BZX-7 user`s manual
Contents
1. IN OUT SIGNAL CONNECTION DIAGRAM m IN OUT SWITCH SWITCH VIA INPUT OUTPUT POSITION SOURCE SUBWOOFER MID HIGH IN FRONT ON ON ON l REAR ON OFF OFF aE OUT FRONT ON OFF OFF REAR ON ON ON 1 G F TWEETER T T MID RANGE ii SUBWOOFER Ewe Mounting and installation Your new Blitz Series crossover comes complete with all required mounting hardware Mark the location for the mounting screw holes by positioning the crossover where you wish to install it and use a scribe or one of the mounting screws inserted in each of the mounting holes to mark the mounting surface If the mounting surface is carpeted measure the hole centers and mark with a felt tip pen Before attempting to drill the mounting holes take note of any wires lines or other devices in your vehicle which may be located behind the mounting surface Then drill pilot in the mounting surface for the mounting screws and insert then Tighten the screws securely TAPPING SCREW BTS 1 49 x12N x 4 SPRING WASHER SW 49 B x 4 PLAIN WASHER PW 4 B x 4 Noise CHECK and SYSTEM adjustment NOISE CHECK Check the entire audio system for noise before permanently securing the CROSSOVER mounting 1 Start the engine 2 Turn the audio system on 3 Rev the engine and vary the2. ERIOUSLY DAMAGE THE AUDIO SYSTEM TROUBLE SHOOTING GUIDE PROBLEM POSSIBLE CAUSE 1 There is an audible distortion at a low Output levels NOT set correctly volume level 2 A whining sound can be heard through the Check the red power wire It muse be connected speakers when the audio system is at low directly to the battery Check the system s volume with the engine running The whining ground point It muse make good contact with noise remains unchanged or seems to chassis ground bare metal disappear when the volume level is The radio and the CROSSOVER must be increased grounded at the same reference point 3 There is a motor boating type of sound Check the red power wire It must be connected when the engine is running and the audio directly to the battery Check the system s system volume is set at a reasonably high ground point It must make good contact with level chassis ground bare metal limited Warranty policy All Blitz products are carefully constructed and thoroughly tested before shipment Products purchased in the USA are warranted to be free of defects in material and workmanship for two 2 years from the date of purchase This warranty is limited to the original retail purchase Should the product fail due to factory defects in material or workmanship your unit will be repaired or replaced at the sole discretion of Blitz To obtain warranty service you must first call our Consumer Return Hotline n
3. User s manual BZN I Way Electronic Crossover Network with Subwoofer Level Control INTRODUCTION Thank you for purchasing the Blitz High performance Electronic Crossover Rest assured you have purchased a quality product designed and engineered to give you many years un compromised musical service The Blitz Electronic Crossover has been designed using the latest in electronic technology available today When you check the list of features offered by the BZX 7 you ll know you made the right choice with a Blitz Electronic Crossover network general features precautions features and specifications system wiring mounting and installation noise check and system adjustment troubleshooting WG NY o oO Sn general features Chrome Plated Chassis Clear Acrylic Protective Cover Green Light Illumination LED Power On Indicator Front and Rear Inputs In Subwoofer Out Crossover Amp Selector and Ports Subwoofer Mid Range and High Pass Outputs with Gain Controls Slope Rate 12dB Octave Band Pass High Pass Selector on Mid Range Sub Level and Q Selector 2 20 Variable Remote Control Subwoofer Stereo Mono Selector Subwoofer Selectable Phase Shifter Adjustable Bass Boost and Bass Frequency 25 250Hz Controls Adjustable Frequency Selector Low Pass 40 400Hz Mid Range 40 7kHz High Pass 40 8kHz Frequency Multiplier x1 x10 on High Pass Output Precautions To prevent short circuits be sure
4. VOLUME of the audio system to determine if there is any unwanted noise If so turn both the audio system and the engine off Do not secure the CROSSOVER mounting screws Refer to the Trouble Shooting Guide at this manual 4 If the audio system does not have any noise securely tighten the CROSSOVER mounting screw and double check the wiring cables for safe placement SYSTEM ADJUSTMENT Preliminary Adjustments Pre setting the system provides a necessary starting point for fine tuning the entire audio system to maximum performance NOTE DO NOT MOUNT CROSSOVER UNTIL THE FOLLOWING PROCEDURES HAVE BEEN COMPLETED 1 Preset each amplifier input gain adjustment at the amplifier to half of maximum 2 Before turning the audio system on preset adjust the front rear and sub woofer output level controls as well as the front channel high pass and sub woofer channel low pass crossover points 3 Slowly turn the volume up and listen carefully for obvious trouble in sound distortion no sound no hiss total silence Turn the system off refer to Trouble Shooting Guide at this manual Caution DO NOT ROUTE AUDIO CABLES AND POWER CABLES TOGETHER THIS CAN CAUSE ENGINE NOISE IN YOUR AUDIO SYSTEM ALWAYS DISCONNECT THE SYSTEM FROM THE BATTERY BEFORE ATTEMPTING TO MAKE OR ALTER ANY CONNECTIONS THIS PRODUCT IS DESIRED FOR USE IN ANY 12 VOLTS NEGATIVE GROUND ELECTRICAL SYSTEM ONLY INSTALLING THIS PRODUCT IN ANY POSITIVE GROUND ELECTRICAL SYSTEM COULD S
5. ector you can choose a low pass crossover point for the mid output between This adjustment only applies when switch number 7 is placed on BAND PASS By turning the selector you can choose the high pass crossover points from 40Hz 8kHz Positioning this switch is at high pass mode the low pass filter cannot be used Positioning this switch at the 10 changes crossover points from 40Hz 800Hz to 400Hz 8kHz for high frequency high channel drivers See page 6 signal connection diagram Allows you to change the phase of your subwoofer 0 or 180 degrees to help compensate for timing differences between drivers For selection of stereo or mono mode subwoofer output For adjusting the subwoofer channel output signal level For adjusting the mid range channel output signal level For adjusting the high pass channel output signal level To be co To be co You ca connect To be co To be co The LED To be con is operati se indi nnected to nnected to the front chan 0 or more B X ected to nnected to the rear channel amp nnected to nel outputs this connection i m e front chan Use these connectors to deliver power grou cator lights up when the interna onal e rear channel outputs of the source unit subwoofer channel an ifier input nel amplifier left right inputs of the source unit d pre amp audio source for the subwoofer in o
6. r you ave a thi e fo Ol odules out to create a system with an unlimited number of amplifiers plifier left right inputs d and remote turn on control to the unit switching power supply is activated and the unit Adjustable bass boost and bass frequency 25Hz 250Hz Quality factor Selectable crossover frequency Subwoofer Low Pass Mid high pass Mid low pass High Pass Power supply Input impedance S N ratio Slope Rate Max output signal level Channel separation Distortion Dimensions REMOTE CONTROL UNIT 20 2 Variable 40Hz 400Hz 40Hz 800Hz 2KHz 7KHz 40Hz 8KHz 10 16V DC negative ground 10K Ohm more than 85dB 12dB Octave 7 0V RMS 60dB less than 0 05 1 8 H x 9 3 W x 6 4 D 1 SUBWOOFER LEVEL CONTROL This control sets the subwoofer level control 2 Q SELECT This control will narrow or widen the boost frequency bandwidth Q factor being sent to the amplifier for each band from Q 20 Narrow bandwidth steep slope to Q 2 Wide bandwidth gentle slopes System wiring
7. to disconnect the negative battery ground lead before wiring the system up When you finish the installation be sure to make one more check to be sure everything is done correctly Reinstate all car parts that were removed Reconnect the negative battery ground lead features and specifications 3 FP 10 im 15 16 17 18 19 20 21 1 INPUT LEVEL CONTROL 2 SUBWOOFER FREQUENCY CONTROL 3 BASS BOOST FREQUENCY LEVEL CONTROLS 4 MID RANGE HIGH PASS FREQUENCY SELECTOR 5 MID RANGE LOW PASS FREQUENCY SELECTOR 6 HIGH PASS FREQUENCY SELECTOR 7 HIGH PASS BAND PASS SELECTOR 8 FREQUENCY MULTIPLIER 9 IN OUT SWITCH 10 SUBWOOFER SELECTABLE PHASE SHIFTER 11 SUBWOOFER STEREO MONO SELECTOR 12 SUBWOOFER GAIN CONTROL 13 MID RANGE GAIN CONTROL 14 HIGH PASS GAIN CONTROL 15 REAR CHANNEL INPUT PORT 16 FRONT CHANNEL INPUT PORT 17 IN OUT PORT 18 SUBWOOFER OUTPUT PORT 19 MID RANGE OUTPUT PORT 20 HIGH PASS OUTPUT PORT 21 POWER TERMINALS 22 LED POWER ON INDICATOR features and specifications Turning this control to adjust the input sensitivity of the set to match the radio s output Fon sein of the Low pass crossover frequency for the subwoofer channel between 40Hz and For increasing the bass boost level up to 12dB from 25Hz to 250Hz h rni iq the selector you can choose a high pass crossover point for the mid output between z 800Hz By turni g the sel
8. umber at 718 236 6948 to obtain a Return Authorization number This R A must appear on the outside of your package and on all paperwork relating to your return When returning a product to us for warranty service it must be carefully packed and shipped prepaid to R A Blitz Service Center 1600 63rd Street Brooklyn NY 11204 Crossover You must also include the following items e A copy of your sales receipt or other proof of purchase e A brief letter indicating the problem you are experiencing e include in your letter your return address daytime phone number and R A number e also include a check or money order for 15 00 for return shipping handling and insurance or provide your Visa MC number with expiration date Our obligation under this warranty is limited to the repair or replacement of the defective unit when it is returned to us prepaid This warranty will be considered void if the unit was tampered with improperly serviced or subject to misuse neglect or accidental damage www bliizaudio com
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