users manual

High Performance Electronic Crossover Bass Driver Network

INTRODUCTION.

Thank you for purchasing the Blitz High performance Electronic Bass Driver. Rest assured you have purchased a quality product designed and engineered to give you many years un-compromised musical service. The Blitz Electronic Bass Driver has been designed using the latest in electronic technology available today.
When you check the list of features offered by the BZX-8, you'll know you made the right choice with a Blitz Electronic Bass Driver network.

table of contents

general features precautions features and specifications system wiring mounting and installation noise check and system adjustment troubleshooting

general features

Chrome Plated Chassis Acrylic Protective Cover Green Light Illumination Frequency Response: 20Hz-400Hz LED Power On Indicator LED Clipping Detector Input Level Controls Subwoofer Stereo/Mono Selector Subwoofer Selectable Phase Shifter Sub Level, Bass Frequency (40-400Hz) and Q. Select (2-20) Remote Control Slope Rate: 18dB RCA Input Jacks RCA Output Jacks Remote Q. Control 2-20

Precautions

To prevent short circuits, be sure 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
1. INPUT LEVEL CONTROL 2. LED POWER ON INDICATOR Turning this control to adjust the input sensitivity of the set to match the radio's output. The LED indicator lights up when the internal switching power supply is activated and the unit is operational. This indicator lights up to indicate the output voltage reaches or surpasses 7 volts RMS maximum out for the remote level control output. Low level input RCA jacks used to connect to the output of the signal source
Frequency response 20Hz-400Hz Variable Q. control 2-20 Variable boost frequency 40Hz-400Hz Input impedance 10K Ohm Maximum output 7 Volts

3. LED CLIPPING DETECTOR

4. LOW LEVEL INPUT PORT 5. SUBWOOFER OUTPUT PORT 6. SUBWOOFER SELECTABLE PHASE SHIFTER 7. SUBWOOFER STEREO/MONO SELECTOR 8. POWER TERMINALS

S/N ratio >90dB

RCA jacks used to connect to the bass amplifier line inputs. 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.
Channel separation 60dB THD 0.07% Power supply 10-16V DC, negative ground Dimensions 1.8"H x 7.9"W x 4.8"D
Use these connectors to deliver power, ground and remote turn-on control to the unit.

REMOTE CONTROL UNIT

1 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). 2 BASS FREQUENCY This control sets the center frequency of the bass boost effect from 40Hz to 400Hz. 3 SUBWOOFER LEVEL CONTROL This control sets the subwoofer level control.

System wiring

SUBWOOFER
Mounting and installation
Your new Blitz Series Bass Driver comes complete with all required mounting hardware.

BTS-x12N x 4

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.

SW 4(B) x 4 PW 4(B) x 4

Noise check and system adjustment
Check the entire audio system for noise before permanently securing the Bass Driver mounting 1. Start the engine. 2. Turn the audio system on. 3. Rev the engine and vary the 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 Bass Driver mounting screws. Refer to the "Trouble Shooting Guide" at this manual. 4. If the audio system does not have any noise, securely tighten the Bass Driver mounting screw and double check the wiring cables for safe placement.

NOISE CHECK

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 Bass Driver UNTIL THE FOLLOWING PROCEDURES HAVE BEEN COMPLETED. 1. Preset each amplifier input gain adjustment at the amplifier to half of maximum. 2. 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 SERIOUSLY DAMAGE THE AUDIO SYSTEM. The Bass Driver provides variable enhancement of bass frequencies. The level of peak boost varies from 0 to +12dB and the frequency at which peak boost occurs is adjustable from 40Hz to 400Hz. 20-Q to 2-Q boost characteristic can be adjustable. 2-Q characteristic boosts a wide range of frequencies and is useful for general sound quality enhancement. The 20-Q characteristic boosts a narrow range of frequencies and can be used to tune a subwoofer system fo rmaximum output. The Bass Driver Q adjustable should be set to the 2-Q(wide) position and the frequency control set approximately one octave below the subwoofer's resonant frequency. In vented enclosures, the roll off of the system is quite steep below the tuning frequency (typically 24dB/octave). In this case, the bass driver should be set for 20-Q(narrow) operation. Never set the Bass Driver boost frequency below a vented enclosuer's turning frequency. For maximum output from a vented enclosure, set the Bass Driver boost frequency to the tuning frequency of the enclosure. These adjustments can be made with the Bass Driver in the signal path, but make sure the effect is turned off (remote level Min.) then verify operation of the Bass Driver by increasing the boost level while listening for changes in subwoofer response. Once operation of the Bass Driver is confirmed, adjustment can proceed.

Adjusting The Bass Driver

TBOUBLE SHOOTING GUIDE

PROBLEM
1. There is an audible distortion at a low volume level. 2. A whining sound can be heard through the speakers when the audio system is at low volume with the engine running. The whining noise remains unchanged or seems to disappear when the volume level is increased. 3. There is a "motor boating" type of sound when the engine is running and the audio system volume is set at a reasonably high level. POSSIBLE CAUSE Output levels NOT set correctly. Check the red power wire. It muse be connected directly to the battery. Check the system's ground point It muse make good contact with chassis ground (bare metal). The radio and the Bass Driver must be grounded at the same reference point. Check the red power wire. It must be connected directly to the battery. Check the system's ground point. It must make good contact with chassis ground (bare metal).

limited warranty policy

B a s s
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 number 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

D r i v e r

You must also include the following items: A copy of your sales receipt or other proof of purchase A brief letter indicating the problem you are experiencing include in your letter your return address, daytime phone number, and R.A. number 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.

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