{"product_id":"quad-66-systeem","title":"Quad 66 system","description":"\u003cp\u003eStereo set: Quad 66 preamplifier    Quad 67 CD player Quad 606 mono amplifiers Quad ESL-63 speakers Gradient SW-63 Remote control  = Quad 66 preamplifier =  The Quad 66 is a high-quality preamplifier system with full remote control operation.  It comprises two units: a mains-powered preamplifier to which the various sound sources are connected, and a separate battery-powered control panel incorporating all the main function controls for operating the preamplifier and Quad CD player, or any other remote-controlled CD player using the same remote control language.  If the battery fails, the control panel can be powered directly from the preamplifier. A display on the main unit shows all selected functions.  The unit accepts inputs from seven sources: Disc, CD Radio, AV, Aux 1, Aux 2, and Tape (with off-tape monitoring).  A second tape recorder may be connected to the Aux 2 input, and both the AV and Aux 1 inputs have anti-hum loop circuitry.  The control panel has rotary volume and balance controls plus push buttons for Disc, CD play, Radio, AV, Aux 1 and 2, Tape, Tilt (2), Bass Step (2), Filter (2), Cancel, Standby, Search (2), Track, Pause, Stop, and Store.  The standby facility enables the 66, and any other equipment connected to the AC auxiliary outlet, to be switched on and off via the remote control panel.  = Quad 606 mono amplifiers =  The Quad 606 is a two-channel power amplifier designed for high-quality sound reproduction when used with a Quad 66 control unit or other source.  While Quad high-fidelity equipment is designed to reproduce music at realistic levels, there is a world of difference between the sound pressure levels produced by a string quartet and a heavy metal group.  Please be aware that very high sound pressure levels will also cause severe annoyance to neighbours.  = Quad ESL-63 speakers =   This speaker consists of two fixed electrodes and a diaphragm placed between them. When a high voltage is applied to the vibrating membrane to generate static electricity and an audio signal is sent to the fixed electrode, a Coulomb force acts between the vibrating membrane and the fixed electrode to move the vibrating membrane and produce sound. This method does not require any strength because the diaphragm moves uniformly over the entire surface. It can be set to a very light diaphragm and can be driven with very little energy. It also has advantages such as good impedance matching with air and no need for a cabinet. The ESL-63 has succeeded in generating all frequencies at one point based on this system.  Since a general electrostatic speaker is plane-driven and tends to be plane wave, the listening position was limited. To solve this problem, in the ESL-63, the fixed electrode is divided into seven concentric rings and a delay circuit is set for each of them. By generating a signal delay of approximately 24 µsec per stage from the inner circumference to the outer circumference, for a total of approximately 168 µsec, we have succeeded in generating a spherical wave from a flat vibrating membrane. By this, the sound source is located approximately 30 cm behind the vibrating membrane and can freely respond to changes in directivity caused by changes in frequency.  = Gradient SW-63 =  Gradient is a Finnish brand. It is a pair of subwoofers, each with two speakers configured as dipoles, inserted in a cabinet designed to mate perfectly with the Quad 63, also serving the important purpose of bringing the Quads to a more correct height from the ground. The set is very nice and seems to have in front of a single speaker.\u003c\/p\u003e\n\n\u003cp\u003e= Quad 66 preamplifier =  Frequency response: 15 Hz to 20 kHz Total harmonic distortion: 0.05% Input sensitivity: 3 mV (MM), 300 mV (line) Signal-to-noise ratio: 74 dB (MM), 93 dB (line) Output: 300 mV (line), 0.5 V (Pre out) Dimensions: 321 x 80 x 255 mm Weight: 3.3 kg Year: 1993  = Quad 67 CD player =  Disc format: CD Digital converter: Delta-Sigma, 18-bit, 64x oversampling Frequency response: 20 Hz to 20 kHz Signal-to-noise ratio: 100 dB Channel separation: 100 dB Total harmonic distortion: 0.002% Line output: 2 V Dimensions: 321 x 80 x 240 mm Weight: 3.5 kg Accessories: infrared remote control Year: 1993  = Quad 606 mono amplifiers =  Power output: 140 watts per channel into 8 ohms (stereo) Frequency response: 20 Hz to 20 kHz Total harmonic distortion: 0.03% Input sensitivity: 0.5 V Signal-to-noise ratio: 105 dB Speaker load impedance: 4 ohms (minimum) Dimensions: 321 x 140 x 238 mm Weight: 12 kg  = Quad ESL-63 =  Type Condenser type, floor-standing Nominal impedance 8 ohms Playback frequency band 35 Hz to 20 kHz (-6 dB at 35 Hz, -6 dB at 20 kHz) Output sound pressure level 86 dB\/W\/m Sensitivity 1 bar\/V\/m (86 dB\/2.83 Vrms) Max Input Maximum continuous input voltage: 10 Vrms Maximum peak input during program to obtain distortionless output: 40 V Maximum allowable peak input: 55 V Maximum power output 2 N\/m² (2 m on axis) Directional property 125 Hz: 5 dB 500 Hz: 6.4 dB 2 kHz: 7.2 dB 8 kHz: 10.6 dB External dimensions 660 mm wide x 925 mm high x 270 mm deep (including 150 mm base plate) Weight 18.7 kg\u003c\/p\u003e","brand":"Quad","offers":[{"title":"Default Title","offer_id":59370619634009,"sku":"1811","price":6000.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/5721\/8905\/files\/quad-66-systeem-1.jpg?v=1789118416","url":"https:\/\/wenwaudio.com\/en\/products\/quad-66-systeem","provider":"W\u0026WAudio","version":"1.0","type":"link"}