SPECIALTY INTERFACE BOXES


AB-8

8 Channel Switcher
LM2U, LM2B

Level Matchers
ISO2

2 Channel Line Isolator
ISO-8, ISO-8Q

2 Channel Line Isolator
IMPPAD

Inline Attenuators
IMPHR

Phase / Polarity Reverse

LIFTER

Ground Lift Adapter
LTLIMP

Little Imp Hi - Lo Adapter
IL-19

Iso Xfmr
BCJ-XJ-TRB

AES/EBU Adapters
PYROBOX

Pyrotechnic Network Expander


AB-8
8-Channel Mic / Line Switcher


Click for larger photo

Click for larger photo

The AB-8 is an 8-channel, balanced, bi-directional signal switcher, 1 in - 2 out or 2 in - 1 out per channel.

Features:
  • Eight channels of balanced A - B switching for line, mic or MIDI signals.

  • Each of the eight channels can be individually switched or assigned to a Master Control circuit.

  • Master switching is controlled through front panel pushbuttons, optional footswitch or automatically triggered by loss of signal on channel one of A input.

  • Can be configured as two inputs to one output, one input to two outputs or a mixture of both.

  • Multiple units can be ganged together under Master Control of the first unit or through control Voltage input.

  • Indicator lights show status of each channel.

  • AUTO SWITCH functions automatically switches to redundant copy of backing tracks for live performance.

  • AUTO SWITCH has sensitivity and hold time controls to accommodate input signal levels from -20dB to +20dB

  • Easily switch from tracking to mixing in recording setups.

  • All signal paths revert A to Common when AC power is removed.

  • Internal DIP switches configure ground path switching and DC Voltage blocking requirements.


LM2U and LM2B
Level Matching Devices


These handy boxes can be used to match consumer grade audio devices (-10dB) to pro equipment (+4dB). These units convert the level and provide the conversion from balanced to unbalanced operation and vice-versa.

Each unit features:
  • XLR, TRS mini and RCA phono jacks
  • Level controls
  • Active circuitry, power by Whirlwind PS24 supply (included)

Model #s:
LM2U and LM2B

Frequency Response 20-20 kHz at unity gain, ± .1 dBv
Total Harmonic Distortion +noise < .0015% 20-20kHz at unity gain; < .0024% 20-20 kHz, +4 to -10 levels
Phase Shift < 11.4 degrees 20-20 kHz; < 2 degrees 100-4 kHz
Dynamic range 95.7 dB @ .1% thd
Total Gain 40 dBv
Range of level pot -40 to + 40 dBv
Maximum Input level +17 dBv
Input Impedance 20 k Ohms balanced
Maximum output level +17 dBv
Output Impedance 100 Ohms unbalanced
Noise at 20 dBv of gain -87.4 dBv 20-20 kHz
Noise at unity gain -103.4 dBv 20-20 kHz
Noise at 40 dBv of gain -68.1 dBv
Power consumption 34 mA DC max.
Stereo Separation 94 dB at 20 kHz; 110 dB at 1 kHz; 120 dB at 20 Hz



ISO-2 DUAL LINE LEVEL ISOLATOR and BALANCER


    

The ISO-2 is a two channel isolation box and line balancer.

As an isolation unit, use it to isolate lines to press and video feeds or on-stage power amps. It's a handy hum and buzz fighter for broadcast or live sound applications.

As a balancer, it converts unbalanced lines from CD players, tape decks, etc. to balanced for long cable runs.

Each channel features:
  • XLR and 1/4" inputs (accepts TRS or TS unbalanced)
  • Ground-lift button
  • Polarity reverse button (Channel 2 only)
  • Whirlwind's own TRSP-600 transformers ensure flat frequency response and low distortion.

Model #: ISO-2
Frequency Response: 20Hz-20kHz ±0.5dB at +10dBm input
Maximum Input Level: +28dBm
Input Impedance: 600 Ohms
Output Impedance: 600 Ohms



ISO-8 LINE LEVEL ISOLATOR and BALANCER


Click Here For Larger Size Picture ISO-8
Click Here For Larger Size Picture ISO-8Q

Sometimes a ground lift isn't enough to do the job. The ISO-8 is a valuable part of systems where different pieces of gear are connected across long lines.

Many of our customers use it to isolate drive lines to on-stage power amps. The perfect hum fighter in field broadcast or live sound applications, the ISO-8 provides eight channels of high-quality line level isolation to eliminate hum and buzz from interacting gear.

Unbalanced outputs are an invitation to system noise. The ISO-8 provides both balancing and isolation to stop noise at the source.

Each channel features a ground-lift switch, and our own TRSP-600 transformers ensure flat frequency response and low distortion. It's handy to keep an ISO-8 "in the rack" for emergencies.

Model #s: ISO-8 (XLR Connections)
ISO-8Q (1/4" TRS Connections)

Frequency Response: 20Hz-20kHz ±0.5dB at +10dBm input
Maximum Input Level: +28dBm
Input Impedance: 600 Ohms
Output Impedance: 600 Ohms


IMP PAD


Input a line signal into a mic pre or match levels between two pieces of gear with these precision in-line H-pads.

Available in 10, 20, 30, and 40dB attenuation versions, a set of IMP PADs is a necessity for every complete audio toolkit.

Model #s:
IMPAD10
IMPAD20
IMPAD30
IMPAD40

Input Impedance (3-pin female XLR): 1k Ohms
Output Impedance (3-pin male XLR): 150 Ohms


PHASE REVERSE


The phase reverse offers a temporary solution to fix a miswired mic or cable. This female-to-male XLR 3-pin inline device reverses the connection of Pins 2 and 3 between the connectors, which flips the polarity of a balanced audio signal.

Model # - IMPHR


LIFTER


Ideal for troubleshooting ground problems, this female-to-male XLR 3-pin inline device disconnects pin 1 between the connectors. It isolates the ground of a balanced audio signal without requiring you to cut the cable's shield wire.

Model # - LIFTER


LITTLE IMP


Some mixers have 1/4", unbalanced inputs designed for high impedance mics and won't accept standard balanced, low impedance microphones.

This inline transformer with female XLR - 1/4" TS plug is the solution for making that connection.

Model # - LTLIMP


SESCOM IL-19
LINE LEVEL ISOLATION TRANSFORMER


This is a compact transformer in an XLR male/female tube for quick fix line isolation. The shield is lifted from input to output.

Model # - IL-19


AES/EBU
DIGITAL AUDIO ADAPTERS


The Canare BCJ-XJ-TRB (XLR-F to BNC) and BCJ-XP-TRB (XLR-M to BNC) adapters are a cost-effective solution for long cable runs over coaxial cable as opposed to the attenuation of twisted pair at digital frequencies.

The adapters provide impedance matching between 75 Ohms and 110 Ohms, electrical isolation, transition of balanced/unbalanced circuit, and reduction of hum and noise.


PYROBOX
PYROTECHNIC NETWORK EXPANDER


The Whirlwind PYROBOX is a specially designed and built interface for distributing signals in professional computer controlled fireworks displays.

The PYROBOX expands the number of firing modules that may be connected to the system control network. Features include:

  • Heavy duty extruded aluminum box.

  • Reversed gender connections from normal audio splitters, the PYROBOX has 1 male XLR in and 5 female XLR outs - lessens the possibility of accidentally shorting any of the outputs.

  • Gold plated Neutrik connectors and hand built with 16GA wire.

  • Custom configurations available.