Rain Dance EX1200 Front Panel, Digital Subharmonic Processor Section, Bass limiter section

ULTRABASS PRO EX1200

1.3.1 Front Panel

Fig. 1.2: ULTRABASS PRO front panel

POWER switch. This switch puts the ULTRABASS PRO into operation.

Digital Subharmonic Processor Section

POWER LED. This LED lights up to indicate that the unit is connected to a mains outlet and that the unit is switched on.

With the PROCESS switch the signal to the subharmonics generator is switched on or off. If set to OUT, the unit is in bypass mode. The crossover remains active but no harmonics are added to the signal i.e., the bass effect signal is neither sent to the main outputs nor to the subwoofer.

+The X-OVER function and the SATELLITE LEVEL control are still active in bypass mode (PROCESS OFF).

FREQUENCY control. This control governs the highest frequency which is sent to the digital harmonics processor. It thus affects the frequency range in which the ULTRABASS PRO works. This is one of the main controls to influence the sound of the unit.

The DYNAMIC PUNCH control sets the threshold for the digital frequency shifter of the ULTRABASS PRO. Signals below the threshold are not processed. With this control it is possible to prevent the processing of rumble which is not part of the music signal. It is also possible to add depth and punch just to the bass drum for instance.

ACTIVE LED. This LED lights up as soon as subharmonics are being generated. This depends on the DYNAMIC PUNCH control settings.

The LOW/ULTRA-LOWswitch sets the subharmonic processor to produce either normal low subharmonics (1 octave) or ultra-low subharmonics (2 octaves). Use the ULTRA-LOW setting only if the used speaker system can handle extremely low frequencies.

You can adjust the punch or warmth of the generated low frequencies with the BASS MODE control. If the control is turned fully counterclockwise (ULTRA-LOW), only the produced subharmonics are sent to the subwoofer and added to the satallite output (ULTRABASS switch in satellite section “ON”). As you turn the control clockwise (PUNCH), the original low frequencies of the program material are gradually added to the subharmonics, which gives the bass more power and “punch”. The optimum setting largely depends on the program material and your personal sound perception. Never hesitate to experiment!

BASS LEVEL control. With this control you can determine the amount of added bass frequencies, within a range from 0 (full attenuation) to 6 (max. effect). Please observe the power rating of your system!

BASS LEVEL meter. The amount of generated bass signal is shown by this meter.

Bass limiter section

The LIMITER IN / OUT switch activates or deactivates the bass limiter. The limiter’s task is to protect the loudspeaker system against overloading. In particular, if the system has no separate subwoofer, the level peaks need to be controlled so that extreme diaphragm displacement does not lead to speaker damage.

THRESHOLD control. The limiter limits the level of the newly generated bass signal to the adjusted value, the threshold control can be set within a range from 0 dB to “OFF” (limiter off).

+The normal signal is not limited! To prevent damage to your speakers the same safety margin with respect to the output level should be observed as with normal operation without the

ULTRABASS PRO.

8 1. INTRODUCTION