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It is recommended to build your enclosure from ¾” 
thick MDF (medium density fiberboard). Make sure 
the enclosure is sealed airtight. 
 

Calculating External Volume 

 

1)  To calculate box volume, measure the outside 

Width x Height x Depth of the enclosure. 
Example 12” x 14”x 9” = 1512 

2)  Next you must convert cubic inches into cubic 

feet. To do this, you must divide the cubic inch 
total by 1728”. Example 1512 

÷

 1728 = .875 

Cubic feet. 

 

Calculating Internal Volume 

 

1) To calculate the internal (net) volume of the 

above box you must first multiply the thickness 
of the wood you are using by Two (2). 
Example: ¾” x2” = 1.5” 

2) Next subtract 1.5” from each of the outside 

measurements  of the box. Width 12” – 1.5” = 
10.5”. Height 14” – 1.5” = 12.5”. Depth 9” – 1.5” 
= 7.5” 

3)  Multiply the new totals (H x W x D) Example: 

10.5” x 12.5” x 7.5” = 984.375. 

4)  Next you must convert cubic inches into cubic 

feet. To do this, you must divide the cubic inch 
total by 1728”. Example 984.375” 

÷

 1728 = 

.5696 cubic feet. 

 

LIMITED WARRANTY 

 

Before shipping this product back for service call for a Return Authorization 
number. This number must be clearly marked on the outside of the box. 
 
Terms & Conditions:

 

ARC Audio

 warranties the unit to be free of any material defects 

or defects in workmanship for a period of one year and will repair this unit or any part 
thereof only if it proves to be defective as a result of normal use. In order to receive 
warranty service on this product, the owner must promptly register by filling in and 
mailing the Warranty Registration Card. 
 
Our obligation under this warranty is limited to repairing only the defective components 
of the unit thereof when it is returned, shipping prepaid, to ARC Audio. 
 
This warranty is to be considered void if the unit has been tampered with, connected 
contrary to the installation instructions in the owner’s manual, altered, damaged by 
improper input voltages or polarity, defaced, or treated in a negligent manner. 
 
All returns must be sent freight prepaid, along with $10.00 to cover return shipping and 
handling. 
 
Out of warranty service is available after the warranty expires. Cost of repair is based on 
current repair labor rates, plus the cost of shipping and handling. When returning for 
repair, pack the unit securely and send prepaid and insured to the address below. ARC 
Audio is not responsible for damage incurred during shipping. 

 

For warranty and non-warranty repairs, send to: 

ARC Audio 
4719 Green Leaf Cr. #4 
Modesto CA, 95356 

 

 

 
ARC Audio 

Technical Support can be reached at 

209-543-8706 

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