michael chuaFebruary 5, 2022Electronics, Projects
| This page is dedicated to audio electronics. I developed these products to enhance your audio experience. No oscilloscope is necessary to get them working. Just a steady hand and a good soldering station. They are generally offered as PCBs only. A parts list and schematic are included with the purchase.
Power Amplifiers
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 TDA7293MOD
A high power version using two TDA7293 in Modular configuration.
Ready for Purchase
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 Dual LM3886TF
This pcb has two independent LM3886TF on board. Very compact. Only 4.3″ x 1.6″
Ready for Purchase
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 STK4241mk2
A 2-Channel (120W+120W) power amplifier using a STK4241mk2. Easy to build.
Ready for Purchase
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A 3-Channel (50W+50W+50W) power amplifier using a STK4197mk2. Easy to build.
(pending prototype) |
2 Channels of 200W+200W into 4 ohms using Toshiba 2SC5200/2SA1943 power transistors.
(pending prototype) |
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| Crossovers & PreAmps |
 BassEQ
Stereo PreAmp with Bass EQ
Bass Restoration for 2-way speaker
Ready for Purchase
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 XO2W24
24dB/oct Linkwitz-Riley
2-Way Crossover with Tweeter Time-Alignment
Ready for Purchase
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 XO2W-LPDELAY
24dB/oct Linkwitz-Riley
2-Way Crossover to Time-Aligned Horns
(prototype in production) |
 XO2DELAYSW
24dB/oct Linkwitz-Riley
2-Way Crossover with Switchable Delay
(prototype in production)
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| Power Supply Units |
 PSU15REG
+/- 15V Regulated Power Supply
Ready for Purchase
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Power supply board for power amplifiers like the TDA7293MOD and others. Fits 6pcs of 4,700uF/63V caps for a total of 28,200uF.
(available soon) |
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Professional Series
Power Amplifiers |
 TDA7293Pro
A feature laden TDA7293 amplifier for professional applications and HiFi.
Ready for Purchase
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A TDA2030A amplifier supported by current transistors for higher power output. Ideal for Active Speakers.
(available soon) |
 TDA2050Pro
A TDA2050 chip amp for Active Speakers. Balanced Input with 6,600uF of PSU caps.
Ready for Purchase
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 BiAmpPro
All-In-One pcb for Bi-Amping. Built-in crossovers, power amplifiers and power supply. |
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| Crossover, Speaker Protection & others |
 XO24Pro
24dB/oct Linkwitz-Riley
Modular 2-Way Crossover to Time-Align Horns
Ready for Purchase
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 DCPRO24
Loudspeaker DC Protection. Powered by 24Vdc from the PSU15REG or by power amplifier +V rail.
Ready for Purchase
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