HiWave develops new wireless speaker platform
- HiWave offers a Bluetooth wireless speaker demonstrator that runs for 100 hours at normal levels from a single charge cycle.
HiWave Technologies, a provider of innovative audio amplifier ICs, full-frequency range speaker drivers, and next-generation haptic-touch devices, has developed a new product called Endfire. Endfire is an efficient wireless stereo speaker reference platform that delivers 100 hours of high-quality audio playback at typical listening levels.
Endfire uses Bluetooth to pair with tablet PCs, smartphones, and laptops and outputs 30-W audio from its two full-frequency range, wide-dispersion HiBM36S12-8 BMR speakers. These are combined with HiWave’s DyadBA3 module, which supports both AVRCP and A2DP Bluetooth audio profiles and uses the HiAS2002 stereo amplifier. The system is powered by three 2,200-mAh Li-ion batteries and charged via a micro-USB connection.
The reference platform consumes less than 300 mW during typical playback and its onboard HiWave HiAS2002 (Audium) amplifier can switch voltage rails to reproduce peaks without any detectable artefacts. The system automatically enters standby when not in use and waking. Device pairing and battery check are controlled via Endfire’s volume control dial.
The HiAS2002 amplifier IC and BMR speaker drivers are available from HiWave. Visit www.hiwave.com for more information.
Akitika’s complete stereo power amplifier kit
- Akitika’s GT-101 contains everything you need to build a stereo power amplifier.
Akitika’s GT-101 is a complete stereo power amplifier kit that supplies everything but the solder. It produces greater than 50-W RMS per channel into 8 O with low distortion and low noise. The kit includes a toroidal power transformer, film, COG capacitors, metal film resistors, heavy-duty extruded aluminum heatsinks, isolated input jacks, double sided FR-4 PC boards, five-way speaker binding posts, and a fully regulated power supply. It’s contained in a black custom chassis. The component quality is characteristic of high-end equipment, at a cost of a little more than $300. Akitika’s GT-101 stereo power amplifier sounds better because you build it. Visit www.akitika.com for more information.
Caption: Akitika’s GT-101 contains everything you need to build a stereo power amplifier.
Wolfson’s newest DAC delivers great sound
Wolfson Microelectronics has introduced its latest stereo digital-to-analog converter (DAC), the WM8533, which provides audio performance in a small package for a wide range of consumer electronic applications.
The WM8533 delivers 106-dB signal-to-noise ratio (SNR) and features an integral charge pump, a software control interface, and offers 2 Vrms line driver outputs where a 3.3-V power supply rail is used. The WM8533 is suitable for a wide range of consumer digital audio applications including set top boxes, digital televisions, DVD players, and games consoles.
The WM8533 also features ground-referenced outputs and a DC servo to eliminate the need for line driving coupling capacitors and effectively eliminate pops and clicks at power on. The device also supports all common audio sampling rates between 8 and 192 kHz. For more information, visit www.wolfsonmicro.com.
