User manual RENKUS-HEINZ P3501

[. . . ] OPERATION MANUAL P3500 · P3501 Dual Channel Power Amplifiers PK-xxx-A Plug-In Controller Modules P3500/P3501 OPERATION MANUAL Cautions CAUTION TO AVOID ELECTRIC SHOCK, DO NOT INSERT FINGERS OR OBJECTS INTO ANY OPENINGS IN THE CABINET Sicherheitsvorschriften VORSICHT UM ELEKTRISCHEN SCHLAG ZU VERMEIDEN, KEINE FINGER ODER GEGENSTÄNDE IN ÖFFNUNNGEN DES GEHÄUSES STECKENN WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE WARNUNG: ZUR VERMEIDUNG VON FEUER ODER ELEKRISCHEN SCHLÄGEN DAS GERÄT NICHT MIT REGEN ODER FEUCHTIGKEIT IN BERÜHRUNG BRINGEN Erklärung der graphischen Symbole Der Blitz mit nach untenzielendem Pfeil in einem gleichseitigen Dreieck weist den Benutzer auf das Vorhandensein einer unisolierten, "gefährlichen Spannung" im Gehäuse hin, die stark genug sein kann, einer Person einen gefährlichen elektrischen Schlag zu versetzen. Explanation of Graphical Symbols The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the use to the presence of uninsulated "dangerous Voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans. The exclamanation point, within an equilateral triangle is intended to alert the users to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. Das Ausrufezeichen in einem gleichseitigen Dreieck weist den Benutzer auf wichtige Betriebs- und Wartungsvorschriften in den beiliegenden Unterlagen des Gerätes hin. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN VORSICHT GEFAHR EINES ELEKTRISCHEN SCHLAGES NICHT ÖFFNEN VORSICHT!UM DAS RISIKO EINES ELEKTRISCHEN SCHLAGES ZU VERMINDERN, ABDECKUNG NICHT ENTFERNEN. KEINE BENUTZER BEDIENUNGSTEILE IM INNERN. [. . . ] "Mode" Selector Allows the amplifier to be operated in either "stereo", "mono" or "bridged mono" modes. Stereo Mode When the Mode selector is positioned in the Stereo Mode (center position), the two amplifier channels operate independently as a stereo amplifier; i. e. , input connector #1 drives amplifier channel #1 and input connector #2 drives amplifier channel #2. Both input attenuators are active to allow different level settings for each channel. Mono Mode In the Mono Mode (far right position), input # 2 is disabled and the two amplifier channels operate in parallel from a single input (input # 1). This eliminates the need to install a jumper cable to operate the amplifiers in parallel. The outputs are separate and in phase and both input attenuators are active to permit different level settings for each channel. Bridge Mode This mode allows the two amplifier outputs to be strapped or "bridged" to produce a single output with double the power capabilites of a single channel. Both channels are driven from a single input (input # 1), but out of phase. Both input attenuators are active and must be set to the same level. Note that in bridging mode both sides of the output should be considered hot and should not be grounded. R LO OPING/P R LO OPING/P OC ES SED P1 G MONO STEREO BRIDGE P2 + P3 - OC ES SED 7 8 9 Input Connections Output Mode Selector 9 P3500/P3501 OPERATION MANUAL Loudspeaker Controller Modules PK-xxx-A Controller Module P3500 Modules If you hav a model P3500 amplifier, it will include either a plug-in PK-xxx-A loudspeaker controller module (see above photograph) or a PK-BLANK-A "blank" card. If the module is a PK-xxx-A controller module, the model number of the associated loudspeaker will be labeled on the front of the module below the two loudspeaker protection LED's. If the module is a PKBLANK-A "blank" card, there will be no loudspeaker model number on the face of the module. PK-xxx-A Loudspeaker Controller Module PK-xxx-A controller modules are loudspeaker specific modules (the xxx is associated with the model number of the associated loudspeaker). The modules provide protective circuitry for that specific loudspeaker model along with electronic crosssover, response smoothing and, where appropriate, low/mid frequency time alignment. The protective circuitry protects the transducers from overheating (thermal overload) and the damage caused by high level transients. Protection against damage from over excursion, a problem associated with low frequency drivers is also provided. The operating parameters of PK-xxx-A controller modules are preset during manufacture to match a specific loudspeaker and are not user adjustable. Do not attempt to change or modify them in any way. PK-BLANK-A Blank Module PK-BLANK-A cards are used when a controller module is not needed. Note: If your amplifier is a P3501, it will not have facilities for a plug in module and will not include the two loudspeaker protection LED's found on the P3500. 10 P3500/P3501 OPERATION MANUAL P3500/P3501 Block Diagrams Block diagrams of the P3500 and P3501 are shown below. Please notice that in the P3500, the Channel 1 and Channel 2 Looping/Processed Outputs are "processed" signals that can be used to drive other amplifiers. Vol. Amp. High Pass Filter Parametric EQ Delay Circuit Low Pass Filter Excursion Limiter Peak Limiter Thermal Limiter/ Anti-Clip Ch. 1 Amp. Channel 1 output to loudspeakers Diff. Amp. Channel 1 Looping/ Processed Output Mono Stereo Bridge Ch. Amp. High Pass Filter Parametric EQ Delay Circuit Low Pass Filter Excursion Limiter Vol. [. . . ] Indicates that the protective circuitry for that channel has been activated. Check for a shorted line on that channel. Turn the amplifier "off" and then "on" again to see if the protective circuitry will reset. If it does, overheating was probably the problem and the temperature has dropped to a safe level. Signal LED's are red continuously a single Status LED is glowing red; no sound from one channel Indicates that the loudspeaker connected to that channel was receiving too much power and the controllers' protective circuitry has been activated and reduced the signal level. [. . . ]