Quad II Classic Owners Manual

Page 1

Service & Information Authorised QUAD Service Centres in the U.K. and North America www.quad hifi.co.uk If your QUAD equipment requires servicing (including valve replacement) you should return it to the dealer from whom the equipment was purchased. If you are abroad and there is no suitable dealer in your area, please contact the distributor for the country in which it was purchased or QUAD Electroacoustics Ltd. It is user's responsibility, whether the equipment is under warranty or otherwise, to ensure that equipment for service is returned carriage paid and in the original packaging. You should enclose a brief note with your name and address and the reason for returning the equipment. For information on authorised service centres worldwide contact QUAD Electroacoustics Ltd. A worldwide distributor list is available on the QUAD website: SPECIFICATIONS Quad II ClassicMonobloc valve power amplifier Input sensitivity775 mV RMS Power output15W RMS Output Impedance 8 Ohms THD @ 700 Hz0.8% @ 12w Residual hum and noiseBetter than 90 dB Frequency response10 Hz 20 kHz (±0.2 dB) Damping factor 11.75 @ 700 Hz (referred to 8 Ohms) Power consumption 90VA maximum Valves 2 x EF86, 2 x KT66, 1 x GZ34 Dimensions (mm) 335 x 121 x 171 Weight 8.3 Kg for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning and power line surges. Antenna Grounding: If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the lead in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. (Refer to diagram) Power Lines: An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside Read Instructions: All the safety and operating instructions should be read before the product is operated. antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal. Retain Instructions: The safety and operating instructions should be retained for future reference. Overloading:Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result Heed Warnings: All warnings on the product and in the operating instructions should be adhered to. in a risk of fire or electric shock. Follow Instructions: All operating and use instructions should be followed. Object and Liquid Entry:Never push objects of any kind into this product through openings as they may touch Cleaning: Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. dangerous voltage points or short out parts that could result in a fire or electric shock. Use a damp cloth for cleaning. Heat: The product should be situated away from heat sources such as radiators, heat registers, stoves, or other Attachments: Do not use attachments not recommended by the product manufacturer as they may cause hazards. products (including amplifiers) that produce heat. Water and Moisture: Do not use this product near water for example, near a bath tub, wash bowl, kitchen sink, Servicing:Do not attempt to service this product yourself as opening or removing covers may expose you to or laundry tub, in a wet basement; or near a swimming pool; and the like. dangerous voltage or other hazards. Refer all servicing to qualified service personnel. Accessories: Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, Damage Requiring Service:Unplug this product from the wall outlet and refer servicing to qualified service causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket personnel under the following conditions: or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the a) When the power supply cord or plug is damaged manufacturer's instructions, and should use a mounting accessory recommended by the manufacturer. b) If liquid has been spilled, or objects have fallen into the product Moving the Product: A product and cart combination should be moved with care. Quick stops, excessive force, and c) If the product has been exposed to rain or water. uneven surfaces may cause the product and cart to overturn. d) If the product does not operate normally by following the operating instructions. Adjust only those controls that are Ventilation: Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the covered by the operating instructions as an improper adjustment of other controls may result in damage and will often product and to protect it from overheating, and these openings must not be blocked or covered. The openings require extensive work by a qualified technician to restore the product to its normal operation. should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should not e) If the product has been dropped or damaged in any way. be placed in a built in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer's instructions have been adhered to. f) When the product exhibits a distinct change in performance this indicates a need for service. Power Supply Cords: Power supply cords should be routed so that they are not likely to be walked on or pinched by Replacement Parts: When replacement parts are required, be sure the service technician has used replacement items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the parts specified by the manufacturer or have the same characteristics as the original part. Unauthorised substitutions may result in fire, electric shock, or other hazards. point where they exit from the product. Safety Check:Upon completion of any service or repairs to this product, ask the service technician to perform Power Sources: This product should be operated only from the type of power source indicated on the marking safety checks to determine that the product is in proper operating condition. label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions. Polarisation: This product is equipped with a polarized alternating current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. Lightning: For added protection for this product during a lightning storm, or when it is left unattended and unused Warning: To resist the risk of fire or electrical shock, do not expose this product to rain or moisture. The product must not be exposed to dripping and splashing and no object filled with liquids such as a vase of flowers should be placed on the product. No naked flame sources such as candles must be placed on the product. Service: Equipment for sevicing should be returned to the suplying dealer, or to the appointed service agents for your area. The addresses of Service Agents for the UK , USA and Canada are listed on the rear cover of this manual. Important Safety Precautions - Please Read Carefully! IMPORTANT NOTICE TO UK USERS The appliance cord is terminated with a UK approved mains plug fitted with a 5A fuse. If the fuse needs to be replaced, an ASTA or BSI approved BS1362 fuse rated at 5A must be used. If you need to change the mains plug, remove the fuse and dispose of this plug safely immediatelyafter cutting it from the cord. Connecting a Mains Plug The wires in the mains lead are coloured in accordance with the code: Blue: NEUTRAL Brown:LIVEGreen & Yellow: EARTH. As these colours may not correspond to the coloured markings identifying the terminals in your plug, proceed as follows: The wire coloured BLUE must be connected to the terminal marked with the letter N or coloured BLUE or BLACK. The wire coloured BROWN must be connected to the terminal marked with the letter L or coloured BROWN or RED. The wire coloured GREEN & YELLOW must be connected to the terminal marked with the letter E or coloured GREEN or GREEN & YELLOW or marked with the Earth Symbol GREEN & YELLOW (EARTH) BLUE (NEUTRAL) (LIVE) BROWN FUSE (5 A) WARNING The mains power switch for this appliance is located on the rear panel. To permit free access to this switch the apparatus must be located in an open area without any obstructions. CAUTION Use of controls or adjustments, or the performance of procedures other than those specified may result in hazardous radiation exposure. IMPORTANT NOTICE The IEC socket which fits into the mains connector located on the rear panel of this unit is a moulded unit. If this unit becomes damaged in any way do not attempt to repair or connect a replacement plug to the cord. Consult your dealer to purchase a suitable replacement. WARNING This equipment uses valves (tubes) which get hot. Do nottouch the glass envelopes of the valves while the equipment is in use or within 30 minutes after the equipment has been switched off. USA IAG America, Inc. 15 Walpole Park South Walpole MA 02081 Tel: +1 508 850 3950 U.K. QUAD Electroacoustics Ltd. IAG House, Sovereign Court, Ermine Business Park, Huntingdon, Cambs PE29 6XU, England. Tel:+44 (0)1480 447700 Fax:+44 (0)1480 431767 CANADA Korbon Trading Ltd 6800 Kitimat Road Units 19 20Mississauga Ontario Tel: +1 905 567 1920 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 maintenance (servicing) instructions in the literature accompanying the appliance. TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-REMOVEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNELCAUTION! RISK OF ELECTRIC SHOCK DO NOT OPEN ADVERTISSEMENT: RISQUE DE CHOC ELECTRIQUE- NE PAS OUVRIR g Example of Antenna Grounding as per National Electrical Code Antenna lead in wire Grounding Conductors (NEC Section 810-71) Ground clamps Electric service equipment Power service grounding electrode system (NEC ART 250, Part H) Antenna discharge unit (NEC Section 810-20) Ground clamps QUADII Classic Manual 0405 Issue 2

Page 2

USER GUIDE INTRODUCTION The QUAD IIClassicpower amplifier is a re creation of the legendary QUAD II amplifier designed by Peter Walker, founder of QUAD and one of the guiding lights of early Hi Fi reproduction. Like the QUAD II, the QUAD II Classicuses the uniquely simple and timeless circuit topology developed by Walker. To comply with modern international manufacturing and other standards certain aspects of the original amplifier have had to be changed but these are almost entirely superficial. The fundamentals are as they were when the original Quad II first saw the light of day, fifty years ago. The QUAD II Classicis designed for the music lover. We make no exaggerated performance claims and are content to let the results speak for themselves. Thank you for purchasing this QUAD equipment. We can only hope that it will bring you many years of listening pleasure, and that, like its illustrious predecessor, it will be a treasured possession for you and for future generations of music lovers. Although this equipment has primarily been designed for use with QUAD components, it may be connected to any high quality audio source component and loudspeaker system. PRELIMINARIES The QUAD IIClassicamplifier carton contains: ! QUAD II Classicvalve power amplifier ! One IEC mains lead fitted with an appropriate mains connector ! Instruction Manual and Warranty Registration form ! One set of packing materials. Consult the dealer from whom you purchased the equipment if any item is missing. Please retain the packing materials for future transportation of the product. Please read this manual in full before installing your new amplifier and retain the manual and your purchase receipt for future reference. INSTALLATION The mains operating voltage of the unit is indicated on the rating plate attached to the unit. If this voltage does not match the mains voltage in your area, consult your QUAD dealer about converting the unit. The fuse rating should be: 220 240V (UK, Korea, etc.) T 1AL 20mm Slow Blow 100 120V (USA, Japan, etc) T 2AL 20mm Slow BlowKT 6 6 KT 6 6 As the valves start to wear out the sound will become less well defined and a lack of dynamics and power will become evident. When replacing valves it is essential to use the highest quality available. Poor quality valves will adversely affect the sound quality and may in extreme cases damage the amplifier. When replacing the valves do so as pairs, and for best results use matched pairs. Output Transformer After installing or changing the wiring to your speakers keep the volume control at zero, let the amplifier warm up and turn up the main volume gradually. If you don't hear sound, switch off immediately and investigate. The output transformer is the most expensive component in a valve power amplifier. It is designed to match the high voltage, low current conditions in which output valves operate to the low voltage high current requirements of a loudspeaker. Although robust and capable of lasting a lifetime, an output transformer can be damaged and, in extreme cases wrecked, by careless use. If you play a valve amplifier into a short circuit, the output transformer will soak up a lot of energy before failing but if the short persists the transformer could be damaged. Remember, operating a valve amplifier at high output levels with noloudspeaker connected can also damage an output transformer. Overall Volume Levels Always turn the volume control down before changing sources as the resulting surge coulddamage your loudspeakers. Output levels from different source components in a high fidelity system can vary widely. A CD player can produce levels significantly higher (>18 dB ) than an FM tuner. It follows that the position of the volume control is not a guide as to 'how loud' the equipment will go. Though the overload characteristics of the QUAD II Classicare such that you will be able to play your music at surprisingly high levels, if the sound is distorted, you are overloading your equipment whatever the position of the volume control. CARE AND CLEANING The surface of the equipment may be cleaned with a damp cloth provided that the power has been removed first. Solvent based cleaning materials should not be used as they may damage the paint finish. GUARANTEE AND PRODUCT REGISTRATION Your QUAD equipment is guaranteed against any defect in material and workmanship for a period of one year from the date of purchase with the exception of the valves, which are warranted for three months. Proof of purchase is required for warranty claims. Please complete and return the enclosed Warranty registration form. Within the warranty period QUAD will undertake replacement of defective parts free of charge provided that the failure was not caused by misuse, accident or negligence. Your statutory rights within the territory in which you purchased the equipment are not affected by this warranty. QUAD carries out a regular review of its products and reserves the right to adjust the specifications and performance from time to time. There are no user replaceable or serviceable parts inside this equipment. Unauthorised attempts to service or modify this product will void the warranty. CONCLUSION Apart from a few very specialised fields, the valve has been obsolete in almost every walk of life for at least thirty years yet it remains the equipment of choice for thousands of music lovers and audiophiles the world over. Audio amplification has been with us for ninety years and for over fifty of those ninety, the name of QUAD has been synonymous with the best the world has to offer. In producing the QUAD II Classic,we have re visited our very roots. We hope the result lives up to your highest expectations. 1 4