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 LINE LEVEL ISOLATOR and DUAL LINE 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 or 1/4" input 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 & ISO8Q LINE LEVEL ISOLATOR 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. Available in XLR (ISO-8) or with 1/4" TRS jacks (ISO-8Q). Frequency Response: 20Hz-20kHz ±0.5dB at +10dBm input Maximum Input Level: +28dBm Input Impedance: 600 Ohms Output Impedance: 600 Ohms

IMP PAD 10, 20, 30, 40 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. 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.

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.

LITTLE IMP Some mixers have high impedance inputs that don't work with standard low impedance microphones. This inline impedance-matching transformer is the solution for making that connection.

ISOXL LINE LEVEL ISOLATION TRANSFORMER This is a professional quality compact transformer in an XLR male/female tube for quick fix line isolation. The shield is lifted from input to output. Our ISOXL outperforms the industry leading inline isolation transformer . Give us a call to find out more!