James C-Omni Cube Manual

James Højttaler C-Omni Cube

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Side 1/2

Marine Hardware

James Standard & James Premium

Page 1

Marine Ready Products

Key Features:

 High quality fastener material :

316-SS and -GR.2 Ti CP

 Passivated to further improve its natural

corrosion resistance

 Fluoropolymer coating to prevent thread

galling, seizing, and enhance corrosion

resistance

 Application of Tef-Gel for additional corrosion

resistance

Applications:

 Marine audio

 Outdoor audio

In a marine environment, speakers will be

exposed to several factors which place them at high

risk including: harsh winds, high humidity, atmospheric

salinity, and direct contact with seawater. Whether

you’re looking for an outdoor system, a sound system

for your boat, a complete distributed audio system for

your oceanside getaway or even a super-yacht, James

Loudspeaker oﬀers the necessary hardware to

withstand harsh environmental conditions and provide

long-lasting marine speaker products.

Selecting the proper hardware material is

essential for long-term corrosion control. As our James

Standard, we provide 316 Stainless Steel fasteners

which have been widely used in marine environments.

Considered the marine grade stainless, 316 Stainless

Steel is the preferred steel for service because of its

greater resistance to corrosion than other grades of

steel. Referring to the chemical composition in Table 1,

the material incorporates about 2 to 3 percent

molybdenum, which increases corrosion resistance

particularly against pitting and crevice corrosion in

chlorides and other industrial solvents. Furthermore,

our 316-SS hardware is passivated in nitric acid after

its production to facilitate the natural formation of a

thin, transparent oxide ﬁlm that protects the stainless

steel from corrosion.

In addition, we provide optional CP-GR.2

Titanium fasteners as our James Premium.

Commercially Pure (CP) Grade 2 Titanium is used

primarily for its superior corrosion resistance. It resists

pitting, crevice, and stress corrosion cracking in

seawater, marine atmospheres, and a broad range of

acids, alkalis, and industrial chemicals. The corrosion

resistance results from a very thin (~10nm), stable,

continuous oxide layer that regenerates

instantaneously if any oxygen is present. Table 2

presents the chemical composition of CP-GR.2

titanium. Similarly to the 316-SS hardware, our CP-

GR.2 Ti hardware is passivated in citric acid after its

production to further assist its natural corrosion

resistance and extend product life.

All of our marine grade products undergo a

process which protects them against the elements

even under the harshest conditions. To further protect

our hardware from corrosive surroundings, both our

CP-GR.2 Ti and 316-SS fasteners are applied with

FluoroKote#1 coating. A proprietary fluoropolymer

coating that

provides exceptional

corrosion

resistance, a low

coeﬃcient of friction,

consistent

tensioning and

subsequent ease of

installation and

removal. A metallic

base coat, as shown

in Figure 1, is

applied first followed

by an adhesion

Marine Hardware: James Standard & James Premium

Page 2

coat. The adhesion coat creates a chemical bond

between the base coat and the top coat. The top coat,

a heat cured ﬂuoropolymer coating containing PTFE, is

used to seal the two under coatings facilitating the

installation of hardware on to marine speaker products.

The result is thin, continuous, protective ﬁlm barriers

which resist chipping, spalling, abrasion, galling,

seizing, and a wide range of corrosive environments.

Previously, hot dip galvanized, cadmium or zinc plated

fasteners were considered the standard. However,

these coatings could not withstand the corrosive

surroundings common in many industries. After 2,000

hours of salt spray testing (ASTM B117), fasteners

coated with these conventional methods showed

severe corrosion illustrated in Figure 2. The fastener

coated with FluoroKote#1 withstood these conditions

with no noticeable deterioration. The fluoropolymer

coating was additionally tested in various acidic-based

solutions, where the test duration and results are

represented in Table 3. After 24 hours, the coating

showed no eﬀects of corrosion. Indicating the coating

speciﬁcations in Figure 3, one of the beneﬁts of this

coating presents a low coeﬃcient of friction of 0.06–

0.08, which ultimately decreases torque requirements

and signiﬁcantly reduces thread galling and seizing

problems during installation and assembly.

Additionally, our fasteners receive the highest quality

control where they are checked for cure, thickness,

adhesion, and overall coverage. In recognition of these

eﬀorts, our coating applicator earned the ISO 9001

certiﬁcation for the application of industrial coatings.

Combined with advanced computer controlled,

automated equipment keeps the coating thickness

precise and extremely uniform.

Upon application of marine hardware onto our

marine speaker products, we additionally utilize Tef-

Gel. Tef-Gel is specifically designed for the marine

environment and serves as a lubricant and essentially

eliminates electrolytes, e.g. seawater, from entering the

interface of metallic surfaces as in Figure 4. The

lubricant contains 40% PTFE powder and 0% volatile

solvents. No silicones or petroleum solvents are used

which can evaporate and would leave voids for

electrolytes to be drawn into creating a galvanic cell.

Although our fasteners are ﬂuoropolymer coated,

additional application of Tef-Gel ensures prevention of

dissimilar metal corrosion if bare metal to metal contact

exists.

To prevent contamination by steel particles on

to fasteners via tool bit contact, our marine products

are assembled utilizing Titanium Nitride tool bits. Our

titanium nitride tools provide high surface hardness to

help penetrate tough materials, signiﬁcantly reduces

friction between bit and work-piece, and most

importantly ensures no contamination of steel particles

when installing our fasteners.

By understanding the causes and types of

corrosion experienced in marine environments, we

have been able to design and select hardware to

endure harsh conditions throughout its service life.

Produkt Specifikationer

Mærke:	James
Kategori:	Højttaler
Model:	C-Omni Cube
Bredde:	398.78 mm
Højde:	508 mm
Udgangseffekt (RMS):	250 W
Husmateriale:	Aluminium
Anbefalet brug:	Universel
Frekvensområde:	33 - 20000 Hz
Impedens:	4 ohm (Ω)
Diskanthøjttaler:	Ja
Antal drivere til diskant:	4
Sensitivitet:	89 dB
Diskant diameter:	19 mm
Bashøjttaler:	Ja
Antal bashøjttalerdrev:	1
Woofer diameter:	203 mm