How To Adjust the THIEL SmartSub Integrator

-Configeration Parameters
-System Parameters
-Main Speaker Parameters

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The SmartSub Integrator is adjusted using the four buttons at the right side of the front panel. All adjustments are made by first selecting which of the 11 parameters is to be adjusted and then by increasing or decreasing the setting of that parameter. A parameter is selected by pressing the Select Prev or Select Next button repeatedly until the light for the desired parameter is on. Once the desired parameter is selected, the current setting will be shown in the numerical display and pressing the Increase or Decrease buttons will change the setting. Three of the parameters (Mode, Channels and Type) do not have associated numerical settings and therefore when these are selected the display will be blank. These parameters instead each have two alternate options that can be selected by the Increase or Decrease buttons and the current setting is indicated by which option is lighted.

Only the three system settings (or two if Augment mode is used) should be considered adjustments for taste and requirements. The other parameters should be considered onetime setup adjustments that are not changed unless there are changes to the main speakers or the system configuration.
Right Side of Integrator

Presets
There are six presets available, each of which stores the settings of all 11 parameters. The presets can be stored or recalled from the Integrator's front panel. To create a preset, first set all 11 parameters to the settings you wish to be saved.

Pressing the Store Preset button will cause the display to flash P1. Use the Increase and Decrease buttons to select which preset, from P1 to P6, in which you wish to store the current settings. When the desired number is displayed, press the Store Preset button again to complete the save. The display will stop flashing.

To recall a Preset press the Recall Preset button. P1 will be recalled and others can be selected by using the Increase and Decrease buttons.
Left Side of Integrator

Configuration Parameters
Mode [Augment or Crossover]
Augment mode should be used if the main speakers are able to play loudly enough and the subwoofer is used only to extend the bass range. With this mode the signal to the main speakers will not be altered by the Integrator.
Crossover mode should be used if the main speakers are not able to play loudly enough or it is desired to limit their bass extension. In this mode the subwoofer will reproduce the bass that would normally go to the main speakers.

Channels [Mono or Stereo]
If only one subwoofer unit is used then Mono must be selected. If more than one subwoofer is used then Stereo may be selected (but does not have to be). Stereo allows the bass range of the left and right channels to remain separate and therefore can provide better left/right imaging.

Number of Subwoofers [1 to 16]
This must be set for the total number of subwoofers in the system. If Stereo Channels is selected then only even numbers are available. Stereo configurations must use the same number of subwoofers in each channel.

Main amplifier gain [in dB, 20 to 40]
This parameter needs to be set only if the speaker level inputs are not used. Therefore it must be set if the Mode is set to Crossover or if the line level inputs are used with Augment Mode.
The setting is the amplification of the main amplifier in dB (decibels). The number can probably be found from the owner information or the manufacturer of the amplifier.

System Parameters
Low Frequency Extension [-3 dB frequency in Hz, 16 to 40]
This setting determines how extended to bass reproduction of the subwoofer will be. The lower the number the more complete the reproduction will be. However, a very low number will place somewhat more demand on the subwoofer. The louder you play and the larger the room the harder it is for the subwoofer. If the subwoofer cannot play loudly enough you can either increase this number (to 30 or 35) or add more subwoofer units to your system.

Low Frequency Level [boost or cut in dB, -6 to +6]
This setting controls how much extra bass will be produced by the subwoofer. Normally it should be set to zero. However, certain, usually very large, rooms will not contain a normal amount of bass energy, and this setting can be used to compensate for such a case of weak bass. It provides increased or decreased bass energy in the range below 80 Hz.

Crossover Frequency [in Hz, 40 to 99]
This parameter is only available if Crossover Mode is selected. Settings lower than the Low Frequency Extension or the main speaker Low Frequency Limit settings are not available.

This setting determines the frequency below which energy is directed away from the main speakers and to the subwoofer. Unless the main speakers are very small, it is usually preferable that this setting not be higher than 80. Lower settings will usually provide better sonic results but will also place more demands on the main speaker to reproduce bass.

How To Enter Your Main Speaker Parameter Data for the
SI 1 SmartSub Integrator's SmartMatch Settings
Click HERE

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