The OBL-2 allows standard Hammond consoles and many Hammond spinet organs with built in speakers to be connected via a 1/4" output jack to an external amplification system. The box is made from heavy gauge anodized aluminum and easily mounts under the generator shelf or other convenient location. The unit has both an overall output and one that is low pass filtered. The low pass output is useful when using a bass amp to reinforce the organ low end. A level control is provided to allow the output signal to be adjusted to match the amplifier input requirements.
NOTE: Most commercial and musical instrument amplifiers are not designed for organ use and will not give the same sound quality as a Leslie or Hammond tone cabinet. However there are circumstances where connecting to an external amplifier is still desirable. These include temporary installations, rental instruments, and adding a bass amp to give the organ more low end power.
NOTE: Pre-amps in early console models (A, AB, AV, B, BA, BC, BCV, BV, C, CV, D, DV, and G) receive their DC operating voltage from the tone cabinet and will not produce an output if the tone cabinet is disconnected.