C anary a udio ® 300b mono block push-pull parallel power amplifier handcrafted in california ca-309 owner’s manual made in usa.
Dear customer: please allow us to take this opportunity to thank you for purchasing this canary audio product. We strongly recommend that you carefully study the safety instructions before attempting to operate the unit. After you have finished reading the instructions, please save this manual for f...
Safety instructions power source: • the unit should be connected to an ac power source of the proper rated voltage. • never replace the power supply’s line fuse with the one of incorrect characteristics. Ac cord protection: • do not defeat the grounding or polarization feature of the ac cord. • make...
Proper care bias settings: • when replacing the 300b vacuum tubes, you must adjust the bias settings of the amplifier to account for the new tubes. These adjustments best performed by your canary audio dealer as an incorrect bias setting can cause damages to the tube and to the amplifier. Break-in p...
Diagram 1.1 overview of ca-309 v6 v2 v1 v7 v4 v3 v8 v5 installing the tubes be sure the amplifier is off before installing any tubes. Avoid touching the tubes with bare hands to prevent skin oils from depositing on the glass surface of the tubes. Insert each tube in the corresponding socket. Refer t...
Tube biasing bias voltage applied to the grids of the power tubes in the output stage should be checked from time to time to keep these tubes operation at the optimum operating point. A properly biased power tube will have a longer life. To check and adjust the bias voltage of the 300b tubes, simply...
Specifications model: ca-309 rated power output: 45 watts rms input sensitivity: 0.72 volts for full output input impedance: 150,000 ohms frequency response: +/- 1 db from 8 hz to 80,000 hz total harmonic distortion: signal-to-noise ratio: -86 db below 1 watt damping factor: 14 power consumption: 34...
Limited warranty canary audio warrants to the original purchaser that each ca-309 power amplifier is free of manufacturing defects for a period of three (3) years from the date of purchase. To receive this warranty, the original purchaser must complete the enclosed warranty registration card and mai...
