1723 amplifier settings – Best practice for Stereo

Here are the settings we recommend for Stereo purposes, specifically stereo setups that do not have room correction or adjustability on the subwoofer output. For stereo sources with room correction please refer to the home cinema guide. Settings not mentioned are ones we would rather leave as is unless you for any specific reason want to change them.

This guide should be read in conjunction with the Amplifier Operation Manual in the handbook.

Please see our other guides for Dual Source or Home Cinema settings.

1. Levels Menu  

1. The first step will be to set the correct input gain. Depending on the output voltage of your source you will have to select the correct position, typically an analog stereo preamp will have a relatively low output of around 1V, which makes +6dB the correct setting.
2. Set Ref. Level to off.
3. Adjust Master Level to the position until you have adequate bass in your room. This setting should be fully optimized after other settings are properly adjusted.  

2. Crossover Menu

1. LPF Bypass should be left off.
2. LPF Frequency may have to be tweaked a little for room, personal preferences, and also to the type of speakers you use. If you use larger floor-standing speakers, a good place to start will be a LPF frequency of between 50Hz and 80Hz. If you use a smaller bookshelf-type speaker that needs more help in the bass, you could consider adjusting the LPF Frequency between 80Hz and 120Hz. The subwoofer should be placed close to the speakers if you set a very high frequency as it will be easier to locate where the subwoofer is when playing music.
3. LPF Slope is how fast you want the signal to roll off after the LPF Frequency you just set. We recommend setting it to 12dB/Oct, unless you want to play around to see what gives the best bass in your setup.
4. Phase is the single most important adjustment to get your subwoofer properly integrated with your speakers. The easiest way to adjust this setting properly is using a song with a steady bass beat and adjust the phase until you have the most bass in the listening position. If that setting is above 90 degrees, we recommend setting signal invert to on, and resetting the phase (which now should be less than 90 degrees with optimal performance).
5. EQ mode 1 for larger rooms, or smaller rooms if you just want some extra rumble in the deepest bass. EQ2 mode will roll-off earlier and not give as much of an earthquake effect, and EQ3 mode will have the least amount of deep bass of the tree presets.

3. Parametric EQ Menu

1. Only make changes here if you have measured the response and know where you need to make some changes.

4. Input/Turn-on

1. Input/Turn-on should be in Auto-on or 12V if you have a 12V trigger signal from your source that you want to use. 
2. Choose the input type that fits your source (RCA or XLR).
3. Choose for example RCA 1 + 2 if you have left and right signal pre-out from our source, or only RCA 1 for example, if you have a mono output for subwoofer use.

5. Setup Menu

1. If Auto turn-on is active, we would recommend setting the Wake-up Sens. to High so the amplifier turns on with very low input signal.