User manual LEXICON 300 V3.0

[. . . ] 300 Digital Effects System V 3. 0 Owner's Manual Unpacking and Inspection After unpacking the 300, save all packing materials in case you ever need to ship the unit. Report any shipment damage to the carrier at once; report equipment malfunction to your dealer. Precautions The Lexicon 300 is a rugged device with extensive electronic protection. However, you should observe the same reasonable precautions that apply to any piece of audio equipment. · · · · · Always use the correct line voltage. [. . . ] BASS acts on both stereo channels equally. TREB (Treble EQ) TREB is a 6 dB/octave shelving EQ controls with a range of +6 dB boost and -18dB cut. TREB acts on both stereo channels equally. LTRB and RTRB These controls allow independent adjustment of left and right treble. They may be used together with the stereo adjustments to create a 12 dB/octave cut or boost. Note that the 3 dB frequencies can be different from the stereo set. BXOV (Bass Crossover) BXOV sets the crossover point for BASS. When BASS is set to full cut, the level is -3 dB at the frequency set with BXOV. TXOV (Stereo Treble Crossover) TXOV sets the crossover point for TREB. When TREB is set to full cut, the level is -3 dB at the frequency set with TXOV. TXLR (Independent Treble Crossover) TXLR sets the crossover point for LTRB and RTRB. When either is set to full cut, the level is -3 dB at the frequency set with TXLR. SPEQ (Spatial EQ) SPEQ sets the amount of a crossfeed between channels. The signal first goes through a 6 dB/octave low-pass filter whose frequency is set with BXOV. When SPEQ is set positive (above 0) the crossfeed has a negative sign. When SPEQ is set negative (below 0), the crossfeed has a positive sign. When the control is set to either maximum or minimum, the gain in the crossfeed circuit is unity. The result of this control is to change the separation of low frequency stereo signals. When the control is raised, low frequencies in the sum (mono) channel are reduced, and low frequencies in the difference (stereo) channel are raised. With the control at maximum, low frequency mono signals are completely removed. This represents an extreme setting which should seldom be needed in practice. With material which has stereo bass information, or which contains some reverberation, the effect of raising SPEQ is to increase the sense of spaciousness and depth of the sound. It is particularly useful on material recorded with panpots, or coincident and semi-coincident microphone technique. When most of the bass in a recording is in the sum (mono) channel, raising SPEQ may reduce the bass level. This effect can be compensated for by raising the overall bass level with BASS. Since both controls use the same BXOV setting, this compensation will be quite accurate as long as SPEQ is set to less than 3 dB boost. 4-20 The Algorithms and their Parameters Stereo Adjust Delay and Feedback Page These controls give individual channel control over the 5-second post-equalization delay line. 5-second, 10 milliseconds per step, mono control for the left channel. [. . . ] The unit may be damaged by exposure to temperatures below -22°F (-30°C) or above 167°F (75°C), or by exposure to humidity in excess of 95%. If a unit exposed to such conditions fails to operate after it returns to a normal operating temperature, contact your local service representative. Common MIDI The 300 doesn't respond to MIDI Program Changes. Problems Check the PARAM MIDI channel on the MIDI Control page in Control mode and check the Table Mode setting on the same page. Also check MIDI In/Out connections between the units. The 300 doesn't respond to Controller messages when using Dynamic MIDI®. [. . . ]