VOX Amplification USA V212HWX - Manual (Page 8)

8
AC30HW
1 2 3 4
The AC30HW internal speakers are connected via a speaker jack plug, they are wired for 16 Ohms. You
can connect another 16 ohm cabinet and run this in parallel with the internal speakers. If you want to dis-
connect the internal speakers simply unplug the jack. Be sure to set the IMPEDANCE SELECT switch ac-
cordingly. (See “IMPEDANCE SELECT Switch”)
WARNING! To ensure that your system works correctly, you must observe the following points.
a) Don’t use an extension cabinet whose impedance is anything other than 16 ohms.
b) Don’t connect a speaker whose rated input capacity is less than 30 watts (for AC30HW) or 15 watts
(AC15HW). 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 speaker 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 con-
nect to the AC30HW/AC15HW 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 AC30HW/AC15HW Amplifier
and extension cabinets.
2. IMPEDANCE SELECT switch
16 OHMS: Combos allow for the following configurations:
a) Set it to this if you use the internal speakers only.
b) Set it to this if you connect an external 16 Ohm speaker cabinet through the External jack (internal
speakers disconnected).
8 OHMS: Combos allow for the following configurations:
a) Set it to this if you connect an extension cabinet. You’ll be running the internal and external speakers
in parallel. The impedance of the extension cabinet must be 16 Ohms.
b) Set it to this if you connect an external 8 ohm speaker cabinet through the External jack (internal
speakers disconnected).
3. FOOT SWITCH jack
This is where you connect the included Foot Switch (VFS1) to switch between HOT and COOL modes on
the TOP BOOST Channel (HOT Mode must be engaged on the control panel for the Foot Switch to oper-
ate)
4. MAINS INPUT connector
This is where the supplied, detachable Mains (power) cord is connected. The specific mains input voltage
rating that your amplifier needs to run at is located on the rear panel of your amplifier. Before making any
connections or powering up the amplifier, make sure the correct voltage is set. If you have any doubt, re-
fer to your local VOX dealer.