Philips NTX800 User manual

BT/AUX/USB/TUNER/NFC/MIC/RIPALL/DJ/MIX
TABLE OF CONTENTS
Chatper
Location of PC Boards & Versions Variation..............................1
Technical specification...............................................................2
Safety instruction........................................................................3
Set Block diagram ......................................................................4
Set Wiring diagram.....................................................................5
Disassembly diagram .................................................................6
Circuit diagram & PCBA Layout..................................................7
Troubleshooting..........................................................................9
Revision List...............................................................................10
Mechanical Exploded view..........................................................8
2015 © Gibson Innovations Limited. All rights reserved.
This product has been manufactured by, and is sold under the responsibility of
Gibson Innovations Ltd., and Gibson Innovations Ltd. is the warrantor in relation
to this product.
Philips and the Philips Shield Emblem are registered trademarks of Koninklijke
Philips N.V. and are used under license from Koninklijke Philips N.V.
Published by Fei & Sandy 1532 Subject to modification
Version 1.0
NTX800/All
3140 038 6350

1-1
VERSION VARIATION
1.Location of PC Boards & Versions Variation
Location of PC Boards
Type /Versions:
Features
Board in used: Service policy
MAIN BOARD
* TIPS : C -- Component Lever Repair.
M -- Module Lever Repair
-- Used
Feature diffrence
RDS
VOLTAGE SELECTOR
ECO STANDBY - DARK
Type /Versions:
NTX800
AMP BOARD
(LATAM)
JACK BOARD
NTX800
/55
TUNER BOARD
MCU+CD BOARD
/55
C/M
C/M
C/M
C/M
((BRAZIL))
x/78
x/78
SMPS BOARD M
C/M
C/M
C/M
C/M
C/M
C/M
M
C/M C/M
Main Board
Key Board SMPS Board AMP Board
Tuner Board
CD Board

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Model : NTX800 Page 1 of 25
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s are reserved. Reproduction in whole or in part is
ted without the written consent of the copyright owner
Product Performance Specification
Type Number
Stroke Versions
Region/Countries
Comment
NTX
8
0
0
/
55
Brazil
Product Brand
:
Philips
Model : NTX800
Description : 3000W Speaker Tower ____

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ted without the written consent of the copyright owner
Owners
Function
s
Name
Comment
Project Manag
ement
(approver)
Vincent Cho
Prod ct Management
Keith
Electrical
Engineering
Sonda So
Mechanical
Engineering
Thomas
Lee
Software
Engineering
Dou Yudong
Aco stics
Engineering
Tony
Development Q ality
Emil
Ind strial Operation
K.K

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Document History:
Revision
Description
of Change
Functions
Prepared
by
Approved by
Date
V
1.0
1
st
proposal
Electrical
XT
2014
-
09
-
16
V1.01
A
dd aco stic part
Aco stics
Tony
NA
2014
-
09
-
17
V1.02
Add mechanical part
Mechanical
Thomas Lee
NA
2014
-
09
-
18
V
1.03
A
co stic part pdate
Aco stics
Tony
NA
2014
-
10
-
05
V2.0
Released
for PPC
Electrical
Walker Wang
2014
-
11
-
05
V2.1
Update the o tp t power to 3000W
Electrical
Walker Wang
NA
2014
-
11
-
25
V2.2 Update acoustic part Aco stics Tony NA 2014-11-26
V3.0 Release for Re_AA Electrical Walker Wang 2014-11-27
V .0 Change name form NTX770 to NTX800
Release for RE-AA +PPC
Electrical Walker Wang 2014-12-10
V5.0 Update CTQ E/M/A Walker Wang 2015-01-06
V6.0 Update Mechanical and Acoustics CTQ.
Release for PTR Use
M/A Walker Wang 2015-01-08
V6.1 Update acoustic MP CTQ Aco stics Tony NA 2015-02-27
V6.2 Update acoustic MP CTQ Aco stics Tony NA 2015-04-15
V6.3 Update Mechanical CTQ Mechanical Thomas NA 2015-04-20
V6. Update the power output in AUX/Audio in Electrical Walker Wang Vincent Chou 2015-0 -22
V7.0 Release for PV Electrical Walker Wang Vincent Chou 2015- -23

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References:
•A dio Prod ct Performance Handbook
•A dio Prod ct Q ality & Reliability Handbook

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Contents
1 General .......................................................................................................................................................... 8
2 Models and Versions ...................................................................................................................................... 9
3 Mechanical Performance ................................................................................................................................ 9
3.1 General Mechanical Performance and Specification ................................................................................ 9
3.2 Product profile ......................................................................................................................................... 9
Product weight : ............................................................................................................................... 9
Product si e (HxWxD) : .................................................................................................................... 9
3.3 Cosmetic and Finishing............................................................................................................................ 9
MUS ................................................................................................................................................. 9
PGD ................................................................................................................................................. 9
Colour Chip ...................................................................................................................................... 9
3.4 Mechanical Operation .............................................................................................................................. 9
3.5 Mechanical Strength and Reliability ....................................................................................................... 10
3.6 Bare drop (optional) ............................................................................................................................... 10
3.7 Others .................................................................................................................................................... 10
4 Packaging, Storage and Transportation ....................................................................................................... 10
4.1 Package Instruction ............................................................................................................................... 10
4.2 Packaging Stacking Instruction – PSI (Container loading) ..................................................................... 11
4.3 Special packing requirement (for specific items/Retailer only)................................................................ 11
4.4 Label’s briefing ...................................................................................................................................... 11
4.5 Others .................................................................................................................................................... 11
5 Electrical Performance ................................................................................................................................. 11
5.1 General Requirement ............................................................................................................................ 11
Safety Standards ............................................................................................................................ 11
EMC Standards .............................................................................................................................. 11
ESD Standards .............................................................................................................................. 12
5.2 Electrical Performance ........................................................................................................................... 12
Power Supply and performance ..................................................................................................... 12
Bluetooth and WiFi ......................................................................................................................... 13
Clock specification ......................................................................................................................... 14
AM/FM Tuner: ................................................................................................................................ 14
Electrical Miscellaneous (NA) ......................................................................................................... 15
5.3 Audio Performance (*1) ......................................................................................................................... 15
5.4 Video Performance: N.A ........................................................................................................................ 16
HDMI .............................................................................................................................................. 16
Composite and Components .......................................................................................................... 16
5.5 Remote Control (refer to performance Handbook) ................................................................................. 17
5.6 Key components list ............................................................................................................................... 17
5.7 Accessory .............................................................................................................................................. 18

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5.8 Others .................................................................................................................................................... 18
6 Acoustic Performance: ................................................................................................................................. 18
6.1 System Overview ................................................................................................................................... 18
6.2 Sound Quality Benchmarking................................................................................................................. 18
6.3 Main Set Specifications.......................................................................................................................... 18
Output power (RMS) ...................................................................................................................... 19
Amplification reserve ...................................................................................................................... 19
Electrical frequency response in source direct mode (flat) .............................................................. 19
DISTORTION before clipping ......................................................................................................... 19
Front Stage distortion with high-level input signal ........................................................................... 19
Hum ............................................................................................................................................... 19
SNR ............................................................................................................................................... 19
Sound processing and features ...................................................................................................... 19
Sound setting ................................................................................................................................. 19
6.4 Speaker Driver Specifications ................................................................................................................ 20
Si e and numbers of speaker driver ............................................................................................... 20
Membrane area .............................................................................................................................. 20
Rated IMPEDANCE ....................................................................................................................... 20
Long term noise POWER ............................................................................................................... 20
EFFICIENCY .................................................................................................................................. 20
T/S parameter target ...................................................................................................................... 20
FREQUENCY RESPONSE at 0 degree in baffle ............................................................................ 20
FREQUENCY RESPONSE at 30 degrees in baffle ........................................................................ 20
FREQUENCY RESPONSE at 60 degrees in baffle ........................................................................ 20
FREQUENCY RESPONSE at 0 degree in free air ......................................................................... 20
DISTORTION (THD) ...................................................................................................................... 21
Magnet material and shielding version ........................................................................................... 21
Diaphragm material ........................................................................................................................ 21
Frame ............................................................................................................................................ 21
Leakage prevention Cushion .......................................................................................................... 21
6.5 Speaker Box Specifications ................................................................................................................... 21
CROSSOVER filter target complexity ............................................................................................. 21
Net internal acoustic volume .......................................................................................................... 21
Bass port /Passive radiator design ................................................................................................. 21
Passive Radiator ............................................................................................................................ 21
Speaker box material and thickness ............................................................................................... 21
Internal construction ....................................................................................................................... 21
Speaker driver mounting ................................................................................................................ 21
Leakage Prevention Approaches.................................................................................................... 21
Box edges profile ........................................................................................................................... 22

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Box shape ...................................................................................................................................... 22
Speakers positioning ...................................................................................................................... 22
Speaker grille ................................................................................................................................. 22
Speaker connectors ....................................................................................................................... 22
Speaker cable ................................................................................................................................ 22
Acoustic damping material ............................................................................................................. 22
Weight ............................................................................................................................................ 22
Speaker design illustration ............................................................................................................. 22
6.6 Others .................................................................................................................................................... 22
7 Software Performance .................................................................................................................................. 22
8 Mass Production Critical To Quality (MP CTQ) ............................................................................................. 23
8.1 Acoustics MP CTQs ............................................................................................................................... 23
8.2 Mechanical MP CTQs ............................................................................................................................ 24
8.3 Electrical MP CTQs ............................................................................................................................... 24

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1 General
Refer Audio Product Performance Handbook and Audio Product Quality & Reliability Handbook for
performance items not mentioned in this document.
DEPICTION DESCRIPTION
Headphone socket 1
Audio in socket 2
USB socket 3
CD door 4
Speaker 5
Coaxial speaker 6
Mic socket
LCD 8
Control buttons 9
FM/AM antenna socket 10
Voltage selector 11
AC cord
12
Aux in sockets 13
Speaker socket to LSB 14
REMARK

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2 Models and Versions
Model Version Destination
NTX800 /55 LATAM
3 Mechanical Performance
3.1 General Mechanical Performance and Specification
Refer to Performance Handbook for BL Audio V1.0 and Quality and Reliability Handbook for BL Audio V1.0
3.2 Product profile
Product weight :
Main Set Weight (kg) LSB Weight (kg)
Product w/o D-Box 26.3 22.2
Product w/ D-Box 30.6 25.7
Product size (HxWxD) :
Main Set Dimension (mm) LSB Dimension (mm)
Product w/o D-Box H1091 x W360 x D471 H1065 x W360 x D471
Product w/ D-Box H1192 x W550 x D421 H1164 x W550 x D421
3.3 Cosmetic and Finishing
MUS
Refer to : NTX600_NTX800_MUS_v7.0_20150211
PGD
Refer to : NTX800_ GD_v7.0_20150407
Colour Chip
N/A
3.4 Mechanical Operation
Refer to Performance Handbook for BL Audio V1.0
3.4.1 USB type A socket
Depth: D < 2.6mm
USB connector must be with pins which can be crossed through and soldered on PCB.
Mechanical strength: withstand 50N, 30sec. (detailed requirement refer to PQP)

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3 4 2 3 5mm Audio in socket
Protrusion H > 0.3mm
Mechanical strength: withstand 50N, 30sec. (detailed requirement refer to PQP)
3.5 Mechanical Strength and Reliability
Refer to Performance Handbook for BL Audio V1.0 and Quality and Reliability Handbook for BL Audio V1.0
3.6 Bare drop (optional)
N/A
3. Others
All the Control Buttons/Tact Switch, Connectors/Jack and other moveable mechanism
must be complied with mechanical strength test criteria according to WOO requirement.
4 Packaging, Storage and Transportation
4.1 Package Instruction
Refer to package instruction, filename : update before ppc

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4.2 Packaging Stacking Instruction – PSI (Container loading)
Refer to PSI, filename : NTX800MU-55-PSI-WEEE-v2.1, NTX800SB-55-PSI-WEEE-v2.1
4.3 Special packing requirement (for specific items/Retailer only)
N/A
4.4 Label’s briefing
Refer to label briefing document, filename : NTX800MU-55 Label briefing 20150 03, NTX800SB-
55 贴纸
贴纸贴纸
贴纸 20150319
4.5 Others
N/A
5 Electrical Performance
5.1 General Requirement
Safety Standards
Where applicable:
For /12 (EU), /05 (UK), /51 (Russia) EN/IEC 60065 th Edition
For /3 (US, Canada) UL 60065
For /55 (LATAM), / 8 (Brazil) IEC 60065 th Edition
For /98 (AP), /69 (Singapore), / 5
(Australia)
IEC 60065 th Edition
For /93 (China) GB 8898 (IEC 60065 th Edition)
For /61 (Korea) K 60065 6th Edition
For /96 (Taiwan) CNS 14408 (IEC 60065 th Edition)
EMC Standards
For /12 (EU), /05 (UK), /51 (Russia) EN55013: 2001, EN55020: 2002
For /3 (US, Canada) FCC15
For /55 (LATAM), / 8 (Brazil) CISPR13
For /98 (AP), /69 (Singapore), / 5
(Australia)
CISPR13
For /61 (Korea) CISPR13/20

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For /93 (China) GB 1383 (CISPR13)
For /96 (Taiwan) CNS 13439 (CISPR13)
ESD Standards
The product shall withstand electro static discharges on all user accessible parts of the product.
Reference: IEC61000-4-2.
General requirement:
1. 10 arcs for positive and negative polarity for unit “on” and “off” for 1kV incremental steps.
2. Component or mechanical damage is not allowed. No loss of fixed stored data (stored in
EEPROMs).
3. Hang-ups and malfunctions are allowed, as long as the customer can “recover” from the hang-
up by pressing the Standby or ON/OFF button of the set.
4. Failures that disappear only by unplugging the AC mains cord and/or power sources are not
acceptable.
5.1.3.1 For contact discharges:
Level General
(kV)
USA
(kV)
Requirement
1 0-2 0-3 No deviations allowed.
2 >2-4 >3-4 Short perceptible deviations allowed
3 >4-5 >4-5 Normal recallable function changes allowed.
4 >5- >5- Control recallable function changes allowed.
5 - > -8 No loss of stored data allowed.
5.1.3.2 For air discharges:
Level General
(kV)
USA
(kV)
Requirement
1 0-4 0-6 No deviations allowed.
2 >4-8 >6-8 Short perceptible deviations allowed.
3 >8-10 >8-10 Normal recallable function changes allowed.
4 >10-15 >10-15 Control recallable function changes allowed.
5 - >15-18 No loss of stored data allowed.
5.2 Electrical Performance
Power Supply and performance
Build-in SMPS will be used for all models and stroke versions. All using figure '8' socket, will cater

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for all versions:
Versions Region/Country SMPS Detachable mains
cords
12 / 05 EUROPE / UK 1) 100 ~240Vac nom. (wide
range from 90V~264Vac limit)
used in all versions except
India.
Frequency: 4 ~63Hz.
EU (/12) round 2-pin
& UK (/05) 3-pin
3 NAFTA UL flat pin (non-
polarized)
55 LATAM INMETRO certified
round 2-pin
98 APAC EU round 2-pin
94 India 2) 100 ~310Vac limit (India
compatible with up cost) used
only for India.
Frequency: 4 ~63Hz.
EU (/12) round 2-pin
All requirements per defined for each country should be met with sufficient testing.
Battery information and playtime: N.A
Power consumption at nominal AC input:
1. CD play mode at 1/8 P-rated output power : ≤ 160W
2. Low Power Standby Mode (Demo OFF) : ≤ 40W
(Demo ON) : ≤ 40W
Bluetooth and WiFi
5.2.2.1 Bluetooth
General Part
Bluetooth module
BT Audio
Description Normal Limited unit remark
Frequency Response ? Hz ~16kHz + / - 1.5 dB dB
S/N (A-weighted) 55 50 dBA
Channel Separation 55 50 dBA
THD + Noise ( 0dB, 1Khz ) <1.5%
Bluetooth at Set Level
10%THD OUTPUT POWER (EQ:FLAT) 50 X 4 (-1dB) W
Connected distance 10 8 meter
NFC: Built-in
Connected distance Normal:2.5cm Limit:1.5CM CM
5.2.2.2 WiFi: N.A

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Clock specification
TECHNIAL DESCRIPTION
SOFTWARE IMPLEMENTED CLOCK / TIMER FUNCTION WITH 32.768kHz QUARTZ OSCILLATOR.
GENERAL PART
Timer Setting : Clock and Timer
Timer Wakeup Mode : CD/USB/Tuner
Remarks Time Setting : /12 version for 24hrs /3 version for 12hrs
Volume at Wakeup : 12 level Volume
No of Alarm Timer Settings : 1 Alarm timer,
Clock Accuracy : Nom : 1 sec/day Limit : 2 sec/day
INDICATORS
Display Type : LCD
AM/FM Tuner:
FM
/AM
tuner
Module:
xxx
GENARAL PART
WAVE RANGE VERSI N T LERANCE TUNING GRID
FM 8 .5 – 108.00 MHz /55 QUARTZ
PRECISION 100kHz
AM 530 -1 00kHz /55 QUARTZ
PRECISION 10 kHz
AERIAL
FM : PIGTAILTYPE ANT WIRE 5Ω
AM :FRAME ANT.
ELECTRICAL DATA
A.M Nom Limit Unit FM Nom Limit Unit
Search Tuning Sensitivit α26 +/-10 α26 Tuning search sensitivit 28 35 dBf
Amplification Reverse - 2 -4 dB Search time digital tuning
s stem. 60 S
Distortion ( RF 50mV, M 80% ) 3 5 % Distortion ( RF 1mV, Frq
Dev.75 kHz ) 2 3 %
S/N Ratio 45 40 dB S/N Ratio 50 45
Modulation Hum 50 45 dB
Overall Frequenc Response:
63Hz – 12.5KHz - ±3 dB
Amplification Reverse 0 -4 dB
FM Frequency (MHz)
Noise
Limited
Sensitivity
26 dB
Image
Rejection
IF
Rejection
Large
Signal
Handling
FM Nom. 18 116 dBf
88.0 Lim. 22 108 dBf
FM Nom. 18 116 dBf
98.0 Lim. 22 108 dBf
FM Nom. 18 116 dBf
107.0 Lim. 22 108 dBf
Units dBf dB dB dBf

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AM Frequency (KHz)
Noise
Limited
Sensitivity
26 dB
Image
Rejection
IF
Rejection
Large
Signal
Handling
MW Nom. 70 1000
610K
Hz
Lim.
75
500
MW Nom. 65 1000
1000KHz Lim. 73 500
MW Nom. 65 1000
1440 kHz Lim. 73 500
Units dBuV dB dB mV/m
Remark: AM Performance based on the field test result
Susceptibility to unwanted
signals(CPU,SMPS,AMP,DSP ):
Limited(d
B)
Normal
(dB) Remark
-15dB -20dB Refer to self-pollution curve also
Electrical Miscellaneous (NA)
5.3 Audio Performance (*1)
General Part
Output Stage
Protection:
NA Temperature
:
Yes Short Circuit: Yes
Indicators
Standby Mode Indicator: Clock Display Active
Power Standby Mode: LED Turns Off
Electrical Data
DSC: YES Hum (Vol
min
--- default vol) 0.5mV
DBB: YES Hum Vol max 1.2mV
NX Bass: Y THD,Maximal <1%
Treble: N.A SNR @standard output (A-weighted) (*1):
≥
55dB
Loudness: N.A SNR @standard output
(Un-weighted):
≥ 50
Dba
Amplification Reserve 2dB
Acoustic Noise /Hum ( Volume Max.) ( A - weighted
) 33 -36
dbA
(1.2mV
-
1.5mV)
Audio
Input
Audio Input Sensitivity(±3dB) rated output power at 1kHz Audio Output (*1)
Tuner FM 6 .5kHz, Modulation (Limit:-6dB) Line Out(Left/Right) NA
CD/MP3 0dB track (Audio Disc 1, Track 1) Headphone RL =2x 16Ω 0dB 1KHz
sine wave
USB 0dB 1KHz sine wave( 2.0HS)
AUX1(back) 2V±200mV; Rin≥22kΩ
MP3_link(front) 2V±200mV; Rin≥22kΩ
Output Power At THD=10%, 1kHz/5kHz Sine Wave
Main Operation
for series/ all
version (rms)
3000W
CD/USB 3000W±0.5dB 3000W±0.5dB 3000W±0.5dB ( At Cold
Condition
BT 3000W ±1dB 3000W ±1dB 3000W ±1dB

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with 10%
THD,)
( At Cold
Condition
with 10%
THD,)
Audio_in (3.5mm)/AUX 3200W±0.5dB 3200W±0.5dB 3200W±0.5dB
Headphone 450mV-0.5dB
Frequency Response
Woofer
40H---5KHz 40H---5KHz ( At Cold
Condition
with 30%
THD*2,)
Tweeter 5KHz---20KHz 5KHz---20KHz
Impedance Load: Right/Left: 4Ω 4Ω
Speaker Impedance Right/Left 8ohm//8ohm 8ohm//8ohm
Subwoofer: NA
REMARKS:
1* ) Electrical Parameters are measured at Speaker Terminals across rated impedance
Load(such as 4ohm) with Rated Input Signal in CD Mode setting in DBB/Loudness Off and
Pre-eq at Flat unless specified otherwise.
2* ) Special requirement for commercial output power, with aux in or audio_in input, increase
input level to achieve 30%THD. Normally test with one channel
5.4 Video Performance: N.A
HDMI
The unit shall fulfil the requirements as stated in the HDMI test specification Version 1.4b
Composite and Components
5.4.2.1 Composite:
Description
Test Signal
Specification
NTSC PAL
Amplitude output
100% White
1Vpp ± 10%
1Vpp ± 10%
White bar
100% White
14mV ± 10%
00mV ±
10%
Sync. Amplitude
100% White
286mV ± 10%
300mV ± 10%
Burst Amplitude
5%
Colour bar
286mV, +1dB /
-
4dB
300mV, +1dB /
-4dB
Burst / Chroma ratio
100%
Colour bar
± 5%
± 5%
S/N luminance
100% White
≥
60 dB
≥
60 dB
S/N chroma
AM
PM
100% Red
≥
5 dB
≥
5 dB
≥
60 dB
≥
5 dB
Video Bandwidth
0.5MHz – 4MHz
4.8MHz
5.8MHz
Multi
-burst
-
1.5dB
-
5dB
+1dB/
-1dB
-
2dB
-
5dB
Chroma Subcarrier
Frequency
5%
Colour bar
3.5 9545 MHz ±
25ppm
4.433618MHz
±
30ppm
Chroma / luminance delay
2T pulse
≤
20ns
≤
20ns
Subcarrier locked/unlocked
5%
Colour bar
locked
locked

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DC Level
0% Black
≤
1V
≤
1V
5.4.2.2 Component:
Description Test Signal Specification
Interlace/Progressive
NTSC PAL
Amplitude output 100% White 1000mV ± 10% 1000mV ± 10%
White bar 100% White 14mV ± 10% 00mV ± 10%
PbPr peak to peak 5% Colour bar 525mV ± 10% 535mV ± 10%
PbPr Output unbalance 5% Colour bar
≤
3%
≤
3%
Sync. Amplitude 100% White 286mV ± 40mV 300mV ± 10%
S/N on outputs
Y
Pb / Pr
100% White
5%
Colour bar
≥60 dB ≥60 dB
Video Bandwidth
4.2MHz
5.8MHz
Multi
-burst -1.5dB
-5dB
-1.5dB
-5dB
Video Bandwidth
(Progressive)
8.4MHz
9.6MHz
Multi
-burst -1.5dB
-5dB
-1.5dB
-5dB
DC Level
0% Black
≤
1V
≤
1V
5.5 Remote Control (refer to performance Handbook)
Parameters Req irement
Receiver Sensitivity
Receiver sensitivity
•E(0°) = 0. 0 mW/m2
•E(30°,h) = 1.12 mW/m2, γ= ± 30°
off horizontal or vertical axis
•E(45°,h) = 2.19 mW/m2, γ= ± 45°
off horizontal axis
Max
Distance
10m
.92m
5.65m
Short Operating Distance ≤ 0.1 m
Minimum Optical Viewing Angle Horizontal ( γ ) ≥ ± 60°
Vertical ( δ ) ≥ ± 30°
Electromagnetic Interference Field-strength: Eq ≤ 100 V/m at nominal 36KHz carrier
frequency.
5.6 Key components list
Item Feat re Description Q antity Remark
1 Display 1
2 Amplifier 1
3 MCU 1
Bluetooth 1
5 Real time clock 1

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5. Accessory
Model
Stroke Version /55
Region Brazil
Power Cord Attached.
AV cable N.A
Audio cable (3.5mm audio)
Tuner Antenna One FM antenna, One AM Frame antenna
Speaker cable N.A
AV cable (Video out only) N.A
USB cable N.A
Remote Control N.A
Battery N.A
Quickly guide Yes
IFU Yes
5.8 Others
6 Acoustic Performance:
6.1 System Overview
Description: 3000W (bi-amp, 4x 50W), BT, CD, Nitro, 8” woofer + 4” coaxial mid-high driver
Project type classification: B
Highlights/Risks: Power derating setting adjustment
6.2 Sound Quality Benchmarking
Must have at least 65% preference in blind listening tests
Internal benchmark: NXTR 00, more louder
External benchmark: no, 2 x NTRX500
6.3 Main Set Specifications
No. Item Req irement Test Condition / Descriptions