CP1800 - Power amplifier ELECTRO-VOICE - Free user manual and instructions

USER MANUAL CP1800 ELECTRO-VOICE

The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user 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 persons

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the literature accompanying the appliance. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Do not expose this apparatus to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on this apparatus. Clean only with a dry cloth. Do not block any of the ventilation openings. Install in accordance with the manufactures instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Only use attachments/accessories specified by the manufacturer. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped To completely disconnect mains power from this apparatus, the power supply cord must be unplugged. For US and CANADA only:

Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrican for replacement of the absolete outlet. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit the apparatus. Unplug this apparatus during lightning storms or when unused for long periods of time.

These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that ontained in the Operating Instructions unless you are qualified to do so. Refer all ervicing to qualified service personnel. 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 Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure), respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary parts) has to be 6 mm and needs to be minded at all times. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only rmissible when using original parts. Altering the circuitry without prior consent or advice is not legitimate. Any work security regulations that are applicable at the location where the appliance is being serviced have to be strictly obeyed. This applies also to any regulations about the work place itself. All instructions concerning the handling of MOS - circuits have to be observed. NOTE: SAFETY COMPONENT ( MUST BE REPLACED BY ORIGINAL PART )

DESCRIPTION Congratulations! With buying a Electro-Voice CP-SERIES power amplifier you have chosen an appliance that employs most advanced technology. CP-Series power amps combine outstanding audio performance, highest reliability and operational safety. The audio performance of CP power amps are simply extraordinary. Optimised power supply units employing low-leakage toroidal transformers and the consistent use of Class-H technology provide extensive headroom far above the stated nominal output. At the same time this contributes to a reduction in weight and power dissipation. The CP-Series is designed in Class-H technology, i.e. the power amp provides extremely fast, signaldependent operating voltage switching, which results in doubling the regular supply voltage when needed. Compared to Class-AB power amps, Class-H power amps generate by far less power dissipation at identical output. Consequently, reduced leakage power or dissipation is synonymous to less waste heat – energy is used more efficiently. As a result, installing Class-H power amps within rack shelf systems is possible with less space between appliances. In addition to that and despite offering identical output, power consumption is a lot less than in Class-AB operation. Electro-Voice CP-SERIES power amps have been designed to fulfil even the most demanding requirements of touring applications. CP-Series amps are protected against thermal and electrical overload, short circuit and the occurrence of HF/DC at the outputs. Back-EMF-Protection eliminates the risk of the output transistors being damaged by electrical energy back-feed. The power outputs are switched via relay with a time delay during soft-start. An inrush current limiter prevents mains fuses from blowing. Mechanical construction and workmanship also comply with the highest precision manufacturing standards. The rigid sheet steel chassis even resists the most wearing tour operation. Two three-speed high performance fans (off/slow/fast) guarantee outstanding thermal stability at absolute low running noise. The ventilation is directed front-to-rear allowing trouble-free operation even in smaller amp-racks. The electronically balanced inputs are carried out via XLR-type connectors. Direct-Outs for through connecting the audio signal are also provided via XLRM-type connectors. Input Routing allows selecting DUAL (stereo) or PARALLEL (monaural) operation mode. By means of the separate BRIDGED OUTconnector and a Bridged Mode-switch, switching to „Mono Bridged“ operation is truly uncomplicated as well. The recessed mounted dB-scaled level controls ensure reliable protection against mechanical damage. These particularly precise, secure to operate detent-potentiometers are located on the front panel. CP-Series power amps provide the opportunity for retrofitting an internal analogue signal processor board with x-over and filter functions. The easily readable LED display provides a quick overview of the power amp’s current operational status. The power outputs CHANNEL A, CHANNEL B and BRIDGED OUT are carried out as extremely durable SPEAKON-type connectors. Also located on the rear panel is a Ground-lift switch, which helps eliminating ground-noise loops by separating the power amp’s enclosure from the circuit ground. In normal operation, all CP-Series power amps are capable of driving loads as low as 2ohms. In MonoBridged mode the allowable minimum load is 4ohms. This owner’s manual outlines and explains several other features of your CP-Series power amplifier. Please, make sure to carefully read all of it and mind the instructions.

DESCRIPTION UNPACKING & WARRANTY Carefully open t he packaging and take out the power amplifier. Next to the power amplifier itself, the package also includes this owner’s manual, a mains cord and the warranty certificate. Keep the original invoice, which states the purchase/delivery date together with the warranty certificate at a safe place. INSTALLATION NOTES Generally, installing or mounting power amps should be carried out in a way that guarantees continuously unopposed front-to-rear air circulation. Installation of appliances with opposite air circulation within one cabinet or closed rack shelf system is not recommended. When including an appliance in a closed cabinet or rack shelf system make sure to provide sufficient ventilation. Leave a gap of at least 60mm x 330mm (up to the cabinet’s top ventilation louvers) for air circulation between the rear of the power amplifier and the cabinet’s/rack’s rear inner wall. Make sure to leave at least 100mm of space above the cabinet or rack shelf system. Since temperatures inside of the cabinet or rack shelf system can easily rise up to 40°C during operation, bearing in mind the maximally allowable environmental temperature during operation for all other appliances installed in the same rack shelf system is mandatory (also refer to “MAINS OPERATION AND RESULTING TEMPERATURE”). Caution: For trouble-free operation exceeding the maximally allowable environmental temperature of +40°C is not permissible. The use of installation rails or optionally available “rear-rack-mount” rails is strongly recommended when installing the appliance in a rack shelf system or cabinet to prevent the front panel from bending. The power amplifier has to be protected against: dripping or splashing water, direct sunlight, high temperatures or direct influence of heat sources, high humidity, extensive dust and vibrations. Condensation on internal parts may occur when transporting the power amplifier from a cold into a warmer environment. In that case operation is only permissible after the appliance has gained the new temperature (after approximately one hour). If foreign objects or liquids have entered the power amplifier’s enclosure make sure to instantly separate the appliance from the mains power and contact an authorised service centre for inspection before continuing operation.

FRONT PANEL Use the POWER switch, located on the front panel’s, right side to switch the appliance’s power on. The soft-start function limits against current inrush peaks on the mains, which in addition prevents the mains line protection switch from activating during power-on. The loudspeaker outputs are activated via relay switching with a delay of approximately 2 seconds to efficiently attenuate eventual power-on noise. The PROTECT LED lights during the delay time and the fans run at maximum speed. This is normal, confirming the immaculate operation of the protection circuitry. This indicator lights when the power amplifier has been switched on. Causes for the POWER-indicator not lighting are: the appliance is not connected to the mains or the primary fuse is defective. The PROTECT LED indicating that one of the internal protection circuits against thermal overload, short-circuit, Back-EMF, HF-occurrence at the output, etc., has been activated. The output relays interrupt the connected loads from the power amps while input signals are interrupted as well, preventing the connected loudspeaker systems and the power amplifiers themselves from being damaged. Whatever caused the fault – e.g. a short-circuited speaker cable – needs to be remedied. In case of thermal overload you have to wait until the power amplifier automatically regains normal operation. The SIGNAL LED lights as soon as an audio signal of approximately 30dB below full modulation is present at the output. The LED is dimmed when speaker cables are short-circuited or a protection circuit has been activated. The 0dB LED lights whenever the power amplifier is driven at its maximum. Higher input voltage does not result in higher peak output voltage. In addition, the 0dB indicator comes in handy when adjusting external limiters. This indicator lights as soon as the integrated dynamic audio signal limiter is activated and the power amplifier is driven at the clipping limit or generally at its maximum capacity. Short-term blinking is not a problem, because the internal limiter controlls input levels of up to +21dBu down to a THD of approximately 1%. If, on the other hand, this LED lights constantly, reducing the volume is recommended to prevent the loudspeaker systems connected from being damaged by probable overload. Detent potentiometers scaled in dB (steps of 1dB) for adjusting the power amp’s overall volume. To prevent distortion in mixing consoles connected to your CP-Series amp, setting these controls to a value between 0dB and -6dB is generally recommended. The dB-scale provides direct indication of the control attenuation applied to the fixed internal amplification.

The inputs INPUT A & INPUT B are electronically balanced offering input sensitivity of +4dBu (1.23V) for direct connection of mixing consoles, signal processors, etc. The XLR-type connectors OUTPUT A & OUTPUT B are prepared for „through-connecting“ input signals to additional external power amps. The input signal is directly routed to these output connectors. There are no repeaters or other electronic components within that signal path. Accordingly, input and output connectors of the corresponding channel are interconnected in parallel, offering permanent electrical connection, without regard to the setting of the Power-ON switch. Although having XLR-type output connectors, some mixing console models provide unbalanced output connection only. When using mixers with unbalanced outputs, bridging PIN1 and PIN3 of the power amp’s input connectors or leaving PIN3 of the cable’s plugs unconnected is necessary. Otherwise, when feeding in unbalanced audio signals via PIN3 (b, -, „cold“) and PIN2 (a, +, „hot“), strange humming and HF-interference may occur, which very likely will damage the power amplifier and/or the connected speaker cabinets. NF-CONNECTION CORDS Choosing high-quality balanced cables (two conductors for the audio signal plus separate shielding mesh) with XLR-type connectors is recommended for LF-signal connection. Although connecting unbalanced cables to the power amplifier inputs is possible as well, using balanced cables is always preferable. A great number of today’s audio appliances employ balanced outputs. With balanced cabling, the shield connects all metal enclosure parts and therefore efficiently eliminates the introduction of external interference – mostly noise and hum. XLR-type connector pin-assignment XLR (male) XLR (female) PARALLEL The input connectors of channel A and channel B are electrically connected in parallel when the selector switch is set to PARALLEL. However, individually controlling the volume of both channels is still possible via the corresponding level controls A and B. DUAL If the selector switch is set to DUAL, the audio signals of channels A and B are independently amplified.

Power amp output connection for the two channels A (left) and B (right) is provided via SPEAKON-type output connectors. A plastic cover to prevent inadvertent erroneous connection protects the BRIDGED OUT connector. Make sure to remove the cover only when actually operating the power amplifier in Bridged-Mode. BRIDGED MODE With the BRIDGED-MODE switch being engaged, using the channel A input for audio signal feed is mandatory, since input B provides no function. While the amplifier of channel A operates as usual, the audio signal is internally inverted and routed to the amplifier of channel B. Both amps – A and B – now work in push-pull operation to provide doubled output voltage at the BRIDGED-OUT connector. The regular output voltage of each amplifier channel A / B is still present at the corresponding output connector CHANNEL A or CHANNEL B. However, using these signals is not recommendable because of the aforementioned phase inversion. Operating the power amp in Bridged Mode with loads of 2ohms connected is not allowable. CAUTION: Extremely high voltages might be present at the BRIDGED OUT connector during Bridged-Mode operation. The connected loudspeaker systems have to be capable of handling such high voltages. Please make sure that power handling specifications as stated in the documentation supplied with your speaker systems match the specifications of the power amplifier. GROUND-LIFT SWITCH The ground-lift switch allows eliminating noise loops. If the power amplifier is operated together with other equipment in a 19“ rack-shelf, setting the switch to its GROUNDED position is recommended. If the power amplifier is operated together with appliances with differing ground potentials, set the switch to its UNGROUNDED position. MAINS INPUT Under normal circumstances, the mains fuse only blows in case of fault. Replacing the fuse is only permissible when using a new fuse of the same type with identical amperage, voltage and blow characteristics. If the mains fuse blows more often, please contact an authorized service centre. The high-performance mains cord supplied with your power amplifier complies to applicable safety regulations, plus that its diameter corresponds to the power amp’s power output capacity. Make sure to use the supplied mains cord for connecting the power amp to the mains, if possible. Using mains cords with smaller diameters results in higher leakage and consequently reduced maximum power output capacity. At 100V and 120V units the mains fuse is installed internally. This is fore safety reasons. In case of a blown mains fuse please contact a qualified service personnel for servicing.

The following tables allow determining power supply and cabling requirements. The power drawn from the mains network is converted into output power to feed the connected loudspeaker systems and into heat. The difference between power consumption and dispensed power is called power dissipation (Pd). The amount of heat resulting from power dissipation might remain inside of a rack-shelf and needs to be diverted using appropriate measures. The following table is meant as auxiliary means for calculating temperatures inside of a rack-shelf system/cabinet and the ventilation efforts necessary. The column „Pd“ lists the leakage power in relation to different operational states. The column „BTU/hr“ lists the dispensed heat amount per hour. CP1800 idle Max. Output Power @ 8Ω (1) Max. Output Power @ 4Ω (1) Umains [V] Imains [A] Pmains [W] Pout [W] Pd (5) [W] BTU/hr(1) 230V 0,39

Rated Output Power (0dB) @ 4Ω Alert (Alarm) Mode (-3dB) @ 4Ω (1) 230V 17,0

Rated Output Power (0dB) @ 4Ω Alert (Alarm) Mode (-3dB) @ 4Ω (1) 230V

Max. Output Power @ 2Ω (1) Sine Modulation (1kHz) (2) VDE-Noise (3) 1BTU = 1055.06J = 1055.06Ws (4) 10% Mains Over Voltage (5) Pd = Leakage Power The following factors allow direct proportional calculation of the mains current Imain for different mains supply voltages: 100V = 2.3; 120V = 1.9; 240V = 0.96.

Max. Output Power @ 4Ω (1) 230V 11,0

1/8 Max. Output Power @ 4Ω Normal Mode (-10dB) @ 4Ω Rated Output Power (0dB) @ 4Ω Alert (Alarm) Mode (-3dB) @ 4Ω (1) 230V 17,0

SPECIFICATIONS - Amplifier at rated conditions, both channels driven, 8Ω loads, unless otherwise specified. CP 1800 Load Impedance Maximum Midband Output Power THD = 1%, 1kHz, Dual Channel Rated Output Power THD < 0.1%, 20Hz ... 20kHz Max. Single Channel Output Power IHF-A Max. Single Channel Output Power Continuous, 1kHz, THD-1% Max. Bridged Output Power THD = 1%, 1kHz Maximum RMS Voltage Swing THD = 1%, 1kHz Power Bandwith THD = 1%, ref. 1kHz, half power @ 4Ω Voltage Gain ref. 1kHz Input Sensitivity at rated output power THD at rated output power, MBW = 80kHz, 1kHz IMD-SMPTE 60Hz, 7kHz DIM30 3.15kHz, 15kHz Maximum Input Level Crosstalk ref. 1kHz, at rated output power Frequency Response ref. 1kHz Damping Factor 1kHz Slew Rate Signal to Noise Ratio, Amplifier A-weighted Output Stage Topology Power Requirements Power Consumption 1/8 maximum output power @ 4Ω Protection Cooling Safety Class Dimensions (W x H x D), mm Weight Optional

1800W 1200W 62V 10Hz ... 60kHz 32,0 dB +3.2 dBu (1.12 Vrms) < 0.05% < 0.02% < 0.01% +22dBu (9.76 Vrms) <- 80dB 15Hz ... 40kHz (+/- 1dB) > 300 30 V/ms 105.5dB Class H 240, 230, 120V or 100V; 50 ... 60 Hz (factory configured) 500W Audio limiters, High temperature, DC, HF, Back-EMF, Peak current limiters, Inrush current limiters, Turn-on delay Front-to rear, 3stage-fans 483 x 88,1 x 386,8 15 kg (33 Ibs) Rear-rackmount 15,5“ (NRS 90262) 112930 Rear-rackmount 18“ (NRS 90264) 112933 - Depending on the ambient temperature, the unit might not operate continuously at 2 ohms load in Dual Mode or 4 ohms load in Bridged Mode.

SPECIFICATIONS - Amplifier at rated conditions, both channels driven, 8Ω loads, unless otherwise specified. CP 2200 Load Impedance Maximum Midband Output Power THD = 1%, 1kHz, Dual Channel Rated Output Power THD < 0.1%, 20Hz ... 20kHz Max. Single Channel Output Power IHF-A Max. Single Channel Output Power Continuous, 1kHz, THD-1% Max. Bridged Output Power THD = 1%, 1kHz Maximum RMS Voltage Swing THD = 1%, 1kHz Power Bandwith THD = 1%, ref. 1kHz, half power @ 4Ω Voltage Gain ref. 1kHz Input Sensitivity at rated output power THD at rated output power, MBW = 80kHz, 1kHz IMD-SMPTE 60Hz, 7kHz DIM30 3.15kHz, 15kHz Maximum Input Level Crosstalk ref. 1kHz, at rated output power Frequency Response -1dB, ref. 1kHz Damping Factor 1kHz Slew Rate Signal to Noise Ratio, Amplifier A-weighted Output Stage Topology Power Requirements Power Consumption 1/8 maximum output power @ 4Ω Protection Cooling Safety Class Dimensions (W x H x D), mm Weight Optional

2200W 1600W 72V 10Hz ... 60kHz 32,0 dB +4.7 dBu (1.33V rms) < 0.05% < 0.02% < 0.01% +22dBu (9.76 Vrms) <- 80dB 15Hz ... 40kHz > 300 35 V/ms 107dB Class H 240, 230, 120V or 100V; 50 ... 60 Hz (factory configured) 660W Audio limiters, High temperature, DC, HF, Back-EMF, Peak current limiters, Inrush current limiters, Turn-on delay Front-to rear, 3stage-fans 483 x 88,1 x 386,8 16 kg (35.2 Ibs) Rear-rackmount 15,5“ (NRS 90262) 112930 Rear-rackmount 18“ (NRS 90264) 112933 - Depending on the ambient temperature, the unit might not operate continuously at 2 ohms load in Dual Mode or 4 ohms load in Bridged Mode.

NOTES USA Telex Communications Inc., 12000 Portland Ave. South, Burnsville, MN 55337, Phone: +1 952-884-4051, FAX: +1 952-884-0043 Germany EVI AUDIO GmbH, Hirschberger Ring 45, D 94315, Straubing, Germany Phone: 49 9421-706 0, FAX: 49 9421-706 265 Subject to change without prior notice. www.electro-voice.com Printed in Germany 10/09/2003 / 361 858