Marshall Amplification 1974X User Manual

ENGLISH
5
REAR PANEL FUNCTIONS
1. TREMOLO FOOTSWITCH JACK
ThisiswherethesuppliedTremoloon/o
footswitchispluggedin.
2 & 3. SPEAKER OUTPUTS
Connectoneortwospeakercabinetshereusing
1/4”jackspeakercables.
Warning: alwaysensuretheoutputimpedance
selectorissettotheappropriateimpedancefor
theloadofyoursetup(speakercabinets).Never
usethisampwithoutaspeakerorload.
4. OUTPUT IMPEDANCE SELECTOR
Matchestheamp’soutputtotheload
impedance.Ensuretheampiscompletely
powereddownbeforeturningtheselector.
Theimpedanceselectedontheampmust
matchthetotalimpedanceoftheinternal
speakerorexternalspeakercabinet(s)being
used.
• Whenusingthecombo’sinternalspeaker
only,theimpedanceselectormustbesetto
16Ω.
• Ifanaddional16Ωextensionspeaker
cabinetisusedinconjunconwiththe
internalspeakertheimpedanceselector
shouldbesetto8Ω.
Note: anextensionspeakercabinetwithan
impedanceoflessthan16Ωshouldnotbeused
inconjunconwiththeinternalspeaker.
Warning: failuretocomplywiththesepointsmay
resultindamagetotheamp.
5. MAINS FUSE
Thecorrectvalueofthemainsfuseisspecied
ontherearpanel.
6. H.T. FUSE
ThecorrectvalueoftheH.T.fuseisspecied
ontherearpanel.
7. POWER INLET
Thesuppliedmainspowerleadisconnected
here.Themainsinputvoltagerangthatyour
amphasbeenbuiltforisshownontherear
panel.
8Ω
16Ω
4Ω
V1 V2 V3 V4 V5 V6
5
431 72
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Marshall Amplification 1974X Specifications

Power

mains fuse value	specified on rear panel
H.T. fuse value	specified on rear panel
mains input voltage rating	shown on back panel

Weight and Dimensions

weight	18.2 kg
height	225 mm