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Project Patch Details
Project Patch Cables
All of our cables are made in America by Signal Transport, in accordance with standards developed through years of high end installations. The raw cable is made to our specifications by Belden. It's a 24 awg and each twisted pair is individually shielded, jacketed and numbered. The cable is rated type CM in accordance with the National Electrical Code for permanent installation. All cables are fitted with the modular Project Patch Connector at the patchbay end. When choosing your cables, keep your patchbay layout in mind. 8-ch cables are convenient for large groupings of signals (line inputs, bus outputs), whereas 4-ch and 2-ch cables are more flexible in their placement.
When ordering length is specified as overall length (squid breakouts subtracted from the total). All ordering numbers are shown for 10 ft. cables. Standard lengths are 10 ft. and 25 ft. (to order 25 ft. cables replace designated 10 with 25). Custom Cables are available. Contact us for a quote on any custom requirements.
Input/Output (Type I/O) cables provide signal flow both to and from the equipment in a single cable. This is necessary where the connector on the equipment is bi-directional (i.e. console insert).
Mono I/O Device:
Multipin (type MP) cables are designed to work with a variety of equipment with multipin connectors for audio, such as the popular Modular Digital Multiracks. Channel counts are dictated by the style.
Signal Transport Synth Driver:
Squid (Type SQ) are cables with a 12" fan out at the equipment end and are terminated in single channel connectors such as 1/4" phone plugs or XLR's. They are used for equipment such as mixers, synthesizers, tape machines, and anything else that uses these connectors. When choosing 1/4" squids be sure to verify whether your equipment is balanced or unbalanced.
1/4" Unbalanced Phone:
1/4" Balanced Phone:
Raw cable and connectors so you can do it yourself. If you are wiring your own studio, it might help to take a look at the System Performance section on the last page of this booklet.
Project Patch is complemented with a line of Mogami Mini (t.t., bantam) patch cords. These cords are available in red or black and supplied in several lengths.
Normalling jumpers are available for many common applications, and we are developing new designs as we go along. Please call with your requirements - we may have it. You can also make your own from mating connectors, using 24 awg hook-up wire. There is no need to shield a connection this short.
2-Ch Wild Jumper:
2-Ch Daisy Chain:
8-Ch straight down:
8-Ch down / multed output:
8-Ch multitrack chain:
When you buy equipment with digital audio performance, you expect to be able to get the same performance in your studio. So how come it buzzes when you hook it up with off-the-shelf patchbays and cabling? Because a system of audio equipment can be susceptible to noise if not wired properly. This subject is the source of much confusion and frustration in small installations. We base the Project Patch system on a simple, proven philosophy, developed over years of small and large system installations. When you do a Project Patch install according to our instructions, you get a system that works the first time, every time.
Grounding and Shielding
The most insidious route by which hum and noise enter your system is via currents injected into the shield terminal of certain equipment that is sensitive to that current. The easiest way to avoid this is to follow the "one end only" rule - disconnect all audio shields at one end to break the ground loop responsible for current flow (this is why our cables come standard with shields disconnected at the patchbay end). For the rule to work, all equipment must be grounded, usually through the third wire of the power cord or the rack rail. If you have equipment which is not grounded by one of these means, you must supply a wire to the chassis. One the Project Patchbay, jack shields are bussed and brought out to a binding post on the back panel for connection to your system ground. This is simply to provide a ground reference to the patch cord shield, and can be a wire to a console equipment chassis. Rear panel jumpers allow shield lifting in groups of 8 channels for further flexibility. When used with stock Project Patch cables these jumpers are left in place.
Project Patch is designed with fully balanced wiring throughout. Best results will always be achieved with balanced equipment, but unbalanced equipment will also work, if you pay close attention to what will be patched together. Simply put, the best performance is from a balanced output driving a balanced input. The worst is anything driving an unbalanced input. If you can, use outboard balancing devices to balance your equipment. Keep in mind that a system with a lot of unbalanced inputs will probably buzz unless exceptional care is taken with the power and the grounding. On unbalanced cables we tie the signal low and shield together at the equipment end. If you are experiencing difficulties with unbalanced equipment, take a look at Signal Transport's Synth Driver - a high density balancing amplifier system which can convert all your unbalanced outputs to balanced.
As the recording industry evolves, many production studios are moving out of large facilities and into smaller project rooms. There has been a significant shift in the quality of recording equipment going up and its cost going down. Because of this, the need for optimized wiring interfaces to extract the absolute best performance from this equipment is greater than ever. However, many studios or private project rooms, can't afford nor need to have a professional installation team come in and wire their facility. What are needed are modular systems that help the "do-it-yourself" type of person put together a system quickly, easily, and inexpensively. So we had an idea - build a patch bay wired with a printed circuit board, incorporate high quality, inexpensive gold plated header connectors and offer a full line of modular cables to compliment it and allow quick, plug-in installation. Project Patch is a concept that's long overdue.