Carr Amplifiers Artemus FAQ
Answers to frequently asked questions about the Artemus.
The General FAQ on the Support page addresses additional questions about tubes, speakers, purchasing a Carr amp, and more.
What tubes are used in the Artemus?
We refer to the tubes and their positions in the amp as V1, V2, etc. for preamp tubes and P1, P2, etc. for power tubes. The number indicates the position of the tube as counted from right to left when looking at the back of the amplifier. The right to left progression follows the circuit from input to output.
| R1 | P4 | P3 | P2 | P1 | V2 | V1 | |
|---|---|---|---|---|---|---|---|
| Type | 5AR4/GZ34 | EL84 | EL84 | EL84 | EL84 | 12AX7 | 12AX7 |
| Manufacturer | Sovtek | Valve Art | Valve Art | Valve Art | Valve Art | China | China |
| Function | Rectifier | 1/4 Push-pull power stage | 1/4 Push-pull power stage, inactive in 15 watt setting | 1/4 Push-pull power stage, inactive in 15 watt setting | 1/4 Push-pull power stage | Phase inverter | Cascode input stage |
The Artemus is a fixed-bias amplifier and requires a bias adjustment any time the EL84
power tubes are replaced. Please use well-matched quads of EL84s. The following power
tube types are compatible with the Artemus: EL84 and 6BQ5. See Biasing Your Artemus
in the
Artemus Owner's Manual
for more information.
Carr Amplifiers selects and tests the finest current production tubes specifically for each amplifier model. Caution should be used when buying replacement tubes from any dealer who does not have a return policy as all tubes can have problems (NOS tubes are susceptible to microphonics and failure too).