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P Series
Application Manual
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RCF P Series, P 2110, P 3115, P 6215 Application Manual

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P SERIES
APPLICATION GUIDE
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APPLICATION GUIDE
P 2110
WEATHERPROOF COAXIAL TWO WAY SPEAKER
P 3115
WEATHERPROOF COAXIAL TWO WAY SPEAKER
P 6215
WEATHERPROOF COAXIAL TWO WAY SPEAKER
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P SERIES
CONTENTS
1 APPLICATION GUIDE INTRODUCTION 4
2 P SERIES GENERAL DESCRIPTION 4
3 INSTALLATION GUIDE 5
3.1 100-Volt Operation 5
3.2 Choosing the right amplifier 5
3.3 Mounting brackets 6
3.4 Aiming of P-SERIES loudspeakers 6
3.5 Conversion to sealed box for outdoor installations 6
3.7 Natural and artificial echoes 7
3.8 Notes on placement 7
4 CLUSTER MOUNTING 8
4.1 Cluster mounting 8
4.2 Setting the angle between loudspeakers 8
4.3 Example of 4 loudspeakers cluster 9
5 SYSTEM OPTIMIZATION 10
5.1 Select the right loudspeaker 10
5.2 Throw distance chart for single speakers 10
5.3 System parameters Cluster P 6215 11
5.4 System parameters Cluster P 3115 12
5.5 System parameters Cluster P 2110 13
6 APPLICATION EXAMPLE 14
6.1 Sport hall field 14
6.2 Football stadium 16
6.3 High School gym 18
7 CLUSTER EQUALIZATION 20
7.1 Equalization list 21
7.2 Equalization parameters for P 6215 22
7.3 Equalization parameters for P 3115 24
7.4 Equalization parameters for P 2110 26
8 ADDITIONAL INFORMATIONS 28
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APPLICATION GUIDE
1 Application Guide Introduction
This application guide shows system design examples using the RCF ACUSTICA P Series Speakers. Typical speaker layouts are shown including single loudspeaker and loudspeaker clusters suited to different kinds of environments and installations. We hope that this application guide may assist you in a correct speaker system design.
2 P SERIES General description
All P Series products are weatherproof, full range, wide-dispersion, coaxial two way loudspeakers offering substantial power and efficiency for a variety of professional indoor and outdoor applications.
P Series loudspeakers systems are part of the ‘RCF INSTALLED SOUND SYSTEMS’ line, designed for fixed installation.
The cabinet is a single piece design, moulded in medium density polyethylene, fully UV protected. The cabinet is equipped with brass inserts, 12 x M 10 on P 3115 and P 6215, 12 x M8 on P 2110 and are provided with a stainless steel U-Bracket and a pair of spacers for 90° mounting. The grille is custom perforated aluminium with open-cell fibres and water repellent woven fabric backing. The front logo is in aluminium and can be rotated.
P Series loudspeakers can be used stand-alone or mounted in clusters of up to 4 cabinets, when higher SPL, longer throw and/or wide coverage are required. Optional mounting accessories are available to install the speakers with different angles between them.
The P Series speakers:
The P Series accessories:
Code Model Description
130 00 125 P 2110 High efficiency wheather-proof speaker system, coaxial 10”+1”, 200 W RMS
130 00 135 P 3115 High efficiency wheather-proof speaker system, coaxial 15”+1”, 300 W RMS
130 00 131 P 6215 High efficiency wheather-proof speaker system, coaxial 15”+2”, 600 W RMS
Code Model Description
133 60 095 AC P10A-BR Cluster brackets for P2110 (including 4 brackets and parts to link 2 speakers)
133 60 094 AC P15A-BR Cluster brackets for P3115/P6215
(including 4 brackets and parts to link 2 speakers)
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3 Installation Guide
Loudspeakers must be installed securely. Make sure that the supporting structure (walls / ceilings) has the necessary mechanical characteristics for the loudspeaker weight, without the risk of a fall that could cause damage or injuries. Use fastening elements suitable for walls / ceilings (e.g. screw anchors for bricks, screw anchors for concrete, etc.). After connecting a P2110 or P3115 loudspeaker, insulate all unused wires!
3.1 100-Volt Operation
The P2110 and P3115 include an internal 100 V transformer (60W and 120W respectively) different power taps can be chosen by connecting different wires: black wire for full power, grey wire for half power. The Brown wire must be connected to the amplifier common output.
For normal low impedance connection, connect the amplifier output “-“ to the brown wire, “+” to the blue wire. It’s good practice to keep speaker lines well separated from mains cables or microphone cables to avoid inductive phenomena that may cause hum or noises.
3.2 Choosing the right amplifier
In constant voltage systems the sum of the nominal power tapping of all the speakers connected in parallel to the same line must not exceed the nominal output power of the amplifier. For example, up to four P3115 or eight P2110 operating at full power (120W and 60W respectively) can be connected to a 480 W power amplifier, such as the RCF model UP 4482, alternately, twice the amount of speakers tapped at half power (grey wire) could be used. In low impedance systems the overall impedance of the speakers connected to the same output (calculated taking into account series/parallel connections) must not be lower than the nominal output impedance of the amplifier. For example 1 P6215 speaker can be connected to each output of an RCF HPS 1500 power amplifier (450watts per speaker), but it’s also possible to connect two in parallel per channel (total impedance 4 Ω), in this case each speaker would have approx. 375watts from the amplifier. In case the amplifier can provide an output power that is higher than the power rating of the speakers (for example if you connect a pair of P6215’s to a HPS 2500) it’s important not to drive the amplifier to the maximum power to avoid distortion or damage to the speakers. It is good practice to ensure all power amplifiers are run within their comfort zone limits avoiding any long term peak led or limiter led operation.
Model Black 100 V wire Grey 100 V wire
P 2110
60 W (166 Ω) 30 W (333 Ω)
P 3115
120 W (83 Ω) 60 W (166 Ω)
Model Black 70 V wire Grey 70 V wire
P 2110
30 W (163 Ω) 15 W (326 Ω)
P 3115
60 W (81 Ω) 30 W (163 Ω)
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APPLICATION GUIDE
3.3 Mounting Brackets
Each speaker is supplied with U brackets for installation in Horizontal or Vertical positions. Horizontal U bracket installation: fix the loudspeaker to the U bracket by tightening the two bolts (M8 on P 2110, M10 on P 3115 and P 6215) into the two loudspeaker central holes. Vertical U bracket installation: put the two shims on the loudspeaker and fix them by tightening two pairs of bolts (M8 on P 2110, M10 on P 3115 and P 6215). Then fix the loudspeaker to the U bracket by tightening the other two bolts into the two loudspeaker central holes.
3.4 Aiming of P-Series Loudspeakers
The aiming of the P Series speakers is possible whilst fixing the U brackets. Before tightening the two centre bolts, adjust the loudspeaker tilt and then (when you are sure of the correct angle) fix the position using the thread­forming screws into the U bracket (small holes next to the central hole).
3.5 Conversion to sealed box for outdoor installation
By default, P series loudspeakers are vented boxes (bass-reflex). Yet, all P Series loudspeakers can be converted to a sealed box for outdoor application (in order to get IP 55 protection) by proceeding as follows:
· take off the loudspeaker front grille by removing the eight screws;
· cover the four reflex ports (the holes) by using the dedicated plugs (to be fixed each with three thread-forming screws);
· re-fit the loudspeaker grille.
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3.6 Natural and Artificial Echoes
Outdoors, it’s common for sound to be reflected by a wall or a building. If a listener hears a single reflection 50 milliseconds or more after the direct sound, he will perceive it as an annoying echo that reduces intelligibility. It’s possible also to perceive an “artificial echo” by separating two loudspeakers so that a listener hears the second loudspeaker at least 50 milliseconds after they hear the first loudspeaker. There’s no reflection here but the effect is the same as an unwanted echo. To avoid natural echoes, try to aim loudspeakers away from walls or buildings. To avoid artificial echoes, use a point source or distributed design as illustrated in this Application Guide. When it’s necessary to split the loudspeakers, try to avoid overlapping coverage, each listener should hear only one loudspeaker. Imagine an outdoor system at a sports facility where the announcer is located 11 m or more from the loudspeakers. The announcer will hear his or her own voice. Then, about 35 milliseconds later, the announcer will hear his/her own voice again as an echo! Although a broadcast professional or other trained announcer may be able to ignore this echo, most people find it difficult to speak in this situation. To minimize the problem, the announcer should stay in a closed room. Alternatively, give the announcer a local monitor loudspeaker or a set of headphones so he/ she can hear their own voice strongly. This masks the echo and minimizes the nuisance.
3.7 Notes on placement
In many cases P series speakers are installed in large environments, either indoor or outdoors, quite often highly reverberant. A distributed system design, where speakers are placed homogeneously (for example hanging from the roof) and each part of the audience is kept as close as possible to a loudspeaker, is usually the better way to maintain good intelligibility even in environments with bad acoustic features. In a distributed system it’s important not to overlap the areas that are covered from different speakers to avoid artificial echoes as discussed above. If the speakers are placed as remote repeaters of sound coming, for example, from a main stage, it’s highly recommended to compensate for the different path with a properly configured delay device. In some cases a system design based on large central clusters is preferred due to scarcity of rigging points or for ease of installation, in this case it’s recommended to correctly direct the speakers towards the audience avoiding walls or ceilings and to avoid overlaps as much as possible. For correct cluster configurations the following tables may help you.
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APPLICATION GUIDE
4 Cluster Mounting
4.1 Description
P series speakers can be mounted in clusters/line arrays using the AC P10-BR (P2110) or AC P15-BR (P3115/P6215) accessories. For each adjacent speaker the following angles can be chosen using different holes: 0°, 10°, 20°, 30°, 40°. Up to 4 speakers can be mounted in a single cluster.
4.2 Setting the angle between loudspeakers
The angle between 2 loudspeakers of a cluster depends on how the U brackets are matched. The possible values are: 0° (no angle, the 2 loudspeakers are aimed to the same direction), 10°, 20°, 30° or 40°. A dedicated acoustic project / study is to be carried out to find the proper angle.
Assemble the loudspeakers to the brackets on both sides, using the accessory which included in each KIT.
30° 20° 10° 0°40°
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4.3 Example of 4 loudspeaker Cluster
For suspended installation with chains (not included) Use 4 M10 D-shackles (not included, 2 on the top and 2 on the bottom; fitted to the rear corner holes of the brackets).
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