User manual BEHRINGER PX2000

[. . . ] When you insert a plug into the upper front jack, the signal routed through the rear path is not interrupted. Only when the lower front jack is used will the rearpanel route be split up, so that the two upper and the two lower phone jacks are connected to one another. This configuration is called input break and is used mainly for insert paths. So you can easily patch the signal from a mixing console channel at the patchbay without interrupting the signal flow in the channel. 1. 3 Normalled Here, and in contrast to the half-normalled setup, the signal route of the rear phone jacks is interrupted when you insert a plug both into the upper and lower front jacks. 1. 4 Open This mode is used to connect devices such as sound modules or CD players having no inputs of their own. [. . . ] Modules 17 through 20 are normalled and have the FX inputs and the aux sends connected, 21 through 24 are also normalled and are patched to the two stereo aux returns with the FX outputs. In patchbay 3 , modules 1 through 16 are for the channel insert. These modules are half-normalled, so that you have an additional route for the channel signals. The same applies to the insert paths of the subgroups and the master output. The headphones amp is connected to 23 & 24, which are normalled and connected to the control room outputs of the mixing console. Of course, you can also use pre-fader aux paths for the headphones mix. 3 ULTRAPATCH PRO PX2000 Patchbay 4 manages the dynamics and frequency-processing devices in an open configuration (modules 1 through 16). Multigates and compressors should be used here, in particular. Modules 17 through 24 are used to provide a parallel split, i. e. two modules are patched to each other on the rear with one patch cord, so that you can split up a signal applied on the front panel to several destinations. These modules have a parallel configuration. It should be noted that patchbays should be placed one below the other in such a way that the patch cords wont hang all over the patchbays. In our example you dont have to span great distances, for instance, to patch the dynamics and EQs to the insert paths. 3. LOOMING PROBLEMS Loom wiring is an art unto itself, and it is worth taking time out to get it right. First off, it is important to avoid earth loops (a looped wire acts an aerial, picking up hum and electromagnetic radiation). Every part of that tree is connected to every other part, but only by one route. Thats how the total earth picture for your entire studio should look. Dont take the earth off your power cable plug to reduce audible 50 Hz mains hum. Rather you should be looking at disconnecting the signal screen somewhere (one or several audio cables). It is good practice to ensure that all screens are commoned at the patchbay, in which case all unearthed equipment would pick up earth from this point via a single screen (more than one route = an earth loop), while mains-earthed equipment would have all screens cut at the equipment end. Some quality equipment has an independent signal and mains earth. In this case at least one screen should carry earth to the equipment. Sometimes the only way to find out is suck and see. [. . . ] Shipments without freight prepaid will not be accepted. Warranty services will be furnished only if the product is accompanied by a copy of the original retail dealers invoice. Any product deemed eligible for repair or replacement by BEHRINGER under the terms of this warranty will be repaired or replaced within 30 days of receipt of the product at BEHRINGER. If the product needs to be modified or adapted in order to comply with applicable technical or safety standards on a national or local level, in any country which is not the country for which the product was originally developed and manufactured, this modification/adaptation shall not be considered a defect in materials or workmanship. [. . . ]