Rockford-fosgate Prime R1S412 User Manual download pdf (Page 2)

SEALED ENCLOSURES

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 pr

event 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.

Advantages of sealed enclosures:

• 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

BUILDING AN ENCLOSURE

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 secur

ed with nails or screws.

CALCULATING VOLUME

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.

If tw

o facing sides ar

e of une

ven length, add them together and divide by

o to tak

e 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 fr

om the gr

oss

volume calculation.

*NOTE: Vb is NET volume (internal volume needed for

oofer). Speaker, bracing and/or port displace-

ment should be added to this volume. External

dimensions are based on 3/4" (1.90cm) MDF.

NOTE: When using enclosures other than recommended, con-

tact RFTECH Support for correct application.

SAFETY

CARTON CONTENTS

CAUTION: Before installation, disconnect the battery

negative (-) terminal to prevent damage

to the unit, fire and/or possible injury.

•

(1) Prime R1 Series Subwoofer

SEALED ENCLOSURES

RECOMMENDED ENCLOSURES

Box Volume Height

x Width

x Depth

Divided b

y (cubic f

eet) 1728

Specifications subject to change without notice

Optimum Sealed Enclosure Recommendation

Recommended Sealed Enclosure Volume Range

SEALED ENCLOSURES 10" 12"

R1S410 R1S412

* Internal Volume cu.ft. (Liter) 0.75 (21.24) 1.02 (28.88)

-3dB Point (Hz) 50.9 43.5

Qtc Enclosure Damping 0.875 1.097

H Height-inch (cm) 14 (35.56) 14 (35.56)

W Width-inch (cm) 17 (43.18) 18 (45.72)

D Depth-inch (cm) 8.25 (20.96) 10 (25.40)

SEALED ENCLOSURES 10" 12"

R1S410

R1S412

Volume Range cu. ft. 0.50 to 0.85 0.70 to 1.80

(Liter) (14.16 to 24.07) (19.82 to 50.97)

PRIME R1-SVC 10" 12"

Nominal Impedance (ohms) 4Ω 4Ω

Frequency Response 24Hz - 250Hz 22Hz - 250Hz

Voice Coil Diameter 1.5” (6-Layer) 1.5” (6-Layer)

(3.8cm) (3.8cm)

Fs - Free Air Resonance 24 Hz 22 Hz

Qts 0.4 0.49

Vas - cu. ft. 3.0 6.89

(Liters) (85) (195)

Xmax 0.23” 0.25”

(5.8mm) (6.3mm)

SPL (dB @ 1w/1m) 86 dB 87 dB

Power Handling (Watts) 150 Watts RMS 150 Watts RMS

300 Watts Max 300 Watts Max

SPECIFICA

TIONS

FEATURES

• Parabolic polypropylene cone.

• 12 AWG compression terminals.

• 18 gauge stamped steel frame.

•

vailab

le in single 4 ohm.

• Optimized for sealed enclosures.

PRACTICE SAFE SOUND™

Contin

uous exposure to sound pressure levels over 100dB may

cause permanent hearing loss. High powered auto sound systems

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

sense and practice safe sound.

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Rockford-fosgate Prime R1S412 User Manual Page 2

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