Chapter One
Safety Warnings and Warranty Information
1.1 Safety Warnings
We want you to be aware of certain safety aspects, for reasons of product safety and
liability. With all due respect, please read the following before operating your new Diezel
Amplifier.
-Do not use or store this Amplifier in or near moist or wet areas.
-Check voltage selector at rear of unit before plugging unit in. Make sure that voltage
shown is the correct voltage for the location you are using the amplifier at. Under no
circumstances can the amplifier be used at different than shown voltages.
-Opening of the amplifier housing must only be done by authorized personnel. No user
serviceable parts inside.
-The VH4/VH4S was designed to amplify a guitar signal and can be used only for this
purpose.
-When transporting the VH4(S) please observe the following:
The Diezel VH4 is a vacuum tube instrument amplifier. Vacuum tubes are shock sensitive,
especially when hot. To avoid damaging the unit, we recommend using care during setup
and tear down of the unit.
Allow the Amplifier to adjust to ambient temperature before operating, 60 minutes should
be sufficient in all cases.
The VH4 4 lives inside an extremely rugged chassis, but for continued road use, please
protect the amplifier by using a professional flight case. Transport only in operating
position. Do not transport upside down or on it’s side.
-The Diezel VH4 power amp is configured to deliver highest tone fidelity at “ normal “
volume levels. ( 76-80dB ) We caution you for your own good not to expose yourself to
very high volume levels for long periods of time. It can lead to hearing damage.
-Blown fuses can only be replaced with fuses of equal values. The use of incorrect fuses is
prohibited and can cause severe injury and damage of the amplifier. Use only a grounded
power cable in good operating condition.
1.2 Warranty Information
10 years to the original owner with proof of purchase. Power Tubes and Pre Amp tubes
are covered for 3 months to the original owner. The amps will be tracked via both Diezel
USA and Diezel Germany recorded sales beginning 1/20/2009. ALL REPAIR WORK MUST
BE DONE BY A DIEZEL CERTIFIED TECHNICIAN. Not following this procedure will VOID
WARRANTY. This will ensure the the original owner and us at Diezel Amplification that the
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