Pro Intercom BP2B Portable Headset Station (2 Circuit)

Miniature Headset Station (Beltpack), 2 Circuit, Binaural Headset Feed

The BP2 is actually 2 BP1s in the same enclosure. The A and B circuits operate independently of one another and may be used simultaneously. Only the headset amplifier is shared so that both circuits can be monitored on a single-muff headset. As you can see from the photograph, each circuit has its own volume control, signal button, signal lamp, mic on/off switch and sidetone control. The 2 circuits are connected to the rear panel XLRs so a Y-cable or SB1 Splitter Box is necessary for each circuit if you wish to loop through to the next station in that circuit.

The BP2B is essentially the same as the BP2 except that it has two earspeaker amplifiers and a 5-pin headset XLR on the rear. Used with a dual-muff headset the operator can monitor circuit A in one earspeaker and circuit B in the other. The microphone speaks to both circuits.

Performance: The BP2 or BP2B portable headset station may be worn on the belt or hung on the wall by its sturdy belt-clip. Soft plastic strips on the underside help hold it in place when set on top of a console. The matte black finish minimizes visibility. Both are true 2-circuit units, permitting the user to talk and/or listen to either or both circuits simultaneously. Separate controls are provided for each circuit.

The BP2 mixes the incoming audio from both circuits to one earphone.

The BP2B supplies separate audio from each circuit to each ear (binaural).

The top (or front) panel contains controls for switching each microphone circuit on and off, for controlling each listening level, and for signaling on each circuit. They are easily identifiable by touch. A recessed, screwdriver-adjust control is provided for varying the level of the user's voice to be heard in his own earphone (sidetone). The bottom (or back) panel provides two 3-pin female XLRs for connection to two circuits, and a male XLR for connection of any standard communications headset with a dynamic microphone. Since each of the two back panel 3-pin female XLRs are dedicated to one of the two circuits, it is not possible to loop-through these stations. To loop onwards requires a y-cable consisting of one 3-pin male XLR and two 3-pin female XLRs. The BP2 has a 4-pin headset connector; the BP2B has a 5-pin.

Durability: The ribbed, extruded aluminum case; glass-filled nylon end bezels; internal support system for the PC board; best-quality XLR-type connectors, and; recessed controls, all contribute to the outstanding ability of the BP2 and BP2B to withstand rough usage.

Value: The comparatively low prices of the BP2 and BP2B are made possible by the minimized assembly cost resulting from simplicity of construction. Simple construction also affords the use of higher quality components, and increases the ease (thus lowering the cost) of servicing.

Compatibility: The BP2 and the BP2B are plug-in compatible with Clear-Com and other popular 200 unbalanced headset intercom systems.

Specifications:

• Power requirement: 24~30VDC, 10 mA quiescent, 30mA max. (with signal lamp lit)
• Headphone output: 8~4K ohm acceptable, 200 ohm ideal
• Microphone input: 200 ~ 600 ohm Dynamic
• Sidetone rejection: >50dB
• Audio bridging impedance: 200 ohm unbalanced
• Size: 3.70 x 4.30 x 2.50 in. (93.98 x 109.22 x 63.5 mm)
• Weight: 13.5 oz. (0.385Kg>)