Wolfram formally announced on Tuesday March 31st the pre-order of their latest line of amplifiers – Wolfram Audio Oxygen series. The originally half-bridge based amplifier company is expanding it’s horizons onto the full-bridge market which is gaining traction in today’s industry. Having been on the market for years, full bridge technology amplifiers popularized by Brazilian based companies like Taramps have slowly been spreading into other parts of the world.
“A full bridge uses two half-bridge stages to drive the load differentially. This type of load connection is often referred to as a bridge-tied load (BTL). The full-bridge configuration operates by alternating the conduction path through the load. This allows bidirectional current to flow through the load without the need of a negative supply or a DC-blocking capacitor.
A full-bridge Class D amplifier shares the same advantages of a Class AB BTL amplifier, but adds high power efficiency. The first advantage of BTL amplifiers is that they do not require DC-blocking capacitors on the outputs when operating from a single supply. With a full-bridge amplifier, this offset appears on each side of the load, which means that zero DC current flows at the output. The second advantage they share is that they can achieve twice the output signal swing when compared to a half-bridge amplifier with the same supply voltage because the load is driven differentially. This results in a theoretical 4x increase in maximum output power over a half-bridge amplifier operating from the same supply.”
Source: Maxim Integrated Products, Inc
Wolfram managed to pack a greater than 92% efficiency rating of their 4,000w, 6,000w and 10,000w Class-D monoblocks and a 10v-15.9v operating voltage into their custom tooled heatsinks. All amplifiers will ship with a clipping indicator on the amplifier itself and the bassknob.
- RMS Power @ 1ohm: 4,000W (14.4V, 1KHz)
- RMS Power @ 2ohm: 2,500W (14.4V, 1KHz)
- RMS Power @ 4ohm: 1,500W (14.4V, 1KHz)
- Dimensions: 12.6″ L x 8″ W x 2.5″ H
- Single 1/0 Power Input
- RMS Power @ 1ohm: 6,000W (14.4V, 1KHz)
- RMS Power @ 2ohm: 3,500W (14.4V, 1KHz)
- RMS Power @ 4ohm: 2,000W (14.4V, 1KHz)
- Dimensions: 16.15″ L x 8″ W x 2.5″ H
- Dual 1/0 Power Input
- RMS Power @ 1ohm: 10,000W (14.4V, 1KHz)
- RMS Power @ 2ohm: 6,500W (14.4V, 1KHz)
- RMS Power @ 4ohm: 4,000W (14.4V, 1KHz)
- Dimensions: 21.25″ L x 8″ W x 2.5″ H
- Dual 1/0 Power Input
Wolfram’s Oxygen series amplifiers are due to hit the market at end of July 2020, but I expect to see a majority, if not all, to be pre-purchased prior to reaching the states.