PrimaLuna© ProLogue Eight

Troubleshooting

No output. Power is on, but power LED is off and tubes do not light up. Mains fuse is out. Replace fuse per instructions on page 9.

No output. Power LED is on and tubes do light up normally.

The CD player stays muted for 30 seconds when powered on. Check to make sure all interconnects are securely connected. If all seems to be OK check other equipment in use.

Remote control does not respond.

Batteries are low and have to be replaced. Strong (sun)light may also disturb

the remote control signal. Make sure there are obstacles between remote control and CD player.

Noise coming from one channel.

Noisy tube. First swap the 12AX7 tubes left to right. If noise follows tube swap, than you have found the problem tube. If noise does not follow, swap the 12AU7 tubes left to right. If noise still persists, contact your dealer.

Hum coming from one channel.

Check 5AR4 tubes to make sure they are seated properly. Swap L to R , If hum follows tube then replace faulty tube.

Noise/distortion coming from both channels.

Tubes may be in need of replacement. Read page 9 for tube basics and replacement options.

Please also check the other equipment in use for failure or improper connections.

If you try these possible solutions and problems persist, contact your local distributor for further investigation.

Tube Selection

While matched tubes are not a requirement, they’re still recommended if you want to get superior results. You can get the very best in replacement tubes as well as rare vintage NOS (New Old Stock) from us and other parties if you wish to upgrade. In the USA, Upscale Audio’s inventory of New Old Stock tubes is the largest you can find. Elsewhere, indepen- dent suppliers can assist you in making the best choice

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PrimaLuna USA pmn manual Troubleshooting
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pmn specifications

PrimaLuna USA is a distinguished brand in the world of high-fidelity audio equipment, known primarily for its innovative tube amplifiers and integrated amplifiers. Founded with a commitment to delivering exceptional sound quality and performance, PrimaLuna has carved out a niche among audiophiles, blending sophisticated design with cutting-edge technology.

One of the standout features of PrimaLuna products is their use of premium vacuum tubes. These tubes are revered for their warm, rich sound and ability to enhance the listening experience. PrimaLuna employs custom-made transformers which are crucial in achieving the low distortion and high efficiency these amplifiers are known for. Their products not only deliver exceptional audio quality but are also designed to operate reliably over long periods, with minimal maintenance.

Among the trademark technologies is the Adaptive AutoBias system. This unique feature allows users to change tubes easily without the need for manual bias adjustments. The amplifier automatically adjusts to the new tubes, maintaining optimal performance and sound quality. This technology embodies PrimaLuna's philosophy of user-friendliness combined with superior engineering.

Another significant characteristic of PrimaLuna amplifiers is the "Smart Watt" technology. This innovative design enables the amplifiers to operate in triode and ultralinear modes with a simple switch, allowing users to select between powerful output and a more refined, softer sound. This versatility caters to various listening preferences and musical genres, making PrimaLuna amplifiers adaptable to any environment.

The build quality of PrimaLuna products reflects a commitment to durability and aesthetics. The chassis are crafted from heavy-gauge steel, ensuring that the internal components are protected and the overall structure remains sturdy. Additionally, the elegant design with polished finishes and glowing tubes creates a visually appealing piece of equipment that fits seamlessly into any audio setup.

From entry-level models to high-end systems, PrimaLuna USA offers a range of products that cater to different needs while maintaining a focus on sound quality, longevity, and user convenience. Their dedication to innovation, combined with a rich heritage in audio design, continues to position PrimaLuna as a leader in the tube amplifier market, attracting both newcomers and seasoned audiophiles alike.
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