Catalog Index > 521 Series Classic Audio Patchbays

E3 Rear Interface	E90 Rear Interface

Our 521 Series features our classic, non-programmable audio patchbays.



With a jack configuration of 2x26, the 521 Series comes with the most options of any audio patchbay, including rear panel configurations, normals, grounds, stereo spacing, panel color and rack-unit height.



All Bittree audio patchbays bring you enhanced studio versatility and instant signal re-routing, and are perfect for master control and central switching I/O, audio console I/O, recording devices I/O, and audio routing switcher bypass and input rerouting.



Our audio patchbays are built to AES/EBU specifications, and are internally wired with low-capacitance, shielded, 110-ohm twisted pairs. The low-capacitance characteristics make them ideal for both analog as well as digital applications.



Patchbays used for digital applications are typically full-normaled or non-normaled, since it is necessary to provide a single 110-ohm load for each source. This feature also ensures prevention of impedance mismatches, improper loading, multiple connections, and double termination.

Features Jacks rated to 30,000 minimum insertion cycles Copper-nickel-silver alloy leaf springs with gold-plated cross bar switching contacts and nickel-plated sleeve bushings Precision-stamped reinforced steel jack frame Gold-plated contacts used in E3 and E90 rear interface Wired with low-capacitance, AES/EBU-rated shielded, twisted pair Large user-friendly designation strips Panels made from 3/16" solid aluminum with a durable powder-coat finish Mating connectors, contacts and normals (where applicable) are included with all standard rear interfaces

Options Available in 1, 1.5 or 2 rack units (RU) Fully enclosed chassis available in 7" or 12" depth E3 and E90 rear interfaces available Normals can be pre-programmed to full-normal, half-normal or non-normal Normals looped internally or brought out to the rear interface Grounding can be pre-programmed to bussed, isolated, looped or switched Mono or stereo jack spacing Over/under or over/over designation strips Black or gray front panel

Patchcords
		Audio Long-Frame (1/4 Colors  Black  Red  Yellow  Green  Blue  Purple Length  24" / 61 cm  36" / 92 cm  48" / 122 cm  60" / 153 cm  72" / 184 cm