User manual ELECTRO-VOICE 660 DATASHEET

[. . . ] NE PAS OUVRIR. DC I NPUT 24V CIRC UIT T O CH ASSIS SWITCH 16 + GROU NDED U NGRO UND ED VO R ÖF F NEN DES G ER ÄTES NET Z ST ECKER Z IEHEN 1 23 45 90225 20 19 18 17 B A 9 A 10 11 T FOR 230V 4A T8A F OR 115V 12 A NO U SER SER VICEABLE PARTS IN E. REFER SERVIC SID ING TO QUALIFIED SERVICE PERSONNEL. 15 B POWER VOLTAGE SELECT OR 115V 230V INPUT DPA 4140 121629 14 ADDR ESS AC MAINS INPUT 115V /230V AC 50-60 Hz M ADE IN GERMANY CAUTION: FORCONTINUED PROT ECTIONAGAINST RISK OF FIRE REPLACE WITHSAME TYPE AND VALUE F U IND SE ICATED . ATTENTION: REMPLACERPARUN FUSIBLE DE MEME TYPE COMME IND IQUE. B A A B AD DRESS O UT PUT VO LTAGE 21 CA UTION R ISK OF ELEC TRIC SHOCK DO N OPEN OT THRU IN REMOTE CONTROL WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICSHOCK, DONOT EXPOSE TH APPLIANC TO R N ORMOISTU IS E AI RE. AVIS: RISQUE DE CHOC ELECTRIQUE. [. . . ] Connection has to be performed by inserting the supplied 5-pole plug into the power output socket (17). Switching the output voltage to 70V, 50V or to low impedance operation (4 ohms) is possible using the plug-in bridge B411 on the printed board assembly 84187 (660) respectively 84175 (DPA 4140) (see also paragraph 7). figure 3 connection of the power output 5. 2 POWER OUTPUT for 100V (70V or 50V) loudspeaker systems If the distance between the amplifier and the loudspeakers exceeds 50 m, it is recommended to operate the speaker systems using 100V matching transformers, to reduce line attenuation. This additionally offers a simple way of distributing the output power capacity. In this way it is possible to connect a maximum of as many loudspeaker systems as it takes until the total power consumption of the entire speaker network equals the power output capacity 29 of 200W (connection impedance 50 ohms) with the 660, respectively 400W (connection impedance 25 ohms) with the DPA 4140. Connection is performed using the 100V output (17) (see also figure 3). In a few special cases it is also possible to operate the loudspeaker systems with 70V or 50V output voltage (see also paragraph 7). Caution It is possible that during operation shock-hazard output voltages can be present at the POWER OUTPUT connector (>34V peak value). Thus, the connected loudspeaker groups have to be installed in accordance to applicable security standards and regulations (see also paragraph 8. 5. 2). 5. 3 SINGLE CALL and obligatory reception relays OVERRIDE BYPASS Combined with the PROMATRIX manager DPM 4000 or other external controls it is also possible to transmit single or collective calls with obligatory reception; i. bridging of possibly existing volume controls of the loudspeaker systems. For details on how to connect the outputs, please refer to figure 3; for the connection of relays, please refer to paragraph 5. 6 respectively the PROMATRIX handbook. 5. 4 POWER OUTPUT for low impedance loudspeaker systems Switching the output to 4 ohms allows the connection of low impedance loudspeaker systems (4-16 ohms) (see also paragraph 7 and figure 3). In this case the input level has to be reduced. - If the green LED indicator (1) does not light or is only briefly lit with the red CLIP-LED blinking at the same time, this signals the encountering of an overload or short-circuit condition at the output. In this case the impedance of the connected load has to be checked. Caution During normal operation the red CLIP-LED should only light briefly and shortly! 7. Switching the output voltage (only to be performed by a qualified service technician!) The 660 and DPA 4140 amplifiers allow the connection of 50V, 70V, 100V or low-impedance loudspeaker systems (4 ohms). They are factory-preset to an output voltage of 100 V. Switching the output voltage to 4 ohms, 50V or 70V can be performed by changing the bridge B411 on the power amplifier printed board assembly 84187 (660) or 84175 (DPA 4140): Caution Before opening the appliance, make sure to disconnect the mains and/or battery power source! - To open the appliance, the top panel has to be removed. - The bridge B411 (yellow wire) has to be removed from the contact B407 and re-attached to the desired contact (see table 1) (see also figure 8 respectively figure 9). - he coding-bridges S405 and S406 for the output recognition have to be inserted according to the illustration in figure 5. (the inserted coding-bridge is marked in black) The top panel has to be re-attached. Note By using a waterproof marker pen and after switching the output voltage, the newly set value has to be marked in the filed "OUTPUT VOLTAGE" on the rear panel of the appliance. 31 output 100 V 70 V 50 V 4 ohms bridge B411 to B407 B408 B409 B410 table 1 bridge B411 settings switching the output voltage figure 5 coding-bridges S405 / S406 settings output recognition OUTPUT CONFIG Caution It is possible that during operation shock-hazard output voltages can be present at the POWER OUTPUT connector (>34V peak value). Thus, the connected loudspeakers have to be installed in accordance to applicable security standards and regulations (see also paragraph 8. 5. 2). 8. [. . . ] Since it is possible that during operation the temperature inside the rack system increases by 10° C, the maximum allowable ambient temperatures of the rest of the incorporated modules and appliances within a specific rack-shelf or rack-case have to be taken into careful consideration. Note To ensure trouble-free operation of the appliance, the maximum permissible ambient temperature of +40°C is not to be exceeded. 10. Ground lift switch CIRCUIT TO CHASSIS SWITCH The ground lift switch CIRCUIT TO CHASSIS SWITCH (19) provides the possibility to separate the signal ground from the enclosure (ground potential). This is mainly meant to eliminate noise-problems which are introduced through ground-loops, without jeopardizing the security. [. . . ]