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BUGERA 412H-BK User Manual

bugera-amps.com

Dear Customer,
Welcome to the team of BUGERA users, and thank you very much for expressing 

your confidence in BUGERA products by purchasing the BUGERA 412H-BK. 

Even though hooking up and operating the 412H-BK is very easy, we would still 

like to provide you with a brief description of this excellent speaker cabinet and 

its features.

◊ 

The BUGERA 412H-BK can produce extreme sound pressure levels. 
Please note that high SPLs do not only result in listening fatigue but 
can also permanently impair your hearing.

• 

Please turn off the amp and disconnect it from the mains before 

connecting it to the speaker cabinet.

◊ 

Turn off the amp before changing the BUGERA 412H-BK settings.

• 

Select stereo or mono operation and set the switch accordingly:
Set the BUGERA 412H-BK to MONO to drive it from a single power 

amp. In this case, the speaker cabinet’s impedance is 16 Ohms. Use the 

412H-BK’s INPUT connector to connect the speaker cable.
If you have two amplifiers or a stereo power amp, you can operate 

the 412H-BK in two-channel mode by setting the BUGERA 412H-BK to 

STEREO. Then, the speaker’s impedance is 2 x 8 Ohms. Connect the left 

channel of the power amp to LEFT, and the right channel to RIGHT.

• 

When connecting the 412H-BK to a valve power amp, please use the 

corresponding output(s) on your amp or set the impedance selector switch 

to the correct impedance after disconnecting the amp from the mains.

◊ 

Be sure to set amp impedance accordingly.

◊ 

Disconnect your amp from the mains before changing the 
impedance settings.

◊ 

Never use guitar or similar cables to operate the 412H-BK. Always use 
speaker cables with a minimum diameter of 2.5 mm (10 AWG).

◊ 

Never operate a valve amp without a load connected to it. If the 
impedance of the connected speaker cabinet fails to match the 
amplifier’s impedance, the amp could be damaged. Please refer to the 
operating instructions accompanying your amplifier.

Specifications

Speaker Type

4 x 12" BUGERA Vintage Guitar Series, 12G50J4

Power Rating (mono/stereo)

200 Watts / 100 Watts

Impedance (mono/stereo)

16 Ohms / 8 Ohms

Dimensions (W x H x D)

approx. 770 x 770 x 380 mm / approx. 30 x 30 x 15"

Weight

approx. 79 lbs / 35.8 kg

We are constantly striving to maintain the highest professional standards. As a result of these efforts, 
modifications may be made from time to time to existing products without prior notice. Specifications and 
appearance may differ from those listed or illustrated.

Rear panel

Wiring

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