Owner`s manual

Guitar Amplifier GVT52-212
9
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The Rear Panel continued...
WARNING! Never turn on or use the amplifier without a load or speaker connected to the amplifier.
ALWAYS use a good quality (non-shielded) speaker cable. Never use (shielded) instrument cable.
ALWAYS match the amplifier’s speaker output impedance to the impedance of the speaker
that is being used. Use only one type impedance output at a time. If more than one speaker is
connected at the same time, make sure they all have the same impedance rating. Never use
two or more cabinets with different impedance ratings. This will create an unbalanced load.
When using multiple speaker cabinets (with the same impedance rating), match the total load
impedance of the speaker cabinets to the speaker output of the amplifier.
SPEAKER CABINET IMPEDANCE divided by NUMBER OF CABINETS = TOTAL LOAD
16Ωcabswithparallelinputs/4cabs=4Ωload.Forthisapplicationuse4Ωoutputjacks.
16Ωcabs/2cabs=8Ωload.Forthisapplicationusethe8Ωspeakerjacks.
16Ωcab/1cab=16Ωload.Forthisapplicationusethe16Ωspeakerjack.
8Ωcabs/2cabs=4Ωload.Forthisapplicationusethe4Ωoutputjacks.
8Ωcab/1cab=8Ωload.Forthisapplicationusethe8Ωspeakerjack.
4Ωcab/1cab=4Ωload.Forthisapplicationusethe4Ωspeakerjack.
23. EFFECTS LOOP SEND: Use this
1/4"TSunbalancedoutputtosenda
line-level output to an external effects
processor (for example). The output
here is affected by all controls except
theVolume[6,12].
 UsetheEffectsLoopReturnjack[22]
to feed the returned processed signals
back into the amplifier.
18 20 21 22 23 24 25 2619
24. 4 OHMS:Thetwo4Ωspeakeroutput
jacks are wired in parallel. Use a single
jackwhenusingone4Ωspeaker
cabinet. Use both speaker jacks when
usingtwo8Ωspeakercabinets.Ifyou
havefour16Ωcabinetswithparallel
speaker jacks, you can link all four
16Ωcabinetsina
parallel wiring
configuration,totalinga4Ωload.
25. 8 OHMS:Thetwo8Ωspeaker
output jacks are wired in parallel. Use a
singlejackwhenusingone8Ωspeaker
cabinet. Use both speaker jacks when
usingtwo16Ωspeakercabinets.
26. 16 OHMS:The16Ωspeakeroutput
jackisdesignatedfor16Ωspeaker
cabinets only.