DB Drive EUPHORIA EW7 8D4, Руководство пользователя

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PRODUCT SPECIFICATIONS
Introduction
Congratulations on your purchase of a DB Drive state-of-the-art subwoofer. Your selection of a
DB Drive car audio product indicates a true appreciation of fine musical reproduction. Whether
adding to an existing system or including your DB Drive subwoofer in a new system, you are
certain to notice immediate performance benefits.
Keep Your Sales Receipt
Take this time to attach your sales receipt to the manual and put in a safe place. In case of any
unforeseen reason this product may need warranty service, your receipt will be necessary to
establish purchase date.
Recommendation
A power subwoofer’s performance is only as good as its installation. Proper installation will max-
imize the system’s overall performance. It is recommended that you have our product installed
by an authorized DB Drive retailer. However, if you decide to install it yourself, please carefully
read through this manual and take your time to do a quality installation.
IMPORTANT!
Before making any connections, disconnect the car’s battery until the installation is
completed to avoid possible damage to the electrical system.
WARNING
!
Exposure to high power sound system can cause hearling loss or damange. Listening
to your system at loud levels while driving will impair your ability to hear traffic sounds
and emergency vehicles. Use common sense when listening to your system.
Serial #___ ___ ___ ___ ___ ___ ___ ___ ___ ___ _ ___ __ _ Model #___ ___ ___ ___ ___ ___ ___ ___ ___ _ _ ___ ___
EW7 12D2 EW7 12D4 EW7 15D4
Sensitivity 1W/1m) SPL 86.402 dB 89 dB 87.93 dB
DC Resistance Re 1.99 Ω x 2 3.20 Ω x 2 3.20 Ω x 2
Inductance Le 1.128mH 1.272 mH 1.75 mH
Free Air Resonance Fo 28.356 Hz 31.747 Hz 27.64 Hz
Equivalent Stiffeness Vas 71.162 Ltr 68.802 Ltr 146.177 Ltr
Mechanical Q Qms 6.673 6.119 4.94
Electrical Q Qes 0.572 0.498 0.765
Total Q Qts 0.527 0.46 0.663
Moving Mass Mms 166.543 g 137.428 g 235.54 g
Motor Force BL 14.389 TM 18.788 TM 18.56 TM
Cone Surface Area Sd 51.472m sqM 51.472 mM 85.530 mM
Linear Excursion (1-way) Xmax 10.5mm 11mm 11mm
Mechanical Excursion Xmech 28mm 28mm 28mm
Driver Displacement Disp 0.126 cuft 0.126 cuft 0.216 cuft
TS Specs
EW7 8D4 EW7 10D2 EW7 10D4
Sensitivity 1W/1m) SPL 84.31 dB 85.106 dB 86.48 dB
DC Resistance Re 3.20 Ω x 2 2.00 Ω x 2 3.20 Ω x 2
Inductance Le 1.113 mH 1.129mH 1.79 mH
Free Air Resonance Fo 9.24 Hz 32.20 Hz 38.19 Hz
Equivalent Stiffeness Vas 3.44 Ltr 31.805 Ltr 26.90 Ltr
Mechanical Q Qms 4.04 6.249 5.13
Electrical Q Qes 0.903 0.504 0.51
Total Q Qts 0.738 0.467 0.47
Moving Mass Mms 51.67 g 130.854 g 109.94 g
Motor Force BL 10.96 TM 14.508 TM 18.02 TM
Cone Surface Area Sd 21.64 mM 34.63m sqM 34.63 mM
Linear Excursion (1-way) Xmax 7mm 10.5mm 11mm
Mechanical Excursion Xmech 19.5mm 28mm 28mm
Driver Displacement Disp 0.044 cuft 0.086 cuft 0.086 cuft