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 best quality
marine or other high grade plywood.
Particle board and MDF enclosures can
be easily damaged and are not
recommended for portable applications,
but may be acceptable for permanent
installations. If construction plywood must
be used, inspect each sheet thoroughly
and use at least BC grade.
Use a quality wood glue, fit joints tightly
and add internal bracing to stiffen the
panels of the enclosure. Look at
commercially designed enclosures for
ideas on good brace placement. Use
wood screws or a pneumatic nailer to
assemble the enclosure during gluing to
maximize joint strength.
The strength of the completed enclosure
has a great effect on the bass
performance of the finished system. Box
panels that aren’t stiff enough will vibrate,
canceling bass produced by the woofer
and creating undesired sounds of their
own. If your box vibrates or you don’t
think the box panels are stiff enough, add
more bracing.
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, horn (if used) and
woofer or your enclosure before building
it, or it will be smaller than its intended
volume. This can reduce bass output and
mis-tune 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.
When building a bandpass enclosure,
design a panel or door to be removable
for access to the woofer. Use foam
weatherstrip to seal the panel along with
enough screws and bracing to prevent
leaks and buzzes. Fill the sealed volume
loosely with polyester fiber, but leave the
vented volume empty. Place the magnet
of the woofer in the vented side for
improved cooling.
Peavey does not supply hardware
required for the manufacturing of flying
systems, and 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 construction or use of
enclosures using this information.
Due to Peavey’s continuing efforts to
improve its products, features and
specifications are subject to change
without notice.
PARAMETERS
Thiele-Small parameters for Pro Rider
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
2
.
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.
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
1508-8 alcp
1508-8 cucp
Part #
00452850
00452860
Size: inches / mm
15" / 380 mm nomial
15" / 380 mm nominal
Frame OD
Frame OD
15-1/4: / 387 mm
15- 1/4: / 387 mm
Bolt circle
Bolt circle
14-9/16" / 370 mm, 8 holes
14-9/16" / 370 mm, 8 holes
Cutout diameter
Cutout diameter
14" / 356 mm
14" / 356 mm
Depth Depth
5-1/4" / 133 mm
5-1/4" / 133 mm
Impedance:
8 Ohms
8 Ohms
Power Capacity:
2,400 Watts peak
2,400 Watts peak
1,200 Watts program
1,200 Watts program
600 W continuous per AES 2-1984,
600 W continuous per AES 2-1984,
50 Hz – 500 Hz
50 Hz – 500 Hz
Sensitivity:
96.3 dB / 1 Watt, 1 Meter
97.5 dB / 1 Watt, 1 Meter
Usable frequency range:
35 Hz ~ 2 kHz
35 Hz ~ 2 kHz
Cone:
Kevlar impregnated cellulose
Kevlar impregnated cellulose
Voice coil dia:
4.0" / 100 mm
4.0" / 100 mm
Voice coil material:
Polyimide-impregnated fiberglass former
Polyimide-impregnated fiberglass former
Nomex
®
stiffener
Nomex
®
stiffener
Edge wound aluminum
Edge wound copper
ribbon wire
ribbon wire
Net weight:
17 lbs. / 7.7 kg
17 lb. / 7.7 kg
Znom(Ohms)
8
8
Revc (Ohms)
5.8
5.7
Sd (M
2
)
0.084
0.084
BL (T/M)
16.5
22.7
Vas (liters)
188.2
208.0
Fo, (Hz)
40.4
34.8
Cms (uM/N
187.8
207.6
Mms (gm)
82.5
100.5
Qms
8.726
8.782
Qes
0.450
0.241
Qts
0.428
0.235
Le (mH)
0.41
0.50
SPL (1 WATT 1 M)
96.3
97.5
No (%)
2.7
3.5
Vd (milliliters)
773
773
Pmax (Watts pgm.)
1,200
1,200
Disp (inches
3
) / milliliters
209 / 3426
209 / 3426
1 0 F r e q u e n c y , H z
5 0 1 0 0 Hz 5 0 0 1 K
S P L , d B
1 0 0
9 5
9 0
8 5
8 0
7 5
7 0
6 5
6 0
P r o R i d e r 1 5 c u c p : S m a l l v e n t e d 1 . 5 c f F b 5 3
P r o R i d e r 1 5 c u c p : M e d i u m v e n t e d 2 . 2 5 c f F b 5 1
P r o R i d e r 1 5 c u c p : L a r g e v e n t e d 3 . 0 c f F b 4 9
1 0 F r e q u e n c y , H z
5 0 1 0 0 Hz 5 0 0 1 K
S P L , d B
1 0 0
9 5
9 0
8 5
8 0
7 5
7 0
6 5
6 0
P r o R i d e r 1 5 a l c p : S m a l l v e n t e d 3 . 0 c f F b 4 5
P r o R i d e r 1 5 a l c p : M e d i u m v e n t e d 4 . 0 c f F b 4 3
P r o R i d e r 1 5 a l c p : L a r g e v e n t e d 5 . 0 c f F b 4 0
P r o R i d e r 1 5 a l c p : S i n g l e r e f l e x b a n d p a s s 4 . 0 c f
