E08/10/NEOv2 Manual
E08/10/NEOv2 Manual
22.11.2002
17:24 Uhr
Seite 1
WOOFER
SPECIFICATION SHEET
EMPHASER’s NEOv2 woofers are the evolution of the award winning
initial EM-NEO line. The new v2 models have been engineered and
over-built to suit the most demanding applications, where ultimate
durability and highest bass output from a reduced box volume are
required. All the knowledge gained from the first NEO woofers has
been taken into consideration, to create a new v2 line, exceeding the
benchmarks of their ancestors by a wide margin.
NEOv2 WOOFER KEY FEATURES
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CAST ALUMINUM BASKET
NEODYMIUM MAGNET MOTOR
VENTED CAVITY BELOW SPIDER
CELLULOSE-NOMEX™ COMPOSITE CONE
SANTOPRENE™ RUBBER SURROUND
SURROUND STITCHED TO CONE
INVERSE PP-INJECTION DUSTCAP
2” & 2 ¹⁄₂” KAPTON™ VOICE COIL FORMER
2-LAYER WOUND COPPER VOICE COIL
BLACK NOMEX™ DOUBLE SPIDER
CNC MACHINED RETURN STRUCTURE
CIRCLE ARRAY COOLING VENTS
INSULATED TINSEL LEAD WIRES
OVERSIZED SCREW TERMINALS
CAST ALUMINUM BASKET
The cast baskets used for the NEOv2 woofers offer a solid and antiresonant platform for the advanced neodymium motor and all the
other precision aligned parts of this speaker unit. The cavity under the
spider is vented by windows in the basket, considerably improving the
cooling of the voice coil by air exchange. Improved cooling of the coil
helps to reduce power compression at high input power loads and it
also extends the speaker’s life-span. Furthermore, back-venting the
basket prevents pressure from building up under the spider assembly
due to trapped air, and this directly translates to more linear cone
excursion and less noise.
ADVANCED NEODYMIUM MAGNET SYSTEM
A neodymium rare earth magnet drives the NEOv2 woofer models.
Very compact in its physical dimensions, yet highest magnetic flux
density in the air gap. The second generation of the NEOv2 magnet
motor has been optimized to allow higher cone excursion based on
extending the length of the return structure. Due to the advanced FEA
optimized design, the NEOv2 magnet motor is free from fringe fields
and flux modulation of the coil. All this means, the new v2 models
give you even more bass, more power handling and more sound
quality than its NEO predecessors.
CELLULOSE-NOMEX™ CONE
The NEOv2 woofers deploy a Cellulose-Nomex™ cone, a new material formula that impresses with unparalleled stiffness at low weight
and superior internal damping. The new cone material gives you
stronger bass output and lower distortion, as the stiff cone – acting
WARRANTY
EMPHASER Inc. Wyoming, Michigan U.S.A. warrants this NEOv2
woofer to be free of defects in materials and workmanship for two
years from the original date of purchase, contingent upon installation being performed or approved by an authorized EMPHASER dealer. EMPHASER Inc. will at its own discretion repair or replace any
mechanically defective NEOv2 woofer at no charge, during the warranty period. This warranty is limited to the original purchaser. This
warranty is limited in duration to a period of two years, beginning
with the date of the original purchase at retail.
Should your EMPHASER NEOv2 woofer require warranty service,
please return it to the retailer from whom it was purchased.
like a piston in its entire operating range – will flex considerably less
when pushed to the excursion limits.
SANTOPRENE RUBBER SURROUND
A tear resistant, long-throw Santoprene™ half-roll surround yields a
precise alignment of the cone body, and it guarantees totally linear
suspension characteristics. Santoprene™ is the most durable spider
material available today, it is heat, UV and solvent resistant and keeps
its favorable mechanical properties in a very wide temperature range.
SURROUND STITCHED TO CONE
The surround has been stitched to the cone, to take away unnecessary
strain from the adhesive that is holding the surround to the cone. The
stitching process prevents the two parts from separating, a good additional insurance for best longevity of the NEOv2 woofers.
2-LAYER WOUND COPPER VOICE COIL
A 2-layer copper voice coil with impressive winding height can dissipate more heat, than other conventional multilayer coil types. Large
winding heights stand for huge X-max, high thermal power handling
and a fully controlled cone motion.
RED KAPTON™ FORMER
Kapton is ultra durable, heat resistant and also features good internal
damping. Kapton thermally isolates the cone from the coil. The waste
heat of the coil can not creep up the former, preventing thermal degradation of the glue joint that attaches the cone to the former.
Furthermore, Kapton keeps its shape und does not expand or contract
when exposed to rapid temp. changes – and it is a “quiet” material
too, damping the internal vibrations of the coil to a good extent.
BLACK NOMEX™ SPIDER
A black Nomex™ spider keeps the coil of the NEOv2 driver in perfect alignment, and it also guides the cone assembly to its max. cone
excursion. Spiders made of black Nomex™ stand out with highest
durability, most linear damping action and best resistance against
mechanical aging.
CIRCLE ARRAY COOLING VENTS
The magnet return structure features a circle array of vent holes. The
technical function of these vents is to increase the air flow in the return
structure, getting rid of excess heat in direct relation to the power
input fed to the NEOv2 woofer. The stream of air pumped over the
voice does significantly reduce power compression.
INSULATED TINSEL LEAD WIRES
High quality tinsel lead wires support high current flow and the PVC
sleeving helps to counteract breakage and rapid degradation of the
leads when the woofer is punished with high power input loads. The
tinsel lead wires are mechanically suspended, to protect the soldering
points from vibrations. This is the weak spot of most long-throw woofer designs and special care has been taken to guarantee reliability
and longevity of the NEOv2 line.
Please do not send any product to EMPHASER Inc., Wyoming,
Michigan U.S.A. Should you have difficulty in finding an authorized
EMPHASER dealer or service center, details are available from the
national distributor in the country of purchase.
Abuse of this loudspeaker is not covered under warranty.
The warranty does NOT cover:
• Any freight damage
• Woofers damaged due to amp clipping or distortion
• Exposure to water, oil, solvents or excessive heat
• Repair attempts by unauthorized individuals
• Install damage (screwdriver holes)
EMPHASER Inc. Wyoming, Michigan U.S.A
E08/10/NEOv2 Manual
22.11.2002
17:24 Uhr
Seite 2
WOOFER
SPECIFICATION SHEET
TECHNICAL SPECIFICATIONS:
EM08NEOv2
EM10NEOv2
Usable Frequency Response*
Continuous Power Handling*
Peak Power Handling*
Nominal Impedance
Voice Coil Diameter
Voice Coil Winding Height
Front Pole Plate Height
Total Weight of Neo-Magnet
Total Weight
35 - 200 Hz
300 Watts RMS
400 Watts
4 Ohms
2” / 50 mm
25 mm
8 mm
250 g
2.3 kg
30 – 150 Hz
400 Watts RMS
500 Watts
4 Ohms
2 ¹⁄₂” / 63 mm
27 mm
10 mm
600 g
3.7 kg
THIELE - SMALL PARAMETERS
EM08NEOv2
EM10NEOv2
Free-Air Resonance
DC Resistance
Electrical Damping
Mechanical Damping
Total Damping
Equivalent Volume of Compliance
Moving Mass incl. Air Load
Electrically Limited Cone Excursion
Effective Cone Surface
Volume Displacement of Cone
Voice Coil [email protected]
Efficiency (2.00V)
40.6 Hz
3.3 Ohms
0.66
2.9
0.54
18.6 l
62.5 g
8.5 mm
224 cm2
380 cm3
0.43 mH
84.6 dB/1W/1m
31.4 Hz
3.7 Ohms
0.47
3.0
0.41
45.2 l
115.3 g
8.5 mm
353 cm2
600 cm3
0.64 mH
86.5 dB/1W/1m
*Exact performance data depending upon actual enclosure!
(Fs)
(Re)
(Qes)
(Qms)
(Qts)
(Vas)
(Mms)
(Xmax)
(Sd)
(Vd)
(Le)
(RefSPL)
Positive voltage on the red terminals gives forward motion of diaphragm!
MOUNTING DIMENSIONS
EM08NEOv2
EM10NEOv2
Mounting Cutout Diameter
Rear Mounting Clearance (Mounting Depth)
188 mm
111 mm
240 mm
123 mm
ENCLOSURE SUGGESTIONS
Enclosure Construction / Cabinet Damping / Break-In Info
Always use 19mm or thicker MDF to construct the enclosure. Make
sure all joints are well sealed, since the woofer can only reach optimum performance when it is mounted to an airtight cabinet!
EMPHASER Laboratories recommend to use the NEOv2 woofers in
combination with sealed, vented and bandpass enclosures. The
NEOv2 woofers are not suited for free-air applications. To obtain the
best possible performance of the NEOv2 woofer in your car audio
system, make sure to follow the stated basic enclosure suggestions
listed below.
The enclosures should be damped according to their function principle: The sealed enclosure must be filled with approx. 75 to 85% with
polyfill (bonded acrylic fiber). The inner walls of the ported enclosure should be lined out with structured gray PU-foam. The sealed
chamber of the bandpass enclosure has to be filled with polyfill,
while the ported chamber remains free of damping material.
Each box tuning principle will give you good performance, while
each of them has PRO’s and CON’s: The sealed enclosure is your best
choice, if the available space is tight and you are looking for a truly
balanced bass reproduction with good low end extension. Ported
boxes ask for bigger net volumes, but also offer a considerably better overall efficiency and much higher max. dB outputs (higher SPL!).
Bandpass systems stand for medium box volume requirements, excellent low end extension and high SPL, yet the cabinets are more difficult to build. If the provided enclosure suggestions listed below, are
not applicable to your vehicle, contact your authorized EMPHASER
dealer to ask for further assistance.
EM08NEOv2 EM10NEOv2
SEALED ENCLOSURE
Net Volume:
PORTED ENCLOSURE
Net Volume:
Inner Diameter of Port:
Length of Port:
BANDPASS ENCLOSURE
Net Volume Ported Chamber:
Net Volume Sealed Chamber:
Inside Diameter of Ports:
Port Length:
11 l
Loudspeakers using spiders made of Nomex™ material need extra
time to break-in! Out of the box, the NEOv2 woofers are very stiff.
To achieve optimum low bass response, both NEOv2 models will
need approximately two weeks of daily playing. After that period of
time, the suspension system has reached its equilibrium and will
remain stable for the entire life-span of this product. The broken-in
NEOv2 sub will play smoother and exhibit a stronger bass performance, as well as greater bass extension!
SEALED ENCLOSURE
PORTED ENCLOSURE
15 l
BANDPASS ENCLOSURE
A
B
B
26 l
1 x 7 cm
19 cm
35 l
1 x 10 cm
25 cm
E
E
F
B
A
A
F
C
C
11 l
10 l
1 x 7 cm
15 cm
16 l
13 l
1 x 10 cm
23 cm
D
A = Mounting Diameter
B = Mounting Depth
C = Inside Port Diameter
D = Port Length
D
E = Sealed Chamber
F = Ported Chamber
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