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REAR PANEL LAYOUT
1 2 3 4 5 6 7 8 9
1) Loudspeaker Output Jacks: This is where you can hook up an extension or external speaker
cabinet(s) if desired.
Note! Hooking up a cabinet through the External jack will mute (disconnect) the internal speakers!
Extension: This speaker jack runs parallel with the internal speakers which are wired for 16
Ohms. The extension cabinet must be 16 Ohms.
External: This speaker jack will mute (disconnect) the internal speakers and you can hook up
either a 16 Ohm or 8 Ohm cabinet. Be sure to set the Output Select switch accordingly.
NOTE! AC30CCH: You’ll notice the rear panel speaker jacks are labeled the same as the combos
even though the head does not have internal speakers! Both jacks (External and Extension) are
parallel so run cabinets as you normally would. One 16 ohm cabinet into either jack, two 16 ohm
cabinets into both jacks or one 8 ohm cabinet into either jack with the impedance select switch set
accordingly. See below for hook up options.
WARNING! To ensure that your system works correctly, you must observe the following points.
a) Don’t use an external speaker whose impedance is other than 8 ohms.
b) Don’t connect a speaker whose rated input capacity is less than 30 watts. The speaker may be
destroyed if you ignore this caution — not recommended!
c) You must use a speaker cable to connect an external speaker. Don’t use a shielded cable like
the one you use to connect a guitar to an amp.
d) You must turn off the power before connecting the cable. Connecting the cable while the power
is turned on may damage your amp.
Note! It is recommended that all audio cables, with the exception of the speaker lead, used to
connect to the AC30 Custom Classic are of a high quality, screened type. These should not exceed
10 metres in length. Always use a non-screened Vox approved speaker lead with the AC30 Amplifier
and extension cabinets.
2) Output (O/P) Select
COMBOS
16 Ohm: Combos allow for the following configurations:
1) Set it to this if you use the internal speakers only.
2) Set it to this if you connect a cabinet through the External jack and the impedance is 16
ohms.
HEAD
16 Ohm: Head allows for the following configuration:
1) Set it to this if you use one 16 ohm cabinet. Either jack can be used.
COMBOS
8 Ohm: Combos allow for the following configurations:
1) Set it to this if you connect an extension cabinet through the Extension jack. You’ll be
running the internal and external speakers in parallel. The impedance of the extension cabinet
must be 16 Ohms.
2) Set it to this if you connect an external 8 ohm cabinet through the External jack.
HEAD
8 Ohm: Head allows for the following configurations:
1) Set it to this if you connect two 16 ohm cabinets.
2) Set it to this if you connect one 8 ohm cabinet.