Radial StageBug SB-4 | ไดเร็คบ๊อกซ์ Piezo DI

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StageBug-SB-4
฿3,600
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     ไดเร็คบ๊อก Radial StageBug SB4, Active DI optimized for piezo transducers, Smoothes out peaks, eliminates squawk, High pass filter eliminates resonance, Ultra compact to fit in your guitar case

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Tel: 02-991-8600086-514-5515

Radial StageBug SB-4 ไดเร็คบ๊อกซ์ Piezo DI

     The Radial StageBug SB-4 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 without compromising the tone or frequency response.

     The design begins with a ¼” input for the instrument pickup. Unlike typical direct boxes that have a 1meg-ohm input impedance, the SB-4 features a very high 5meg-ohm impedance that smoothes out troublesome peaks that give piezos a bad name. 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 100 meters without loss, delivering spectacular linearity and low distortion throughout the audio range.

     To help eliminate feedback on stage, the SB-4 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. 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. One simply connects, turns on the phantom power and plays!

     These features combined with the compact size make the StageBug SB-4 the perfect companion for orchestral artists, blue grass players and pop string quartets that need to turn it up when in concert.

Features:

  • Active direct box optimized for piezo-electric acoustic contact pickups
  • Highpass filter removes boxy boom from acoustic instrument sound
  • 180-degree phase switch tames hot spots and feedback
  • Runs on 48V phantom power (no batteries needed)
  • Compact design fits in virtually any instrument case

 

Specifications  
Audio circuit type: Piezo optimized active buffer
Frequency response: 20Hz to 20kHz
Dynamic range: 100dB
Gain: +2dB
Total harmonic distortion: <0.006%
Intermodulation Distortion: <0.01%
Phase Deviation: 10° @ 50Hz
Input Impedance: 5Meg Ohms
Output Impedance: 330 Ohms
Equivalent Input Noise: -101dBu
Noise: -97dBu
Maximum Input: +4dBu
Features
180° polarity reverse, Ground lift, HPF
Input Connectors: 1/4"
Output Connectors: XLR
General
Construction: 16 gauge steel chassis & outer shell
Size (L x W x D): 4.5" x 1,85" x 1.35" (114mm x 47mm x 34mm)
Weight: 0.55 lbs (250 grams)
Shipping size (L x W x D): 8" x 5" x 3" (203mm x 127mm x 76mm)
Shipping weight: 0.8 lbs (365 grams)
Power: 48V phantom power, 5mA
Conditions: For use in dry locations only between 5°C and 40°C
ข้อมูลเพิ่มเติม
แบรนด์ (Brands)Radial
รุ่นStageBug
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