Radial Engineering StageBug SB-4 Piezo DI

Radial Engineering StageBug SB-4 Piezo DI

Radial Engineering StageBug SB-4 Piezo DI

B&H # RASB4PIEZO MFR # R800 0140
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Radial Engineering SB-4 overview

  • 1Description

The StageBug SB-4 Piezo DI from Radial Engineering is a compact active direct box that has been optimized for use with piezo transducers. This enables violin, dobro, mandolin, cello, upright bass, and other instruments that are best amplified using a piezo to be connected to a mixing board or recording device.

This unit features a 1/4" input for the instrument pickup and a 10 MΩ impedance that smoothes out troublesome peaks. The higher impedance also broadens the frequency response for a more natural and pleasing sound. The active circuit performs the high-to-low impedance conversion and balances the signal to enable long runs upwards to 328’ (100m) without loss, delivering linearity and low distortion throughout the audio range.

To help eliminate feedback on stage, it is equipped with a high-pass filter and 180° polarity reverse switch. The high pass filter eliminates excessive bottom end, which in turn reduces resonance that can cause the top of the instrument to vibrate. The 180° polarity reverse helps reduce acoustic hot spots on stage by changing the phase relationship between the PA system and room acoustics, which can combine at certain frequencies to create peaks. Reversing the polarity eliminates the acoustic peak without resorting to severe equalization which only serves to compromise the natural tone of the instrument. The unit’s connections include an AUX out for a stage amplifier plus a standard XLR output to feed the PA. Power is derived from the console's 48V phantom, thus eliminating the need for batteries or external supply.

These features combined with the compact size makes this unit a suitable companion for orchestral artists, blue grass players, and pop string quartets that need to turn it up when in concert.

Active DI optimized for piezo transducers
Smoothes out peaks, eliminates squawk
High pass filter eliminates resonance
Ultra compact to fit in your guitar case
Made in Canada
UPC: 676101040667
In the Box
Radial Engineering StageBug SB-4 Piezo DI
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    Radial Engineering SB-4 specs

    Circuit Type Piezo optimized active buffer
    Frequency Response 20 Hz to 20 kHz
    Total Harmonic Distortion 0.006%
    Dynamic Range 100 dB
    Input Impedance 5 MΩ
    Maximum Input +4 dBu
    Gain 2 dB
    Output Impedance 330 Ω
    Equivalent Input Noise -101 dBu
    Noise Floor -97 dBu
    Intermodulation Distortion <0.01%
    Deviation Phase: 10° @ 50 Hz
    Switches High Pass Filter, Phase, Ground Lift
    Low-Cut Filter 150 Hz
    Filter Slope: 6 dB/octave
    Instrument Input 1/4" buffered with piezo optimized load
    Auxiliary Output 1/4" buffered to drive guitar effects, amplifier, or tuner
    Balanced Output Pin-1 ground, pin-2 (+), pin-3 (-)
    Others Polarity Reverse: 180°
    Ground Lift: Soft lift with 100 Ω to ground
    Construction 16 gauge steel chassis & outer shell
    Finish Baked enamel
    Power 48 V phantom power
    Dimensions (L x W x D) 4.50 x 1.85 x 1.35" (114.00 x 47.00 x 34.00 mm)
    Weight 8.80 oz (249.48 g)
    Packaging Info
    Package Weight 0.6 lb
    Box Dimensions (LxWxH) 8.0 x 4.7 x 1.6"

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