User`s manual

LTO

Which filter type, slope and crossover frequency you should choose will depend on the speakers you are

using. Since it is important to set-up filter points carefully to maximise speaker power handling and avoid

damage, this is usually best left to a professional car audio installer.

IMPORTANTIMPORTANT

Phase Adjustment: When using the Low-Pass filter, it is possible to adjust the phase of the signal in the low band in 5

degree steps. Combined with the 180 degrees polarity switch, it is possible to adjust the phase in the bass region through

a full 360 degrees.

When making fine adjustments to signal phase in the bass region, bear in mind that phase is related to

frequency. You cannot "phase-align" the entire low-frequency band, but you can align the phase of two

woofers at 50Hz, for example, or whatever frequency you choose. Where dual woofers are causing some

cancellation at a frequency "sweet spot" because of different mounting positions and/or mounting angles

and/or vent characteristics, aligning their phase can substantially improve SPL (sound pressure level) and

clarity of bass.

ADVANCEDADVANCED

TIPTIP

DYNAMIC GAIN CONTROL (CMP/LIM):

Each output channel has its own independent COMPRESSOR/LIMITER, allowing you to determine the amount of level

gain (i.e. increase in volume) above a threshold point that you set. This helps maintain a more consistent listening level

and both protects and extends the performance of your speakers. Input and Output levels and the amount of gain red-

uction are displayed on the PC screen in real-time as an aid to system set-up.

Threshold: Allows setting of the level above which the Comp/Limiter intervenes (compressing or limiting the signal). If

the music stays below this threshold setting, the level is unchanged.

Atk/Rel: There is a choice of 3 reaction speeds combining attack and release times. You can choose whether the Comp/

Limiter reacts more rapidly or slower than the default NORMAL setting when the signal exceeds or drops below the thre-

shold. Set faster for high frequencies (tweeters), slower for bass frequencies. For midrange or full-range speakers, the

NORMAL setting will generally be the optimum one. For Subwoofers, the SLOW setting will usually be best.

Ratio: The value selected here dictates how strongly the level is controlled when it exceeds the Threshold point you set.

The range is 1.1 to 20.0, plus an additional LIMITER setting.

Parameter Menus & System Set-up