signal. On the processing unit, you will use the mixed signal output to return the signals (both wet and dry) to the return jack on the amplifier. The ratio between the wet signal and the dry signal is heard as the amount of effects added back to the original signal which is controlled by the mix knob (also called “balance”) on the effects processor. This may be a real knob (as in the Alesis Microverb), or software controlled (as in the Yamaha SPX-90, SPX900 or SPX 990).Set the input sensitivity on the effects processor according to the processor manufacturer’s instructions.

The effects send jack may also be used as an auxiliary output to drive a direct box, tape deck etc. This output is pre-equalization, and pre master volume. The mute switch will shut this output down when engaged.

Master Volume -

The master volume control is post-eq, and adjusts the signal level sent to the power amplifier. Best results are usually obtained when this control is set between the 9 o’clock and 3 o’clock position.

Master Section Status Indicators -

The power LED indicates that the amplifier is on and the low voltage regulated power supplies are active.

The protect LED indicates that the amplifier is in “protect” mode and the output relay is de- energized. This LED will illuminate for approximately 3 seconds during power switch-on and switch-off. It will also illuminate during any internal fault condition.

The thermal LED indicates that the amplifier has overheated, engaged the protection circuit and shut down. This circuit is self-resetting when the offending condition (blocked air vents, foreign body stuck in fan) is corrected. This LED will also flash for a brief time at turn-on and turn-off, indicating that the amplifier protection circuits are operating

The signal LED indicates that the power amplifier is receiving signal (over several watts output) and all is well!

The limit LED indicates that the power amplifier has reached maximum power and the limiter threshold has been crossed. Driving 6dB beyond this point, the amplifier will gradually begin to clip.

The output limit switch engages or bypasses the internal soft clip limiter. This limiter allows simulation of output saturation as the amplifier nears it’s maximum power. The limititing action is particularly musical sounding, even when driven hard.

Direct Output -

The 250/500 series amplifiers includes a studio quality, fully active transformerless balanced direct output, with pre-post equalization switch.

With the pre/post switch in the “out” position, the direct output receives its signal directly from the pre-amp input buffer amplifier with no tonal modifications. This is a pre gain control, pre eq output, with the best signal to noise ratio. Most recording and sound reinforcement companies will want to use this position since changes you make to your stage sound will not affect this output.

With the pre/post switch in the “in” position, the direct output receives its signal from the output of the 4 band equalizer. This allows for additional flexibility in some situations but is often not desired for recording or live sound reinforcement.

GENZ BENZ - Model 250/500 Bass Amplifier

(Page 6, Rev: 1/14/2006)

Page 5 Page 7
Page 6
Image 6
Genz-Benz 500, 250 owner manual Master Volume, Master Section Status Indicators, Direct Output
Page 5 Page 7

250, 500 specifications

The Genz-Benz 500 is a powerful and highly regarded bass amplifier that has made a significant impact on the music world, especially among bass players seeking reliability and flexibility in their sound. Known for its exceptional tonal quality and performance, the Genz-Benz 500 is a versatile amplifier that caters to a wide range of musical genres and playing styles.

One of the standout features of the Genz-Benz 500 is its innovative design, which includes a lightweight and compact chassis that makes it easy to transport and set up. Weighing in at just over 6 pounds, this amplifier is an ideal choice for gigging musicians who need an amp that won’t weigh them down on long nights of traveling. Despite its lightweight construction, the Genz-Benz 500 is built to be robust and durable, ensuring it can withstand the rigors of regular use.

At the heart of the Genz-Benz 500 is its impressive power output, delivering up to 500 watts of solid-state power. This high wattage allows the amp to produce deep, powerful bass tones while maintaining clarity and definition, even at higher volumes. The amp features a variety of tonal shaping capabilities, including a 3-band EQ with a sweepable midrange frequency, allowing players to sculpt their sound to meet specific musical demands.

The Genz-Benz 500 is also equipped with a range of advanced technologies that enhance its usability and performance. One such feature is its onboard digital signal processing (DSP), which includes built-in effects and various presets that allow users to further refine their sound. The amp also boasts a direct output for easy integration with recording equipment and sound systems, making it an excellent choice for both live performance and studio recording.

Additional characteristics of the Genz-Benz 500 include a fan cooling system that ensures optimal performance without overheating, as well as a rugged, roadworthy construction that promises longevity. The amplifier also has an intuitive control layout that makes it user-friendly, letting players focus more on their playing and less on technical adjustments.

In summary, the Genz-Benz 500 is an exceptional amplifier that combines power, portability, and versatility. With its advanced features, robust construction, and superior sound quality, it remains a top choice for bass players looking to elevate their performance in various musical settings. Whether on stage or in the studio, this amp delivers the reliability and tonality that every bassist craves.
Top Page Image Contents