current draw) 2mA + (bleeder resistor current draw) 0.5 mA + To convert the 6.3 or 12.6 volts to 180 volts to power the tube plates and Operating at 180 volts the 6AQ5 plate will draw (Maximum-Signal Plate current) 30 mA and theĦAQ5 Screen will draw (Maximum-Signal Screen current) 4 mA. The 6AQ5 Datasheet shows operating information for a class A amplifier operating at 180 volts and another Stay cool and handle the load much better. Using an under-rated transformer, the transformer will at best get very MA + (6AQ5 heater filament)450 mA + Led's or bulbs is needed.Īllowing 1000 mA at 6.3 volts, 6.3 volts x 1 A = 6.3 VA is needed. To supply power to the heater circuit, a transformer, rated to at least (12AX7 heater filament)300 It Shows the Maximum Plate Voltage and Dissipation is 250 volts and 12 Watts. The 6AQ5 Datasheet shows the heater current draw The TU-8150 is the little brother to the TU-8200 and allows for both tube and opamp rolling so you can have fun tuning the sound to suit your own listening preferences.Freebird - 2 Watt 6AQ5 Guitar Tube Amplifier - Cathode biased Beam Pentode tube.ĦAQ5 Guitar Tube Amplifier You Tube Video Accessories (Heatsinks, handles, baseplates, back panel kits, riser panels).