INPUT � The ML-200 is equipped with a standard ¼� unbalanced input. Input sensitivity can be switched
from approximately 300 mV to 1.25 volt. The input impedance is 500k ohms. The precision input scaling preamp contains a 36 Hz, 12 dB/octave high pass filter (more effective and less intrusive than the more common 6 dB filters) and an �RFI� filter (radio frequency interference) to eliminate unwanted noise. The input gain stage consists of a feedback type circuit that provides continuously variable gain with minimal noise.
TUNER OUPUT � The ML-200 is equipped with a parallel and fully isolated tuner output. This jack is
located after the front end scaling preamplifier, is pre-signal shape and pre-eq and may also be used to drive a separate direct box or high impedance recording device.
SIGNAL SHAPE � The ML-200 is equipped with 3 signal shape circuits that are factory programmed.
The LOW BOOST adds low frequency peaking gain in the 38-67 HZ band. This filter is especially effective when used with a 5 string bass. The MID SCOOP switch generates midrange cut, the SIGNAL ATTACK adds a peaking high frequency boost in the 2.25-8kHz band. LED indicators are provided to visually show when each filter is engaged.
EFFECTS LOOP � The ML-200 is equipped with an effects loop, allowing commonly used �series� type
effects (such as compression/limiting units) or parallel effects (such as chorus or flange units that contain an on-board �mix� control). The location of the effects loop is post signal shape and preequalization. The signal is routed through the loop automatically if an effects unit is not plugged in. An additional feature of the effects loop is that the effects send jack can be used as a post-signal shape, pre-EQ line output. Plugging into the effects return jack will break the signal path and provides for a preEQ line input.
ACTIVE EQUALIZATION � The ML-200 contains an active 3 band equalizer with sweepable
parametric midrange control. This equalizer, similar to those found on professional sound consoles, is a very useful tool. The low frequency EQ section is an 80 Hz, shelving curve with 15dB of cut or boost. The high frequency eq section is a 3.5 kHz, shelving curve with 15dB of cut or boost The parametric sweepable-mid section features 12 dB of cut or boost with a bandwidth approximately 1 octave wide. The center frequency of this filter is continuously user adjustable from 150 Hz to 2 kHz with a single control. This filter is typically (but not always) used to reduce or remove offending frequencies in the instrument�s pick-up response, or boosting response to achieve a particular voicing. Spend some time experimenting so that the process becomes creative as well as corrective.
MASTER VOLUME � The master volume control adjusts the overall volume of the amplifier and the
effects return. Typically, best results are obtained when this control is operated between the 9:00 and 3:00 positions.
DIRECT OUTPUTS � The ML 200 is equipped with a high quality balanced direct output with ground
lift switch for pin 1. The output level is �10dB nominal line level, pin 2 hot, and the output impedance is 600 ohm. The direct output is fully protected from mixers providing phantom power up to 48 volts.
POWER AMPLIFIER � The ML 200 features our DUAL OUTPUT DESIGN which contains two separate
advanced monolithic power amplifier circuits that are fully protected against overloads, short circuits and thermal faults. Output is rated at 100 watts per channel into 4 ohms (dual mode), and 200 watts into 8 ohms (bridged mono mode) with excellent overload recovery characteristics. A unique feature of this amplifier is the �on silicon� temperature sensor that automatically tracks and adjusts the amplifier�s operating and protection parameters, a very cool feature that increases product reliability 10-fold over conventional designs. With the Mode Switch in the dual position, only the dual speaker jacks are active. With the Mode Switch in the bridged mono position only the bridged mono jack is active. Driving speaker loads below the amplifiers rated minimum load (4 ohms each channel in dual mode and 8 ohms in the mono bridged mode) will result in distortion and possibly intermittent operation as the protection circuits are activated.
