Tech Notes

A crossover is a filtering device that separates the audio frequency spectrum and directs portions of that spectrum to a specific audio device. As an example, all sound reinforcement quality two-way loudspeaker enclosures have a passive crossover as part of the design that separates the audio spectrum into two bands of frequencies. This passive crossover is a bit like a traffic cop that directs the lows to the woofer and the highs to the horn.  

The electronic crossover is an external electronic signal processor that takes the place of the passive crossover that is in a full range loudspeaker enclosure. In the world of today's high performance sound systems, the electronic crossover minimizes the distortion associated with full range passive crossovers, when the sound reinforcement application includes the complete micing up of the entire backline of stage musical instruments. The Electronic crossover allows for increased performance from the sound system by enabling the loudspeaker system to be run as an active Bi-amped two-way,

ADDVERB, ADDVERB II, DSR 1000, & ULTRAVERBPress and hold the (-) and (5) keys at power up. ADDVERB IIIWith the power off press and hold the add/del and global buttons then power up. AUTOGRAPH, CEQ 28, AEQ 2800Press and hold the "MIDI" and "ASSIGN" keys at power up to reset the the memory. AUTOMATE, CEQ 28RThe reset command is sent via MIDI from and Autograph/CEQ 28. Connect the Autograph/CEQ 28 to the Automate/CEQ 28R in a MIDI loop. Turn the Autograph/CEQ 28 off and the Automate/CEQ 28R on. Pess and hold the "RECALL" and "STORE" keys on the Autograph/CEQ 28. Turn power on. The following display will appear: WARNING: RESET OF Automate/CEQ 28R MEMORY PROCEED WITH CAUTION!!! Now simultaneously press the left and right cursor keys. The display will change to: EXECUTE RESET Automate/CEQ 28R MEMORY EXIT Use UP or DOWN keys to Select Use the up or cursor keys to select the number of the Automate/CEQ 28R to reset. Press the softkey next to EXECUTE in the display to perform the memory reset. Pressing the softkey next to EXIT in the display aborts the reset.