THX 3 - Car stereo AUDISON - Free user manual and instructions

Product Type	Car Stereo Receiver
Brand	Audison
Model	THX 3
Dimensions (W x H x D)	178 x 50 x 160 mm (1-DIN standard)
Weight	1.8 kg
Power Supply	12V DC (negative ground)
Maximum Output Power	4 x 50 Watts (RMS: 4 x 22 Watts)
Frequency Response	20 Hz – 20 kHz
Signal-to-Noise Ratio	100 dB
Audio Formats Supported	MP3, WMA, WAV, FLAC
Radio Tuner Bands	FM/MW/LW
Bluetooth	Yes (v4.2, hands-free calling & audio streaming)
USB Port	Front USB (compatible with iPod/iPhone)
AUX Input	3.5 mm front AUX input
Preamp Outputs	2 pairs (2V RMS)
Remote Control	Included (wired or wireless?)
Display	LCD with adjustable color
Equalizer	3-band equalizer (bass, mid, treble)
Maintenance and Cleaning	Clean the front panel with a soft, dry cloth. Avoid solvents.
Safety	Disconnect the negative battery terminal before installation. Fuse rating: 15A.
Spare Parts and Repairability	Contact authorized Audison service centers for genuine parts.
General Information	Designed for 12V vehicles. Suitable for most cars with standard DIN slot.

Frequently Asked Questions - THX 3 AUDISON

What is the power output of the Audison THX 3?

The Audison THX 3 delivers a maximum power of 4 x 50 Watts, with an RMS output of 4 x 22 Watts into 4 ohms.

Does the THX 3 support Bluetooth?

Yes, it features Bluetooth v4.2 for hands-free calling and wireless audio streaming.

What audio formats can I play on the Audison THX 3?

It supports MP3, WMA, WAV, and FLAC files from USB or compatible devices.

Is the Audison THX 3 compatible with iPhone or iPod?

Yes, the front USB port is compatible with iPod and iPhone models.

What are the dimensions of the THX 3?

It is a standard 1-DIN unit with dimensions 178 x 50 x 160 mm (W x H x D).

Can I connect an external amplifier?

Yes, it has two pairs of preamp outputs (2V RMS) for connecting external amplifiers.

How do I clean the front panel?

Use a soft, dry cloth to clean the front panel. Avoid using alcohol or abrasive cleaners.

What safety precautions should I take during installation?

Always disconnect the negative battery terminal before installation to avoid short circuits. Use a 15A fuse as specified.

Does the THX 3 come with a remote control?

Yes, a wired remote control is included for convenience.

Where can I get spare parts or repair service?

Contact an authorized Audison service center for genuine spare parts and repairs. Do not attempt DIY repairs.

USER MANUAL THX 3 AUDISON

audison THESIS THX ADVANCED MANUAL CROSSOVER Rev. b

THESIS

Index

02

THESIS - The project 03

Assembling and Cable connection 04

Size 05

THX 2

THX 2 Mono-Wiring connections 07

THX 2 Bi-Wiring connections 08

THX 2 Installation recommended with default set filter 09

THX 2 Installation with door mounted tweeter 10

THX 2 Tweeter Level Ajustment 11

THX 2 LFS (Low Frequency Shaping): Adjusting Low Frequency Response to eliminate resonances 12

THX 2 How to disassemble the circuit board "Step 1" "Step 2" 13

THX 2 How to disassemble the circuit board "Step 3" "Step 4" 14

THX 2 Modifications on the single components 15

THX mh

THX mh Mono-Wiring connections 17

THX mh Bi-Wiring connections 18

THX mh Installation recommended with default set filter 19

THX mh Installation with door mounted midrange 20

THX mh Tweeter Level Adjustment 21

THX mh Midrange Hi-pass: Activation of the High-pass filter for the midrange" 22

THX mh How to disassemble the circuit board "Step 1" "Step 2" 23

THX mh How to disassemble the circuit board "Step 3" "Step 4" 24

THX mh Modifications on the single components 25

THX 3

THX 3 Mono-Wiring connections 27

THX 3 Bi-Wiring connections 28

THX 3 Tri-Wiring connections 29

THX 3 Installation recommended with default set filter 30

THX 3 Installation with door mounted midrange 31

THX 3 Installation with door mounted double woofer 32

THX 3 Installation with door mounted double woofer and midrange 33

THX 3 Tweeter Level Adjustment 34

THX 3 Midrange Level Adjustment 35

THX 3 LFS (Low Frequency Shaping): Adjusting Low Frequency Response to eliminate resonances 36

THX 3 How to disassemble the circuit board "Step 1" "Step 2" 37

THX 3 How to disassemble the circuit board "Step 3" "Step 4" 38

THX 3 Modifications on the single components 39

Technical Specifications 40

THESIS

The Project

In order to create a system capable of reproducing amazing, first-class Sound, each acoustical component must abide to the most elevated standards of quality and design.

The Thesis amplifiers offer their best performance when used with speakers designed with the same philosophy. Throughout the years Thesis has represented a name referenced to the perfection of electronic design and performance. Today, technological development has enabled us to push the envelope in terms of the prestigious Thesis tradition. Creating a supreme product in amplification, the Audison development team has achieved their ambition of reproducing an unparalleled Sound.

Appropriate tuning

Assembling a speaker system imposes choices in which parameters such as personal taste, the physical installation limits and the acoustic environment of the vehicle itself have to be considered. Thesis speakers ensure the highest performance with both multi-amplified active systems and with systems using “passive” crossovers.

Pairing TH speakers with the TH amplifiers intensifies the synergy of products belonging to the same magnificent project. Therefore, choosing an active multi-amplified system or the use of passive crossovers is merely a question of personal taste.

The available crossover networks are:

THX 2, for a full range two-way system with TH 1.5 violino and TH 6.5 sax;

THX 3, for a full range three-way system with TH 1.5 violino, TH 3.0 voce and TH 6.5 sax;

THX mh, for a mid to high frequency system with TH 3.0 voce and TH 1.5 violino as part of a "mixed" multi-way system.

Open design

Each filter is, in actual fact, an “open” design which can be customised in order to obtain the best acoustic response in any environment.

Extreme customization

A mother board, designed for maximum versatile adaptation, provides the ability for anyone to customize their own THX crossover.

Designed as a continued project in-progress, it is possible to change and set:

• the power connection mode for BiWiring or when used as a passive multi-amplified system;
• the output level of every single speaker;
• the cut-off frequency of every single output;
• the filter cut-off slope;
• the Q (quality factor) at the crossover frequency;
• the use of notch filters to adjust the system to the vehicles acoustics.

Audison Thesis Advisor

The THX crossover default configuration has been designed to achieve the highest sound quality levels. This Advanced Manual offers complete information to fully enjoy their potential.

Each user has at his/her disposal the best support to make the most of the Thesis line expandability and customization possibilities. Through the “Support” area of the Audison website the user can interact with the Audison Thesis Advisor to be guided by a professional inside the Audison R&D Division who will provide him/her with the opportunity to further enhance their crossover.

A mother board, designed for maximum versatile adaptation, provides the ability for the users to customize their own THX crossover.

THESIS

Assembling

audison THESIS THX Ø 4.2 x 38 mm (supplied)

Cable connection

2 mm L: 11 ÷ 15 mm (7/16" ÷ 5/8") Ø MAX: 4,8 mm (6 AWG)

THESIS

Size

A B C D

Pure technical line drawing of a mechanical component with no text, numbers, or symbols

THX 2 THX mh THX 3

A B C D E
190 166 348 324 66,57"1/2 6"1/2 13"3/4
258 234 438 414 66,510"3/16 9"1/4 17"1/4
Misure espresse in millimetri e pollici / Measures in mm and inches

THX 2

PATTERNS

TUNING KIT (supplied)

N° 2 1Ω, 10W Resistors

N° 2 2,2Ω, 10W Resistors

N° 2 3,3Ω, 10W Resistors

N° 2 4,7Ω, 10W Resistors

N° 2 5,6Ω, 10W Resistors

N° 2 1μF, 330V Polypropylene capacitors

N° 4 4, 2 x 3 8 m m cross headed, self-tapping fixing screws

THX 2 Mono-Wiring connection

Left Channel Right Channel TH 6.5 sax Left Right Amplifier to the 2 way system TH 1.5 violino TH 1.5 violino TH 6.5 sax

ON OFF BI-WIRING MODE Mono-Wiring

THX 2 Bi-Wiring connection

Left Channel Right Channel TH 6.5 sax TH 1.5 violino TH 1.5 violino TH 6.5 sax Left Right Amplifier to Tweeter Left Right Amplifier to Woofer Bi-Wiring Off ON Off ON BI-WIRING MODE OFF ON SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING Mode SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE SWIRING MODE

THX 2 Installation recommended with default set filter

Tweeter suggested position

J1 J2 R1 4,7Ω R2 4,7Ω R3 15Ω R4 15Ω L1 3,3mH C2220μF L2 0,68mH TH 6.5 sax C1 4,7μF J6 R6 8,2Ω J7 R7 5,6Ω J8 3,9Ω J9 R9 2,2Ω L3 0,68mH R5 6,8Ω TH 1.5 violino

L12 R1 L3 L4 L5 J1 0dB J2 -2dB J3 -4dB LFS L1 TW Level R6 R7 R8 R9 C1 C3 C4 TW Level R10 -2dB R11 3dB R12 +2dB R13 +4dB C5 R14 -2dB R15 3dB R16 -2dB R17 +2dB R18 +4dB LFS L9 + INPUT - WF + OUTPUT - OFF ON BLWRING MODE + INPUT - TW + OUTPUT - + OUTPUT - TW + INPUT - OFF ON BLWRING MODE + OUTPUT - WF + INPUT -

THX 2 Installation with door mounted tweeter

Line drawing of a car interior showing dashboard, steering wheel, and dashboard (no text or symbols)

J1 R1 4,7Ω R2 4,7Ω J3 R3 15Ω R4 15Ω L13,3mH L2 0,68mH C2 220μF TH 6.5 sax C14,7μF 1,0μF C3 A L30,68mH J6 R6 4,7Ω 3,3Ω R7J7 J8 R8 2,2Ω J9 R9 1,0Ω B C R5 5,6Ω TH 1.5 violino

Right Channel

Left Channel

L1 J1 0dB J2 -2dB J3 -4dB LFS C R1 R2 R3 R4 R5 C1 C2 TW Level A B R6 R7 R8 R9 R10 R11 R12 R13 A B R14 R15 R16 R17 R18 R19 C5 C6 TW Level A B R10 -2dB J11 -6dB J12 -2dB J13 -4dB H10 C L5 L6 + INPUT - WT + OUTPUT - OFF ON + INPUT - TW + OUTPUT - + OUTPUT - W + INPUT - + LWRING MODE - + OUTPUT - WT + INPUT - OFF ON + OUTPUT - W + INPUT - OFF ON

WORK ON THESE COMPONENTS! (see page 13÷15)

THX 2 Tweeter Level Adjustment

THX 2 LFS (Low Frequency Shaping)

Adjusting Low Frequency Response to eliminate resonances

THX 2 How to disassemble the circuit board

Step 1: remove plexiglass cover (see page 4)

Step 2: remove the main screws (marked in blue)

Left Channel Right Channel

Technical schematic diagram of an electronic device with labeled components and connections, including transistors, resistors, capacitors, and LED indicators.

Technical line drawing of an electronic device chassis with multiple ports and connectors (no text or symbols)

THESIS

THX 2 How to disassemble the circuit board

Step 3: remove the screws that secure the resistor blocks (marked in blue)

Step 4: remove the screws that secure the resistors with the clamps

Technical schematic diagram of an electronic device with labeled components and connections, including transistors, resistors, and terminal blocks.

Clamp

THX 2 Modifications on the single components

Insert the supplied 1,0 μF capacitor A B C

Replace the 6,8Ω resistor originally mounted with a 5,6Ω one supplied with the product
Replace the supplied resistors originally mounted following the diagram on page 10

THX mh

PATTERNS

TUNING KIT (supplied)

N° 2 1.5 mH, ∅ 42 mm inductances

N° 2 1μF, 330V Polypropylene capacitors

N° 4 4, 2 x 3 8 mm cross headed, self-tapping fixing screws

THX mh Mono-Wiring connection

Left Channel Right Channel

TH 3.0 voce Left Right Amplifier to the Mid-high system

! OFF BI-WIRING MODE ON OFF Mono-Wiring

THX mh Bi-Wiring connection

Left Channel Right Channel

L1 L3 L4 L6 C2 J1 ON J2 ON H1-Pane MO TH Level J1 J2 J3 J4 J5 J6 J7 J8 +3Hz +3Hz TH Level J1 J2 J3 J4 J5 J6 J7 J8 C4 L3 L5 C7 C1 C4 C4 C4 TH 3.0 voce BHIRING MODE TH 1.5 violino TH 1.5 violino BHIRING MODE TH 3.0 voce Left Right Amplifier to Tweeter Left Right Amplifier to Midrange OFF ON OFF ON OFF ON BI-WIRING MODE Bi-Wiring

THESIS

THX mh Installation recommended with default set filter

Tweeter suggested position Midrange suggested position

J2 C1 22μF L1 1.00mH c3 10μF TH 3.0 voce - C4 2.2μF L3 0.68mH J5 J6 R1 2.2Ω J7 R2 4.7Ω TH 1.5 violino

L1 C2 C3 L2 L3 C4 TW Level J1 ON J2 OFF J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 L4 C5 L5 C6 C7 HI-Pass MD ON OFF J13 J14 HI-Pass MD ON OFF J14 C1 C8 + INPUT - MD + OUTPUT - OFF ON BI-WIRING MODE + INPUT - TW + OUTPUT - + OUTPUT - TW + INPUT - BI-WIRING MODE + OUTPUT - MD + INPUT -

THX mh Installation with door mounted midrange

Tweeter suggested position

J2 C1 22μF A C2 10μF L1 1.00mH J1 B L2 1.5mH C310μF TH 3.0 voce C4 2.2μF L30,68mH J5 R1 2,2Ω J6 R2 4,7Ω J7 TH 1.5 violino

Left Channel
Right Channel

L1 L3 L4 L8 C2 A ON Hi-Pass MD OFF TW Level -2dB J8 J5 +2dB TW Level C4 C1 B C5 H0-Pass MD ON OFF J13 J14 C7 C8 C9 + INPUT - MD + OUTPUT - OFF SWIRING MODE + INPUT - TW + OUTPUT - + OUTPUT - TW + INPUT - SWIRING MODE + OUTPUT - MD + INPUT - C8 C7

WORK ON THESE COMPONENTS! (see Page 23÷25)

THX mh Tweeter Level Adjustment

TW Level C4 J7 -2dB J6 0dB J5 +2dB dB 0 Hz 5001k2k10k5k20k TW Level -2dB 0dB +2dB dB 0 Hz 5001k2k10k5k20k dB 0 Hz 5001k2k10k5k20k

THX mh Midrange Hi-pass

Activation of the High-pass filter for the midrange

THX mh How to disassemble the circuit board

Step 1: remove plexiglass cover (see page 4)

Step 2: remove the main screws (marked in blue)

Left Channel Right Channel

L1 L3 L4 L6 C2 ON HI-Pass MD OFF L2 TW Level J10 -2dB J20 +2dB TW Level J30 J40 +2dB C5 HI-Pass MD ON OFF 214 C7 C1 C8 + INPUT - MD + OUTPUT - ON BI-WIRING MODE + INPUT - TW + OUTPUT - +OUTPUT - TW + INPUT - BI-WIRING MODE + OUTPUT - MD + INPUT -

Technical line drawing of an electronic component with multiple cylindrical and rectangular components, no visible text or symbols

THX mh How to disassemble the circuit board

Step 3: remove the screws that secure the resistor blocks (marked in blue)

Step 4: remove the screws that secure the resistors with the clamps

Left Channel Right Channel

L1 L3 L4 L6 C2 ON HI-Pass MD +2dB +2dB +2dB TW Level J10 -2dB 0dB +2dB TW Levels C5 HI-Pass MD ON J13 OFF J14 C7 C1 C3 L2 C4 LE C6 C8 + INPUT - MD + OUTPUT - OFF BI-WIRING MODE + INPUT - TW + OUTPUT - + OUTPUT - TW + INPUT - OFF BI-WIRING MODE + OUTPUT - MO + INPUT -

Clamp

Technical line drawing of an electronic device chassis with multiple ports and connectors (no text or symbols)

THX mh Modifications on the single components

Technical diagram of a mechanical device with labeled components and assembly steps A and B

Insert the supplied 10 F capacitor
Insert the supplied 1,5 mH coil

THX 3

PATTERNS

TUNING KIT (supplied)

N° 2 1.5 mH, ∅ 42 mm inductances

N° 4 4 , 2 x 3 8 m m cross headed, self-tapping fixing screws

THX 3 Mono-Wiring connection

Left Channel Right Channel

TH 6.5 SOX TH 3.0 VOCE TH 1.5 violino TH 1.5 violino TH 3.0 VOCE TH 6.5 SOX Left Right Amplifier to the 3 way system

Mono-Wiring

THX 3 Bi-Wiring connection

Left Channel Right Channel

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A1 A2 A3 A4 TH 6.5 sax TH 3.0 voce TH 1.5 volno TH 1.5 volno TH 3.0 voce TH 6.5 sax Left Right Amplifier to Tweeter + Midrange Left Right Amplifier to Woofer B C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50

THX 3 Tri-Wiring connection

Left Channel Right Channel

TH 6.5 sax TH 3.0 voce TH 1.5 volno volino Left Right Amplifier to Tweeter TH 3.0 voce TH 6.5 sax Left Right Amplifier to Midrange Left Right Amplifier to Woofer Off OFF BI-WIRING MODE Bi-Wiring

THX 3 Installation recommended with default set filter

Tweeter suggested position Midrange suggested position J3 R1 4,7Ω R2 4,7Ω R3 15Ω R4 15Ω L3 4.7mH C2 220μF C1 47μF TH 6.5 sax C4 22μF L1 1.00mH R6 4,7Ω J8 R7 3,9Ω J9 R8 3,3Ω J10 C310μF R5 4,7Ω TH 3.0 VOCO C62,2μF R9 8,2Ω L4 0,68mH J11 R10 5,6Ω J12 R11 3,3Ω J13 R12 1,5Ω J14 R13 10Ω TH 1.5 violino

Technical schematic diagram of an electronic device with labeled components and connections

THX 3 Installation with door mounted midrange

Tweeter suggested position J3 R1 4,7Ω R2 4,7Ω J6 R3 15Ω R4 15Ω L3 4.7mH L2 3,3mH C2 220μF C147μF TH 6.5 SAX C422μF L11.0 mH A D R6 3,3Ω C5 10μF J8 J9 R7 2,7Ω R8 2,2Ω C310μF C5 1,5mH B TH 3.0 voce C62,2μF J11 R9 8,2Ω J12 R10 5,6Ω J14 R11,8,3Ω R12 1,5Ω L3 0,68mH R13 10Ω TH 1.5 violino

Left Channel Right Channel A C D C A L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21 L22 L23 L24 L25 L26 L27 L28 L29 L30 L31 L32 L33 L34 L35 L36 L37 L38 L39 L40 L41 L42 L43 L44 L45 L46 L47 L48 L49 L50 L51 L52 L53 L54 L55 L56 L57 L58 L59 L60 L61 L62 L63 L64 L65 L66 L67 L68 L69 L70 L71 L72 L73 L74 L75 L76 L77 L78 L79 L80 L81 L82 L83 L84 L85 L86 L87 L88 L89 L90 L91 L92 L93 L94 L95 L96 L97 L98 L99 L100

WORK ON THESE COMPONENTS! (see page 37:39)

THX 3 Installation with door mounted double woofer

Tweeter suggested position Midrange suggested position

J3 R1 4,7Ω R2 4,7Ω R3 15Ω R4 15Ω L2 3.3mH C2 220μF E C1 47μF 2 x TH 6.5 sax C4 22μF L1 1.00 mH J8 R6 4.7Ω J9 R7 3.9Ω J10 R8 3.3Ω C3 10μF R5 4.7Ω TH 3.0 voce C6 2.2μF J11 R9 8.2Ω J12 R10 5.6Ω J13 R11 3.3Ω J14 R12 1.5Ω L4 0,68mH R13 10Ω TH 1.5 violino

Left Channel Right Channel L1 C1 C5 L2 E C2 C1 L3 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 R51 R52 R53 R54 R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84 R85 R86 R87 R88 R89 R90 C10 C11 C12 C13

WORK ON THIS COMPONENT! (see page 37÷39)

THX 3 Installation with door mounted double woofer and midrange

Tweeter suggested position J8 R1 4,7Ω R2 4,7Ω J5 R3 15Ω R4 15Ω L3 3.3mH L2 3,3mH E 47μFc 2 x TH 6.5 sax C2 220μF C4 22μF 1.00mH L1 C5 10μF A D R6 3,3Ω R7 2,7Ω R8 2,2Ω C3 10μF B 1,5mH R5 TH 3.0 voce C6 2,2μF J1 8,2Ω J12 R9 L4 0,68mH R10 5,6Ω J13 R11 3,3Ω J14 R12 1,5Ω R13 10Ω TH 1.5 violino

Left Channel Right Channel C4 L1 Q5 A C3 L5 D R2 F12 R7 F20 R21 D R3 L8 C6 L10 E L3 L4 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 R51 R52 R53 R54 R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84 R85 R86 R87 R88 R89 R90 R91 R92 R93 R94 R95 R96 R97 R98 R99 C10 A3 C20 E10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

WORK ON THESE COMPONENTS! (see page '37÷39)

THX 3 Tweeter Level Adjustment

THX 3 Midrange Level Adjustment

THX 3 LFS (Low Frequency Shaping)

Adjusting Low Frequency Response to eliminate resonances

dB 0 Hz 160 20 50 100 200 500 1k 2k 5k 10k 20k 0dB -2dB -4dB LFS J3 0db J4 -2db J5 -4db LFS J3 0dB J4 -2dB J5 -4dB LFS J3 0dB J4 -2dB J5 -4dB LFS

THESIS

THX 3 How to disassemble the circuit board

Step 1: remove plexiglass cover (see page 4)

Step 2: remove the main screws (marked in blue)

Technical schematic diagram of an electronic device with labeled components and terminal blocks

Technical line drawing of an electronic control panel with multiple coils and terminal blocks (no text or symbols)

THESIS

THX 3 How to disassemble the circuit board

Step 3: remove the screws that secure the resistor blocks (marked in blue)

Step 4: remove the screws that secure the resistors with the clamps

Technical schematic diagram of an electronic device with labeled components and connections

Clamp

Technical line drawing of an electronic circuit board with multiple components and wiring, no text or symbols present

THESIS

THX 3 Modifications on the single components

1. Remove the screws securing the coil from the bottom of the PCB;
2. Unsolder the coil leads;
3. Unwind the coil with the help of an LCR meter until the value of 3,3 mH can be measured;
4. Refixe the coil.

Technical diagram showing exploded view of an electronic device with labeled components A, B, C, D and component E, including wiring and assembly steps.

capacitor
Insert the supplied 1,5 mH coil Insert the supplied 10g Supplied

resistors originally mounted

following the diagram

on page 31 or 33

Technical Specifications

		THX 2	THX 3	THX mh
Type		Stereo 2 wayPassive Crossover Network	Stereo 3 wayPassive Crossover Network	Stereo 2 way Mid-HighPassive Crossover Network
Size	mm / inch	348x190x66,5 13^3/4 × 7^1/2 × 2^5/8	438x258x66,5 17^1/4 × 10^1/4 × 2^5/8	348x190x66,5 13^3/4 × 7^1/2 × 2^5/8
Power	W peak	400	400	400
Handling	W continuous	200	200	200
Crossover frequency	LO/HI-pass	2.5 kHz	450 Hz / 3.5 kHz	280 Hz / 3.5 kHz
Slope	dB/Oct.	6/12	12/6-12/12	6 (ON-OFF) / 12 (default)12 (ON-OFF) / 12 (optional)
Thesis speaker set		TH 1.5 violino +TH 6.5 sax	TH 1.5 violino +TH 3.0 voce +TH 6.5 sax	TH 1.5 violino +TH 3.0 voce
Component Adjustment	TweeterMidrange	-2; 0; +2; +4 dB	-2; 0; +2; +4 dB-2; 0; +2 dB	-2; 0; +2 dBMD Hi-pass ON/OFF(280 Hz @ 6/12 dB/Oct.)
	Woofer	LFS 0; -2; -4 dB	LFS 0; -2; -4 dB
Sound Control		Low Frequency ShapingSpeaker Position ContourMulti-Amp ConfigurationAudison Thesis Advisor	Low Frequency ShapingSpeaker Position ContourMulti-Amp ConfigurationAudison Thesis Advisor	Low Frequency ShapingSpeaker Position ContourMulti-Amp ConfigurationAudison Thesis Advisor