Lighting Audio L2-D210, L2-D410, L2-D212, L2-D412 Owner's Manual

T

T

N

N

E

E

M

M

E

E

T

T

A

A

T

T

S

S

Y

Y

T

T

N

N

A

A

R

R

R

R

A

A

W

W

D

D

E

E

T

T

I

I

M

M

Lightning Audio offers a limited warranty on products subject to the following terms:

• Length of warranty:

Speakers - One year replacement warranty from date of original purchase - requires proof of purchase.

Amplifiers - One year replacement warranty from date of original purchase - requires proof of purchase.

• What is covered:

This warranty applies only to Lightning Audio products sold to consumers by an authorized Lightning Audio Dealer

in the United States of America. Products purchased by consumers from an authorized Lightning Audio Dealer locat-

ed outside of the USA are covered by the authorized Lightning Audio Distributor for the country in which the prod-

ucts were purchased.

• Who is covered:

This warranty covers only the original purchaser of Lightning Audio product purchased from an authorized Lightning

Audio Dealer in the United States. In order to receive service, the purchaser must provide Lightning Audio with a

dated copy of the sales receipt stating the customer name, dealer name and product(s) purchased. Products found to

I

I

L

L

be defective during the warranty period will be replaced (with a product deemed to be equivalent at Lightning

Printed in China

Audio’s sole discretion) by Lightning Audio.

• What is not covered:

1. Damage caused by accident, misuse, abuse, improper installation or operation, water or moisture, excessive heat,

theft, or shipping

2. Any cost or expense related to the removal or reinstallation of product

3. Items previously repaired, serviced or modified by an unauthorized service center

4. Any product which has had the serial number defaced, altered, or removed

5. Subsequent damage to other components

6. Any product purchased outside the U.S.

7. Any product not purchased from an authorized Lightning Audio Dealer

• Limit on implied warranties

Any implied warranties of fitness for use and merchantability are limited in duration to the period of the express

warranty set forth above. Some states do not allow limitations on the length of an implied warranty, so this limitation

may not apply. No person is authorized to assume for Lightning Audio any other liability in connection with the sale

of the product.

• How to obtain service

Defective products should be returned to your local authorized Lightning Audio Dealer for warranty service or, you

may call 1-888-881-8186 for Lightning Audio customer service. You must obtain an RA# (Return Authorization

number) prior to returning any product to Lightning Audio. Return Authorizations are valid for 30 days. You are

responsible for the shipment of defective product to Lightning Audio and you MUST include valid proof of purchase.

Mark your RA# clearly on outside of your shipping carton. Products received without a valid RA# will be refused

and returned to sender at sender’s expense.

08/2012 E.R.

1230-57621-01

S

0

10

20

30

40

50

60

70

60.0

70.0

80.0

90.0

100.0

110.0

120.0

130.0

10 100 1000

Impedance (ohms)

Excursion (mm)

SPL (dB)

Frequency (Hz)

Closed Box SPL Vented Box SPL

0

10

20

30

40

50

60

70

60.0

70.0

80.0

90.0

100.0

110.0

120.0

130.0

10 100 1000

Impedance (ohms)

Excursion (mm)

SPL (dB)

Frequency (Hz)

Closed Box SPL Vented Box SPL

0

10

20

30

40

50

60

70

60.0

70.0

80.0

90.0

100.0

110.0

120.0

130.0

10 100 1000

Impedance (ohms)

Excursion (mm)

SPL (dB)

Frequency (Hz)

Closed Box SPL Vented Box SPL

0

10

20

30

40

50

60

70

60.0

70.0

80.0

90.0

100.0

110.0

120.0

130.0

10 100 1000

Impedance (ohms)

Excursion (mm)

SPL (dB)

Frequency (Hz)

Closed Box SPL Vented Box SPL

S

AAFFEETTY

Y

CAUTION: Before installation, disconnect the battery negative (-)

terminal to prevent damage to the unit, fire and/or
possible injury.

BBUUIILLDDIINNGG AANN EENNCCLLOOSSUURREE

To work properly, the walls of the enclosure must be rigid and not flex when subjected
to the high pressures generated by the speaker's operation. For optimum performance,
we recommend using 3/4" MDF (Medium Density Fiberboard) and internal bracing. The
enclosure should be glued together and secured with nails or screws.

PRACTICE SAFE SOUND™

Continuous exposure to sound pressure levels over 100dB may

cause permanent hearing loss. High powered auto sound systems

may produce sound pressure levels well over 130dB. Use common

sense and practice safe sound.

C

C

AARRTTOON

• (1) Lightning Audio L2 Series Subwoofer

• (1) Painted ABS decorative trim ring

R

R

EECCOOMMMMEENNDDEED

This manual outlines two specific types of enclosures that provide distinctly different
performance. This section is to help you decide which type is best for your application.

SSEEAALLEEDD EENNCCLLOOSSUURREESS

Sealed enclosures are the simplest to build. The most important part of building a
sealed enclosure is to make sure that the enclosure is airtight. Using glue and some
type of sealant on all seams will ensure solid construction and prevent air leaks. The
box volume will directly impact the performance of the speaker. Larger enclosures will
provide flatter response and deeper bass where smaller boxes will provide a bump in
the response curve and generally higher output for greater SPL.

C

C

OONNTTEENNTTS

N

D

S

E

E

NNCCLLOOSSUURREES

S

CCAALLCCUULLAATTIINNGG VVOOLLUUMMEE

Calculating volume is merely a matter of measuring the dimensions in inches and using
the formula: H x W x D divided by 1728 (cubic feet). See block below.

Box Volume Height"x Width"x Depth

"

Divided by (cubic feet) 1728

If two facing sides are of uneven length, add them together and divide by two to take
the average. Using this number will give you the volume without the necessity of calcu­lating the box in sections and adding the sections together. The thickness of the baffle
material reduces the internal volume so this must be subtracted from the outside
dimensions to determine the internal volume. The speaker itself also reduces the inter­nal volume. The amount of air displaced by each model is listed on the specification
sheet and should also be subtracted from the gross volume calculation.

LL22--DD221100

LL22--DD441100

AAddvvaannttaaggeess ooff sseeaalleedd eenncclloossuurreess::

• Small enclosures

• Linear (Flat) response

• No port noise

• High power handling at all frequencies

• Excellent for sound quality

• Extended low frequency output when compared to vented enclosures

VVEENNTTEEDD EENNCCLLOOSSUURREESS

Vented enclosures vary only from the sealed enclosure in that a vent or port is added to
“tune” the enclosure. The enclosures recommended are designed for great overall per­formance. Larger boxes tend to be easy to tune to lower frequencies while medium and
small boxes are easier to tune to higher frequencies. The vented design is less linear in
response than the sealed box but with noticeably more output at the tuning frequency.

AAddvvaannttaaggeess ooff vveenntteedd eenncclloossuurreess::

• Higher average output than sealed

• Tuning frequency can be easily adjusted by changing port length

• Deep bass response with lower power requirements

• Great for high output with limited power

TThhee ggrraapphhss ttoo tthhee rriigghhtt aarree ssaammpplleess ooff hhooww tthhee FF33 ddrroopp--ooffff ppooiinntt ddiiffffeerrss
bbeettwweeeenn sseeaalleedd aanndd vveenntteedd eenncclloossuurreess..

LL22--DD221122

LL22--DD441122

2

S

S

EEAALLEED

E

E

NNCCLLOOSSUURREES

D

S

NNOOTTEE::

NNOOTTEE::

Vb i

s the GROSS volume, which is the TOTAL internal volume, INCLUDING speaker DISPLACEMENT.

All external dimensions were based on the use of 3/4" (1.90cm) materials.

n using enclosures other than recommended, call Technical Support for correct application.

Whe

OOppttiimmuumm SSeeaalleedd EEnncclloossuurree

SEALED ENCLOSURES 10" 12"

Vb- Gross Internal Volume cu. ft. 0.65 0.86

(Liter) (18.40) (24.35)

F3- -3dB Point (Hz) 40 / 41.4 38.3 / 39.4

Qtc- Enclosure Damping 0.90 / 0.98 1.13 / 1.18

H - Height-inch 12.0 14.0

(cm) (30.48) (35.56)

W - Width-inch 14.0 15.50

(cm) (35.56) (39.37)

D - Depth-inch 10.0 10.0

(cm) (25.4) (25.4)

L2-D210 / L2-D410 L2-D212 / L2-D412

SSeeaalleedd EEnncclloossuurree RRaannggee

SEALED ENCLOSURES 10" 12"

Vb- Volume Range cu. ft. 0.50 to 0.75 0.75 to 1.25

(Liter) (14.16 to 21.24) (21.24 to 35.40)

L2-D210 / L2-D410 L2-D212 / L2-D412

NNOOTTEE::

NNOOTTEE::

SSppeecciiffiiccaattiioonnss ssuubbjjeecctt ttoo cchhaannggee wwiitthhoouutt nnoottiiccee

V

V

EENNTTEED

Vb i

s the GROSS volume, which is the TOTAL internal volume, INCLUDING speaker and port DISPLACEMENT.

E

E

NNCCLLOOSSUURREES

D

S

All external dimensions were based on the use of 3/4" (1.90cm) materials.

n using enclosures other than recommended, call Technical Support for correct application.

Whe

OOppttiimmuumm VVeenntteedd EEnncclloossuurreess

VENTED ENCLOSURES 10" 12"

Vb- Gross Internal Volume cu. ft. 1.48 1.96

(Liter) (41.90) (55.50)

Fb- Tuning Frequency (Hz) 38 Hz 36 Hz

F3- -3dB Point (Hz) 30.7 / 31.2 30.6 / 31.4

H - Height-inch 12.0 15.25

(cm) (30.48) (38.73)

W - Width-inch 21.0 25.0

(cm) (53.34) (63.50)

D - Depth-inch 14.0 12.0

(cm) (35.56) (30.48)

P - Port Diameter and

Length-inch (1) 3 x 9.4 (1) 4 x 14.5
(cm) (1) (76.2 x 23.87) (1) (10.16 x 36.83)

L2-D210 / L2-D410 L2-D212 / L2-D412

NNOOTTEE::

The po

Number of ports noted in ( )

SSppeecciiffiiccaattiioonnss ssuubbjjeecctt ttoo cchhaannggee wwiitthhoouutt nnoottiiccee

rt shown can be placed on any face of the enclosure as long as the port ends are not obstructed.

3