Troubleshooting

If you are having trouble with your amplifier, check the following items.

No sound

Check the following:

<Both the A38 and (if applicable) P38 power- amplifiers are switched on.

<The amplifier is not muted (indicated on the A38 by Muted being shown on the front-panel).

<The selected source is generating audio (e.g., if CD is selected, then the CD is playing).

<The AV input is not selected on the A38 (indicated by the light above the AV button being illuminated), instead of the expected source. In this case, press AV again to de-select the AV input.

<The speaker outputs are enabled on the A38/P38, as indicated by the lights above the SP1 and/or SP2 buttons (as appropriate) being illuminated.

Sound cuts-out unexpectedly

If the temperature of the internal heatsink rises above a safe level, then a thermal cut-out inside the amplifier operates to protect the unit. During this time, the power indicator on the front panel flashes and the protection system temporarily removes power to the speakers. The system will reset itself as the heatsink cools down.

<With two pairs of low-impedance speakers

connected (6Ω or less), overloads are more likely. Overloading the amplifier may cause it to shut down because of overheating.

<Note that, due to the high output voltage from a CD player, it is possible to drive your amplifier at full power even though the volume is not set at maximum. See page 11 to adjust the input trim of a CD player or other input device.

Amplifier does not switch back on

Both the amplifiers detailed in this handbook have a protection mechanism which is activated if you switch the unit on immediately after turning it off. If this mechanism activates, wait 30 seconds before switching the unit on again.

Remote-control codes

The following tables give the infrared commands accepted by the A38.

 

Power commands

 

Menu navigation commands

Command

Decimal Code

Command

Decimal Code

Power toggle

16–12

Up

16–32

Power-on

16–123

Down

16–33

Power-off

16–124

Select

16–37

 

 

Enter

16–87

Source selection commands

 

 

Command

Decimal Code

Display control commands

 

SAT select

16–0

 

 

PHONO select

16–1

Command

Decimal Code

AV select

16–2

Display

16–59

Tuner select

16–3

 

 

DVD select

16–4

Volume control commands

 

PVR select

16–6

Mute

16–13

CD select

16–7

Volume up

16–16

Aux select

16–8

Volume down

16–17

The following tables give commands accepted by the P38.

Power commands

 

Speaker control commands

Command

Decimal Code

Command

Decimal Code

Power toggle

16–12

Speaker 1 toggle

16–35

Power-on

16–123

Speaker 2 toggle

16–39

Power-off

16–124

Speaker 1 on

16–43

 

 

Speaker 1 off

16–44

 

 

Speaker 2 on

16–45

 

 

Speaker 2 off

16–46

Note that the A38 also responds to code 20–53 (the Play command for an Arcam CD player). The A38 switches automatically to CD input on receiving this command.

English

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Arcam A38, P38 manual No sound, Sound cuts-out unexpectedly, Amplifier does not switch back on
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A38, P38 specifications

The Arcam A38 and P38 are high-performance audio products designed for discerning listeners seeking exceptional sound quality and user-friendly features. These models represent a commitment to delivering a rich and immersive listening experience, suitable for both music enthusiasts and audiophiles alike.

The Arcam A38 is an integrated amplifier that combines high power with an elegant aesthetic. Its design reflects a blend of modern engineering and classic audio principles. The A38 boasts a robust Class G amplification technology, which allows it to deliver high-quality sound with exceptional efficiency. This amplifier produces up to 80 watts per channel into 8 ohms, providing ample power to drive a wide range of speakers. The Class G system operates in a standard Class A mode under normal conditions, switching to Class AB when more power is demanded, thus delivering a dynamic and refined audio performance.

One of the standout features of the A38 is its advanced digital signal processing capabilities. It includes a high-quality digital-to-analog converter (DAC), ensuring that digital audio sources are rendered with exceptional clarity and accuracy. The A38 supports multiple input options including analogue, digital optical, and coaxial inputs, offering versatility for connecting various sources such as CD players, streaming devices, and televisions.

Complementing the A38, the Arcam P38 is a power amplifier specifically designed to enhance the power and performance of any audio system. It is engineered for compatibility with the A38, making them an ideal pair for a high-fidelity set-up. The P38 also uses Class G technology and delivers up to 150 watts per channel into 8 ohms. Its robust build and superior component quality contribute to an impressive dynamic range and low distortion, which are essential for an impactful listening experience.

Both the A38 and P38 feature a sophisticated layout that minimizes electrical interference, ensuring clean signal paths and optimal performance. Additionally, they are designed with user convenience in mind, featuring easy-to-use front panel controls and remote operation capabilities.

In summary, the Arcam A38 and P38 are remarkable audio components that emphasize innovation, power, and quality. Together, they create a synergistic audio experience that fulfills the demands of serious music lovers, providing a pathway to experiencing sound in its truest form. With advanced technologies and a commitment to fidelity, these models stand out in the competitive landscape of high-end audio equipment.
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