VO-B1c
Technical Highlights
- RMS-Leistung 60 W, Impedanz 4 Ohm, Wirkungsgrad 110 dB SPL.
- Frequenzbereich 3,5 kHz–20 kHz, Spitzenleistung 100 W, 25 mm Größe.
- Aluminium-Horn mit Schutzgitter, Einbaudurchmesser 59 mm, Einbautiefe 38 mm.
- More technical details
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VO-B1c by DD Audio
DD Audio VO-B1c – PA-Tweeter for uncompromising level stability
The VO-B1c from the Voice Optimized series is not an ordinary tweeter for everyday installation, but a PA-tweeter in classic bullet design, designed for high efficiency rather than maximum detail. I use such PA-tweeters where level stability and efficiency are crucial – for example, in combination with powerful midrange drivers, where a normal dome tweeter would quickly reach its limits.
Technical Highlights
- Titanium diaphragm with neodymium drive: The lightweight, torsion-resistant titanium dome combined with the more powerful neodymium magnet ensures higher sensitivity – the tweeter plays significantly louder at the same amplifier power than comparable ferrite models.
- Revised waveguide: The new horn improves dispersion outside the main axis, important for a more uniform sound image throughout the vehicle interior rather than just directly on axis.
- 110 dB efficiency: A high SPL value means that the tweeter plays loudly even with little power – practical when you want it to keep up with a powerful bass range in terms of level.
- Cast aluminum horn with protective grille: The integrated mesh grille protects the sensitive titanium diaphragm from mechanical damage without compromising the aesthetics.
Technical Data at a Glance
- RMS power: 60 W
- Peak power: 100 W
- Impedance: 4 Ohm (Single Voice Coil)
- Efficiency: 110 dB SPL
- Frequency range: 3.5 kHz – 20 kHz
- Nominal size: 1"
- Installation diameter: 59 mm
- Installation depth: 38 mm
Application Area & Compatibility
The VO-B1c is suitable for systems where the high-frequency range must keep up with high efficiency and level stability – typically in PA-oriented or SPL-focused setups, but also in demanding SQ systems with powerful midrange. For a clean separation, it is worth combining it with a DSP to ensure the crossover frequency matches the rest of the system.
What to Consider When Installing
- Observe crossover frequency: PA-tweeters like this typically do not tolerate too low a crossover – stick to a high-pass above the specified frequency range to avoid overloading the titanium diaphragm.
- Check installation depth: With a 38 mm installation depth, the VO-B1c fits in most, but not all A-pillars or doorboards – measure briefly before cuts.
- Connect polarity correctly: Especially with high efficiency, incorrect polarity can quickly lead to audible phase cancellations in the crossover range to the midrange driver.
If you are looking for a tweeter that still delivers good levels even at low amplifier power and looks great, the VO-B1c is a good choice. However, for very subtle, pure hi-fi applications without SPL demands, there are finer resolving alternatives in the dome segment.