THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. Warranty The Bose T1 ToneMatch Audio Engine is covered by a limited 2-year transferable warranty.
The T1 ToneMatch audio engine can be used with a Bose L1™ model II or model I system. When used with the Bose L1 model II or model I system, the T1 allows you to control the sound of your instrument as well as the output of the entire system. Using proprietary ToneMatch presets and associated zEQ tonal adjustments, the T1 enables you to preserve the natural sound of instruments or vocal microphones when amplified.
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Front Panel Controls and Indicators The control panel provides all the necessary controls and indicators for operation. 1. Input signal/clip LEDs (1-4/5) – Displays the input signal status in color: Green indicates the presence of an input signal, yellow indicates a signal near clipping, and red indicates clipping. 2.
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Rear Connection Panel The rear panel provides all input/output connections. 1. IN – Analog input channels 1-3. Accepts XLR balanced cables for microphones, or ¼” TRS balanced or TS unbalanced cables for high-impedance inputs such as guitars. 2. Preamp OUT – Preamp outputs for channels 1-3. Accepts ¼” TRS balanced or TS unbal- anced cables.
Accessories ® Description Bose Part Number Vendor Part Number T1 ToneMatch Power Supply 042533 Ethercon Cable Assy 042536 svc-sien11+cable Carry Bag Accessory 042534 svc-sien11+bag Microphone Stand Bracket 042535 T1 ToneMatch audio engine ToneMatch audio engine power supply microphone stand bracket...
Main Part List T1 ToneMatch ® Audio Engine (see Figure 2) ® Item Description Bose Part Vendor Part Qty. Note Number Number Number PANEL, REAR, I/O 298733 1406-3101+0 HOUSING, TOP 298730 1468-0401+1 HOUSING, BOTTOM 298731 1468-0501+1 LID ASSY, CONSISTS OF ITEMS...
Disassembly Procedures 1. Bottom Housing Removal 1.1 Place the T1 onto a soft surface. Turn the T1 unit over onto the front panel. Using a Phillips-head screwdriver, remove the six screws that secure the bottom housing to the top housing. 1.2 At the bottom edge of the unit near the volume controls, carefully separate the bottom housing from the top housing.
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Disassembly Procedures 3. Input / Output Panel Removal 3.1 Perform procedure 2. 3.2 Using a Phillips-head screwdriver, remove the six screws that secure the RJ45 ® and Neutrik jacks to the I/O panel. 3.3 Remove the seven plastic nuts that secure the 1/4”...
Refer to the examples below. 3.3 Press the channel 1 Mute button ON. - DSP Firmware:1.2 Verify that it illuminates blue. Press the - Bose presets: 1.0 channel 1 Mute button again and verify that - Bose scenes: 1.0 it is no longer illuminated.
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Test Procedures 4.4 Measure the THD+N level at the master 8. ToneMatch ® Operational Test output jack. Verify that it is <0.05% at -20dBV. 8.1 Set up the L1 Model II system with the B1 bass module connected. 4.5 Repeat steps 4.1 to 4.4 for channels 2 and 3.
Appendix T1 ToneMatch ® Test Cables Note: In order to be able to properly test the T1 ToneMatch Audio Engine, you will need to make up a few test cables. 1. Balanced XLR Microphone Input Test Cable Parts needed: 1 - XLR male connector...
Computer with a USB 1.1 or 2.0 port and Microsoft Windows 2000 or higher installed • T1 ToneMatch AC power supply, product code 042533, or an L1 Model II power stand with a ToneMatch system cable. • USB cable, Type A to Type B Update Procedure 1.
This document refers to schematic revision 10. ® The T1 ToneMatch Audio Engine consists of a small, portable housing that contains Input and Output (I/O) connectors on an I/O PCB, a main PCB with user controls and an LCD display, as well as a removable top cover with storage for a mounting bracket.
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Theory of Operation Indicators • Signal/Clip Indicator - Indicates status of the analog input signal: • Green = normal • Yellow = high level • Red = overload • Phantom - shows red when phantom power is on • LCD - shows the menu items chosen by the selector knob Signal Path Mic and Line Inputs for channels 1, 2, and 3 Note: All reference designators apply to Channel 1.
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Theory of Operation Numerous small capacitors in the range of 100-500pF are used to reduce susceptibility to incoming EMI. Line inputs 4 and 5 Note: All reference designators apply to Channel 4. The circuits for channels 5 are identical. J2 is a balanced ¼” TRS connector that provides a short to ground when no jack is inserted to keep input noise low.
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Each input channel is fed through a dynamic processor into a three band equalizer and another ® ® parametric EQ section. Then the signal is filtered with a Bose preset or ToneMatch filter and volume/mute is applied. These post-fade signals are routed into three independent effects processor (Reverb, Modulator, and Delay).
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1K resistor and two 4.99K resistors to pins 2 and 3 of the microphone connector. This allows up to 14 mA of current into condenser mics. Software Updates Please see the Bose L1 Updater instructions for how to update T1 and L1 Model II power stand firmware. Buses DSP –...
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Theory of Operation DSP – Volume Controls U518 is an A/D used to read volume knob settings. It also communicates with the DSP through the primary SPI bus. DSP – USB Audio is passed between DSP and the TAS1020A USB chip with an I S bus labeled USB_BICK, USB_LRCLK, USB_SDIN1 and USB_SDOUT1.
IC Diagrams handbook, halfpage MLB312 Pin configuration Logic symbol PIN DESCRIPTION to A address inputs 4, 5 enable inputs (active LOW) enable input (active HIGH) 15, 14, 13, 12, 11, 10, 9, 7 to Y outputs (active LOW) positive supply voltage FUNCTION TABLE Notes 1.
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IC Diagrams PIN DESCRIPTION 3-state output enable input (active LOW) 2, 5, 6, 9, 12, 15, 16, 19 to Q 3-state latch outputs 3, 4, 7, 8, 13, 14, 17, 18 to D data inputs v i t positive supply voltage FUNCTION TABLE INPUTS OUTPUTS...
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IC Diagrams 4 BLOCKS OF ON-CHIP MEMORY 10 11 12 CORE PROCESSOR BLOCK 0 BLOCK 1 BLOCK 2 BLOCK 3 INSTRUCTION SRAM SRAM CACHE TIMER SRAM SRAM 1M BIT 1M BIT 32-BIT 48-BIT 0.5M BIT 0.5M BIT 2M BIT 2M BIT ADDR DATA ADDR...
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IC Diagrams Pin Descriptions (Continued) State During and Type After Reset Description SPIDS Input only Serial Peripheral Interface Slave Device Select. An active low signal used to select the processor as an SPI slave device. This input signal behaves like a chip select, and is provided by the master device for the slave devices.
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IC Diagrams FLASH MEMORY ARRAY SOIC Top View PAGE (256/264 BYTES) G ND RESET V CC BUFFER 1 (256/264 BYTES) BUFFER 2 (256/264 BYTES) I/O INTERFACE RESET Block Diagram Pin Configurations Asserted Symbol Name and Function State Type Chip Select: Asserting the CS pin selects the device.
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IC Diagrams PIN DESCRIPTIONS BLOCK DIAGRAM 3.3 V to 5 V 2.5 V to 5 V Hardware or Left and Internal Voltage Internal External C/SPI Right Mute Reference Oscillator Mute Control Control Data Controls Register / Hardware Configuration Reset SDOUT (M/S Selectable Left Volume...
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IC Diagrams PINOUT DIAGRAM (TOP VIEW) PINOUT DIAGRAM (TOP VIEW) 36-SOJ LOGIC DIAGRAM, EACH INVERTER FUNCTION TABLE (EACH INVERTER) INPUT OUTPUT PIN FUNCTION Pin Name Pin Function SN74LVCU04A, Hex inverter Address Inputs Write Enable TOP VIEW Chip Select 1IN+ 2IN+ Output Enable 1IN−...
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IC Diagrams IN 2 CURRENT INTERNAL SENSE REGULATORS AMPLIFIER TOP VIEW OSCILLATOR SLOPE COMP 35/330KHz COMP SHUTDOWN CURRENT 1.2V COMPARATOR COMPARATOR EN 7 LOCKOUT EXPOSED PAD COMPARATOR ON BACKSIDE 1.8V 2.60V/ 2.35V 0.7V 1.230V FREQUENCY ERROR FOLDBACK AMPLIFIER COMPARATOR COMP Functional Block Diagram PIN FUNCTIONS Pin #...
Troubleshooting Problem What to check T1 is plugged Make sure you have power at the AC outlet. Try operating a lamp or other in, power switch equipment from the same AC outlet or test the outlet using an AC outlet tester. is on, but no power.
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Troubleshooting Problem What to check Poor quality • Make sure there is no unwanted zEQ or Para EQ equalization applied. sound from a • Verify that you have selected an appropriate ToneMatch engine preset for microphone or your microphone/instrument. If you do not want to use a ToneMatch engine instrument preset, make sure ToneMatch is set to flat.
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Troubleshooting Problem What to check Poor-sounding If using the T1 with an L1 model I system: playback of a • Do not use a female 1/8” stereo-to-male ¼” stereo adapter when connecting stereo a portable device to an input channel on the L1 model I power stand. The L1 recording using model I input channels use a monaural (TS) connection.
Troubleshooting Problem What to check Unable to send • Check that the USB signal is assigned to the desired audio engine inputs. audio from a See “PC to USB” in the Prefs menu. computer to the • Verify that the audio engine input channels assigned to the incoming USB T1 via a USB signal are not muted and their volume controls are turned up.
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SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE Bose Corporation The Mountain Framingham Massachusetts USA 01701 P/N: 296137-SM Rev. 01 5/2010 (P) http://serviceops.bose.com...
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