Specifications; Troubleshooting - Fostex HP–V8 Owner's Manual

Specifi cations
Used vacuum tubes
Maximum output
Conformity load
impedance
Frequency response
S/N ratio
THD + N characteristics
Input
Output
Power supply
Power consumption
Dimensions
Unit mass
* Product specifi cations and appearance are subject to change for improvement without prior notice.

Troubleshooting

The following is a list of frequent problems customers experience and their solutions.
Problems
No sound
A crackling noise may be heard.
A number is displayed after "ER"
appears, then the unit is shut down
and cannot be turned on again.
"OL" is displayed, the sound volume
drops or the unit is shut down.
KT88, E88CC, 300B
2,000 mW (at 16 Ω)
LOW 16 Ω to 600 Ω
HIGH 48 Ω to 600 Ω
20 Hz - 50 kHz (typ)
115 dB
0.5% or less (32 Ω, 1 V RMS)
RCA (L/R) unbalanced × 1
XLR (4 poles) balanced × 1
6.3 mm in diameter, stereo phones unbalanced × 1
AC 120 V/230 V
198 W
430 mm (Width) × 245 mm (Height) × 416 m (Depth) (excluding protrusions)
Approx. 31 kg
• Check connections to other devices. ( page 5)
• Check whether the MAIN SWITCH on the rear panel was turned OFF while the DIRECT INPUT
switch being ON position. After turning the MAIN SWITCH on again, turn the DIRECT INPUT
switch OFF and adjust the sound volume. ( page 6)
Some smart phones and other transmitting devices used near the unit may cause
interference and noise in amplifi er output. Shutting down transmission by setting a smart
phone to airplane mode may often minimize noise from interference.
Note down the number, disconnect the power cord and contact customer support.
This happens when the protective function is triggered after detecting an excessive signal
output in headphone output.
Lower the sound volume and check for short-circuits in cables and jacks.
Solutions
7