User:Rando/Gain Clone Notes
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LM3886TF based gainclone amp
- swap out audio receiver for car amp thing
- Fest autio streaming with mic, cabinet audio, and stream audio
- Found a woofer to test with (tbd)
- Impedance matching circuit
Gainclones are a DIY version of a $3000 audio system called the GainCard.
NGALAC possesses a LM3886TF based dual supply amp which requires a split rail +28/-28 DC supply
Example DIY circuits which are easy to build with clear instructions
DIY PSU price is very high, will compare to purchase options
Using computer PSU may be possible after boosting +/-12 to +/-28, however, current on -12V line may not be enough to rate maximum wattage
| Qty | Short Name | Price | Part | Link | Part Total |
|---|---|---|---|---|---|
| 1 | Transformer Dual 28V secondaries, 4.6A Max current | $28.00 | VPS56-2300 | Digikey | $28.00 |
| 16 | Diode | $1.00 | MUR860 | Digikey | $16.00 |
| 4 | Linear Voltage Regulator | $2.10 | LM338T | Digikey | $9.00 |
| 8 | Rectifier Diode | $0.20 | LM4002 | Digikey | $1.60 |
| 4 | 1200uF Radial Aluminum Electrolytic Caps | $1.00 - $6.00 (depending on current) | EEU-FS1J102B | Digikey | $24.00 |
| * | Various Caps and Resistors (1W) | $10.00 | * | * | $10.00 |
| Total | $95.00 | ||||