Overview

Controls of these compact size amplifiers have been carefully designed to fit the footprint. Yet, it has all the controls that we need to tailor to every application. Compared to the standard amplifier, the only thing left out is the PEQ control which we assume customers already have from either HT receivers or dedicated DSP room correction units.

Crossover controls

Crossover controls include phase control on the left, then crossover setting in the middle and 12db/24db toggle switch on the right.

The phase control has been improved in resolution and labels have been adjusted to be more accurate. The circuit is a simple RC all pass filter. A similar circuit is used for adding delay time (such as those in Linkwitz's all active speakers). While the circuit does provide delay, it is limited to 180 degrees. Theoretically, given a fixed delay, the phase shift should be proportional to frequency. However, this RC circuit will not go beyond 180 degrees.

Bass extension control

To simplify bass extension control, we have incorporated bass extension and rumble filter in one signle toggle switch. Low music setting is the most gradual roll-off (or low Q) we recommend to customers. For HT application or vinyl playback, we recommend to use LOW-HT setting which incorporates a 3rd order rumble filter. The high setting is recommended for application where highest SPL or prolonged playback time is needed.

Power control

The designed of power control and power indicator light is slightly different from our standard models. The indicator will flash once when switching from OFF to ON (or red light to green light). The indicator also serves a second purpose: indicating amplifier is into clipping by blinking during loud passage.

top