ADVANCED

MANUAL

Revision 1.5c

Update for: Bit One.1 Pc Software 1.5 Bit One Firmware 1.5.0.0 DRC Firmware 1.50 Accessories: SFC / DRC cable extension Kit Instruction for Windows 7 installation

www.audison.eu

ADVANCED MANUAL / Bit One /
1. 2. 3. 4. 5. PRODUCT DESCRIPTION.... 3 PACKAGING CONTENTS.... 3 BIT ONE and DRC INSTALLATION.... 4 CONNECTION PANELS - DESCRIPTION.... 5 4.1 Input Signals..... 5 4.2 Output Signal..... 6 4.3 Inputs - remote control outputs and power supply.... 6 CONNECTIONS.... 7 5.1 Power supply and remote turn on... 7 5.2 How to turn on/off the Bit One.... 7 5.3 Personal computer and Digital Remote Control (DRC)... 7 5.4 Low Level and Digital input signals.... 8 5.5 High Level input signals..... 9 5.6 Output Signals..... 10 BIT ONE SOFTWARE AND DRIVERS - INSTALLATION GUIDE... 11 6.1 Software installation guide.... 11 6.2 Drivers installation guide.... 13 6.3 Troubleshooting section for software installation... 17 BIT ONE SOFTWARE AND DRIVERS UNINSTALLATION GUIDE... 18 7.1 Bit One software uninstall.... 18 7.2 How to uninstall the Drivers with Windows XP.... 18 7.3 How to uninstall the Drivers with Windows Vista... 19 7.4 How to uninstall the Drivers with Windows 7... 20 HOW TO CONNECT THE BIT ONE TO THE PC... 21 8.1 OFFLINE mode.... 21 8.2 Starting up the Bit One software in TARGET mode - warnings... 22 8.3 TARGET mode..... 22 8.4 Selecting the MASTER mode Low Level inputs... 23 8.5 Selecting the MASTER mode High Level inputs... 27 HOW TO SETUP THE BIT ONE WITH THE PC... 30 9.1 Features..... 30 9.2 Main menu File..... 31 9.3 Main menu Config..... 32 9.4 Channel Map..... 34 9.5 Select a Channel.... 34 9.6 Filter Settings..... 35 9.7 Display and Settings.... 37 9.8 Selected Input..... 37 9.9 Ext. Source EQ..... 38 9.10 Set Distance and Delay.... 40 9.11 Output Level.... 42 9.12 Grafic Equalizer.... 43 9.13 Dynamic Equalization Wizard.... 44 9.14 Memory..... 46 TROUBLESHOOTING.... 47 10.1 Synchronization with the PC... 47 10.2 Background noise..... 47 10.3 Firmware upgrade - Rescue Mode.... 47 STARTING UP THE BIT ONE SOFTWARE IN TARGET MODE IN FINALIZED BIT ONES. 51 DRC - DIGITAL REMOTE CONTROL.... 52 12.1 Phone Call..... 53 12.2 SEL button - function.... 53 12.3 Bypassing the DRC.... 54 12.4 Upgrade Firmware DRC.... 54 ACCESSORIES..... 57 13.1 SFC..... 57 13.2 DRC cable extension kit.... 58 TECHNICAL SPECIFICATIONS.... 59

11. 12.

13. 14.
ADVANCED MANUAL / Bit One / 1/2

1. PRODUCT DESCRIPTION

Bit One is a signal digital processor essential to maximize the acoustic performance of your Car Audio system. It consists of a 32 bit DSP processor and 24 bit AD and DA converters. It can be interfaced with any factory system, even in vehicles featuring an integrated audio processor, since, thanks to the de-equalization function, the Bit One will send back a linearized signal. The Bit One features 21 signal inputs; 8 Hi-Level, 1 Phone, 6 Low-Level, 4 Aux, 1 Optical Digital, 1 Coax Digital. It provides 8 PRE OUT analog or digital outputs. Each output channel has a 32 band equalizer available. It also features a 66 frequency steps electronic crossover as well as BUTTERWORTH or LINKWITZ filters with 6-48 dB slopes; a digital time delay line along with an equalizer on each auxiliary input are also available. The user can select adjustments that will allow him to interract with the Bit One trough the remote controll device called DRC.

2. PACKAGING CONTENTS

- Bit One - Signal Interface Processor
- DRC (Digital Remote Control) Control Panel
- Printed Quick Start Guide
- 5.0 m / 196,85 AC Link (RJ-12) cable
- 5.0 m / 196,85 AD Link (LAN class 5S - RJ45) cable
- 3.0 m / 118,11 USB cable
- N. 4 4.2 x 38 mm self-tapping, cross head fixing screws
- 4.5 m / 177,16 DRC / ACLink cable
- N. 2 fixing brackets with 2.9 x 6.5 mm self-tapping, cross head screws

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TEST SIGNALS Track_01. sine sweep (10 min) Track_02. white noise (15 min) Track_03. pink noise (10 min) Track_04. sine wave 50 Hz - 0 dB (2 min) Track_05. sine wave 1 kHz - 0 dB (2 min) CD ROM Bit One Software 1.1 USB-ACNet Drivers 1.0 Product manual

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- DVD comprising: Test tracks encoded with Dolby Digital 5.1

TEST SIGNAL DVD

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WARNING: a PC provided with Windows XP Windows Vista or Windows 7 operating system, 1.5 GHz minimum ,
processor speed and 1 GB RAM minimum memory, are required to install the software and setup the Bit One.

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- CD ROM with: Bit One Software USB-ACNet drivers This Advanced Manual (.pdf format) Test tracks

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SURROUND TEST SIGNALS 5.1 Track_01. sine sweep (10 min) Track_02. white noise (15 min) Track_03. pink noise (10 min) Track_04. sine wave 50 Hz - 0 dB (2 min) Track_05. sine wave 1 kHz - 0 dB (2 min)
ADVANCED MANUAL / Bit One / 3
3. BIT ONE AND DRC INSTALLATION BIT ONE:

External dimensions

225 mm / 8,85

150 mm / 5,90

201 mm / 7,91

126 mm / 4,96

Mounting dimensions

4.2 x 38 mm

How to install the DRC

(provided)

35 mm / 1.38

2 mm / 1/8

32.3 mm 1,27

WARNING: do not use

3.5 mm / 0.14 13.5 mm / 0.mm / 0.mm / 2.mm / 2
16 mm / 0.mm / 0.67 12.5 mm / 0.mm / 3.54

43.5 mm / 1.71

aggressive cleaning agents or abrasive cloth to clean the display. Simply use a soft cotton cloth lightly damped with water.
ADVANCED MANUAL / Bit One / 4
4. CONNECTION PANELS - DESCRIPTION

4.1 INPUT SIGNALS

Remark: Ch1 Auto Turn ON can be
excluded in the Bit One.1 version.
negative pole (ground) positive pole
1. PRE IN low-level MASTER inputs (see section 5.4.1-2) Ch1 - Ch2 - Ch3 - Ch4 - Ch5 - Ch6 Connect here the RCA cables coming from the main analog signal source. If these inputs are used, the MASTER SPEAKER IN inputs can not be used. 2. AUX1 AUX2 auxiliary low-level STEREO inputs (see section 5.4.3-4) Connect here the RCA cables coming from additional analog signal sources. 3. DIGITAL IN S/PDIF digital inputs (see section 5.4.5-6) The applicable signal must be a 48 kHz/24bit max. STEREO signal. COAXIAL. Connect a 75 ohm shielded cable. OPTICAL. Connect an optical fibre cable with TOSLINK connector. 4. SPEAKERS IN hi-level MASTER input (see section 5.5.1-2) Ch1 - Ch2 - Ch3 - Ch4 - Ch5 - Ch6 - Ch7 - Ch8 Connect here the specific cables coming from the power output of the main signal source. If these inputs are used, the MASTER PRE IN inputs can not be used. Ch1 features AUTO TURN ON (ART), providing the ability to automatically turn on/off the Bit One through the connection with the source speaker outputs. In the Bit One.1 version (check label on the bottom of the product) this feature can be disabled (see section 5.5.1). 5. PHONE input for phone hands-free kits (see section 5.5.3) SIGNAL. Connect the audio output cables coming from the hands-free kit system in use. MUTE. Connect the hands-free kit remote control (MUTE/PHONE MUTE).

damage to the Bit One. After applying a 12V power, wait at least 20 seconds before turning the Bit One on. 4. USB (section 5.3) USB (B) connection plug, to connect the processor to a PC and manage its functions through the Bit One software. The connection standard is USB 1.1/2.0 compatible. 6
ADVANCED MANUAL / Bit One / 5

5. CONNECTIONS

5.1 POWER SUPPLY AND REMOTE TURN-ON ATTENTION: to power the Bit One, use 1 mm2 (16 AWG) min. cables.
POWER SUPPLY REMOTE TURN ON

A M P L

(section 5.2)

F I E R S

L: 7 mm (5/16)

(section 5.2) Ground

Not provided suggested fuse T1A-Delayed

Fuse Holder

12V Battery Ground
Remark: The Bit One is internally
protected by a fuse-resistor soldered on its printed circuit board. To replace it, contact a service centre. The application of an external fuse is recommended, though it is not indispensable.

2 (section 5.2)

or other
5.2 HOW TO TURN ON/OFF THE BIT ONE
The Bit One is on when the Audison logo lights up in blue. After receiving the turn-on input the Bit One takes 9 seconds to become operative. It can be turned on / off in the following ways: 1. Push the DRC main control switch (to turn on). Keep the DRC main control knob pressed (to shut down). In this case no other connections Remote In / KEY SWITCH are required, but they can coexist (see section 12). 2. Connecting one of the Remote In plugs using a Remote signal coming from one source, the KEY SWITCH connection is not required, but it can coexist. 3. Through the KEY SWITCH ON OFF. Every time you turn on / off the car ignition key, the Bit One will turn on / off. If this control is used, KEY SWITCH MEM can not be used. 4. Through the KEY SWITCH MEM. If the Bit One was turned off through the KEY SWITCH MEM connection, it will automatically turn on again by turning the KEY SWITCH MEM itself. If it was turned off through a different method (ex. through the Remote or the DRC) while the KEY SWITCH MEM was still active, the Bit One will not turn on again through the KEY SWITCH MEM; you will have to turn it on through either the DRC or the Remote. If you use the KEY SWITCH MEM, the KEY SWITCH ON OFF can not be used. 5. Through the SPEAKER IN CH1. The AUTO TURN ON (ART) activates by connecting the amplified head unit output to the SPEAKER IN CH1 input channel, the ART can be disabled on the Bit One.1 (check the label on the bottom of your Bit One to know its version) by opening the product and removing the jumper as shown in the picture (see section 5.5.1). 6. Automatically through the hands-free phone kit (see section 5.5.3), with the Bit One mute control turned off.

5.3 PERSONAL COMPUTER and DIGITAL REMOTE CONTROL (DRC)

DRC IN

TO THE SYSTEMS AMPLIFIER ACLink PROVIDED DRC / ACLink cable
(4,5 m / 177,16 in provided see section 13.2)
DRC/ACLink cable (provied)

USB cable

5.4 LOW-LEVEL AND DIGITAL INPUT SIGNALS
1. PRE IN - Ch1/Ch6 analog STEREO signal (select 2 signals from Ch1 and Ch6)

BIT ONE Bottom Side

Pre Out Source (MAX 6 PRE OUT)
2. PRE IN - Ch1/Ch 6 - analog Audio Car Theatre
3. AUX 1 - Left/Right - analog STEREO signal
S U B E R T N C E REAR FRONT
Multi Channel Source Analog Preamplified Signal
Auxiliary Stereo Preamplifier Source
4. AUX 2- Left/Right analog STEREO signal
5. DIGITAL IN OPTICAL Digital S/PDIF STEREO signal

TOSLINK connector

Signal: STEREO Max 48 kHz / 24 bit

Optical fiber

6. DIGITAL IN COAXIAL Digital S/PDIF STEREO signal
DIGITAL IN - WARNING: the digital inputs accepts up to 48 kHz / 24 bit stereo PCM signals. So DOLBY DIGITAL (AC3) multi-channel signals coming from audio/video sources (such as the audio of a film in DVD) or DTS can not be reproduced. The output of these devices will therefore be set in STEREO mode for the signal to be reproduced. If digital signals at frequency higher than 48 kHz (96 - 192 kHz) are supplied, the Bit One locks up. In that case, turn the Bit One off, supply the adequate signal and turn it on again.
Stereo Source Digital Signal 75 ohm coax cable
5.5 HIGH-LEVEL INPUT SIGNALS
1. SPEAKER IN Hi-Level STEREO Front + Rear
CH1: Auto Turn On System (ART)

(see section 5.2.5)

BIT ONE Left Side
2. SPEAKER IN Hi-Level MULTICHANNEL
CH1: Auto Turn On System (ART) (see section 5.2.5)

Amplified Source

MAX: 8 amplified channels
Original amplified source
Bit One.1 To deactivate the ART function on Ch1 take out the Jumper as indicated in the picture.
3. CONNECTION WITH HANDS-FREE PHONE KIT
Signal: input compatible with the hands-free kit headphones or speaker output. Sensitivity adjustable via the Bit One PC software from 0.6V to 10V RMS. Mute: Bit One on. It gives priority to the phone conversation, allowing to resume the audio reproduction when the phone call is finished. Mute: Bit One off. It turns the Bit One on. When a phone call is received, the phone ringing tone is audible after around 9 seconds. Once the phone call is finished, the Bit One turns off.

7. The system will install the ACLink interface drivers:
8. If the procedure was successfully completed, the system will notify you that the driver installation has been completed. Windows XP: click on Finish; Windows Vista: click on Close; Windows 7: click on Close;
9. Windows XP:The system will now recognise the virtual serial port connected to the Bit One and will ask you to install the driver; Windows Vista: Click on Locate and install driver software (recommended); Windows 7: The system will now recognise the virtual serial port connected to the Bit One and will ask you to install the driver;
10. Windows XP: select No, not this time and click on Next; Windows Vista: click on Dont search online; Windows 7: select START = Control Panel = Device Manager, right click your mouse on the USB Serial port > > and select Update driver software= Browse my computer for driver software; >
11. Check if the Bit One Setup CD is inside the CD-ROM drive. Windows XP: select Install software automatically then click on Next; Windows Vista: click on Next; Windows 7: click the Browse button to locate the setup CD, select the CD Bit One V_15, click on OK, then on Next;
12. The following window regarding the driver certification warning will show up. Windows XP: click on Continue Anyway; Windows Vista: click on Install this driver software anyway; Windows 7: click on Install this driver software anyway;
13. The system will install the ACLink drivers:
14. If the procedure was successfully completed, the system will notify you that the driver installation has been completed. Windows XP: click on Finish; Windows Vista: click on Close; Windows 7: click on Close;
15. The installation of the Bit One software and driver is now completed (see section 8).
6.3 TROUBLESHOOTING SECTION FOR SOFTWARE INSTALLATION
- If you receive error messages when installing the software or the drivers, check if the user account you are using on your PC has admin privileges. - If the PC that is connected to the Bit One shows an error message regarding the connection with the Bit One (for example Bit One device not found), check the following points: If the DRC display shows the message audison: vol bal fad sub: There should be a fault in the PC, for instance due to a wrong installation of the software or the drivers, or due to undetectable problems, on an operating system or hardware level. If the DRC display shows the message PC control - DRC is disabled: In this case the PC is correctly initializing the ACLink bus but the fault is in the Bit One. Exit the program on the PC, turn the Bit One off then on again, then try reconnecting.
If after turning on the Bit One again one of the above messages appears, you may need to perform again the ACLink drivers installation. You may be required to uninstall and reinstall the drivers also if other applications overwriting, even partly, the USB-ACLink drivers have been installed (see section 7).

Remark: calibration is absolutely required to adapt the Bit One inputs sensitivity to the signal coming from WARNING: the head-unit level must be elevated to the maximum undistorted level. If the
head-unit level can not be tested in advance, bring the volume adjustment to approximately 80% of its maximum excursion. If the head-unit output level is set at a lower level the Bit One will produce a ground noise (hissing sound). Should such noise come from the Bit One during reproduction, you will have to repeat the calibration procedure this time at higher volume.
3. Automatic calibration Through a real-time progress bar and specific messages the software shows how the procedure is being executed. Once the procedure is completed, the window will show the message Press Next to Continue. Press BACK to go back to the previous step. Press NEXT to go ahead with the set-up procedure. Press CANCEL to exit the program.
POSSIBLE ERROR MESSAGE Input level too low Should the procedure get interrupted during the calibration with the above message showing up, check if the signal or its level is present on the indicated corresponding channel. Press CANCEL to log out the program. Press BACK to go back to the inputs set-up (see section 8.3.2).
4. How to select the speakers available in the system Speakers can be selected just by clicking on it. If the left tweeter, left midrange or left woofer are selected, the software provides the ability to automatically activate also the right tweeter, right midrange or right woofer. Once the software has been started up, this choice will affect the dedicated crossover type.
Ex.: if on the rear system only the woofers were activated, the
software will show exclusively a low-pass or band-pass filter as available.
If you want to use a coaxial system as rear channel, both tweeter and woofer need to be selected and after that (see point n. 5) you need to enter that a passive crossover connecting one to the other is present in the system, so the software will show a high-pass filter as available. Press BACK to go back to the previous step. Press NEXT to go ahead with the set-up procedure. Press CANCEL to exit the program. From this point on follows a simulation of a system made up of: - 3-way Front/ - 2-way Rear / - 2-way centerl / - mono Sub. The Bit One features 8 output channels. To multi-amplify each single speaker of the system 13 output channels would be required. In that case the software would automatically signal the limit.
Here it is how the Bit One software shows the speakers selected in the system
5. How to select passive crossovers for speaker groups While carrying out the configuration of your system, you can also set the presence of passive crossovers managing speaker functional groups in complex systems.
Ex.: The 3-way Front can be managed as:

7 Reset Default Answer: it restores the display of the warning messages if they have been disabled by unchecking Dont show me again.
8 Restore Factory Defaults: it entirely resets the Bit One back to its default settings, cancelling all the data previously saved in the Bit One (see section 10.3.11). 9 Credits: it shows the information about the Bit One software in use. 10 Exit: it exits the PC Software.

9.3 MAIN MENU: CONFIG

If you click on the Config tab, a drop-down menu shows up listing the entries shown in the image on the right of the page:
1 I/O Configuration Wizard: it provides the ability to perform a new auto-setup, taking the Bit One to the conditions required to run this operation (see section 8.3.1).
2 External Source: it provides the ability to enable or disable auxiliary sources that have not been or have been selected while performing the setup (see section 8.3.2), without repeating the auto-setup operation (see section 9.9.2).
3 Dynamic Equalization: if enabled, this feature provides the ability to improve the sound reproduction by actively acting on the variations of the frequency response when modifying the volume (see section 9.13). 4 Dynamic Equalization ON/OFF: it provides the ability to enable or disabile the Dynamic Equalization

(see section 9.13).

5 Com Setup: it provides the ability to view the list of the communication ports available in your PC and to manually specify the communication port that is connected to the Bit One.
6 Working Mode: the software has two working modes available: Standard and Expert, acting on the crossover filter section. The Standard mode features some restrictions easing in the use of the software (see section 9.6). The Expert mode does not feature any restrictions in the functions to use the software (see section 9.6). We suggest to try and use the software in Expert mode; if it is too difficult, change to Standard mode.
WARNING: when you change from one mode to the other,
the crossover filters parameters are restored back to the default ones (Default).

9.6 FILTER SETTINGS

The Bit One runs eight crossovers, one per each output channel. Each filter allows the setting of the parameters related to the channel highlighted on the Channel Map. 1. Xover L/R Link: if this field is activated, the modifications applied to one of the channels (right or left) will automatically be applied also to the other one. To activate it click on the blue flashing light. 2. Invert Phase: it provides the ability to invert the phase of the channel under examination by 180. It can be activated by selecting the green flashing light. This function can be useful to solve alignment problems among the different filtered channels. 3. Filter Type: it lets you selected the different types of filters that can be assigned to channels. Full Range Low Pass High Pass Band Pass
In STANDARD mode: According to the speaker system selected during the set up, the filter type suitable for the used speaker will be available. available. For the Front Mid-Hi only High Pass and Band Pass will be available, etc. In EXPERT mode: Any speaker system selected has any filter type available.

STANDARD MODE

Tweeter Midrange Woofer Mid-Hi Subwoofer Full
Ex.: For the Front Woofer only Low Pass or Band Pass will be
Full Range Low Pass High Pass Band Pass x x x x x x x x x x x x x Full Range Low Pass High Pass Band Pass x x x x x x x x x x x x x x x x x x x x x x x x

EXPERT MODE

WARNING: in this case pay the due attention to the
filter adjustment. Speakers have mechanical limits that must not be exceeded and could lead to damage to the components.
4. Filter Model: it lets you select the type of filter that can be applied Linkwitz (default) Butterworth When launching the software, the Bit One offers the Linkwitz as standard filter model. If you change it into Butterworth, the change will be applied only to the channel (mono) or channels (stereo - Xover Link enabled) you are working with.
Ex.: If you are adjusting the Front Woofer, the change will
only affect this channel (right and left, if linked). If you selected Band Pass as filter type, this model will be applied to both the hi-pass and the low-pass.

(0,3 5V RMS) and PHONE / OPTICAL (0,6 10V RMS) by moving the slider. adjustment operations by moving the slider.
8 You can adjust the system general volume to best perform
9.10 SET DISTANCE AND DELAY
This setting is based on an automatic system allowing to calculate the time the speaker sound takes to get to the listeners ear (Fig.1).

Preliminary remarks

Sound moves through the air at a speed of 343 mt/sec (1.125 ft/sec) and at the temperature of 20C (68F). If you know the distance from the sound emission point, you can then calculate the time sound takes to get to the listeners ear. If you set the distances of the different speakers in your system, the Bit One automatic system will change them into time (ms - milliseconds). It does not assign the delay (0,0 ms) to the farthest speaker (usually the Subwoofer) while it assigns progressively growing delays as much as the other speakers position get closer to the listening point, in order for all the emission points to reach the listening point at the same time. SET DISTANCE It lets you set the distance between the interested speaker and the listening point. Choose cm (centimetres) or in (inches). DELAY ms/default It displays the time in ms (milliseconds) calculated according to the distance. DELAY ms/fine set The calculation system of the Bit One time delays lets you also perform a manual fine-adjustment.
Fine set and Phase Delay The delay assignment according to the distance calculation is theoretical. That is, small variations need to be applied due to small errors in distance measurement, due to the back-wave reflections inside the car compartment and, mainly, due to the speaker phase problem. Two speakers reproducing two areas of frequency one close to the other (ex. Woofer and Midrange), in their crossing area will simultaneously reproduce, at attenuated level, the same frequencies. Due to the different nature of the speakers, they will show a difference in phase that, for a short frequency interval, works like a time delay. By acting on the fine set you can partly also correct problems of Phase Delay.
By acting on the fine set you can change the automatically set time delay. The delay that is varied adds up to (+ x.xx) or is deducted from (- x.xx) the value of the delay shown in the Delay / default window, that does not change the assigned value that is the one automatically assigned. If you assign a positive value ( + x.xx) with the fine delay it means to increase the delay of that speaker and so to take it further distance from the listening point. Likewise, assigning a negative value (- x.xx) means to decrease the speakers delay and therefore to move it closer to the listening point
In order for you to view how much the fine set has been manually changed to see the resulting, actually applied to the output, delay value, you have to calculate the algebraic sum of the value shown in the DELAY / default and DELAY / fineset boxes. The negative value (decreasing the delay) can not be assigned to the farthest speaker; it can only be assigned to the other speakers as they are all already delayed compared to the farthest one. If you try and give a negative value to the farthest speaker, an alert message will show (Fig.2). By acting on fine set, the word fds will light up on the corresponding channel of the Channel Map (Fig.3).

Remark: This procedure leads you to set the system at zero dB undistorted. This is not always the best solution,
since, if you listen to a track that has been registered at a lower level or with lower dynamics than the track used for the setup, a loss in dynamics may happen. So a good compromise needs to be found, depending on the listener.

9.12 GRAPHIC EQUALIZER

The Bit One software features 31-bands, 12 dB graphic equalizer for each system channel. In compliance with the ISO requirements, frequencies are equally spaced at 1/3 Oct. from 20 to 20kHz. The equalizer works according to the chosen functioning mode. So we will have: - one equalizer for the Front; - one equalizer for the Rear; - one equalizer for the Center; - one equalizer for the Subwoofer. Es.: if examining the system so far described there would be: - one equalizer for the Front Mid-Hi; - one equalizer for the Front Woofer; - one equalizer for the Rear; - one equalizer for the Center; - one equalizer for the Subwoofer. In order to change the equalizer parameters to set an equalization curve, you just have to select the channel you want to equalize from the Channel Map menu, place the mouse on the slider you want to set by left-clicking on it with the mouse. To shape an equalization curve you will just have to place the cursor of the mouse on the first slider on the left of the equalizer, right-click with the mouse moving on the equalizer sliders towards the right shaping the curve as you like (see Fig.1).
The graphic equalizer features four specific functions helping with and easing the adjustments (see Fig.2): 1. Select All once the equalization curve has been set, it provides the ability to move all the cursors at the same time; 2. Flat it brings all the cursors back to 0 dB position; 3. EQ L/R Link when active, it applies the equalization curve both to the right and the left channel simultaneously; 4. EQ Off when active, it provides the ability to disable the equalizer to check its effect without losing the settings; 5.one select button for each equalizable band providing the ability to move all the selected cursors all together.
9.13 DYNAMIC EQUALIZATION WIZARD
The sound of an audio system varies according to its reproduction volume. At low volume the noise coming from the outside of the car along with the particularly sound-damping acoustics of the car compartment contribute to limit (especially in low frequency) the system performance. Generally speaking while adjusting the system you need to take into consideration that the adjustments performed at low level volume will necessarily change when turning up the volume. The Dynamic Equalization improves the listening impression by positively affecting the variation of the frequency response when volume varies. The Wizard will offer a set of screenshots to set the equalization to apply on the general frequency response. The Bit One will automatically perform a gradual interpolation of the data, following the signal level and so acting according to the system listening volume. Two operational modes are available:

1. Connect the PC to the audio system where the DRC is installed (Bit One or AC Link Interface for TH amplifiers) using a USB cable.
2. Turn on the Bit One or the TH amplifier, so that the DRC is on. 3. Launch the software DRC_upgrade_firmware_1.50.exe.
4. Wait for the PC to synchronize with the DRC ( scanning for devices).
5. If the PC correctly synchronizes with the DRC, click on DRC Upgrade to V 1.50.
6. A warning pop-up dialog box will appear, indicating that you have to: - close all running programs; - disable screen saver; - disable energy saving modes; - disable anti-virus softwares. Click Yes.
7. Wait until the upgrade procedure is completed.
8. A pop-up dialog box showing the message upgrade completed will appear. Click on OK.
9. Click on Quit to close the DRC Upgrade Software
ADVANCED MANUAL / Bit One / 13

13. ACCESSORIES

13.1 SFC Introduction Bench test device
SFC is a digital audio signal adaptor (S\PDIF) to place between two devices with digital input/output. The main purpose of this adaptor is to solve issues related to digital interfacing of the two devices such as: 1. Digital head unit with higher sampling frequency (96/192 kHz) while the receiver cant handle frequencies higher than 48 kHz like in the case of BIT ONE. 2. The receiver/transmitter does not feature an optical or electric coaxial input/output: the SFC can be used to recreate the missing connection. 3. Malfunctioning or anomalous noises when the head unit is set to Pause. The issue is caused by the fact that while being paused some head units strip away the digital signal carrier wave; SFC constantly provides the carrier wave to the receiver. 4. When Play is selected on the head unit and the music program is starter or during normal functioning intermittent noises can be heard even at low volume. This phenomenon is due to poor quality or insufficient level of the digital signal; SFC can recover the signal eliminating the issue. SFC is a sampling frequency converter; it converts the digital signal, inputting an S/PDIF digital signal with from 32 kHz to 192 kHz sampling frequency and outputting an S/PDIF digital signal with 48kHz sampling frequency. SFC does not alter the information travelling along the signal, it can not handle AC3 or Dolby Surround encoded signals but just stereo PCM ones and does not convert the digital signal into analog. SFC features two inputs: one coaxial electrical (75 ) and another optical (TOSLINK). You have to select which input will be used through the INPUT MODE switch. When the ERROR LED lights up, it indicates either that the input signal is not stereo PCM or that the signal is instable; in that case, the SFC goes into Mute status not to damage the devices connected to its outputs. SFC features two outputs: one coaxial electrical (75 ) and another optical (TOSLINK). Both the outputs are active and if using the BIT ONE only one output has to be connected to it.

Input stage

Low level (Pre) High Level (Spk) Digital

Output stage

Low level (Pre) Digital

Connection

From / To Personal Computer To Audison Electronics

Crossover

Filter type Filter mode and slope Crossover Frequency Phase control

Equalizer

On High Level Inputs (Speaker In) On AUX Inputs On Outputs Dynamic Equalization

Time Alignment

Distance Delay Step
W (Width) x H (Height) x D (Depth) mm/inch Weight kg/lb
audison is a part of elettromedia - 62018 Potenza Picena (MC) Italy - www.elettromedia.it 60

www.audison.eu

PRELIMINARY
Signal Interface Processor ADVANCED MANUAL
audison is a part of elettromedia - 62018 Potenza Picena (MC) Italy - www.elettromedia.it
ADVANCED MANUAL / Bit One

Product Description

Bit One is a signal digital processor essential to maximize the acoustic performances of your Car Audio system. Its made with a 32 bit DSP processor and 24 bit AD and DA converters. Its peculiarity is that it allows the system de-equalization of cars with included audio processor, to evolve and improve any cars audio system. It has 10 PRE Amp Level signal inputs, 8 Speaker Level signal inputs, optical and electrical S/PDIF digital input and PHONE IN input for the use with cellular phones handsfree kit. It provides 8 outputs both at preamplied and digital level. Each channel has 32 bands equalizer, an electronic crossover and a digital delay. To adjust the several regulations a connection with a PC is necessary.

Packaging Contents

- Bit One signal interface processor
- Printed Quick Start Guide
- 5.0 m AC Link (RJ-12) cable
- 5.0 m AD Link (RJ-45) cable

- 3.0 m USB cable

- N. 4 xing screws
DRC Digital Remote Control

- DRC control panel

- 4.5 m DRC / AC Link cable
- N. 2 xing brackets - CD ROM with: Bit One software USB-ACNet drivers This Advanced Manual (.pdf) Test tracks

Warning:

A PC with Windows XP its necessary to install the software and to perform the Bit One.

Installation

External size

Fixing size

How to x
Description of Input / Output connection panels

INPUT SIGNALS

1 PRE IN (low level inputs) Ch1 - Ch2 - Ch3 - Ch4 - Ch5 - Ch6 - AUX1 - AUX2 Connect the RCA cables coming from the analog source. 2 DIGITAL IN (digital inputs) Optical - Coaxial (S/PDIF standard) Connect the specic cables coming from the digital source. 3
3 SPEAKER IN (high level inputs) Ch1 - Ch2 - Ch3 - Ch4 - Ch5 - Ch6 - Ch7 - Ch8 Phone Connect the specic cables coming from the used sources. negative pole (ground) positive pole

OUTPUT SIGNALS

4 PRE OUT (analog low level signal) Ch1 - Ch2 - Ch3 - Ch4 - Ch5 - Ch6 - Ch7 - ChDIGITAL OUT (digital proprietary standard) AD Link - OUT

DRC IN AC Link

IN/OUT REMOTE CONTROLS
6 REMOTE CONTROLS AC Link 1 - AC Link 2

DRC IN

AC Link
7 KEY SWITCH (vehicle switch) MEM: status memory on last use - optional ON - OFF: power on - optional 8 POWER SUPPLY (vehicle battery) - 12V +

Connections

POWER SUPPLY and REMOTE IN connection
L: 7 mm (5/16) MAX: 16 AWG
1. Bit One starts/stops turning on the vehicles key. 2. Bit One remembers which way turned on/off on last use.
PERSONAL COMPUTER and DIGITAL REMOTE CONTROL connection
TO AC Link PROVIDED AMPLIFIER DRC IN
Connection: INPUT SIGNALS

PRE IN - STEREO

PRE IN - AUDIO CAR THEATRE

PRE IN - AUX 1

PRE IN - AUX 2

DIGITAL OPTICAL

DIGITAL COAXIAL
High level STEREO Front + Rear

High level MULTICHANNEL

Original amplified source
Handsfree TELEPHONE kit connection
Connection: OUTPUT SIGNALS
Output on TH amplier system (AD Link + AC Link)

TH amplifier

Output on non-TH amplier system (PRE)

SOFTWARE

Connect the Bit One to the PC through the USB connection. To start the software, click on the icon:

bit one bit one.exe

On the starting screen there is the choice between OFFLINE (Bit One not connected) or TARGET (Bit One connected) mode.
After the selection of the mode, press ENTER.
OFFLINE mode (Bit One processor not connected to the PC) In OFFLINE mode its possible to use the software without connecting the Bit One to the PC, just to improve themselves with the different processors functions. See section: MAIN PAGE. Select MENU I/O Conguration Wizard to change inputs/outputs selections (n.4 of TARGET mode).
TARGET mode (Bit One processor connected to the PC) Make sure that the Bit One is connected to the PC through the provided USB cable. Before activating TARGET mode, connect power supply to Bit One and switch it on by REMOTE-IN wire as indicated in Connections.

TARGET mode (Bit One processor connected to the PC) 1. When software starts, it scans the USB ports of the PC, searching for the Bit One; 2. Bit One found: the processor is connected to the PC; 3. Bit One NOT found: the processor is not connected to the PC; Press CANCEL to start the OFFLINE mode; 4. Inputs/outputs congration wizard; 5. Select the MASTER inputs being used (low level or high level) and the auxiliary inputs AUX1 - AUX2 - S/PDIF - OPTICAL PHONE if used; 6. Assign the processor input channels to the signals coming from the sources; 7. MASTER input level setup (low / high level). Follow the instruction shown on the windows; Note: the setup its necessary to adjust the Bit One input sensitivity in front of the signal coming from the sources; 8. Wait until the setup is completed; 9. Input level too low; 10.Selecting the MASTER High Level input, the OEM source de-equalization function will be active; 11. If the de-equalization function is active, follow the shown instructions; 12.Select the loudspeakers used in the system; 13.Select any passive crossover lter; 14.Assign the processor output channels to the corrispondent amplier being used; 15. Specify any amplier using AD Link / AC Link system.
MAIN PAGE - DSP setting - STANDARD (working) mode: EQUALIZER available for: Front L/Front R (linked) - Rear L/Rear R (linked) - Center - Sub. - EXPERT (working) mode: n.8 EQUALIZERS available for each output channel. Warning!: before disconnecting PC from Bit One go to: File FINALIZE to Bit One (it stores the data on the Bit One) 1. This area enables the selection of the speaker or speaker system, by clicking on the right channel, the text highlights and 2 the word EDIT appears; 2. This section allows to adjust the system ltering: crossover frequency, slope, alignment, time delay, phase and link (to apply the modication both on left and right). 3. Into this design its possible to select the speaker to regulate; 4. Equalizers sliders and links (to apply the modication both on left and right); 5. This display, in real time, shows the audio electrical effects; 6. These keys activate the corrispondent visualization. The Sum led enables the graphical sum of the curves.
Ext. Source EQ Selection of the signal input to listen and adjustment of the levels and equalization of the auxiliary inputs. (7) Selection of the source being used (if turned on during the initial setup) MASTER - AUX1 AUX2 OPTICAL S/PDIF PHONE (8) Equalization adjustment (not active with MASTER input) (9) Input sensitivity level to match the sources signal with the processor (10) Volume adjustment to regulate the output level between the different sources Ouput Level Volume level of the preamplied outputs 11. Key to link the sliders of all the channels It allows to move all the levels together 12. Volume level of each preamplied output 13. Main output volume level. It moves the level of whole outputs without changing it singularly 14. Sub channel volume level (specic). It performs on the channel identied as Subwoofer. Dynamic Equalizer Specialized for SUBWOOFER At low level listening, the feeling about the bass frequencies is lower than at high level listening. Better explaining, when low level listening, the subwoofer needs a higher level to feel it. When high level listening, the subwoofer level has to be linearized as the sound of the other speakers. The Dynamic Equalizer makes this regulation of the bass frequencies automatically and gradually, following the signal level and according to the listening volume of the system. To activate this function select the menu Cong Dinamic Equalizer Wizard. The software enables two different modes, ADVANCED and EASY

ADVANCED MODE (equalization available) 15. Select the Advanced mode 16. Select Low-volume and set the Min volume that is the equalization starting point. Press START. Move the sliders to set the equalization (18). Press SAVE. 17. Select High-volume and set the Max volume that is the equalization starting point. Press START. Move the sliders to set the equalization (18). Press SAVE. 19. Press X to exit. EASY MODE(xed equalization) 15. Select the Easy mode 16. Select Low-volume and set the Min volume that is the equalization starting point. Press START. Move the EQ slider to set the equalization level. Press SAVE. 17. Select High-volume and set the Max volume that is the equalization starting point. Press START. Move the EQ slider to set the equalization level. Press SAVE. 19. Press X to exit.
DRC - Digital Remote Control
Main volume control. DRC is necessary if using the digital input of the Bit One. It selects the sources and recalls the presets stored into the processor. If an amplier (TH) with AC Link system is connected to the Bit One, the DRC controls the parameters too. TURN ON/TURN OFF AND ADJUSTMENT OF VOLUME, BALANCE, FADER AND SUB VOL SRC knob: vol key: bal key: fad key: sub key: Push to turn on/turn off the Bit One. Rotate to make the adjustments selected by the following keys (default = MASTER volume) press to adjust the MASTER volume of the system connected to the Bit One press to adjust the BALANCE between LEFT and RIGHT of the system press to adjust the FADER between FRONT and REAR of the system press to adjust the volume of the SUBWOOFER of the system
a u d iso n vo l b al fa d su b
Switching on the processor, with DRC connected to the AC Link system, the display shows---------------------------------------------------------------------------------------------
SET SOURCES SELECTION----------------------------------------------------------------------------Press SRC: each pression selects a different source, (if activated during the Bit One setup). It doesnt select the PHONE IN input.
a u d iso n m a ste r a u d iso n AUX1 a u d iso n AUX2 a u d iso n D igital Ele ctric a u d iso n D igital O ptical
HANDSFREE KIT FOR CELLULAR PHONES INPUT With incoming phone call and PHONE INPUT activated, the display shows:----------------b it on e P H O N E ca ll
PARTICULAR BIT ONE FEATURES ACTIVATION-------------------------------------------------SEL Key: It enables the selection of DSP memory (Presets) Dynamic Equalizer IN level it recalls the memories (1/2/3/4) set into the Bit One switch on/off the dynamic equalizer of the processor Dynamic Equalizer automatically adjusts low frequencies levels for a Subwoofer best performance. :

audis on

D S P M e m o ry 3 4

DSP memory: Dynamic EQ :

D yn a m ic E Q O N ON OFF
B it o n e IN le vel m ------0 ------M

IN level

controls the calibration level of the MASTER source. If OEM source has its own equalization, it can change according to volume level set by the user. It is important, particularly if you use the Software function OEM De-EQ (cut off the source Equalization) do not move the volume of the source, in order to not change the timbre of the sistem. To change the overall volume, use the knob of DRC. If the listener move the volume of the OEM, to set it correctly at the level of initial calibration (in the absence of information on OEM source) insert the CD (track 1) into the source and adjust the volume (of OEM source ) to bring the cursor (+), indicated on the display, on 0.
EXAMPLE: Two way Front + Subwoofer

AMPLIFIED SOURCE

SUBWOOFER

WOOFER

TWEETER

TECHNICAL SPECIFICATIONS

Power supply Voltage Idling current: Switched off Remote IN voltage Remote OUT voltage VDC 0.5 A <0.04 mA VDC (1 mA) 12 VDC (5 mA)
Distortion - THD @ 1 kHz, 1 V RMS Output Bandwidth S/N ratio @ A weighted Channel Separation (1 kHz / 10 kHz) Input sensitivity (Low Level Inputs) Input sensitivity (High Level Inputs) Max Output Levels Input impedance (Low Level Inputs) Input impedance (High Level Inputs) Inputs
0.002 % kHz 102 dBA 75 dB / 60 dB 0.13 3.5 VRMS 1.VRMS 4.0 VRMS 24 k 5 k Low level (Pre In): Ch1Ch6, AUX1 L & R, AUX2 L & R High Level (Spk IN): Ch1Ch8, Phone IN Electrical and Optical S/PDIF(Max 192 kHz/24 bit)

Outputs

Low level (Pre Amp Out): Ch1Ch8 Digital Out: AD Link (Ch1Ch8 S/PDIF)

Crossover Filter type

12 / 24 / 36 / 48 dB

Linkwitz

6 / 12 / 18 / 24 / 30 / 36 / 42 / 48 dB Butterworth Crossover Mode Equalizer Filter type Equalizer Gain Delay Hi Pass / Low Pass / Band Pass 31 Band, ISO 1/3 Oct, 20 Hz20 kHz +/- 12 dB 022 ms (748 cm / 294.5 inch)
Size B (Base) x L (Lenght) x H (Height) mm/inch Weight kg/lb 225 x 150 x 32.3 / 8.85 x 5.90 x 1.27 1.345 / 2.965