Instruction/ maintenance manual of the product DSP-AX757SE Yamaha
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RX-V757 AV R e c e i v e r DSP-AX757SE A V Amplifier O WNER’S MANU AL MODE D’EMPLOI BEDIENUNGSANLEITUNG BR UKSANVISNING MANU ALE DI ISTR UZIONI MANU AL DE INSTR UCCIONES GEBR UIKSAANWIJZING GB.
CAUTION: READ THIS BEFORE OPERATING YOUR UNIT. 1 To assure the finest performance, please read this manual carefully. K eep it in a safe place for future reference. 2 Install this sound system in a well ventilated, cool, dry, clean place – awa y from direct sunlight, heat sources, vibration, dust, moisture, and/or cold.
1 PREP ARATION INTRODUCTION BASI C OPERA TION SOUND FIELD PROGRAMS ADV ANCED OPERA TION ADDITIONAL INFORMA TION English FEATURES ..................................... ........................ 2 GETTING STARTED. ........................................
FEATURES 2 Built-in 7-channel power amplifier ◆ Minimum RMS output power (0.06% THD, 20 Hz to 20 kHz, 8 ! ) Front: 100 W + 100 W Center: 100 W Surround: 100 W + 100 W Surround back: 100 W + 100 W So.
GETTING STARTED 3 INTRODUCTION English Please check that you received all of the following parts. 1 Press the part and slide the battery compartment cover off. 2 Insert four supplied batteries (AAA, R03, UM-4) according to the polarity mark ings (+ / –) on the inside of the battery compartment.
CONTROLS AND FUNCTIONS 4 1 ST ANDBY/ON Turns on this unit or sets it to the standby mode. When you turn on this unit, you will hear a click and there will be a 4 to 5-second delay before this unit can reproduce sound. In standby mode, this unit consumes a small amount of power in order to receive infrared-signals from the remote control.
CONTROLS AND FUNCTIONS 5 INTRODUCTION English A PHONES (SILENT CINEMA) jack Outputs audio signals for private listening with headphones. When you connect headphones, no signals are output to the PRE OUT jacks or to the speakers. All Dolby Digital and DTS audio signals are mixed down to the left and right headphone channels.
CONTROLS AND FUNCTIONS 6 This section describes the function of each control on the remote control used to control this unit. To operate other components, see “REMOTE CONTROL FEA TURES” on page 68. 1 Infrared window Outputs infrared control signals.
CONTROLS AND FUNCTIONS 7 INTRODUCTION English C CLEAR Use to clear functions acquired when using the learn and rename features, or setting remote control codes (see page 74). D LEARN Use to set up manufacturer codes or program functions from other remote controls (see pages 69 and 72).
CONTROLS AND FUNCTIONS 8 1 Decoder indicators When any of this unit’s decoders function, the respecti ve indicator lights up. 2 VIRTUAL indicator Lights up when Virtual CINEMA DSP is activ e (see page 36). 3 SILENT CINEMA indicator Lights up when headphones are connected and a sound field program is selected (see page 31).
CONTROLS AND FUNCTIONS 9 INTRODUCTION English K SLEEP indicator Lights up while the sleep timer is on. L 96/24 indicator Lights up when a DTS 96/24 signal is input to this unit. M LFE indicator Lights up when the input signal contains the LFE signal. N Input channel indicators Indicate the channel components of the current digital input signal.
CONTROLS AND FUNCTIONS 10 1 DIGITAL OUTPUT jacks See page 19 for details. 2 Audio component jac ks See page 19 for connection information. 3 Video component jacks See pages 16 and 18 for connection information. 4 Antenna terminals (RX-V757 only) See page 21 for connection information.
SPEAKER SETUP 11 PREP ARATION English The speaker layout below shows the standard ITU-R * speaker setting. Y ou can use it to enjo y CINEMA DSP and multi-channel audio sources. * ITU-R is the radio communication sector of the ITU (International Telecommunication Union).
12 SPEAKER SETUP Be sure to connect the left channel (L), right channel (R), “+” (red) and “–” (black) properly. If the connections are faulty, no sound will be heard from the speakers, an d if the polarity of the speaker connections is incorrect, the sound will be unnatural and lack bass.
13 SPEAKER SETUP PREP ARATION English FRONT SUB WOOFER FRONT A B CENTER SINGLE PRE OUT SURROUND SURROUND BACK PRESENCE/ ZONE 2 SPEAKERS SURROUND CENTER SURROUND BACK 23 1 6 7 10 9 8 4 5 Subwoofer syst.
14 SPEAKER SETUP ■ FRONT terminals Connect one or two speaker systems (6, 7) to these terminals. If you use only one speaker system, connect it to the FRONT A or B terminals. ■ CENTER terminals Connect a center speaker (8) to these terminals. ■ SURROUND terminals Connect surround speakers (4, 5) to these terminals.
CONNECTIONS 15 PREP ARATION English Do not connect this unit or other components to the mains power until all con nections between components are complete. ■ Cable indications ■ Analog jacks Y ou can input analog signals from audio components by connecting audio pin cable to the analog jacks on this unit.
16 CONNECTIONS ■ Connections for D VD playback Be sure to connect your video source components in the same way you connect your video monitor to this unit if VIDEO CONV .
17 CONNECTIONS PREP ARATION English ■ Connecting to the MUL TI CH INPUT jacks This unit is equipped with 8 additional input jacks (left and right FRONT, CENTER, left and right SURROUND, left and right SURROUND BA CK and SUBWOOFER) for discrete multi-channel input from a multi-format player, external decoder, sound processor or pre-amplifier .
18 CONNECTIONS ■ Connections for other video compone nts • Be sure to connect your video source components in the same way you conn ect your video monitor to this unit if VIDEO CONV.
19 CONNECTIONS PREP ARATION English ■ Connections for audio components ■ Connecting a turntable PHONO jacks are for connecting a turntable with an MM or high-output MC cartridge. If you have a turntable with a low-output MC cartridge, use an in-line boosting transformer or MC-head amplifier when connecting to these jacks.
20 CONNECTIONS ■ Connecting to an external amplifier If you want to increase the power output to the speakers, or want to use another amplifier, connect an extern al amplifier to the PRE OUT jacks as follows.
21 CONNECTIONS PREP ARATION English Both FM and AM indoor antennas are included with this unit. In general, these antennas should provide sufficient signal strength. Connect each antenna correctly to the designated terminals. ■ Connecting the AM loop antenna 1 Set up the AM loop antenna.
22 CONNECTIONS ■ Connecting the AC power cord Plug the power cord into an AC wall outlet. ■ AC OUTLET(S) (SWITCHED) DSP-AX757SE ..................................................... 1 outlet RX-V757 ................................................
23 CONNECTIONS PREP ARATION English If you are using 4 or 6 ohm speakers, set the impedance to 4 or 6 ohms as follows before turning on the power . Be sure this unit is in the standby mode. 1 T urn off the power to this unit, and while holding down STRAIGHT (EFFECT), press ST ANDBY/ON.
AUTO SETUP 24 This receiver employs Y AMAHA Parametric Room Acoustic Optimizer (YP AO) technology which lets you avoid troublesome listening-based speaker setup and achieves highly accurate sound adjustments. The supplied optimizer microphone collects and analyzes the sound your speakers produce in your actual listening environment.
25 AUTO SETUP PREP ARATION English For best results, make sure the room is as quiet as possible during the auto setup procedure (YP AO). If there is too much ambient noise, the results may not be satisfactory .
26 AUTO SETUP The results displayed in the RESUL T:EXIT screen are as follows: SP The number of connected speakers displayed in the order: Front/Back/Subwoofer DIST The distance of the speakers from t.
27 AUTO SETUP PREP ARATION English ■ If a warning screen appears 1 Press ENTER to display detailed information about the warning. Press j / i to switch between warning messages. For details about each message, see page 29. y • Warnings let you know about potential problems detected during auto setup.
28 AUTO SETUP ■ T r oubleshooting for auto setup procedure Before auto setup Errors during auto setup Error message Cause Remedy Connect MIC Optimizer microphone is not conn ected. • Conne ct the supplied optimizer microphone to the OPTIMIZER MIC jack on the front panel.
29 AUTO SETUP PREP ARATION English Warnings after auto setup Press j / i to display detailed information about individual warnings. • If the ERROR or WARNING screens appears, check the cause of the problem, then perform the auto setup pr ocedure again.
PLAYBACK 30 1 Press STANDBY/ON (or SYSTEM PO WER on the remote control) to tur n on the power . 2 T urn on the video monitor connected to this unit. 3 Press SPEAKERS A or B (or press AMP to select the AMP mode, then press SPEAKERS A or B on the remote control).
31 PLAYBACK BASIC OPERA TION English 7 Select a sound field program if desired. Use PROGRAM (or press AMP to select the AMP mode, then press one of the sound field program buttons) to select a sound field program. See page 49 for details about sound field programs.
32 PLAYBACK ■ Selecting MUL TI CH INPUT Press MUL TI CH INPUT (or MULTI CH IN on the remote control) so that “MUL TI CH INPUT” appears in the front panel display and video monitor. MULTI CH INPUT When “MULTI CH INPUT” is shown in the front panel display , no other source can be played.
33 PLAYBACK BASIC OPERA TION English ■ Remote control operation Press AMP to select the AMP mode, then press one of the sound field program buttons to select the desired program.
34 PLAYBACK • Some 6.1-channel compatible discs do not have a signal (flag) which this unit can automatically detect. When playing these kinds of discs with 6.1-channel, select a decoder (PLIIx Movie, PLIIx Music, EX/ES or EX) manually. • 6.1-channel playback is not possible even if EXTD SUR.
35 PLAYBACK BASIC OPERA TION English ■ Listening to high fidelity stereo sound (PURE DIRECT) PURE DIRECT allows you to bypass this unit’s decoders and DSP processors, and turn off the video circuitry and front panel display to enjoy pure high fidelity sound from analog and PCM sources.
36 PLAYBACK ■ Downmixing to 2 channels Y ou can enjoy 2-channel stereo playback even from multi- channel sources. Rotate PROGRAM (or press AMP to select the AMP mode, then press STEREO on the remote control) to select 2ch Stereo. 2ch Stereo y Y ou can use a subwoofer with this program when SWFR or BOTH is selected in “BASS OUT”.
37 PLAYBACK BASIC OPERA TION English This unit comes with a variety of input jacks. Do the following to select the type of input signals you want to use. 1 Rotate INPUT (or press one of the input selector buttons on the remote control) to select the input source.
38 PLAYBACK 3 Press u / d to display the followin g information about the input signal. (Format) Signal format display. When the unit cannot detect a digital signal it automatically switches to analog input. in Number of source channels in the input signal.
FM/AM TUNING (RX-V757 ONLY) 39 BASIC OPERA TION English There are 2 tuning methods; automatic and manual. Automatic tuning is effecti ve when station signals are strong and there is no interference. ■ Automatic tuning 1 Rotate INPUT to select TUNER as the input source.
40 FM/AM TUNING (RX-V757 ONLY) ■ Manual tuning If the signal from the station you want to select is weak, tune into it manually . Manually tuning into an FM station will automatically switch the tuner to monaural reception to increase the signal quality .
41 FM/AM TUNING (RX-V757 ONLY) BASIC OPERA TION English 3 Press and hold MEMORY (MAN’L/A UTO FM) for more than 3 seconds. The preset number, the MEMOR Y and AUTO indicators flash. After about 5 seconds, automatic presetting starts from the frequency currently displayed and proceeds toward the higher frequencies.
42 FM/AM TUNING (RX-V757 ONLY) 4 Press PRESET/TUNING l / h to select a preset station number (1 to 8) while the MEMORY indicator is flashing. Press h to select a higher preset station number. Press l to select a lo wer preset station number. 5 Press MEMORY (MAN’L/A UT O FM) on the front panel while the MEMOR Y indicator is flashing.
43 FM/AM TUNING (RX-V757 ONLY) BASIC OPERA TION English 2 Press PRESET/TUNING l / h (or PRESET u / d on the remote control) to select a preset station number (1 to 8). The preset group and number appear on the front panel display along with the station band, frequency and the TUNED indicator lights up.
44 FM/AM TUNING (RX-V757 ONLY) 4 Press PRESET/TUNING (EDIT) again. The stations stored at the two preset assignments are exchanged. Radio Data System is a data transmission system used by FM stations in many countries. The Radio Data System function is carried out among the network stations.
45 FM/AM TUNING (RX-V757 ONLY) BASIC OPERA TION English Four modes are available for displaying Radio Data System data. The PS, PTY, RT and/or CT indicators that correspond to the Radio Data System data services offered by the station light up in the front panel display.
46 FM/AM TUNING (RX-V757 ONLY) If you select the desired program type, this unit automatically searches all preset Radio Data System stations that are broadcasting a program of the required type. y When performing this operation with the remote control, first press TUNER to set the remote to tuner mode.
47 FM/AM TUNING (RX-V757 ONLY) BASIC OPERA TION English This function uses the EON data service on the Radio Data System station network. If you select the desired program type (NEWS, INFO, AFFAIRS or.
RECORDING 48 Recording adjustments and other operations are performed from the recording components. Refer to the operating instructions for those components. 1 T urn on the power of this unit and all connected components. 2 Select the source component you want to record from.
SOUND FIELD PROGRAM DESCRIPTIONS 49 SOUND FIELD PROGRAMS English This unit is equipped with a variety of precise digital decoders that allow you to enjoy multi-channel playback from almost any sound source (stereo or multi-channel).
50 SOUND FIELD PROGRAM DESCRIPTIONS 5 SUR. STANDARD S tandard processing for the selected decode r . MUL TI 2-CH SUR. ENHANCED Enhanced processing for the selected decoder.
51 SOUND FIELD PROGRAM DESCRIPTIONS SOUND FIELD PROGRAMS English Y ou can select from the following sound fields when playing music sources, like CD, FM/AM broadcasting, tapes, etc. Program selection methods vary dependin g on sound field program types.
ADVANCED OPERATIONS 52 Y ou can display this unit’s operating information on a video monitor. If you display the SET MENU and sound field program parameter settings on a monitor, it is much easier to see the available option s and parameters than it is by reading this information on the front panel display .
53 ADVANCED OPERATIONS ADV ANCED OPERA TION English ■ Canceling the sleep timer Press SLEEP repeatedly until “SLEEP OFF” appears in the front panel display.
SET MENU 54 Y ou can use the following parameters in SET MENU to adjust a variety of system se ttings and customize the way this unit operates. Change the initial settings (indicated in bold under each parameter) to reflect the needs of your listening environment.
55 SET MENU ADV ANCED OPERA TION English 3 OPTION MENU Use to adjust the optional system parameters. * The Zone 2 amplifier feature is only available for RX-V757. ■ SIGNAL INFO Use to check audio signal information (see page 37). Item Features Page A)DISPLAY SET Adjus ts the brightness of the display and converts video signals.
56 SET MENU Use the remote control to access and adjust each parameter. y • You can change SET MENU parameters while the unit is reproducing sound. • If you press a sound field program button during SET MENU operation, the SET MENU is canceled.
57 SET MENU ADV ANCED OPERA TION English Use to manually adjust any speaker setting or compensate for video signal processing delays when using LCD monitors or projectors. Most of the SOUND MENU parameters are set automatically when you run auto setup (see page 24) .
58 SET MENU Surround back speakers SUR. B L/R SP Choices: LRGx1, LRGx2, SMLx2 , SMLx1, NONE • Select LRGx1 if you have a large surround back speaker. The unit directs the entire range of the surround back channel signal to the left surround back speaker.
59 SET MENU ADV ANCED OPERA TION English Subwoofer phase SUBWOOFER PHASE If bass sounds are lacking or unclear, use this feature to switch the phase of your subwoofer. Choices: NORMAL , REVERSE • Select NORMAL if you do not want to reverse the phase of your subwoofer.
60 SET MENU ■ Speaker distance C)SP DISTANCE Use this feature to manually input the distance of each speaker and adjust the delay applied to respective channel. Ideally, each speaker should be the same distance from the main listening position. However , this is not possible in most home situations.
61 SET MENU ADV ANCED OPERA TION English ■ Low-frequency effect level E)L FE LEVEL Use to adjust the output level of the LFE (low-frequency effect) channel according to the capacity of your subwoofer or headphones. The LFE channel carries low- frequency special effects which are only added to certain scenes.
62 SET MENU Use to reassign digital input/outputs, select the input mode or rename your inputs. ■ Input/output assignment A)I/O ASSIGNMENT Y ou can assign jacks according to the component to be used if this unit’s initial settings do not correspond to your needs.
63 SET MENU ADV ANCED OPERA TION English ■ Input mode B)INPUT MODE Use this feature to designate the input mode for sources connected to the DIGIT AL INPUT jacks when you turn on this unit (see page 37 for details about the input mode).
64 SET MENU Use to adjust the optional system parameters. ■ Display settings A)DISPLAY SET Dimmer DIMMER Use to adjust the brightness of the front panel display. Choices: –4 to 0 Video conversion VIDEO CONV. Use this feature to turn on/off conver sion of composite (VIDEO) signals to both S-video and component signals.
65 SET MENU ADV ANCED OPERA TION English ■ Parameter initialization C)PARAM. INI Use this feature to initialize the parameters for each sound field program within a sound field program group. When you initialize a sound field program group, all of the parameter values wi thin that group revert to their initial settings.
ADVANCED SETUP MENU 66 The ADV ANCED SETUP menu is displayed in the front panel display. y • During the advanced setup procedure, audio output is muted. • During the advanced setup procedure, only the STANDBY/ON, STRAIGHT (EFFECT) buttons, and PROGRAM selector on the front panel are available for operation.
67 ADVANCED SETUP MENU ADV ANCED OPERA TION English ■ ADV ANCED SETUP menu items Change the initial settings (indicated in bold under each parameter) to reflect the needs of your listening environment. Speaker impedance SP IMP. Use to switch the speaker impedance for this unit.
REMOTE CONTROL FEATURES 68 In addition to controlling this unit, the remote control can also operate other A/V components made by Y AMAHA and other manufacturers. T o control other components, you must set up remote control with the appropriate remote control codes.
69 REMOTE CONTROL FEATURES ADV ANCED OPERA TION English Y ou can control other components by setting the appropriate manufacturer codes. Codes can be set up for each input area. The following table shows the factory preset component (Library: component category) and the remote control code for each area.
70 REMOTE CONTROL FEATURES 3 Press u / d to select the name of your component’s man ufacturer. Y ou will find the names of most worldwide audio- video manufacturers in alphabetical order in the display window . 4 Press one of the buttons shaded below to see if you can control your component.
71 REMOTE CONTROL FEATURES ADV ANCED OPERA TION English Once you set the appropriate remote control codes, you can use this remote to control your other components. Note that some buttons may not correctly operate the selected component. Use the input selector buttons to select the component you want to operate.
72 REMOTE CONTROL FEATURES If you want to program functions not included in the basic operations covered by the remote control code, or an appropriate remote control code is not available, do the following. Y ou can program any of the buttons available in the component control area (see page 68).
73 REMOTE CONTROL FEATURES ADV ANCED OPERA TION English • “NG” appears in the display window if programming was unsuccessful. In this case, start over from step 4. • This remote control can learn approximately 12 0 functions. However depending on the signals learned, “FULL” may appear in the display before y ou program 120 functions.
74 REMOTE CONTROL FEATURES Y ou can clear all changes made in each function set, such as learned functions, renamed source names and setup manufacturer codes. 1 Press CLEAR by using a ballpoint pen or similar object. y Complete each of the following steps in 30 seconds.
75 REMOTE CONTROL FEATURES ADV ANCED OPERA TION English ■ Clearing a learned function Y ou can clear the function learned in a certain programmed button in each area. 1 Press an input selector button to select the source component containing the function you want to clear .
ZONE 2 (RX-V757 ONLY) 76 This unit allows you to configure a multi-room audio system. Y ou can control this unit from the second room using the supplied remote control. Y ou need the following additional equipment to use the multi-room functions of this unit: • An infrared signal receiver in the second room.
77 ZONE 2 (RX-V757 ONLY) ADV ANCED OPERA TION English Using this unit’s internal amplifier To u se this unit’s internal amplifier , set “ZONE2 AMP” to “INT” in SET MENU (see page 65). The supplied remote control can be used to control Zone 2.
78 ZONE 2 (RX-V757 ONLY) 3 Press an input selector button to select the input source you want to li sten to in the second room. The display window shows “2: name of selected input” if the remote control is in the Zone 2 mode. 4 Y ou can control Zone 2 using the input selector, ST ANDBY, SYSTEM POWER, MUTE and VOL –/+.
EDITING SOUND FIELD PARAMETERS 79 ADDITIONAL INFORMA TION English What really creates the rich, full tones of a liv e inst rument are the multiple reflections from the walls of the room.
80 EDITING SOUND FIELD PARAMETERS 4 Press u / d to select the parameters. 5 Press j / i to change the parameter value. When you set a parameter to a value other than the factory-set value, an asterisk mark (*) appears by the parameter name on the on-screen display.
SOUND FIELD PARAMETER DESCRIPTIONS 81 ADDITIONAL INFORMA TION English Y ou can adjust the values of certain digital sound field parameters so the sound fields are recreated accurately in your listening room. Not all of the following parameters are fo und in every program.
82 SOUND FIELD PARAMETER DESCRIPTIONS ■ LIVENESS (Liveness) Function: Adjusts the reflectivity of the virt ual walls in the hall by changing the rate at which the early refl ections decay.
83 SOUND FIELD PARAMETER DESCRIPTIONS ADDITIONAL INFORMA TION English ■ REV .TIME (Reverberation time) Function: Adjusts the amount of time it takes for the dense, subsequent reverberation sound to decay by 60 dB (at 1 kHz). This changes the apparent size of the acoustic en vironment over an extremely wide range.
84 SOUND FIELD PARAMETER DESCRIPTIONS ■ DIALG.LIFT (Dialog lift) Function: Adjusts the height of the front and center channel sounds by assigning some of the front and center channel elements to the presence speakers. Description: The larger the parameter, the h igher the position of the front and center channel sound.
85 SOUND FIELD PARAMETER DESCRIPTIONS ADDITIONAL INFORMA TION English For DTS Neo:6 Music: ■ C. IMAGE (Center image) Function: Adjusts the center im age from all three front speakers to varying de grees. Control range: 0 to 1.0 Initial setting: 0.3 This parameter can be set only when SUR.
TROUBLESHOOTING 86 Refer to the chart below when this unit does not function properly . If the problem you are experiencing is not listed below or if the instruction below does not help, set this unit to the standby mode, disconnect the power cord, and contact the nearest authorized Y AMAHA dealer or service center.
87 TROUBLESHOOTING ADDITIONAL INFORMA TION English Problem Cause Remedy Refer to page The sound suddenly goes off. The protection circuitry has been activated because of a short circuit, etc. Check t hat the impedance selector setting is correct. 67 Check that the speaker wires are not t ouching each other and then turn this unit back on .
88 TROUBLESHOOTING Problem Cause Remedy Refer to page Dolby Digital or DTS sources cannot be played. (Dolby Digital or DTS indicator on the front panel display does not light up.) The connected component is not se t to output Dolby Digital or DTS digital signals.
89 TROUBLESHOOTING ADDITIONAL INFORMA TION English ■ T uner (With the exception of U.K. model) Problem Cause Remedy Refer to page There is noise interference from digital or radio frequency equipment, or this unit. This unit is too close to the digital or high- frequency equipment.
90 TROUBLESHOOTING ■ Remote control Problem Cause Remedy Refer to page The remote control does not work nor function properly. Wrong distance or angle. The re mote control will function within a maximum range of 6 m and no more than 30 degrees off-axis from the front panel.
RESETTING THE FACTORY PRESETS 91 ADDITIONAL INFORMA TION English If you want to reset all of your unit’s parameters for any reason, do the following. This procedure completely resets ALL parameters, including the SET MENU, level, assign and tuner presets.
GLOSSARY 92 ■ Dolby Digital Dolby Digital is a digital surround sound system that gives you completely independent multi-channel audio. With 3 front channels (left, center, and right), and 2 surround stereo channels, Dolby Digital provides 5 full-range audio channels.
93 GLOSSARY ADDITIONAL INFORMA TION English ■ CINEMA DSP Since the Dolby Surround and DTS systems were originally designed for use in movie theaters, their effect is best felt in a theat er having many speakers and designed for acoustic effects.
94 GLOSSARY ■ Component video signal With the component video signal system, the video signal is separated into the Y signal for the luminance and the P B and P R signals for the chrominance. Color can be reproduced more faithfully with this system because each of these signals is independent.
SPECIFICATIONS 95 ADDITIONAL INFORMA TION English AUDIO SECTION • Minimum RMS Output Power for Front, Center , Surround, Surround back 20 Hz to 20 kHz, 0.06% THD, 8 !% ....................... ............ 100 W • Maxim um Power (EIAJ) [China, Korea and General models] 1 kHz, 10% THD, 8 !% .
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