User manual DYNACORD POWERMAX 230

[. . . ] To reduce the risk of electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when servicing the appliance. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains 3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage. [. . . ] The PowerMax12 crossover function eliminates the often complained about "lack-of-punch-and-definition", like it is common for conventional active musical instrument reinforcement systems. Its excellent dynamic range of more than 116dB, the extremely low noise level and the outstanding price-performance ratio makes the PowerMax230 Controller an advantageous alternative to conventional crossover and controller solutions ­ even in the critical field of permanent installation. Input "A" and "B" level controls These controls are normally set to their "0"-marked (detent) center position. If needed or desired, the controls can be used to individually adjust the input levels of the channels "A" and "B". The green "Signal" LEDs indicate that audio signals are present at the inputs. The red "Peak" LEDs light whenever the audio signal is clipped inside the PowerMax230 which might result in distortion. In case the "Peak" LEDs light continuously, lowering of the input levels is recommended to maintain the entire dynamic range. Lo-EQ control This control is normally set to its center (6dB) position and it is used to correct the frequency response of the sub woofer systems. When the control is set to its clockwise margin, low bass frequencies are amplified by +12dB. The audio signal stays unaltered when the control is positioned at its counter-clockwise margin. It is used to increase the audio level in the 4kHz range. Setting the control to its clockwise margin results in no change in the frequency response but delivers the farthest coverage of the sound reinforcement system. Setting the control to its counter-clockwise margin provides pleasant audio even in the near field of the loudspeaker systems. The control is used to increase the audio signal's high frequency range which allows to accomplish improved intelligibility and brilliance even when using loudspeaker systems with diminished treble characteristics. Setting the control to its counter-clockwise margin leaves the high frequency response unaltered. This sets the crossover frequency between sub woofer (LO OUT) and full-range cabinets (HI OUT) to 100Hz. reproduction of the fundamental frequencies of the vocals is mainly taken care of by the full-range cabinets. Best results in coverage and vocal dynamic are achieved when shifting the crossover frequency to approximately 140Hz; a setting that gets widely used in live music sound reinforcement applications. setting the crossover point at approximately 70Hz results in optimally locatable vocals and average coverage. This setting is often used when reproducing CDs or other pre-recorded audio programs. with the PowerMax12 x-over function , setting the crossover frequency is extremely uncritical. Often enough, when the system is operated at medium sound pressure levels, changes are not registered. [. . . ] Fuse holder When switching the mains voltage always disconnect the appliance from the mains. When changing the mains voltage range, replacing the mains fuse by the appropriate type is absolutely mandatory. Correct types and values are marked on a label on the rear panel of the appliance. Mains connector Please, make sure to only use the supplied mains cord to connect the appliance to a mains wall outlet. [. . . ]