Nexo PS8 User Manual
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Nexo PS8 User Manual

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PS Series
PS8 - Analogue TDcontroller PS8 - PS8Amp - LS400
PS10 - Analogue TDcontroller PS10- PS10Amp - LS500
PS15 - PS15Bass - Analogue TDcontroller PS15 - LS1200
User Manual

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Summary of Contents for Nexo PS8

  • Page 1 PS Series PS8 - Analogue TDcontroller PS8 - PS8Amp - LS400 PS10 - Analogue TDcontroller PS10- PS10Amp - LS500 PS15 - PS15Bass - Analogue TDcontroller PS15 - LS1200 User Manual...

  • Page 2: Important Safety Instructions

    Rules. Pursuant to Part 15.21 of the FCC Rules, any changes or periods of time. modifications to this equipment not expressly approved by NEXO S.A. may 14) Refer all servicing to qualified service personnel. Servicing is required cause, harmful interference and void the FCC authorization to operate this when the apparatus has been damaged in any way, such as power-supply equipment.

  • Page 3: Table Of Contents

    ..............................26 TAND ALONE MPLIFIERS ANALOGUE TDCONTROLLERS SPECIFICATIONS ....................28 PS8 & LS400 : SPECIFICATIONS, CURVES & DIAGRAMS ..................29 PS10 & LS500 : SPECIFICATIONS, CURVES & DIAGRAMS ..................32 PS15 & LS1200 : SPECIFICATIONS, CURVES & DIAGRAMS ..................36 USER NOTES..................................40 PS SERIES MANUAL REV3 10/10/05...

  • Page 4: Introduction

    INTRODUCTION ___________________________________________________________________________________________________ INTRODUCTION Thank you for selecting NEXO PS Series equipment. This manual will provide you with useful and important information about your PS speaker system: PS8 & optional LS400 SubBass. PS10 & optional LS500 SubBass. PS15 & optional LS1200 SubBass and PS15Bass The PS15 can be used in either passive or bi-amped mode (two-way active).

  • Page 5: Loudspeakers

    TDcontroller: We strongly recommend that all new users carefully read this manual with regard to the specific setup and use of the TDcontroller. Analogue PS8 TDcontroller for PS8 systems (with or without LS400). Analogue PS10 TDcontroller for PS10 systems (with or without LS500).
  • Page 6 LOUDSPEAKERS ___________________________________________________________________________________________________ PS15Bass use The PS15Bass is a passive cabinet that uses the same signal as the PS15. It should therefore be connected in parallel with the PS15. You can use the same controller for both cabinets; both will be equally protected. If you are using the active mode of the PS15 the PS15Bass should be plugged into the LF channel of the PS15 (1+/1-);...
  • Page 7 LOUDSPEAKERS ___________________________________________________________________________________________________ On the PS8, LS400, PS10, LS500, PS15 (used in passive mode), PS15 Bass and LS1200, the connectors are wired as follows: Speakon Connector Signal Pin 1+ SubBass + (optional) Pin 1- SubBass - (optional) Pin 2+ Main PS system +...

  • Page 8: Asymmetrical Horn Configuration

    CAD software and stage monitoring. The specific dispersion of the PS8, PS10 & PS15 horn can be seen on figure 1 ("front of house" configuration): As seen on the side view, vertical coverage is narrower above horn axis (+25°) than below (-30°).

  • Page 9: Active / Passive Configuration (Ps15 Only)

    LOUDSPEAKERS ___________________________________________________________________________________________________ « Stage Monitor » Configuration For stage monitors the required coverage is always wider when performers are close to the wedge (above the horn axis) 100˚ than when they move away from it (below the horn axis). For floor monitor use the horn must be rotated with its "wide"...

  • Page 10: Subbass Use (Optional)

    P.10 LOUDSPEAKERS ___________________________________________________________________________________________________ SubBass Use (optional) General Recommendations The SubBass section of the TDcontroller is monophonic (the Left and Right channels are summed at the input of the Controller). In a Stereo SubBass installation using 2 TDcontrollers, bear in mind that when only one Controller input is used, this will lower the gain of the Sub Output by -6 dB (as the nominal level is calculated for a 2 input use).
  • Page 11 Stand, Mast & U Coupler PS8, PS10 and PS15 have a built in 35 mm (1 3/8”) diameter stand adapter. Cabinets can be positioned directly on a general-purpose speaker stand or on a mast inserted in the stand adapter fitted on top of the LS400, LS500 &...
  • Page 12 HF horn mounting bolts. Nexo recommend that this safety wire is always used when the PS8 cabinet is to be used in public areas above head height, for example when the cabinets are to be flown or wall mounted. It is the responsibility of the user to install the safety wire in all such situation.

  • Page 13: Use & Maintenance

    Use & Maintenance Checking the PS10 & PS15 internal fuses The following paragraph concerns only the PS10 and PS15 cabinets, since the PS8 is fitted with a re- settable fuse that does not require maintenance. The function of these fuses is to protect the passive crossover against overheating if a speaker component is accidentally disconnected or fails open circuit.

  • Page 14: Troubleshooting

    Nexo loudspeakers and electronics are covered against defects in workmanship or materials for a period of two (2) years from the original date of purchase. At the discretion of Nexo, the defective item will be repaired / replaced with no charge for materials / labor. The item to be repaired must be adequately packaged and dispatched, prepaid, to an authorized Nexo distributor / service center.

  • Page 15: Analogue Tdcontroller Setting-Up Advice

    (see also p.15) NEXO TDcontrollers don’t provide a mean to switch off the unit from the front panel. As they are intended to be rack mounted the back panel is not accessible during use. Therefore it is left to the user to provide a disconnection mean readily operable.
  • Page 16 The emission (this word describes all types of electromagnetic noise radiated by the equipment) requirements which have been applied to Nexo’s TDcontrollers are the stringent requirements of the ”Commercial and light industrial environment” of the product family EMC standard for emission.
  • Page 17 P.17 ANALOGUE TDCONTROLLER SETTING-UP ADVICE ___________________________________________________________________________________________________ any kind of twisted pair cable will be adequate. The TDcontroller is intended to be used with symmetrical (balanced) sources (for instance a mixer) and symmetrical loads (for instance a power amplifier (see figure). You can see that the TDcontroller provides a low impedance path between pin 1 of its XLR connectors and its chassis.

  • Page 18: Analogue Tdcontroller User Guide

    Analogue TDcontroller USER GUIDE Read before use Each Analogue TDcontroller is designed to be used with its proper set of speaker cabinet (PS8 / LS400, PS10 / LS500; PS15 / LS1200). They are not interchangeable. Its main functions are: To optimize the response of the system...
  • Page 19 P.19 ANALOGUE TDCONTROLLER USER GUIDE ___________________________________________________________________________________________________ Turning the LS channel Overlap / Crossover Pushing CONFIGURE button modifies the high pass filtering. It does not affect the sub output, which will always be a filtered sub signal. (This is therefore not a Sub on/off button). In the «...

  • Page 20: Rear Panel

    P.20 ANALOGUE TDCONTROLLER USER GUIDE ___________________________________________________________________________________________________ Rear Panel Audio Inputs The audio inputs are two 3-pin female XLR connectors located in the area labeled BALANCED INPUTS. Signal is applied between pins 2 and 3, pin 1 is connected to ground. When the Controller is linked to a signal source with balanced outputs, the XLR connections are simply wired pin to pin (1 to 1, etc.).
  • Page 21 P.21 ANALOGUE TDCONTROLLER USER GUIDE ___________________________________________________________________________________________________ Earth Lift The push button labeled « Earth Lift » allows connection (depressed position), or disconnection (out position) between the signal ground and the mains earth, which is itself linked to the chassis. Using this button may help to eliminate hum due to ground loops created in the system.

  • Page 22: Tdcontroller Reference Guide

    P.22 TDCONTROLLER REFERENCE GUIDE ___________________________________________________________________________________________________ TDcontroller REFERENCE GUIDE Linear section The characteristics of the linear section are independent of signal level, as opposed to the servo control functions described in next paragraph. Subsonic and VHF filtering Low and high-pass filters are used to remove signals out of the usable frequency range, eliminating sub- and ultra-sonic components that could possibly degrade the performance of the Controller and amplifiers.
  • Page 23 P.23 TDCONTROLLER REFERENCE GUIDE ___________________________________________________________________________________________________ Displacement control The signal from the sense input is fed through a shaping filter producing a signal proportional to the voice coil displacement. This control signal is compared to a fixed value and if exceeded, the LF-VCEQ is activated with very short attack time to reduce speaker excursion.

  • Page 24: Amplifiers

    Please note that this equipment is not UL approved and therefore not sold on the US market. The PS8Amp and PS10Amp are power amplifiers tailored for PS8 and PS10 system and their respective LS400 & LS500 sub bass requirements. Their structure and power being identical, they share the same...

  • Page 25: Level Control

    P.25 AMPLIFIERS ___________________________________________________________________________________________________ Outputs The two Speakon connectors are automatically configured with a visual indication of the current wiring. Configuration can be made while the system is operating. Sub On = 3 amplifier channels : The two PS Stereo channels are assigned to poles 2+ and 2- on the L &...

  • Page 26: Stand Alone Amplifiers

    Stand alone Amplifiers Recommended Power NEXO recommends high power amplifiers in all cases, budget constraints being the only reason to select lower power amplifiers. If a problem occurs on an installation without protection, the use of a lower power amplifier generating half their rated output power (-3dB) will not prevent possible damage. This is due to...
  • Page 27 Gain value NEXO recommends low gain amplifiers: +26dB is recommended, as it is both adequately low and quite common. This gain level considerably improves signal to noise ratio and allows all preceding electronic gear, including the TDcontroller, to operate at an optimum level. Remember that using a higher gain amplifier will proportionally raise the noise floor level by the same amount.

  • Page 28: Analogue Tdcontrollers Specifications

    SYSTEM OPERATION Applicable Products The PS8 TDcontroller is precisely matched to the PS & LS cabinets and includes sophisticated protection systems. Use of either product without a properly connected Controller will result in poor sound quality and may damage the components.

  • Page 29: Ps8 & Ls400 : Specifications, Curves & Diagrams

    PS8 are wired 2- & 2+ on Speakon connectors, LS400 on 1- & 1+. Loop through Speakons are present on both. Single identical cables can thus be used to loop through combinations of up to 2 x PS8 & 1 x LS400 in no particular order.
  • Page 30 P.30 PS8 & LS400 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ Dimensions PS SERIES MANUAL REV3 10/10/05...
  • Page 31 P.31 PS8 & LS400 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ ON AXIS RESPONSE (dB) TOTAL DISTORTION (%) 0.1% On Axis Responses PS8 & PS8 + LS400. PS8+LS400 : THD for 110dBSPL @ 1m. IMPEDANCE (Ohms) All measurements made with PS8TDcontroller.

  • Page 32: Ps10 & Ls500 : Specifications, Curves & Diagrams

    P.32 PS10 & LS500 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ PS10 & LS500 : SPECIFICATIONS, CURVES & DIAGRAMS SYSTEM SPECIFICATIONS PS10 with PS10 TDcontroller LSub 500 with PS10 TDcontroller Frequency Response [a] 65 Hz - 20 kHz ±3dB 40 Hz - 110 Hz ±3dB Usable Range @-6dB [a] 58 Hz - 21 kHz 38Hz - 120 Hz...
  • Page 33 LS500 As part of a policy of continual improvement, NEXO reserves the right to change specifications without notice. [a] Response curves & data : Anechoïc Far Field for the PS10 + PS10TD. Half-Space Anechoïc radiation for the LS500 + PS10TD.
  • Page 34 P.34 PS10 & LS500 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ PS10 Curves ON AXIS RESPONSE (dB) TOTAL DISTORSION (%) 10.000 -10.00 -20.00 -30.00 c 1 : On axis responses PS10 & PS10 + LS500 c 2 : PS10 + LS500 : THD for 110 dBSPL @ 1m. IMPEDANCE (Log Z) 30.000 0°...
  • Page 35 P.35 PS10 & LS500 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ Connection Diagrams PS SERIES MANUAL REV3 10/10/05...

  • Page 36: Ps15 & Ls1200 : Specifications, Curves & Diagrams

    P.36 PS15 & LS1200 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ PS15 & LS1200 : SPECIFICATIONS, CURVES & DIAGRAMS SYSTEM SPECIFICATIONS PS15 with PS15 TDcontroller MK2 LSub 1200 with PS15 TDcontroller MK2 Frequency Response [a] 50 Hz - 18 kHz ±3 dB 30 Hz - 120 Hz ±3 dB Usable Range @-6 dB [a] 47 Hz - 18 kHz...
  • Page 37 LS1000. As part of a policy of continual improvement, NEXO reserves the right to change specifications without notice. [a] Response curves & data : Anechoic Far Field for the PS15 + PS15TD. Half-Space Anechoic radiation for the LS1000 + PS15TD.
  • Page 38 P.38 PS15 & LS1200 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ PS15 : Curves ON AXIS RESPONSE (dB) TOTAL DISTORSION (%) 10.000 -10.00 -20.00 -30.00 c 9 : On axis responses PS15 & PS15 + LS1000 c 10 : PS15 + LS1000 : THD for 115 dBSPL @ 1m. IMPEDANCE 32 Ohm 16 Ohm...
  • Page 39 P.39 PS15 & LS1200 : SPECIFICATIONS, CURVES & DIAGRAMS ___________________________________________________________________________________________________ Connection Diagrams PS SERIES MANUAL REV3 10/10/05...

  • Page 40: User Notes

    P.40 USER NOTES ___________________________________________________________________________________________________ User notes PS SERIES MANUAL REV3 10/10/05...

This manual is also suitable for:

Ps15Ps10

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