User manual MARTIN AUDIO WX3A

[. . . ] To change the mains voltage, remove the rectangular fuse cap and replace it so that the arrow on the body of the rectangle indicates the correct voltage. The earth terminal on the IEC connector is permanently connected to the metal casing. The unit is supplied with the 0V electronic reference ground taken to the case via an internal `signal ground' lead and space receptacle, which inserts a ground lift resistor when in the `Earth Off' position. To connect the 0V electronic reference direct to the chassis ground, use a pair of pliers to pull off the space receptacle from the `Earth Off' position and push it onto the 0V spade terminal (marked Earth On, on the PCB). [. . . ] Active crossover frequency (1500Hz), relative output levels, driver alignment and equalisation are all pre-set for the W2 system. LF EQ circuitry gives 6dB of boost at 65Hz for full-range operation. W2 ACTIVE W2 ACTIVE LF MF/HF LF MF/HF LEFT INPUT RIGHT INPUT Fig 4. W2 Active Configuration using WX3AW2LF Card. 6. 2 WX3A / W3 - W3 Configuration (Stereo) The WX3AW3LF board is used to control the W3 loudspeaker system (see Fig 5). Active crossover frequency (650Hz), relative output levels, driver alignment and equalisation are all pre-set for the W3 system. LF EQ circuitry gives 6dB of boost at 65Hz for full-range operation. W3 ACTIVE W3 ACTIVE LF MF/HF LF MF/HF LEFT INPUT RIGHT INPUT Fig 5. W3 Active Configuration using WX3AW3LF Card. 7 Martin Audio ­ WX3A System Controller ENGLISH CONTENTS < 6. 3 > PRINT GUIDES WX3A - Sub Bass and Full Range/High Pass Configuration (Stereo) The WX3ASF plug-in board is used to control the W1, passive W2 and passive W3 when operating either as stand-alone full-range systems or with additional WS2 sub-bass enclosures. It is also used to provide the outputs for other WX3A controllers configured to drive active W2 and W3 systems used in stereo with WS2 sub-bass enclosures. PCB mounted jumper links on the plug-in board select various alignment options for the full-range/high pass outputs (Bands 2 and 4). 6 If full-range mode (1) is selected, +6dB of low frequency boost at 65Hz is applied to the full-range outputs (Bands 2 & 4). If 100Hz high-pass crossover mode (2) is selected, the full-range outputs are re-configured as 100Hz high-pass outputs. In Overlap Mode (3), the sub-bass and full-range enclosures are allowed to overlap and 3dB of LF boost is applied to the full-range enclosure. This can be useful when the full-range systems are flown some distance from the sub-bass. This mode allows some low frequency energy to be reproduced by the flown loudspeakers without using up as much headroom as would be required if the full-range +6dB low frequency boost were applied. 8 Martin Audio ­ WX3A System Controller ENGLISH CONTENTS < > PRINT GUIDES Plug-in board jumper link positions are as follows: Mode (1), Full Range Mode (2), 100Hz high-pass Mode (3), Overlap Jumper J4/J5 J3/J6 J4/J5 J3/J6 J4/J5 J3/J6 Position B A A B B A Jumper J1/J7 J2/J8 J1/J7 J2/J8 J1/J7 J2/J8 Position OUT OUT IN IN IN IN 6. 4 W1, W2, W3 Passive Operation Using WX3ASF Card (Stereo) A WX3A controller is used to provide LF equalisation and limiter functions for stand-alone W1, W2 and passive W3 systems operated full-range (see Fig 7). In this instance the W1, W2 and W3 should be driven from Bands 2 and 4 set to operate in full-range Mode (1) (see Section 6. 3). W2 PASSIVE W1 W1 W2 PASSIVE NOT USED F. R. NOT USED F. R. LEFT INPUT W3 PASSIVE RIGHT INPUT W3 PASSIVE Fig 7. W1, W2 or W3 Passive operation using WX3ASF Card 6. 5 W1, W2, W3 Passive with Sub Bass Operation Using WX3ASF (Stereo) The WX3ASF may also be used to drive a sub-bass system to augment the W1, W2 and passive W3 systems (see Fig 8). The WX3A is normally operated in 100Hz high-pass/crossover Mode (2) (see Section 6. 3) for this configuration, although it may be operated in Overlap Mode (3) if overlap is required for flown systems. Full-range Mode (1) should only be used with care, in special cases where distant flown systems are required to run fullrange. [. . . ] JUMPER BAND 1 BAND 2 BAND 3 BAND 4 J1 J2 J3 J4 POSITION RIGHT LEFT RIGHT LEFT RIGHT LEFT RIGHT LEFT LIMITER ON OFF ON OFF ON OFF ON OFF IMPORTANT NOTE If another WX3A is to be driven from any of the outputs - for instance when a WX3ASF provides the high-pass outputs for a WX3A configured for an active W2 or W3 - the limiters should be defeated on those outputs to prevent them from operating in advance of the limiters in the following units (see Fig 9). 9 WARRANTY Martin Audio WX3A System Controllers are warranted against manufacturing defects in materials or craftsmanship over a period of 1 year from the date of original purchase. During the warranty period Martin Audio will, at it's discretion, either repair or replace products which prove to be defective provided that the product is returned in its original packaging, shipping prepaid, to an authorised Martin Audio service agent or distributor. cannot be held responsible for defects caused by unauthorised modifications, improper use, negligence, exposure to inclement weather conditions, act of God or accident, or any use of this product that is not in accordance with the instructions provided by Martin Audio. This warranty is exclusive and no other warranty is expressed or implied. [. . . ]