RADIAL BOITE DIRECTE PASSIVE POUR BASS OU KEYS SB-2 PASSIVE
The Radial SB-2 Passive, perfect for your basses and keyboards, is a compact passive direct box. It houses an Eclipse ET-DB3 transformer and a -15 dB pad.
Why It's a Good Choice
The Radial SB-2 Passive is a direct box that excels through its simplicity and efficiency. Designed for basses and keyboards, it reduces ground-loop hum and buzz, with a warm, vintage-style sound. Its rugged 14-gauge steel construction makes it a durable choice; the manufacturer does note, however, that it is not intended for professional rentals or touring.
Its Eclipse ET-DB3 transformer, with a 12:1 ratio, matches impedance, balances the signal and isolates the input from the output. Fully passive, it works without a battery or phantom power. A -15 dB pad handles high-output instruments such as active basses and digital pianos, and a merge function sums a stereo signal to mono to save PA inputs.
Who Is It For?
- Bassists looking for a reliable passive solution
- Keyboardists who want to improve their live sound
- Sound technicians in need of a rugged, effective DI
Key Features
- 1/4" input and thru output to feed the on-stage amp
- XLR output wired to the AES standard, pin 2 hot
- Ground lift switch that disconnects pin 1
- Warm, vintage-style sound, natural compression at high levels
- Stores in the instrument case
Specifications
| Circuit | Passive, transformer based |
|---|---|
| Transformer | Eclipse ET-DB3, 12:1 ratio |
| Channels | 1 |
| Dynamic range | 115 dB |
| Total harmonic distortion | 0.005% at 1 kHz |
| Phase deviation | 3° at 100 Hz; 8° at 50 Hz |
| Input impedance | 140 kΩ, unbalanced |
| Output impedance | 1 kΩ, balanced |
| Maximum input level | +20 dB |
| Pad | -15 dB |
| Connectors | 1/4" input, XLR output |
| Enclosure | 14-gauge steel |
| Dimensions | 114 x 47 x 34 mm (4.5 x 1.85 x 1.35 in) |
| Weight | 250 g (0.55 lb) |
| Power | None (passive) |
| Operating conditions | Dry locations only, 5 °C to 40 °C |
| Warranty | Radial, 3 years, transferable |
Frequently Asked Questions
- Does the SB-2 Passive need a battery or phantom power?
- No. Its passive circuit relies on a transformer, so it requires neither a battery nor phantom power.
- Can a stereo keyboard be plugged into it?
- Yes. The merge function combines both sides into a mono signal. The unit remains a single-channel device, however.
- How long can the XLR cable be?
- Radial recommends about 30 m (100 ft) with a passive bass; with a keyboard, the run can reach 100 m (300 ft).
- Is it suitable for an acoustic guitar?
- Yes. According to Radial, it smooths peaks and adds warmth, in a format that is convenient for travel.
Avis clients
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