s s s e of ta d. th of It r. ) t) le l) Revolutionary AAVA
Contents
1. K1205Y PRINTED IN JAPAN 850 2176 00 B12. Sensitivity Input Impedance Output Voltage Output Impedance Gain Tone Controls Loudness Compensation Attenuator Signal to Noise Ratio Power Level Meters Load Impedance Stereo Headphones Power Requirements Power Consumption Maximum Dimensions Mass li Supplied accessories AC power cord Remote commander RC 200 Remarks MC MM switching is possible on the front panel of the E 260 Internal DIP switches control MC input impedance and subsonic filter on off MC Gain 62 dB Input impedance 10 30 100 ohms selectable Gain 36 dB Input impedance 47 kilohms Line Input Board LINE 10 This option board provides an additional set of unbalanced line inputs E 260 Guaranteed Specifications Guaranteed specifications are measured according to EIA standard RS 490 Continuous Average Output Power both channels driven 20 20 000 Hz 115 watts per channel into 4 ohms 105 watts per channel into 6 ohms 90 watts per channel into 8 ohms Total Harmonic Distortion both channels driven 20 20 000 Hz 0 05 with 4 to 16 ohm load Intermodulation Distortion 0 01 HIGH LEVEL INPUT POWER INPUT 20 20 000 Hz 0 0 2 dB for rated continuous average output 3 150 000 Hz 0 3 0 dB for 1 watt output 200 For rated output with 8 ohm load 50 Hz Input sensitivity Input For rated output For 1 W output EIA impedance HIGH LE
3. have a bearing on possible noise in an AAVA arrangement is the input buffer design By connecting five high performance amps in parallel excellent S N ratio is assured E AAVA maintains high S N ratio and uniform frequency response AAVA does not introduce a change in impedance at any volume setting Consequently there is no deterioration of S N ratio and frequency response remains totally uniform The benefits are especially apparent at settings that correspond to normal listening levels because the tonal quality is not altered in any way in Japan and abroad E No more left right tracking error or crosstalk Because AAVA is an electronic circuit employing fixed value resistors there are virtually no left right tracking differences even at very low volume levels Since domain for high performance and ultimate sound Starting with the ultimate top of the line preamplifier C 3800 it has received high praise as a crucial ingredient for sonic excellence in preamplifiers and integrated amplifiers The preamplifier and power amplifier sections of the E 260 are separate circuits that rival discrete components in performance and sound With a simple flick of the EXT PRE switch the preamplifier can be detached from the power amplifier allowing the sections to be used individually The power amplifier block is configured as an advanced instrumentation amplifier which enables fully balanced signal transmission The volume level degree
4. 9 AD 10 can also be used In this The speakers must have a built in crossover network and separate inputs for LOW and HIGH range The example shows a setup with an additional power amplifier for the low frequency range case the MC MM button Photo shows an example for option board installation on the front panel of the E 260 has no effect MC MM switching must be performed on the board Digital Input Board DAC 30 Features a high accuracy MDS Multiple Delta Sigma type D A converter for impeccable sound The USB port allows connection to a computer with a downloaded music library for playback of high resolution data with optimum sound quality COAXIAL 75 ohm coaxial cable Sampling frequency 32 kHz 192 kHz 24 bit resolution OPTICAL Optical fiber cable Sampling frequency 32 kHz 96 kHz 24 bit resolution USB USB cable with Type B connector Sampling frequency 32 kHz 96 kHz 24 bit resolution Analog Disc Input Board This board serves for playback of analog records It contains a high performance high gain phono equalizer DIGITAL INPUTS cable el A A o K K o o j j on S e hatieomsinaenoms O OPTICAL Coaxial digital COAXIAL up to 192 kHz 24 bit Optical fiber cable up to 96 kHz 24 bit USB cab
5. INTEGRATED STEREO AMPLIFIER E 260 Revolutionary AAVA volume control Output stage with high power transistors in parallel push pull arrangement delivers high quality power 90 watts x 2 into 8 ohms Instrumenta tion amplifier principle for power amplifier input stage allows fully balanced signal transmission Logic control relays for shortest signal paths Strong power supply with massive high efficiency transformer and large filtering capacitors EXT PRE button allows separate use of preamplifier and power amplifier sections Numeric indication of volume level X a o o k ee eon a CaP Be 8 EXT PRE pu oN PHASE MC ING The Accuphase E 200 series of integrated amplifiers occupies a central position in the Accuphase lineup and enjoys enduring popularity both The E 260 stands firmly in this tradition harnessing the technology advantages of the series in a new format It represents a major overhaul of the E 250 reflecting latest design technology and featuring the same advanced AAVA volume control as the higher ranked models E 560 E 460 and E 360 The result is a classy integrated amplifier that brings out the full musical splendor of every source AAVA is a revolutionary principle that redefines the concept of volume control from the ground up operating purely in the analog AAVA Accuphase Analog Vari gain Amplifier Volume Control AAVA is a radically different volume control principle that eliminates a
6. VEL INPUT 134 mV 14 2 mV 20 kilonms BALANCED INPUT 134 mV 14 2mV_ 40 kilohms POWER INPUT 1 07 V 113 mV _ 20 kilohms PRE OUTPUT 1 07 V 50 ohms at rated continuous average output HIGH LEVEL INPUT gt PRE OUTPUT 18 dB POWER INPUT OUTPUT 28 dB Turnover frequency and adjustment range BASS 300Hz 10 dB 50 Hz TREBLE 3kHz 10 dB 20 kHz 6 dB 100 Hz 20 dB Input Input shorted A weighting put S N ratio at rated output ele HIGH LEVEL INPUT 105 dB 95 dB BALANCED INPUT 91 dB 94 dB POWER INPUT 101 dB Logarithmic compression peak reading meters output dB scale 4 16 ohms Suitable impedance 8 ohms or higher AC 120 V 220 V 230 V 50 60 Hz Voltage as indicated on rear panel 49 watts idle 245 watts in accordance with IEC 60065 Width 465 mm 18 5 16 Height 151 mm 5 15 16 Depth 420 mm 16 1 2 20 0 kg 44 0 Ibs net 26 0 kg 57 3 Ibs in shipping carton xX This product is available in versions for 120 220 230 V AC Make sure that the voltage shown on the rear panel matches the AC line voltage in your area x 230 V version has an Eco Mode that switches power off after 120 minutes of inactivity The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country http www accuphase com ccupnase e Specifications and design subject to change without notice for improvements ACCUPHASE LABORATORY INC
7. le with Type B connector Computer up to 96 kHz 24 bit p em 38888 Digital equipment os Digital S PDIF output CD player Power amplifier P 4100 A 35 or similar PY Ne Connection example for DAC 30 E Front panel E Rear panel Option board installation slot 2 n T SPEAKERS CLASS 2 WIRING OPTION INPUTS RECORDER PRE DUT POWIR IN JE aa 2 TUNER CO LINEI LINE LINE PLAY REC EXT FREMM id Lert M R la a R Nile A r AD IR iert A A P noir A m m R A ro aout AR Ak gt CO INPUTS BALANCED RIGHT LEFT nor oN EFT E _ F IMPEDANCE B416 OHMS A B 16 OHMS lc MODEL E 26 BALANCED CONNECTION 1 GNI 2 INV 3 NON INY Input selector Tone control ON OFF button LINE 3 LINE 2 LINE 1 CD BAL CD Loudness compensator ON OFF button TUNER OPTION MC MM selector Peak power meters Attenuator ON OFF button Volume level indication Headphone jack Power switch Line inputs Preamplifier Power amplifier separator EXT PRE TUNER CD LINE 1 2 3 O Phase selector Recorder inputs and outputs Mono Stereo selector Preamplifier outputs Speaker selector OFF A B A B Power amplifier inputs Recorder selector OFF ON PLAY Left right speaker output terminals 2 sets A B Balance control CD inputs balanced Bass control AC power connector Treble control Frequency Response Damping Factor Input
8. ll variable resistors from the signal path and uses analog processing to provide top notch performance and sound quality Because the music signal is not affected by changes in impedance due to variable resistors high signal to noise ratio and low distortion are maintained at any volume control setting E AAVA means analog processing The AAVA circuit converts the music signal from a voltage into a current controls gain by means of current switches and then reconverts the current into a voltage The entire process is carried out in the analog domain E Same operation feel as a conventional high quality volume control Operating the volume knob feels exactly the same as with a conventional control and as before operation via the remote commander is also possible WE Attenuator and balance control also implemented by AAVA The functions of the attenuator and the left right balance control are covered by the AAVA circuit as well eliminating the need for additional circuit stages Keeping the configuration simple helps to maintain high performance and sonic purity W Display shows volume level as numeric value E Volume control resolution AAVA adjusts the listening volume by means of 16 weighted V I converter amplifiers which are controlled by current switches The number of possible volume steps set by the combination of these converter amplifiers is 2 to the power of 16 65 536 E Input buffer amps use 5 MCS topology One of the factors that
9. ming active filters for optimum sound quality M Loudness compensator for enhanced sonic impact at low listening levels W Versatile array of inputs including balanced inputs to shut out external noise interference W Balanced inputs with phase selection capability Line input and output connectors W Logic controlled relays assure high dbalanced input connectors sound quality and long term reliability i f fi f M Analog peak power meters for WETTE TE T i monitoring output levels ia Mi Dedicated headphone amplifier ee ee E Si optimized for sound quality on ange an fl W High Carbon cast iron insulator Rimi ru i feet with superior damping character 7 I i istics further enhance sound quality E Instrumentation amplifier Large speaker terminals OUTPUT Circuit diagram of E 260 power amplifier one channel Highly reliable parts selected for sound quality Connection example for bi amping setup Option Boards In a bi amped setup the speaker units for the The E 260 provides one LOW frequency range and HIGH frequency range slot for an option board are driven by separate amplifiers with equal gain on the rear panel for even better sound quality Left loudspeaker Right loudspeaker Option boards can be used to implement direct connection of digital signals for high quality music playback or to implement high quality playback of analog records The Analog Disc Input Board AD
10. ntrol Power amplifier section featuring high power transistors in parallel push pull configuration together with robust power supply realizes low impedance in output stage Rated for 90 watts of quality power into 8 ohms with damping factor of 200 Current feedback amplifier topology assures excellent phase characteristics in high range and instrumentation amplifier principle enables fully balanced signal transmission throughout Together with the highly acclaimed current feedback principle this makes for even better electrical characteris tics In the output stage high power audio grade transistors are arranged in a parallel push pull configuration which significantly enhances the capability to safely drive low impedance loads Output operation is sustained by the power supply with a massive power transformer and large filtering capacitors This provides high quality power output of 115 watts x 2 into 4 ohms or 90 watts x 2 into 8 ohms along with a damping factor of 200 thanks to the redesigned circuitry W CPU assembly for control of AAVA and various other functions E AAVA volume control assembly with higher integration density of components and circuitry Logic relay control and line inputs outputs j r E Supplied remote f commander RC 200 Allows volume adjustment Protection circuitry el Option boar EE and input source switching g f i DP lt oS s T Large powe
11. of attenuation as set with AAVA is shown as a numeric indication in the center of the front panel The indication ranges from MAX 0 dB to MIN lowest setting channels can be kept separate crosstalk also ceases to be a problem 16 current switches 65 536 possible combinations Input music signal O INPUT 5 MCS V I Converter C Conversion into current with 16 weighting stages 1 2 1 2 D Money d fx l ey 7 P U CPU detects position of volume knob and operates current on off switches according to knob position AAVA configuration in E 260 I V Converter Reconversion of current into voltage OUTPUT Volume Balance Attenuator Volume knob is turned and position is detected jog ie ake oe opm Pas AAVA operation principle The music signal is converted into 16 types of weighted current by V I voltage current converting amplifiers 1 2 1 22 1 215 1 218 The 16 currents are turned on or off by 16 current switches and the combination of switch settings determines the overall volume The switching operation is controlled by a CPU according to the position of the volume control knob The combined signal current forms a variable gain circuit that adjusts the volume Finally the combined current is converted back into a voltage by an l V current voltage converter Integrated amplifier with AAVA volume co
12. r transformer Massive heat sink and power amplifier PCB Preamplifier power supplyiPCB AS AN E Power amplifier assemblies with parallel a push pull output stage f A instrumentation amplifier M Power amplifier unit with and current feedback high power transistors in amplifier directly mounted parallel configuration delivers to large heat sink ample power 115 watts channel into 4 ohms or 90 watts channel into 8 ohms W Hefty high efficiency transformer and large filtering capacitors 22 000 F x 2 provide ample reserves WEXT PRE button and preamplifier output power amplifier input connectors allow independent use of pre and power amplifier sections MC MM EXT PRE W Option board slot allows system l i expansion Realize digital input capability USB coaxial optical or O O High power transistors Large power transformer Filtering capacitors analog record playback With incinla i AD 20 board MC MM switching on MC MM select EXT PRE butt iit il E 260 front panel is possible pip ain Allows fully balanced signal E Redesigned NFB path results in paths throughout from input minimized output impedance and a to output including signal damping factor as high as 200 input stage Current feedback E Two sets of large size speaker circuit topology ensures out terminals accept Y lugs and enable standing high range phase speaker bi wiring is a W Tone controls using sum
Download Pdf Manuals
Related Search