Gorilla GLW-12 - Subwoofer SPL - Free user manual and instructions

Product Type	Subwoofer
Brand	SPL
Model	Gorilla GLW-12
Cone Material	Polypropylene
Surround Material	Rubber
Voice Coil	2.5" 4-layer on aluminum former
Terminals	Nickel plated 8ga compression
Backplate	Vented T-Yoke
Dust Cap	Polypropylene molded
Basket	Textured with voice coil cooling
Spider	Poly-cotton suspension
Recommended Sealed Enclosure (Min)	1.0 cu ft
Recommended Sealed Enclosure (Opt)	1.5 cu ft
Recommended Ported Enclosure (Min)	1.5 cu ft with 4"x5" port (F3 38 Hz)
Recommended Ported Enclosure (Opt)	2.25 cu ft with 6"x7" port (F3 34 Hz)
Construction Material	0.75" (3/4") MDF recommended, baffle 1.5"

Frequently Asked Questions - Gorilla GLW-12 SPL

What is the recommended enclosure type for the SPL Gorilla GLW-12?

The SPL Gorilla GLW-12 can be used in a sealed or ported enclosure. Recommended sealed volumes are 1.0 cu ft (minimum) to 1.5 cu ft (optimal). Ported volumes range from 1.5 cu ft (minimum) with a 4"x5" port to 2.25 cu ft (optimal) with a 6"x7" port.

What size sealed enclosure should I use for the GLW-12?

For a sealed enclosure, the minimum volume is 1.0 cu ft and the optimal volume is 1.5 cu ft. These volumes include displacement of the subwoofer and port (if applicable).

What are the port dimensions for the ported enclosure?

For the minimum ported enclosure (1.5 cu ft), use a port of 4 inches wide by 5 inches long. For the optimal ported enclosure (2.25 cu ft), use a port of 6 inches wide by 7 inches long.

What material should I use to build the enclosure?

All enclosures should be made of 0.75" (3/4") MDF. When possible, make the baffle 1.5" thick and add 0.75" to the depth to compensate.

How can I improve the performance of the enclosure?

For added performance, apply a coat of fiberglass resin to the interior walls to greatly improve sealing. Adding a thin layer of poly-fill can improve response by smoothing out reflections within the enclosure.

What is the voice coil size and configuration?

The GLW-12 features a 2.5-inch, 4-layer voice coil wound on an aluminum former, ensuring high power handling and reliability.

What type of terminals does the subwoofer have?

It uses nickel plated 8-gauge compression terminals for secure and reliable connections.

Does the GLW-12 have a rubber surround?

Yes, the surround is made of rubber, providing durability and long-term stability.

What is the cone material?

The cone is made of polypropylene, chosen for its rigidity and low distortion.

What is the F3 frequency for the optimal ported enclosure?

For the optimal ported enclosure (2.25 cu ft with 6"x7" port), the F3 frequency is 34 Hz, offering deep bass extension.

USER MANUAL Gorilla GLW-12 SPL

Thank you for choosing SPL woofers. Designed and engineered in the USA, this product combines innovative technology with the finest materials to consistently deliver Absolutely State of the Art performance, sound quality, reliability, and value. This SPL product reflects our commitment to offer you unparalleled performance and quality for years of dependable service and listening enjoyment.

Features, Parameters, & Dimensions

Polypropylene Cone

Rubber Surround

2.5" 4-layer VC on Aluminum Former Nickel Plated 8ga. Compression Terminals

Vented T-Yoke Back-plate

Polpropylene Molded Dust Cap

Textured Basket with Voice Coil Cooling

Poly-Cotton Suspension Spider

GLW-10 GLW-12 GLW-15

IMPEDANCE
RE
Fs
QES
QMS
QTS
LE
DIAMETER
SD
VAS
BL
MMS
CMS
SEN
RMS/MAX
CUTOUT DIAM.
MOUNTING DEPTH

Enclosure Dimensions

Included in this manual are a number of different enclosure suggestions. These are by no means the only enclosures to use, but the provide a starting point to determine the correct enclosure for your needs many factors must be addressed (amount of power, vehicle, placement, crossovers, etc) Therefore, as always, SPL recommends that your subwoofer be installed by an authorized SPL dealer.

Enclosure Construction

All enclosures should be made of .75" (3/4") material only. When possible, make the baffle 1.5" (1 12 ) thick and add .75" (3/4") to the depth of the enclosure to compensate. All volumes INCLUDE vent/port and subwoofer displacements. DO NOT change the volume unless you plan on adding a substantial amount of bracing. For added performance, applying a coat of fiberglass resin to the interior walls will greatly improve sealing the enclosure. Adding a thin layer of poly-fill will improve response by smoothing out reflections within the enclosure.

Enclosure Recommendations

GLW-10 GLW-12 GLW-15

SEALED
MIN	.75 CU FT.	1.0 CU FT.	1.5 CU FT.
OPT	1.0 CU FT.	1.5 CU FT.	2.75 CU FT.
PORTED
MIN	1.0 CU FT.	1.5 CU FT.	1.75 CU FT.
PORT WxL	3INCH x 5.5INCH	4INCH x 5INCH	5INCH x 7.8INCH
F3 Hz	34	38	30
OPT	1.5 CU FT	2.25 CU FT.	2.75 CU FT.
PORT WxL	4INCH x 6INCH	6INCH x 7INCH	6INCH x 7INCH
F3 Hz	32	34	28

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