Carver PT 2400 Owners Manual

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CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL 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 of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.Introduction..........................................................1 Unpacking and Paperwork...................................1 Features and Specifications pt1250...............................................................2 pt1800...............................................................4 pt2400...............................................................6 Controls and Functions pt1250...............................................................8 pt1800/2400....................................................10 Installation pt1250 Location and General Precautions........................................12 Mechanical Considerations............................12 Rear Support for Road Applications..........................................12 Thermal Considerations..................................12 AC Power Considerations..............................12 Magnetic Leakage Considerations................................................12 Input Wiring....................................................12 Output Wiring.................................................13 Polarity............................................................13 70VDistribution Systems..............................14 Clipping Eliminator........................................14Installation pt1800/pt2400 Location and General Precautions........................................14 Mechanical Considerations............................14 Rear Support for Road Applications..........................................14 Thermal Considerations..................................14 AC Power Considerations..............................15 Magnetic Leakage Considerations................................................15 Input Wiring....................................................15 Output Wiring.................................................15 Polarity............................................................16 Dual Mono......................................................16 Bridged Mono.................................................16 70VDistribution Systems..............................17 Clipping Eliminator........................................17 Power ON Sequencing...................................17 Remote Power Control...................................18 Operating Tips Using the pt1250/1800/2400..........................19 In Case of Difficulty...........................................19 Care and Service Assistance...............................20 Warranty Information.........................................21 Safety Information Table Of Contents

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Introduction Congratulations on your purchase of a new Carver Professional Power Ampl\ ifier. It is backed by state-of-the-art engineering and manufacturing techniques to bring you t\ he best in quality craftsmanship and reliable performance. The pt1250, pt1800 and, pt2400 a\ re specially designed forpro touring applications. Their rugged construction and low profile make\ it ideal for sustaining the abuses of the road with reliability and space-saving economy. The pt1250 is rated at 625 watts perchannel into 4 ohms and 465 watts per channel into 8 ohms. The pt1800 is\ rated at 900 watts per channel into 4 ohms and 600 watts per channel into 8 ohms. The pt2400 is rated a\ t 1200 watts per channel into 4 ohms and 750 watts per channel into 8 ohms. The sophisticated protection\ circuits designed into this amplifier will protect your system should an unexpected fault occur. They also protect the amplifier from excessive temperature, continuous current limiting and shorted outputs. \ The balanced input uses a high quality, high common-mode rejection differential amplifier for exception\ al hum and noise rejection. The sequencing feature on the pt1800 and pt2400 allows a rack of amplifiers \ to be powered up from a remote location. The daisy-chain connection scheme causes each amplifier to tur\ n on in sequence, preventing the large in-rush current that can occur when an entire rack of amplifiers i\ s turned on simultaneously. This power amplifier was designed and manufactured by people with a lifetime commit\ ment to providing the worlds finest components for music and sound reproduction. Thanks for placing y\ our confidence in Carver Professional. We know your amplifier will provide many years of dependable service and \ reliable sound reproduction. Unpacking and Paperwork Carefully unpack the amplifier and keep the original carton and packing \ materials for future moving, shipment or long-term storage. After opening the box, please check for any visibl\ e signs of damage that were not apparent from the outside of the box. If you do encounter what appears t\ o be concealed damage, please consult your Carver Professional Dealer before installing the unit. Important Paperwork Make sure to save your sales receipt. Your receipt is extremely important to establish the duration of your Limited W arranty, and for insurance purposes. Next, make a note of the serial num\ ber which is located on the back of the amplifier. Record it in the space provided below for con\ venient reference. Model:________ pt1250 ________ pt1 00 ________ pt2400 Serial Number:___________________ Purchased at:_____________________ Date:___________________________ F i n a l l y , take a moment to fill out and return the Warranty Registration Card pa\ cked with the amplifier and return it to Carver Professional. This will allow us to keep you informed about\ new products as they become available. 1

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82 1 3 54Controls And Functions1. CLIPPING ELIMINATOR Pressing this switch turns on the clipping eliminator circuit. In this mode, the amplifier output remains undistorted even when overdriven by 8dB. 2. LEFT/RIGHTVOLUME CONTROLS 10-step attenuators that adjust the relative output level of the pt1250. The amount of attenuation corresponds to the front-panel marking, in dB. In parallel mono-mode, only the LEFTlevel control is active. 3. POWER SWITCH This turns the amplifier on. 4. POWER LED Ared LED that illuminates when the amplifier is on. 5. CH1/CH2 STATUS INDICATORS These LEDs display information about the operation of the amplifier. READY -“These LEDs illuminate green when the power is on and the amplifier is ready to operate. The READYLEDs illuminate red when the power switch is first turned on (while the power supply is stabilizing prior to the speaker output relays switching in), or when the amplifier is in protect mode. SIGNAL-“These LEDs illuminate yellow when a signal is present at the Speaker Output jacks to provide an indication of output power relative to full power (0dB). CLIP/PROTECT-“These LEDs illuminate red when the power switch is first turned on, when the output begins to clip, or whenever there is a fault condition detected that causes the output relay(s) to disengage. These fault conditions include excessive DC Offset, excessive heatsink temperature and short circuits at the speaker output(s). Note:The relays operate independently for each channel. Therefore, it is possible for one channel to operate normally while the other is in protect mode. pt1250

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This will insure that the resistance of the speaker wire is less than 5% of 4 ohms, resulting in a transmission loss of less than 0.5 dB. The multi-way binding posts can accept spade lug, bare wire or banana connections. Be sure that all the fine strands of the wire are twisted together and contained within the connector. If even one strand is loose and can touch the adjacent terminal, a short circuit may result. Class I (NEC) wiring must be used. The pt1800/pt2400 has two sets of output connections per channel. They alternate vertically top to bottom Ch.1, Ch.2, Ch.1, Ch.2. WARNING -Hazardous voltages may be present at the output terminals. Never contact the output terminals while operating the unit. WARNING -Channel 1 and 2 red binding posts are hot and should never under any circumstances be connected together or directly to ground. CAUTION -Make sure the total power handling capability of the loudspeakers or test loads are adequate to handle the high output capability of the amplifier.Carver Professional will not be responsible for blown loudspeakers. Consult the speaker manufacturer if in doubt. For minimum noise, do not connect channel 1 and channel 2 loudspeakers return (-) black binding posts together. However, doing so will not harm the amplifier or loudspeakers. Use both sets of binding posts if multiple loudspeakers are to be connected in parallel on one channel. Maintain a minimum of 2 ohms per channel. Polarity Loudspeakers must be connected with consistent polarity for phasing between them. Incorrect phasing will do no physical harm, but frequency response will be affected. The key is to make sure that both speakers connected to the speaker terminals are hooked up the same way. Connect (-) at the speaker outputs to (-) on the back of the speaker, and (+) at the speaker outputs to (+) on the back of the speaker. Dual Mono Figure 1 shows the rear panel connections for dual mono operation. All selections and connections should be made with the power OFF. Bridged Mono Figure 2 shows the rear panel connections for mono (bridged) operation. All selections and connections should be made with the power OFF. 16Figure 1

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Warranty InformationProfessional PowerAmplifiers: 5 years WHATIS COVERED: THIS WARRANTYCOVERS DEFECTS IN MATERIALAND WORKMANSHIPONLY.This limited Warranty DOES NOTextend to: 1) Damage caused by shipment, 2) damage caused by accident, misuse, abuse, failure to perform owner maintenance, or operation contrary to the instructions in the Carver Professional owners manual, 3) units on which the serial number has been defaced, modified or removed and 4) damage resulting from modification or attempted repair by any other person than authorized by Carver Professional. WHATWE WILLPAYFOR: Carver Professional will pay all labor and material expenses for items covered under this Limited Warranty. See the next section concerning shipping charges. WHATYOU MUSTDO TO OBTAIN WARRANTYSERVICE: In the event your Carver Professional product requires service, contact your Carver Professional authorized dealer/contractor o r contact Carver Professional (ATTN: Customer Service Dept.) 9300 N. Decatur, Portland, OR 97203 or call the Customer Service Department directly at (503) 978-8510. You will be directed to an Authorized Carver Service Station or receive instructions to ship the unit to the factory. Please save the original shipping carton and packing materials in case shipping is required. Please do not ship P a rcel Post. Include a complete description of the problem, the associated components and connections, and a copy of the purchase receipt. Initial shipping costs are not paid by Carver Professional. Return shipping costs will be pre-paid if repairs were covered by the scope of this warranty. YOU MUSTRETAIN AND PROVIDE YOUR SALES RECEIPTTO OBTAIN COVERAGE UNDER THIS LIMITED WARRANTY. The warranty Period begins from the date of first consumer purchase from an Authorized Carver Professional Dealer. LIMITATIONS OF IMPLIED WARRANTIES: All implied warranties for merchantability and fitness for a particular purpose are limited in duration to the warranty period for your product, unless otherwise provided by the state law. EXCLUSION OFCERTAIN DAMAGES: In no event shall Carver Professional be liable for property or any other incidental or coincidental damages which may result from the failure of this product. If your Carver Professional product proves defective in material or workmanship, the liability of Carver Professional shall be limited to the repair or replacement, at the option of Carver Professional, of any defective part. STATE LAWS MAYDIFFER: Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to you. This warranty gives you specific legal rights, and you may have other rights which vary from state to state. OTHER IMPORTANTPROVISIONS: Carver Professional reserves the right to make changes in design and improvements to its products without the responsibility of installing such changes to improvements on products previously sold by Carver Professional. We suggest that you attach your purchase receipt to this Warranty and keep both documents in a safe place. Thank you for your choice of a Carver Professional A m p l i f i e r. NOTE: The following warranty is exclusive to the United States and its possessions and territories. Please see your Carver Professional dealer or distributor for the correct warranty information in your area or locale. 21