Transformers & Isolators

The TR-1A is a high-performance isolation transformer for balanced mono audio signals. It completely isolates devices to eliminate hum, ground loops and DC offsets that can degrade the audio quality.

• S/N Ratio — 83dB @+4dBu, 1kHz.
• External Input & Output Ground Terminals.
• Grounding Options — DIP–switch selectable.
• Passive — No power required.
• Compact Kramer TOOLS™ — 3 units can be rack mounted side–by–side in a 1U rack space with the recommended rack adapter

Description

Musicians and Sound Engineers once swore by those old bright blue DI boxes from Sescom. So by customer demand, Sescom brings back its famous DI Box enlisting our vast knowledge of transformers and developed through countless prototypes actually tested in the real world. This is the simplest and best sound-by-design direct box for connecting a high-impedance, line level, unbalanced output signal to a low-impedance microphone level balanced input via XLR. Due to it's combo jack input and 3-way attenuation, the DIPRO can accept not just unbalanced instrument level signals, but also unbalanced and balanced line level signals and convert them to mic level.

The Sescom DIPRO is perfect for live sound applications, electronic musical instruments or connecting amplifier line level outputs to balanced mixing console inputs. Sescom has actually designed this unit to be single channel... why pay for two channels if you don't need them. Use two units for stereo applications, which would allow you to run effects through one channel while the other channel can remain effect free... if you dare! Heavy duty construction with a black anodized extruded aluminum housing. Introduce your sound to your mixing board/studio-preamp without the colored sound common to other DI boxes. Get the Sescom SES-DIPRO and hear the difference! Our unique high-fidelity circuitry provides the most accurate and true sound your device produces!

Features

• Passive Operation
• High-Fidelity Circuitry
• Balanced/Unbalanced Sensing at Input
• Ground Lift Switch
• Phase Select Switch
• 3-Position Attenuation Switch
• Heavy Duty Construction
• Loop Out Jack

Specifications

• Input Connectors: 1 x 1/4"/XLR Combo Jack
• Output Connectors: 1 x Neutrik XLR-M Mic-Level (Balanced) 1 x 1/4" Loop Out (TS or TRS)
• Input Impedance: 66kΩ @ -20 dB / 75kΩ @ -40 dB / 800kΩ @ -60 dB
• Output Impedance: 1kΩ
• Frequency Response: 20 Hz to 20 kHz +/- 0.25 dB
• Total Harmonic Distortion at 20 Hz: 0.028 @ -20 bB / 0.46 @ -40 dB / 0.34 @ -60 dB
• Linear Performance: < -1 dBr deviation up to 20kHz
• Controls: 3-position Attenuation Switch: -20 dB, -40 dB, -60 dB / Phase Select Switch / Ground Lift Switch
• Dimensions (LxWxH): 5.4" x 3.2" x 1.9"
• Weight: 0.66 lbs (300 grams)

Description

100W mono autoformer attenuator-style volume control with key switch and one-gang wall plate. Patented design secures volume settings for critical paging and emergency systems. For single or multiple speaker lines.

Specifications

• Power Rating: 100W
• Attenuation: 3dB per step (33dB total)
• Use With: 25/70/100V speaker line
• Activation: Key
• Volume Positions: 0-10
• Two steps of 6dB each before off
• Termination: Phoenix-style
• Wire Capacity: 14-gauge
• Wall Plate: 1-gang decorator style
• Finish: Stainless Steel & Black
• Fits standard E.O. box (2.125 in. min. depth)

Compliance and Certification

• Made in the U.S.A. with global components
• ETL Listed

A&E Specifications

The volume control shall be Lowell Model No. KL100-DSB with 100W power rating, 3dB per step attenuation, and switch positions 10- Off. It shall feature Phoenix style plug-in screw termination strips for pre-wire with capacity up to 14-gauge. It shall include a one-gang decorator style wall plate with stainless steel and black finish. Volume adjustment shall be controlled by a key.