Peavey BWX 1008 Specifications

80305089

Suggested enclosures

For those who want to build their own enclosures, but don ’t want to go through the design process using driver
parameters, we provide the following optimized designs:

ENCLOSURES Net Volume Vent diameter Vent length V

cubic feet/liters (qty) inches/mm inches/mm frequency in Hz point in Hz

1008-8sps BWX

Sealed box 0.30 / 8.5 n/a n/a 107 (resonance) 111

Small vented box 0.40 / 11.3 (2) 2" / 51 5-7/8" / 149 72 75

Medium vented box 0.65 / 18.4 (3) 2" / 51 5-7/8" / 149 69 62

Large vented box 0.90 / 25.5 (2) 3" / 76 7-3/8" / 187 63 57

1008-8he BWX

Small vented box 0.30 / 8.5 (2) 2" / 51 5-1/2" / 138 85 90

Medium vented box 0.45 / 12.7 (2) 2" / 51 3-3/4" / 95 80 76

Large vented box 0.60 / 17 (2) 2" / 51 2-7/8" / 73 75 69

FOR 1008-8sps BWX:

1. Small sealed enclosure

Tiny box that works great as a small monitor or mid section of a multi-way PA system.

2. Small vented enclosure

Very small enclosure with bass extension suitable for voice range and music with limited bass
content.

3. Medium vented enclosure

Compact enclosure suitable for general purpose PA use.

4. Large vented enclosure

Amazing performance from less than 1 cubic foot. Bass levels usable for general MI/ PA applications.

FOR 1008-8he BWX:

1. Small vented enclosure

Very small enclosure with super efficiency – works well with a subwoofer.

2. Medium vented enclosure

Small system with high efficiency, good voice range and limited bass response – great with a sub.

3. Large vented enclosure

Usable bass performance and high efficiency from a compact enclosure – also excellent with a
subwoofer.

Kapton®is a registered trademark of DuPont.

®

is a registered trademark of DuPont.

Kevlar

®

is a registered trademark of DuPont.

Nomex

®

Rubatex

is a registered trademark of Rubatex Corporation.

box tuning F3, -3 dB

b

REPLACEMENT OF SPEAKER BASKET ASSEMBLY

1. Prior to replacement procedure, clean work area of all metal objects and other debris.

2. With speaker lying face down, remove the three screws on back of magnet structure with 7/16"

nut driver.

3.. After screws are removed, lift the magnet structure off the basket frame.

4. Clean the voice coil “gap” before magnet structure is put on new replacement basket. (See

illustration.) Fold a piece of masking tape over on itself several times, sticky side out, and insert it
into the voice coil “gap.” Run it all the way around the “gap” several times to remove all particles of
metal and other trash before magnet structure is put on new replacement basket.

5. Holding magnet structure in slanted position, gently lower the structure down into the basket so
that it rests inside the magnet structure counter bore, being sure to align the screw holes, and
lower the structure down into place. Insert screws and tighten.

STEP 1

STEP 3

STEP 2

STEP 4

ONE YEAR LIMITED WARRANTY

NOTE: For details, refer to the warranty statement. Copies of this

statement may be obtained by contacting Peavey Electronics

Corporation, P.O. Box 2989, Meridian, MS 39335

Features and specifications subject to change without notice.

Peavey Electronics Corporation • 711 A Street • Meridian • MS • 39301

[phone] • FAX [phone] • www.peavey.com

©2003 Printed in the U.S.A. 7/03

PEAVEY ELECTRONICS

SPECS

00496600 1008-8 sps BWX
00496610 1008-8he BWX

INTRODUCTION

The 10" BWX drivers give new meaning
to words like “compact” and “high
performance”. With an enormous 4" voice
coil, massive magnet structure and
incredible 1,000 Watt program power
capacity, these two small but powerful
loudspeakers represent a tremendous
leap forward in small driver performance.

The series includes two 10" models, in
8 Ohm impedance.

DESIGN

The 10" BWX cone is a variation on the
existing Kevlar-impregnated cones used
on all Black Widows. It is tough, highly
water resistant, and has a specially
designed “M” style surround that
improves midrange clarity and cone
motion control. The dustcap is also made
of the same extremely strong material.

The speaker frame is made of cast
aluminum, powder coated and precision
machined. Its high strength supports the
massive magnet assembly and maintains
perfect coil alignment.

Voice coil assemblies on the new drivers
use thermoset-insulated aluminum ribbon
wire, bonded onto an incredibly durable,
heat resistant polyimide composite
former. The coil wires are solderless
diffusion welded to high-conductivity
OFHC copper foil leads, which are
embedded inside the former assembly
and soldered to the tinsel leads with high
temperature silver solder. The solder joint
is then coated with a special thermally­conductive silicone adhesive for
encapsulation and heat dissipation.

The voice coil assembly is bonded to the
Kevlar cone and new super-tough nylon
composite spider using a thermoset
epoxy originally developed for attaching
nose cones on ICBM missiles –truly an
aerospace-grade adhesive. The spider
and surround are bonded to the frame
with a high strength toughened-

cyanoacrylate adhesive, which is also
used to bond the dustcap to the cone.

The magnet structure includes subtle
changes to its geometry that improve
power handling. While it appears the
same as the standard structure, and
replacement baskets from the ’08 series
will fit on standard BW magnet structures,
the improved power handling will be
compromised if the standard structure is
used.

These new drivers also adhere to the
familiar features of Black Widow
products: Cast aluminum frames,
replaceable basket assemblies, Rubatex
gaskets and high reliability spring-loaded
terminals are all used.

APPLICATIONS

The 10" BWX drivers are superior
choices for musical instrument and sound
reinforcement applications. Enclosure
volume requirement is minimal, allowing
for extremely small designs. The 1008­8sps BWX is suitable for sealed and
vented systems, while the 1008-8he BWX
works in vented or horn loaded systems.
These remarkable 10" BWX drivers excel
in a variety of applications including
monitors, sound reinforcement, bass
guitar/keyboard enclosures, and high-

level playback. Due to their design and
construction complexity, horn loaded
systems will not be discussed.

Because of their small size, strong deep
bass performance should not be
expected. This is a necessary
compromise, considering the design
intent of these special drivers. However,
output capabilities in the midbass and
midrange are extraordinarily high.

The sps version is preferred if the driver
will be required to reproduce bass. It has
better enclosure tuning and bass output
capabilities for full range operation. In
designs that will high-pass the 10" driver
and use a subwoofer for bass signals or
for horn applications, the he version is the
better choice.

ENCLOSURES

To assist with the growing interest in
home-built enclosure designs, Peavey
provides complete parameter data on
these drivers as well as several
recommended enclosures for each
model. This information and much more
can be found at www.peavey.com.

Enclosures should be built of 3/4" best­quality marine or other high grade
plywood. If construction plywood must be
used, inspect each sheet thoroughly and
use at least BC grade. Particle board and
MDF may also be used, but will add
weight and may be less durable and
sensitive to moisture. Use 3/4" material
even though the enclosures will be very
small - the extraordinary power and SPL
capabilities of the 10" BWX driver will
require high enclosure stiffness. In most
cases the 3/4" enclosure walls will
provide enough panel stiffness that
additional bracing will not be necessary.

Assemble the enclosure with a quality
wood glue and fit joints tightly. Use wood
screws or a pneumatic nailer to assemble
the enclosure during gluing, to maximize
joint strength.

Vents used in the examples require
standard Schedule 40 PVC pipe for vent
construction. The pipe should be dadoed
tightly into the back of the baffle and
glued firmly in place with high quality
epoxy or high strength industrial grade
hot glue. Rough up the outside of the
pipe to improve the glue bond.

Be sure to account for the displacement
of the vent, bracing, HF horn (if used)
and woofer or your enclosure before
building it, or the enclosure will be
smaller than its intended volume. This
can reduce bass output and mis-tune the
enclosure. Due to the small size of the
enclosure, some additional planning may
be required to fit the vent tube and/or
horn into the enclosure.

Line the inside of the enclosure with
polyester fiber batting such as quilt
stuffing. The batting material should
conform to California bedding fire codes.
Attach the batting with spray adhesive or
staples, and keep it away from the end of
the vent tube where it could be pulled in
by air flow. Handles, protective corners,

cabinet covering, grille materials and
crossovers are available through Peavey
Accessories.

Peavey does not supply hardware
required for the manufacturing of flying
systems, and strongly recommends that
builders should not suspend or fly any
enclosure not certified for such
applications.

These instructions are a general
guideline for design. Proper construction
techniques, good planning and common
sense will result in a reliable, high quality,
high performance system.

Peavey in no way accepts liability for any
damage, accidents or injury that may
result from design, construction or
operation of enclosures using this
information.

Due to Peavey’s continuing efforts to
improve products, features and
specifications are subject to change
without notice.

PARAMETERS

Thiele-Small parameters for BWX drivers
follow. This data is for use in designing
enclosures. Numerous software
packages are available that use this data
to simulate the response of the driver and
enclosure together for optimum
performance in any application.

PARAMETER DEFINITIONS

Znom: The nominal impedance of the

driver in ohms.

Revc: DC resistance of the driver in
ohms Also known as Re.

Sd: The functional radiating surface
area of the cone assembly, in meters

BL: Efficiency of the voice coil and
magnet system in Telsa Meters.

Fo: Also known as Fs, the free air
resonance of the driver.

Vas: Volume of air having the same
compliance (springiness) as the driver’s
suspension.

2

.

Cms: Restorative force of the driver’s
suspension in micrometers/Newton.

Mms: The total mass of the moving
parts of the loudspeaker, including the air
load, in grams.

Qms: Resonance characteristics of the
mechanical factors of the loudspeaker.

Qes: Resonance characteristics of
electrical factors of the loudspeaker.

Qts: Resonance characteristics of the
electrical and mechanical factors
combined together.

Xmax: Distance the cone can move in
one direction before the coil begins to
leave the magnetic gap.

Le: Inductance of the voice coil in
millihenries.

SPL: Typical sound pressure level at
1 Watt, 1 meter.

no: Electrical-to-acoustical
conversion efficiency in percent

Vd: Air displacement of the driver
from negative Xmax to positive Xmax, in
milliliters.

Pmax: Maximum continuous program
power in watts.

Disp: Volume displaced by the driver
inside the cabinet when mounted on its
rear flange, in inches

3

.

SPECIFICATIONS 1008-8sps BWX 1008-8he BWX

Part # 00496600 00496610

Size: inches / mm 10" / 250mm nominal 10" / 250mm nominal

Frame OD Frame OD

10-1/4" / 260mm 10-1/4" / 260mm

Bolt circle Bolt circle

9-5/8" / 244mm, 8 holes 9-5/8" / 244mm, 8 holes

Cutout diameter Cutout diameter

9-1/16" / 230mm 9-1/16" / 230mm

Depth Depth

3-7/16" / 87mm 3-7/16" / 87mm

Impedance: 8 Ohms 8 Ohms

Power Capacity: 2,000 Watts peak 2,000 Watts peak

1,000 Watts program 1,000 Watts program

500 Watts continuous per AES 2-1984, 500 Watt continuous per AES 2-1984,

65Hz – 6,500Hz 65Hz – 6,500Hz

Sensitivity: 94.5 dB / 1 Watt, 1 Meter 95.9 dB / 1 Watt, 1 Meter

Usable frequency range: 50 Hz ~ 4 kHz 60 Hz ~ 4 kHz

Cone: Kevlar impregnated cellulose Kevlar impregnated cellulose

Voice coil dia: 4.0" / 100 mm 4.0" / 100 mm

Voice coil material: Aluminum ribbon wire Aluminum ribbon wire

Polyimide-impregnated fiberglass former Polyimide-impregnated fiberglass former

®

stiffener Nomex®stiffener

Nomex

Solderless diffusion welded Solderless diffusion welded

OFHC copper leads OFHC copper leads

Net weight: 14.7 lbs. / 6.7 kg 14.7 lb. / 6.7 kg

Z

(Ohms) 8 8

nom

R

(Ohms) 5.48 5.28

evc

Sd(M2) 0.0335 0.0335

BL (T/M) 15.59 16.18

Vas(liters) 26.0 26.0

Fo,(Hz) 59.3 62.0

Cms(uM/N 163.7 163.9

Mms(gm) 44.0 40.2

Q

ms

Q

es

Q

ts

X

max

8.163 7.412

0.369 0.316

0.353 0.303

4.6 2.2

Le(mH) 0.44 0.37

SPL (1 WATT 1 M) 94.5 95.9

No(%) 1.4 1.9

Vd(milliliters) 308 127

P

(Watts pgm.) 1,000 1,000

max

3

Disp (inches

) / milliliters 143.1 / 2345 143.1 / 2345

1008-8he small vented box
1008-8he medium vented box

SPL, dB

100

95

90

85

80

75

70

65

60

Frequency

20 50 100 Hz 200 500 1K 2K

SPL, dB

100

95

90

85

80

75

70

65

60

20 Frequency 50 100 Hz 200 500 1K 2K

1008-8he large vented box

1008-8sps sealed box
1008-8sps small vented box
1008-8sps medium vented box
1008-8sps large vented box

SealedVented