JohnAudioTech

@UC8SPQG7er2RJhz4E8xvFEtw - 65.9K subscribers

I enjoy electronics, building DIY projects and repairing things. Most videos will be electronics related, but I will toss in something random here or there. Enjoy!

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Pushing the UTC TDA2050L to the limits = unhappiness

Pushing the UTC TDA2050L to the limits = unhappiness JohnAudioTech

4.6K views - 2 weeks ago

Super barrier rectifier diode test

Super barrier rectifier diode test JohnAudioTech

2.8K views - 3 weeks ago

Aiyima S4000 powered speaker review

Aiyima S4000 powered speaker review JohnAudioTech

3.1K views - 1 month ago

Radio Shack STA-450 receiver on the analyzer

Radio Shack STA-450 receiver on the analyzer JohnAudioTech

1.9K views - 1 month ago

uPC1238 audio amplifier IC tested on the analyzer

uPC1238 audio amplifier IC tested on the analyzer JohnAudioTech

2.9K views - 1 month ago

Radio Shack MPA 46 35 watt PA amplifier on the analyzer

Radio Shack MPA 46 35 watt PA amplifier on the analyzer JohnAudioTech

2.5K views - 1 month ago

MOSFET substitution in linear audio amplifiers

MOSFET substitution in linear audio amplifiers JohnAudioTech

2.8K views - 1 month ago

Experimenting with amplifier bias setting

Experimenting with amplifier bias setting JohnAudioTech

5.1K views - 1 month ago

A simple fix gives these speakers up to 5dB more bass!

A simple fix gives these speakers up to 5dB more bass! JohnAudioTech

4.7K views - 3 months ago

Trying random output transistors in an amplifier to see what happens

Trying random output transistors in an amplifier to see what happens JohnAudioTech

8.4K views - 3 months ago

Rockford Fosgate P400-2 amplifier repair

Rockford Fosgate P400-2 amplifier repair JohnAudioTech

2.7K views - 3 months ago

Fnirsi IPS3608 power supply review - serious issues

Fnirsi IPS3608 power supply review - serious issues JohnAudioTech

6.6K views - 3 months ago

Subwoofer active filter with bass boost DIY

Subwoofer active filter with bass boost DIY JohnAudioTech

3.2K views - 4 months ago

JAT501 optimal class AB bias & Class A, 2 Ohm operation

JAT501 optimal class AB bias & Class A, 2 Ohm operation JohnAudioTech

3K views - 4 months ago

Aiyima P600 new bookshelf speaker review

Aiyima P600 new bookshelf speaker review JohnAudioTech

5.7K views - 4 months ago

Ampapa D1 amplifier tested on the audio analyzer

Ampapa D1 amplifier tested on the audio analyzer JohnAudioTech

10.4K views - 5 months ago

Sealed vs Ported speakers and selecting the bass driver

Sealed vs Ported speakers and selecting the bass driver JohnAudioTech

2.4K views - 5 months ago

Building a small subwoofer out of acrylic

Building a small subwoofer out of acrylic JohnAudioTech

3.2K views - 5 months ago

Subwoofer amplifier repair - BIC Venturi V1020

Subwoofer amplifier repair - BIC Venturi V1020 JohnAudioTech

6.5K views - 5 months ago

Fosi Audio P4 preamplifier on the analyzer

Fosi Audio P4 preamplifier on the analyzer JohnAudioTech

7.7K views - 6 months ago

Modding the Realistic SA-150 stereo amplifier

Modding the Realistic SA-150 stereo amplifier JohnAudioTech

6K views - 6 months ago

Realistic SA-150 amplifier tested on the audio analyzer

Realistic SA-150 amplifier tested on the audio analyzer JohnAudioTech

9.6K views - 6 months ago

Distribution transformer powered tesla coil demo

Distribution transformer powered tesla coil demo JohnAudioTech

1.4K views - 7 months ago

Modding the Fosi Audio SP601 speaker for better sound quality

Modding the Fosi Audio SP601 speaker for better sound quality JohnAudioTech

3.3K views - 7 months ago

Fosi Audio SP601 speaker review

Fosi Audio SP601 speaker review JohnAudioTech

4.9K views - 7 months ago

My favorite audio amplifier ICs 2025 (linear)

My favorite audio amplifier ICs 2025 (linear) JohnAudioTech

9K views - 7 months ago

Building a binaural field recording microphone

Building a binaural field recording microphone JohnAudioTech

1.6K views - 7 months ago

DIY speaker project finally complete

DIY speaker project finally complete JohnAudioTech

3.9K views - 7 months ago

Aiyima S700 powered speakers review / test on the analyzer

Aiyima S700 powered speakers review / test on the analyzer JohnAudioTech

9.4K views - 8 months ago

Installing new siding - LP Smart Side panels - JAT XTRA content

Installing new siding - LP Smart Side panels - JAT XTRA content JohnAudioTech

1.1K views - 8 months ago

Ultra Efficient LED - 231 Lumens per Watt!

Ultra Efficient LED - 231 Lumens per Watt! JohnAudioTech

2.3K views - 9 months ago

Power circuit for electret condenser microphones

Power circuit for electret condenser microphones JohnAudioTech

3.6K views - 9 months ago

Electret condenser microphone capsules - high sensitivity / low noise

Electret condenser microphone capsules - high sensitivity / low noise JohnAudioTech

4K views - 9 months ago

TDA7294 on the audio analyzer

TDA7294 on the audio analyzer JohnAudioTech

5.3K views - 10 months ago

TDA7294 amplifier build - A comedy of ERRORS !

TDA7294 amplifier build - A comedy of ERRORS ! JohnAudioTech

6.2K views - 10 months ago

JLH class A amplifier clone tested on the analyzer

JLH class A amplifier clone tested on the analyzer JohnAudioTech

12.9K views - 10 months ago

JAT EZ amplifier on the audio analyzer REPOST

JAT EZ amplifier on the audio analyzer REPOST JohnAudioTech

1.9K views - 11 months ago

Budget music player tested on the audio analyzer

Budget music player tested on the audio analyzer JohnAudioTech

6.5K views - 11 months ago

JAT EZ AMP project - make working again

JAT EZ AMP project - make working again JohnAudioTech

2.6K views - 11 months ago

JAT801 amplifier project revival & audio analyzer test

JAT801 amplifier project revival & audio analyzer test JohnAudioTech

4.2K views - 1 year ago

LM3886 vs TDA7293 audio analyzer results

LM3886 vs TDA7293 audio analyzer results JohnAudioTech

15.4K views - 1 year ago

TDA7850 4 channel amplifier on the audio analyzer

TDA7850 4 channel amplifier on the audio analyzer JohnAudioTech

4.2K views - 1 year ago

SONY STR-DG510 AV receiver - diagnosing weak/dead channels

SONY STR-DG510 AV receiver - diagnosing weak/dead channels JohnAudioTech

2.9K views - 1 year ago

Tube preamplifier on the QA403 audio analyzer

Tube preamplifier on the QA403 audio analyzer JohnAudioTech

8.4K views - 1 year ago

TDA7264 stereo amplifier on the analyzer

TDA7264 stereo amplifier on the analyzer JohnAudioTech

3.1K views - 1 year ago

TDA1517 stereo amplifier IC measured on the audio analyzer

TDA1517 stereo amplifier IC measured on the audio analyzer JohnAudioTech

4.1K views - 1 year ago

LM380 audio amplifier tested on the QA403 analyzer

LM380 audio amplifier tested on the QA403 analyzer JohnAudioTech

4.3K views - 1 year ago

Quick repair on DIY amplifier

Quick repair on DIY amplifier JohnAudioTech

2.1K views - 1 year ago

Douk Audio A5 stereo amplifier review

Douk Audio A5 stereo amplifier review JohnAudioTech

18.3K views - 1 year ago

Generating Xrays with exercise bike & light bulb - FINIRSi radiation detector GC-01

Generating Xrays with exercise bike & light bulb - FINIRSi radiation detector GC-01 JohnAudioTech

2.8K views - 1 year ago

TDA7267 amplifier on the audio analyzer

TDA7267 amplifier on the audio analyzer JohnAudioTech

5K views - 1 year ago

Phono preamp review - Fosi Audio BOX X5

Phono preamp review - Fosi Audio BOX X5 JohnAudioTech

17.2K views - 1 year ago

Electrical & measurement phenomenon explained

Electrical & measurement phenomenon explained JohnAudioTech

2.7K views - 1 year ago

LM386 chip amp on the audio analyzer

LM386 chip amp on the audio analyzer JohnAudioTech

8K views - 1 year ago

Counterfeit TDA2050 performance test - interesting results!

Counterfeit TDA2050 performance test - interesting results! JohnAudioTech

9.8K views - 1 year ago

TDA2050 real vs. fake amplifier chip on the analyzer

TDA2050 real vs. fake amplifier chip on the analyzer JohnAudioTech

22.8K views - 1 year ago

DIY LED stroboscope and transistor speed

DIY LED stroboscope and transistor speed JohnAudioTech

3.2K views - 1 year ago

Stackstone turntable review. Internal speakers with good sound?

Stackstone turntable review. Internal speakers with good sound? JohnAudioTech

1.8K views - 1 year ago

TDA7377 $10 stereo amplifier board on the audio analyzer

TDA7377 $10 stereo amplifier board on the audio analyzer JohnAudioTech

6.6K views - 1 year ago

Night vision camera review - FNIRSi NVS 40

Night vision camera review - FNIRSi NVS 40 JohnAudioTech

6.2K views - 1 year ago