Crest Audio CPL 8+ User manual

www.crestaudio.com
Passive 2-way
Loudspeaker System
Operating
Manual
CPL™ 8+

Dealer Name:
Serial Number:
Date of Purchase:
Model Number or Name:

1
Features
• Compact passive two-way loudspeaker
• Premium 8” woofer, 2“ voice coil
• 1” Compression driver, 1.3“ voice coil
• Continuous power handling: 200 Watts
• Nominal impedance: 8 Ohms
• Coverage pattern (HxV): 60° x 60°
• Connectors: 2 x 4-pin twist-lock & 4-pin Euroblock
• 2+/2- Loop rough
• Advanced crossover network
• Tweeter protection
• 15 mm Plywood construction
• Textured polyurea paint
• 9 x M8 suspension points (2 top, 2 bottom, 2 each side, 1 rear)
• 4 x M6 suspension points for Peavey® Versamount™ 35
• Available in Black and White
e Crest Audio CPL 8+is a compact passive two-way loudspeaker designed for music playback, public address
and live performance reinforcement applications where space is at a premium.
e CPL 8+can be utilized for both permanent installations and portable live sound applications. Perfect for
public address, monitoring and background audio reinforcement purposes typically required in houses of
worship, clubs, bars/restaurants, retail outlets plus education and corporate meeting facilities or anywhere high
quality discrete audio distribution is required.
e CPL 8+is equipped with a premium 8 inch woofer having a 2 inch voice coil together with a 1 inch exit
compression driver known for its smooth frequency response and non-fatiguing mid range. Directivity pattern of
the loudspeaker is measured at 60° horizontal and 60° vertical providing a wide yet well controlled audio coverage.
An internal advanced crossover network maintains EQ and driver protection. Impedance of the loudspeaker is 8
Ohms allowing for easy daisy chaining. Connectivity is made via either looping 4-pin twist-lock or 4-pin
Euroblock connectors.
e CPL 8+enclosure is built from prime-grade 15 mm plywood that oers sturdy mechanical and low resonant
electro-acoustic characteristics together with a heavy-duty steel grille backed with acoustic foam to ensure
maximum protection of the internal components. e loudspeaker is equipped with a total of 13 threaded
suspension points oering multiple mounting options for various applications. Available in durable black and
white nish.
Crest Audio® CPL™ 8+
DESCRIPTION EN

2
Conguration: Compact 2-way passive speaker
Power Handling*: 200 Watts Continuous, 400 Watts Program, 800 Watts Peak
*To reach the rated power, there must be an infrasonic lter set to 65 Hz, 12 dB / Octave Butterworth minimum ltering. If the CPL 8+is used with a crossover for a
Subwoofer, then the high pass section needs to meet this criteria at a minimum. A higher frequency and/or lter slope is acceptable.
Nominal Impedance: 8 Ohms
Sensitivity (1W/1m): 95 dB
Maximum SPL (1m): 118 dB @ 200 Watts; 124 dB @ 800 Watts Peak
Frequency Response*: 131 Hz - 20 kHz, ±3 dB
*1m on-axis, swept-sine in anechoic environment
Frequency Range*: 67 Hz - 20 kHz, -10 dB
*1m on-axis, swept-sine in anechoic environment
Box Tuning Frequency: 65 Hz
Nominal Coverage Pattern (-6 dB): 60° H x 60° V
LF Driver: 1 x 8" (200 mm) Woofer - Crest Audio CPL850B
LF Driver Voice Coil: 2" (50 mm)
HF Driver: 1 x 1" (25.4 mm) Compression Driver - Crest Audio CQ3402
HF Driver Voice Coil: 1.3" (34 mm)
Input Connections: 2 x 4-pin twist-lock (NL-4 style) & 1 x 4-pin Euroblock
Input, Pin 1+ = (+) positive; Pin 1- = (-) negative / Loop rough, Pin 2+ = (+) positive; Pin 2- = (-) negative
Enclosure Material: 0.6" (15 mm) Plywood
Finish: Textured polyurea paint, available in Black & White
Black Finish: RAL: 9004 Signal Black (Pantone: Black 6)
White Finish: RAL: 9003 Signal White (Pantone: 705)
Front: Full-coverage perforated steel grille, backed with acoustically neutral foam
Mounting Provisions: Nine (9) M8 suspension points (2 top, 2 bottom, 2 le, 2 right, and 1 rear) and additional
set of four (4) M6 mounting points rear for optional Peavey Versamount 35
Overall Dimensions (HWD):
Front - 16.54" x 10.59" x 10.83" (420 x 269 x 275 mm)
Rear - 16.54" x 7.28" x 10.83" (420 x 185 x 275 mm)
Net Weight: 24.6 lbs (11.2 kg)
EN SPECIFICATIONS

3
Before attempting to suspend this speaker, consult with a certified structural engineer. Speaker can fall from
improper suspension, resulting in serious injury and property damage. Do not suspend or mount any other
product or device from this enclosure! Use only the correct mating hardware. All associated rigging is the
responsibility of others. Maximum enclosure angle 30 degrees.
Whenever possible, in addition to the nominal primary mounting method, use a suitable safety chain or wire rope
attached to one of the other groups of fly point inserts, and firmly attached to a suitable structural member as
indicated by a certified structural engineer.
We recommend the use of thread-locker at the insert point bolts, so the bolts cannot vibrate loose. Never
transport the cabinet using the array bracket or other mounting brackets as a structural member, while the cabinet
is mounted on an array bracket or other mounting bracket and unsupported otherwise, as this may unduly stress
the mounting inserts.
This Crest Audio loudspeaker should be suspended overhead only in accordance with the procedures and
limitations specified in the User's Manual and possible manual update notices. This system should be suspended
with certified rigging hardware by an authorized rigging professional and in compliance with local, provincial or
national suspension ordinances.
CAUTION
WARNING
The CPL 8+passive 2-way loudspeaker system is very efficient and powerful! This sound system can permanently
damage hearing! Use extreme care setting the overall maximum loudness!
The apparent sound level of the CPL 8+can be deceiving due to its clear, clean sound output. The lack of
distortion or obvious distress can make the sound level seem much lower than it actually is. This system is capable
of sound pressure levels (SPL) in excess of 124 dB at 1 meter from the speaker!
INSTALLATION
A total of nine (9) M8 1.25 mm per thread threaded mounting suspension points (2 top, 2 bottom, 2 left, 2 right,
and 1 rear) are provided. These are plugged with a hex key beveled head bolts.
The nine mounting suspension points are for use with forged shoulder machinery eyebolts and should be an M8
size, 1.25 mm per thread, and must conform to at least DIN 580 or ASTM A489, or whatever local, provincial or
national suspension ordinances or regulations may additionally require. Eyebolts must be used at a minimum as
a pair, never use just one eyebolt to hang the speaker overhead.
An additional set of four (4) M6 threaded mounting suspension points are provided at the rear center of the
cabinet for the optional Peavey Versamount 35 ceiling or wall-mount bracket.
EN
SAFETY

4
EN RIGGING & MOUNTING
Installation methods for optional mounting accessories
Installation Method 1 - U-Bracket
Installation Method 2 - Versamount 35
Installation Method 3 - Pole Mount Adapter
M8 knob-headed bolt
Lockwasher
Bolt hole
Threaded
angle set hole
Pole Mount Adapter
Pole tightening knob
Lockwasher
Top vie w
Versamount 35
Lockwasher
M8 knob-headed bolt
M8 knob-headed bolt
4 x Screw
4 x Lockwasher
Insert for safety chain or
wire rope
Note: U-Bracket, Peavey Versamount 35, and Pole Mount Adapter are not included. These are optional accessories and need to be ordered separately.
M8 knob-headed bolt
Stand Pole
Thread into center
insert of cabinet plate
Note: This CPL+model can also be used with the
Versamount 70 ceiling or wall-mount bracket. Both
mounting plates on the Versamount 70 include a
hole pattern that matches the Versamount 35
mounting hole spacing. The use of the Versamount
70 can be helpful when the Versamount 35 does not
have enough adjustment range to angle or aim the
cabinet as desired.

5
EN
RIGGING & MOUNTING
Group A
A set of two M8 inserts on the top, designed to hang the cabinet using the proper eyebolts. The rearmost insert
can be used as a pull-back point OR an additional fly point. The count does not include the center insert for the
U-Bracket, which is an M8.
Group B
A set of two M8 inserts on the bottom, designed to hang the cabinet using the proper eyebolts. The rearmost insert
can be used as a pull-back point OR an additional fly point. The count does not include the center insert for the
U-Bracket, which is an M8.
Group C
A set of two M8 inserts on either side, designed to hang the cabinet using the proper eyebolts.
Group D
The M8 insert at the very bottom of the rear of the cabinet is for use as a pull-back or with a safety chain when
using the other Groups A, B, and C, using the proper eyebolts.
Group E
A set of four M6 inserts on the rear, designed to be used with the Peavey Versamount 35 mounting ceiling and
wall-mount bracket. These are spaced apart side-to-side on the centers by 76 mm, and apart 108 mm
top-to-bottom on the centers, and the group of four is located centered on the rear side-to-side, and just below the
handle.
Group F
The M8 inserts at the center of the U-Bracket mounting plates on the top and bottom, normally used for the
U-Bracket retention, but can be used for safety chain/wire rope if necessary, or as an additional eyebolt fly point.
For Group A, B, and C, always use the inserts at a minimum as a pair; NEVER use just one insert to fly a cabinet!
Group D can use just one for pull-back, or for safety wire/chain attachment, as long as there are two other eyebolts
on a given cabinet wall used for primary suspension points.
For Group E, always use all four inserts of a given group as a set; NEVER use just one insert to fly a cabinet! The
four insert groupings are meant to have all four inserts used at once within group E.
For Group F, always use both inserts with the appropriate hardware to mount a model specific Crest Audio
U-Bracket. These inserts can also be used, if necessary, as safety points for a chain or rope attachment point when
other mounting methods are being used.
Grouping of insert sets for CPL 8+

6
EN RIGGING & MOUNTING
Group A, B, C, and Group D should use an M8 forged steel shoulder-type lifting eyebolt, which meets the
requirements of DIN 580 or ASTM A489, or whatever local, provincial or national suspension ordinances or
regulations may additionally require. They should at a minimum be used in pairs for the primary suspension
points, and in conjunction with a pull-back/aiming adjustment point insert, using M8 eyebolts of a similar
specification. The length of the threaded shank on the eyebolts should not exceed 20 mm (approximately 3/4”), so
that it does not engage the interior of the cabinet's sound absorbing lining. Thread pitch: 1.25 mm per thread.
Group E should use an M6, grade 8.8 or better, 1.0 mm per thread, metric bolt, that does not penetrate the cabinet
past the cabinet surface more than 20 mm (approximately 3/4”). When using a Peavey Versamount 35 mounting
bracket and lockwasher, the length of the bolt should not exceed 30 mm (approximately 1.125”).
Group F should use the supplied knob-head bolts, OR an M8, grade 8.8 or better, 1.25 mm per thread, metric bolt,
that does not penetrate the cabinet past the cabinet surface more than 20 mm (approximately 3/4”).
Mounting Method 1 - U-Bracket
Use the large handled knob-headed bolts to mate the U-Bracket to the cabinet, placing lockwashers between the
bracket and bolt. See diagram above. Determine the angle that the cabinet needs to be relative to the U-Bracket,
and position the cabinet to that angle, and screw-in a small handle knob-headed bolt through the threaded
angle-set hole in the bracket into one of the 24 angle location holes on the cabinet. Use the hole nearest the angle
desired.
For permanent installation, the large handled knob-headed bolts can be substituted for with hex head bolts by
using the specifications above (Group F). It is then recommended that thread-locker be used. Using hex head
bolts with thread locker will remove the possibility for someone to attempt to unscrew the knob-headed bolts by
hand to vandalize or otherwise alter the cabinets mounting.
If using the U-Bracket with the cabinet pointing straight out (bracket rear parallel to the rear of the cabinet), then
use of the NL-4 twist-lock connection is best made before locking the angle into place and using thread-locker.
Offset the cabinet till the NL-4 jack clears the bracket, and plug it up, then rotate the cabinet into the final position,
etc.
Mounting Method 2 - Peavey Versamount 35
Instructions for use are included with the Peavey Versamount 35, and for permanent installation, once the angles
have been finalized, use thread locker on the four mounting bolts with lockwashers. The bolts for this method are
Group E.
Mounting Method 3 - Pole Mount Adapter
This adapter allows use of the cabinet with a speaker stand (also referred to as a tripod stand) for temporary
portable use. It is designed for use with a standard 1 3/8” (35 mm) diameter stand pole. This adapter is only
provided for use with the stand pole that is aligned basically straight up, no tilt should be present, or this could
cause an unsafe situation.
Specifications for insert mating hardware
Notes on specific mounting methods using optional accessories

7
EN
RIGGING & MOUNTING
Install the adapter by threading it into the center insert of the mounting plate on the bottom of the CPL+cabinet.
At some point, the adapter will no longer screw in any further. Then, find the nearest threaded hole on the adapter
mounting plate that line's up with one of the 24 holes on the cabinet mounting plate (it may be necessary to back
off the adapter slightly to line the holes up), and screw in one of the knob-headed bolts supplied with the adapter.
Two of the knob-headed bolts are provided, but only one needs to be screwed into position for the best fit of the
adapter, the other is provided as a spare.
Loosen the pole tightening knob till the threads clear the inside of the pole tunnel of the adapter, and place the
cabinet onto the stand pole, then tighten the pole tightening knob firmly once the speaker is aimed horizontally
as desired.
DO NOT TILT THE STAND/POLE TO TRY AND AIM THE CABINET VERTICALLY, THIS TYPE OF USE OF
THE STAND POLE ADAPTER MOUNT IS NOT ALLOWED!
When using stands or poles, be sure to follow these precautions:
Check the stand or pole specs to make sure that it can support the weight of the CPL+model, and observe all
safety precautions stated by the stand manufacturer, including the maximum height and/or weight the stand is
rated for.
Always place the stand on a flat, level and stable surface, and be sure to fully extend the stand legs as per the stand
manufacturer's instructions.
Try to make sure that the stand legs are oriented for the least danger of tripping to those in the vicinity of the
stand. Never block a doorway or hallway with the legs of a stand.
Try to route cables so that people will not trip over them, or tip the speaker over. Use of duct tape, cable channels
or guards, or other appropriate tie-down/cover–up devices should be carefully considered and implemented.
When installing or de-installing the speaker on the stand, it is a good practice to have a helper if possible. It can
be hard to “thread the needle” and mate the stand cup to the stand pole while holding the CPL+speaker system
at arm's length. It is also helpful if someone holds the speaker stand and pole down while the CPL+speaker system
is removed from the stand pole, this prevents the CPL+speaker from pulling the pole up with it.
When using stands outdoors, never attach banners or flags to the stands or the CPL+speaker system, strong
winds may cause the speaker to blow over. If there is a possibility of windy conditions, then it may be prudent to
consider weighting or locking down the stand legs to prevent the CPL+speaker system from being blown over.
Use of the CPL+Pole Mount Adapter with a subwoofer and associated pole:
Always be sure to place the subwoofer used in this manner on a flat, level and stable surface. Follow the
manufacturer's instructions regarding how high the pole can be for a given size and weight of cabinet on top.
Many of the precautions mentioned above for speaker stands will also apply to this type of use.

8
4-conductor cable 2-
4-conductor cable 2+
4-conductor cable 1-
4-conductor cable 1+
Poweramp
Combination Output
Channel B
Channel A
Poweramp
Channel B
1+
1-
2+
2-
1+
1-
2+
2-
1+
1-
2+
2-
Poweramp
Channel B
Poweramp
Channel A
1+
1-
2+
2-
1+
1-
2+
1+
1-
2+
2-
Poweramp
Channel A
2-
Speaker #1Speaker #2
Speaker n#Speaker #2
Signal Changer Adapter Cable
2+ -> 1+
2- -> 1-
1+1-
2-2+
1+
1-
2+
2-
1+
1-
2+
2-
Input Cup
4-pin twist-lock
IN / THRU
LOOP THRU
1+
1-
2-
2+
4-pin twist-lock
IN / THRU
LOOP THRU
1+
1-
2-
2+
IN / THRU
LOOP THRU
1+
1-
2-
2+
4-pin Euroblock
X-Over & Speakers
1+
1-
X-Over
+
-
+
-
HF
LF
1+
1-
2+
2-
Poweramp
Channel B
1+
1-
2+
2-
Poweramp
Channel A
Speaker #1
Speaker n#
Speaker n#: The number of speakers in
parallel must refer to the rated impedance.
It is recommended that the impedance in
parallel is not less than 4.
CPL+Series Input & Loop Through Schematics
CPL+Series Loop rough System Schematics
INPUT & LOOP THROUGH SCHEMATICSEN

Unit: mm
9
DIMENSIONS EN
185
113.5108
420
420
275
258.6
130
13942
198.5
30
269 50.8
100
275
340
198.1
172.6
204.8

10
e compact loudspeaker shall consist of a 8 inch (200 mm) low frequency transducer with 2 inch (50 mm) voice
coil and a 1 inch (25.4 mm) exit compression driver with a 1.3 inch (34 mm) voice coil and a frequency dividing
network installed within the enclosure.
Performance specications of a typical production unit shall be: Measured sensitivity SPL at 1 m (3.3) with
2.83V input, shall be 95 dB-SPL. Usable frequency response shall extend from 67 Hz to 20 kHz (10 dB below rated
sensitivity, in full space, with no external equalization). Nominal impedance shall be 8 Ohms. Rated power
capacity shall be at least 200 Watts continuous power and 800 Watts peak power, dened as 6 dB above a test signal
of ltered random noise.
e system shall be protected against damage from occasional over-powering limiting the power to the network
and transducers. e compression driver shall be capable of even coverage at a nominal 60° horizontal through
60° vertical distributed pattern.
e enclosure shall be constructed from prime-grade 15 mm plywood. e loudspeaker shall be equipped with a
total of thirteen (13) suspension points. e grille shall be of heavy-duty steel backed with acoustically transparent
foam. e external wiring shall be via either two 4-pin twist-lock or one 4-pin Euroblock connectors. e
loudspeaker shall be 16.54 inches (420 mm) high by 10.59 inches (269 mm) wide by 10.83 inches (275 mm) deep
weighing 24.6 pounds (11.2 kg). e nish shall be a paintable lightly textured black or white.
e compact loudspeaker shall be the Crest Audio CPL 8+.
ARCHITECT'S & ENGINEER'S SPECIFICATIONSEN

11
FREQUENCY RESPONSE & IMPEDANCE EN
Frequency Response
Impedance

12
NOTES
EN

©2023-Rev_P1_2023_01_23
Features and specifications subject to change without notice.
Crest Audio 5022 HWY 493 N. Meridian, MS 39305 [phone] FAX [phone]