V4BH Bass Amplifier
The Rear Panel
14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
14.FUSE: This protects the unit from damage due to overload conditions or power line surges. If the fuse blows, replace it only with the same size and type.
15.AC LINE IN: Firmly insert the sup- plied AC power cord into this socket until it is fully seated. Plug the male end of the cord into a grounded AC outlet. DO NOT DEFEAT THE
GROUND PRONG OF THE AC PLUG!
16.PREAMP OUT: This jack carries the
17.POWER AMP IN: This jack accepts a signal to be sent to the power amp and the Slave Out jack (18). Using this jack breaks the path from the signal that was present at the Preamp Out jack (16). This can be used as a
18.SLAVE OUT: This jack receives the same signal that is being sent to the power amp. It is useful for power- ing another amp (slave) from this unit’s preamp. It can also be used as an “unbalanced” version of the Balanced Out (19) signal.
19.BALANCED OUT: This XLR jack is the preamp output. Thus, it will include any processing done in the Preamp Out/Power Amp loop (16,17). This sig- nal can be used to feed an external power amplifier, mixing console or house PA system.
20.PRESENCE SWITCH: When this switch is depressed a high fequency boost is added to the output signal. This helps compensate for a speaker cabinet with no high frequency driver, adding a glassy top end to the sound.
21.SPEAKER OUT: Two 1/4” phone jacks are provided for connecting speakers to the unit. These jacks are wired in parallel. Use the jack on the right (“Main”) first. The jack on the left should only be used to connect a sec- ond speaker cabinet.
NOTE: In some areas 1/4” speaker jacks are not acceptable for use on amplifiers with high output power levels. For this reason the 1/4” jacks on your amplifier may be sealed. If this is the case, use the Speakon® jack to connect the amplifier to your speaker cabi- net. Use a heavy duty speaker cable termi- nated with the proper connectors.
22.IMPEDANCE SELECTOR: Use this switch to match the output imped- ance of the amp to the speaker(s) being used (4 or 8 ohms). For help in deciding the total impedance of your system, consult the chart below.
Cabinet | Number of | Total |
Impedance | Cabinets | Impedance |
4 ohms | 1 | 4 ohms |
8 ohms | 1 | 8 ohms |
8 ohms | 2 | 4 ohms |
16 ohms | 2 | 8 ohms |
16 ohms | 4 | 4 ohms |
|
|
|
Speakon® is a registered trademark of Neutrik U.S.A.
5
