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
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.
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".
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
Woofer - 1kHz Full Power into 4Ω
Tweeter - 10kHz into 4Ω
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 transformer = 12-0-12Vac
Supply Rails = +/- 16Vdc
= 5.0" X 2.0" (127mm x 50mm)
Double Sided | FR4
BiAmp is one channel and is supplied
Unassembled. Two kits are required
complete the amplifier, the following are
1) a power transformer, filter capacitors
and bridge rectifier
2) a heatsink for the TDA2030A and TDA2050
3) a metal case and the necessary connectors
the BiAmp Hummingbird