Selecting An Enclosure - Soundstream SPL 15 Owner's Manual And Installation Manual

SELECTING AN ENCLOSURE

There are several different enclosure designs for different applications.
The SPL subwoofers work very well in all the following enclosure
designs. It is up to you to select the specific enclosure that will work
the best for your particular application.
Infinite Baffle
Infinite baffle is the simplest type of subwoofer installation. In this type
of installation, the woofer(s) is mounted to a baffle which is then
mounted to either the rear deck or back seat of the vehicle. The best
results are achieved when the trunk area is virtually airtight and
isolated from the passenger compartment.
Pros
• Excellent low frequency extension
• Excellent transient response
• Uses almost no trunk space
Sealed Enclosure
Sealed enclosures are relatively simple to build and install, as all that is
required is an airtight box. The larger the sealed enclosure, the more
the performance resembles that of an infinite baffle installation.
Pros
• Very good low frequency • Medium efficiency
extension
• Very good transient re-
sponse
• High power handling
Vented Enclosure
Vented enclosures use a sealed enclosure with a vent or port in the box
Pros
• Good low frequency exten- • Low power handling
sion down to the tuning fre- below the tuning fre-
quency quency
• High power handling down • Almost no output
to the tuning frequency below the tuning fre-
• Higher output than sealed
quency
enclosures
Cons
• Lower power handling
• Low to medium efficiency
Cons
SEALED
Cons
VENTED
4
SUGGESTED ENCLOSURES (Continued)
Sealed Bandpass
•
Enclosure #54
•
3
Rear = 2.8 ft sealed
•
3
Front = 2.2 ft @ 55 Hz (Four 4" x 11.5" ports) - High
output with good low frequency extension. Good for
Rock or Rap.
•
Enclosure #55
•
3
Rear = 1.3 ft sealed
•
3
Front = 2.2 ft @ 77Hz (Four 4" x 3.25" ports) - Very high output. Great
for Rap music.
Sealed Bandpass (SBP)
9