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Refer: Silicon Chip Magazine November and December, 2012.
This DIY high performance amplifier boasts 250WRMS output into 4 ohms, 150W into 8 ohms and can be bridged with a second kit for 450W into 8 ohms. Not only does it output high-quality sound, it is also rugged and reliable with all sorts of protection built in. Class-D amplifiers are also far more efficient and generate much less heat than linear Class-A, B and AB designs.
Features:
* High efficiency
* High power
* Low distortion and noise
* Bridging option for driving 8-ohm load with two modules
* Over-current protection
• Over-temperature protection
* Under-voltage switch-off
* Over-voltage switch-off
* DC offset protection
* Fault indicator
* Amplifier running indicator
* Optional speaker protection module (see KC-5515)
* Efficiency: Typically 90% at full power for 8 ohm and 83% for 4 ohm
* Input sensitivity: 2VRMS (4 ohm), 2.2VRMS (8 ohm)
* Power requirements: +/- 40 to 60VDC, 50 to 55V nominal (see KC-5517)
Kit supplied with double sided, soldermasked and screen-printed PCB with SMD IC pre-soldered, heatsink, and electronic components.
Note: The surface-mount IC is pre-soldered to avoid frustration
Also available: KC-5515 Stereo Speaker Protector Kit to suit KC-5517 +/- 55V Power Supply Kit to suit
This DIY high performance amplifier boasts 250WRMS output into 4 ohms, 150W into 8 ohms and can be bridged with a second kit for 450W into 8 ohms. Not only does it output high-quality sound, it is also rugged and reliable with all sorts of protection built in. Class-D amplifiers are also far more efficient and generate much less heat than linear Class-A, B and AB designs.
Features:
* High efficiency
* High power
* Low distortion and noise
* Bridging option for driving 8-ohm load with two modules
* Over-current protection
• Over-temperature protection
* Under-voltage switch-off
* Over-voltage switch-off
* DC offset protection
* Fault indicator
* Amplifier running indicator
* Optional speaker protection module (see KC-5515)
* Efficiency: Typically 90% at full power for 8 ohm and 83% for 4 ohm
* Input sensitivity: 2VRMS (4 ohm), 2.2VRMS (8 ohm)
* Power requirements: +/- 40 to 60VDC, 50 to 55V nominal (see KC-5517)
Kit supplied with double sided, soldermasked and screen-printed PCB with SMD IC pre-soldered, heatsink, and electronic components.
Note: The surface-mount IC is pre-soldered to avoid frustration
Also available: KC-5515 Stereo Speaker Protector Kit to suit KC-5517 +/- 55V Power Supply Kit to suit
Assembly required
| Kit Form | Short Form (circuit only) |
| Kit Group | General Projects |
| Difficulty | Detailed |
| Application Field | Audio Amplifier Kit |
| PCB Width | 117mm |
| PCB Length | 167mm |
| Estimated Construction Time | 90min |
| Tools required | Soldering Iron,Flat Head Screwdriver |
| Audio Device | Amplifier |
| Signal Input Level | 2mV |
| Output power | 150W |
| Output impedence range | 8Ω |
| Audio frequency range | 10Hz-10kHz |
| Audio distortion | 0.01% |
| Signal to noise ratio | 103 |
| Audio power supply | 40 to 60VDC, 50 to 55V |
