This BiAmp module is the basic version of the BiAmpPro. This is for users that prefer to use their own power supply capacitors and have no need for Balanced Input. As such, the Op Amp and the voltage regulators are omitted.

As before, the crossover is asymmetric with the corner frequency set at 2.5kHz. High pass to tweeter is at 18dB/oct whereas to the woofer is 12dB/oct.

What is unique about this crossover is that the high and low pass filters are part of the power amplifiers. No op amps are used to achieve this crossover. SGS Thomson, the manufacturer of the TDA2030A and TDA2050 chip amps used in this BiAmp module, calls this crossover "Active Power Speakers".

In this BiAmp configuration, a TDA2030A is used for the tweeter. For the woofer, two TDA2050 in Bridged mode are used for higher power. Note that the woofer must be 8Ω, not 4Ω. That's due to the nature of Mono Bridge because each TDA2050 will be seeing 4Ω.

Woofer - 1kHz Full Power into 4Ω

Tweeter - 10kHz into 4Ω

BiAmp Specifications

Tweeter Power Output = 12W into 4Ω
Woofer Power Output = 24W into 8Ω (mono-bridge)
Woofer Input Sensitivity (@ 1kHz before Clip) 0.7V RMS into 8Ω (UnBal)
Voltage Gain = 27dB

Power Supply Specs
Power transformer = 12-0-12Vac
Supply Rails = +/- 16Vdc

PCB = 5.0" X 2.0" (127mm x 50mm)
Double Sided | FR4

The BiAmp is one channel and is supplied Unassembled. Two kits are required for stereo.

To complete the amplifier, the following are needed
1) a power transformer, filter capacitors and bridge rectifier
2) a heatsink for the TDA2030A and TDA2050 chip amps
3) a metal case and the necessary connectors

Auditioning the BiAmp Hummingbird

US$ 35.90

US$ 18.50

$40 Minimum Order on Check Out
Shipping info

60 Downes Street | Calais | ME 04619 | USA