Sealed Bandpass Enclosure

Sealed bandpass enclosures enclose both sides of the woofer(s). An airtight enclosure is built around the front and back of the woofer and one chamber is ported to a specific frequency.

ProsCons

High power handling

Low power handling

within the operating

beyond the tuning

frequencies

frequency

Very high output within Poor to moderate

the range of the oper-

transient response

 

Sealed

ating frequencies

Poor low frequency

 

extension

Bandpass

 

(SBP)

 

 

CALCULATING (NET) INTERNAL ENCLOSURE VOLUMES

When constructing any type of enclosure, you must be aware that the outside dimensions DO NOT represent the true (Net) volume inside. Such things as woofers, ports, thickness of enclosure material, dividing walls, and any internal bracing will reduce the total amount of the actual air space available. The following worksheet has been designed to provide you with the necessary steps to accurately calculate the absolute (Net) internal volume of any given enclosure.

Calculating Cylindrical Port Volume

1.Measure the outside diameter of the port and divide by 2 for the radius.

2.Square the radius and multiply by 3.14 (π) to arrive at outside port area.

3.Multiply the area by the length of the port inside the enclosure for the port volume.

length inside

enclosure

outside

diameter

ENCLOSURE VOLUME FLOWCHART

Measure maxim um possible dim ensions

Multiply wall thickness by 2

Subtract this from each dimension to arrive at Gross Internal Dimensions

Multiply LxW xD to arrive at

Gross Internal Volume

Deduct Vf (volum e of the speaker frame) from Gross Internal Volum e

Braces?

No

Yes

C alculate brace volum e and deduct from G ross Internal Volume

 

To convert to LITERS :

You are at Net Internal Volum e

Divide in3

by 61 .03

 

 

in cubic inches (in 3 )

To convert to C UBIC FEET:

 

Divide in 3

by 1728

6

7

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Soundstream Technologies SPL 170 owner manual Sealed Bandpass Enclosure, ProsCons

SPL 170 specifications

Soundstream Technologies has made significant strides in the automotive audio industry with its SPL 170 model. This high-performance speaker system is designed to deliver an unparalleled audio experience for music enthusiasts and casual listeners alike. With a blend of advanced technologies and innovative design, the SPL 170 stands out as a go-to option for anyone looking to upgrade their vehicle’s sound system.

One of the key features of the SPL 170 is its robust construction. The speaker boasts a durable polypropylene cone that enhances sound accuracy and response, ensuring that music is delivered with clarity. Additionally, the rubber surround provides excellent durability while minimizing distortion, allowing listeners to enjoy their favorite tracks without any compromising sound quality.

The SPL 170 incorporates a sophisticated voice coil that is designed for high power handling capabilities. This means that even at elevated volumes, the speaker maintains its performance without distortion, making it perfect for those who enjoy thumping bass or intricate musical details. The high-temperature resistance of the voice coil further enhances its efficiency, offering longevity and reliability over time.

Another notable aspect of the SPL 170 is its innovative crossover technology. This component intelligently divides the audio signal, ensuring that the appropriate frequencies are directed to the right parts of the speaker. This results in a more balanced soundstage, allowing for rich bass, clear mid-range, and crisp highs. Audiophiles will appreciate the speaker’s ability to deliver a full spectrum of sound, making every listening session a thrilling experience.

The SPL 170 also features a sleek design that is sure to complement any vehicle interior. With an aesthetically pleasing look, the speaker is available in various finishes that can match different automotive styles. This makes it not only a functional upgrade but also a stylish one.

In summary, the Soundstream Technologies SPL 170 is a testament to the brand’s commitment to quality and performance. With its durable construction, high power handling capacity, and advanced crossover technology, this speaker system is well-equipped to handle anything from mellow acoustic tracks to high-energy dance music. Whether you’re an audio enthusiast or simply seeking an enhancement to your car’s sound system, the SPL 170 promises a fulfilling auditory experience that won't disappoint.