JohnAudioTech

@UC8SPQG7er2RJhz4E8xvFEtw - 66.3K 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!

Home Videos Live Playlists

Sewer line camera by Sanyipace is useful for general purpose inspection

Sewer line camera by Sanyipace is useful for general purpose inspection JohnAudioTech

812 views - 2 months ago

DC to DC voltage converter test & review

DC to DC voltage converter test & review JohnAudioTech

2.4K views - 2 months ago

Pushing the UTC TDA2050L to the limits = unhappiness

Pushing the UTC TDA2050L to the limits = unhappiness JohnAudioTech

4.9K views - 3 months ago

Super barrier rectifier diode test

Super barrier rectifier diode test JohnAudioTech

2.9K views - 3 months ago

Aiyima S4000 powered speaker review

Aiyima S4000 powered speaker review JohnAudioTech

3.9K views - 3 months ago

Radio Shack STA-450 receiver on the analyzer

Radio Shack STA-450 receiver on the analyzer JohnAudioTech

2K views - 4 months ago

uPC1238 audio amplifier IC tested on the analyzer

uPC1238 audio amplifier IC tested on the analyzer JohnAudioTech

3K views - 4 months ago

Radio Shack MPA 46 35 watt PA amplifier on the analyzer

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

2.7K views - 4 months ago

MOSFET substitution in linear audio amplifiers

MOSFET substitution in linear audio amplifiers JohnAudioTech

3.1K views - 5 months ago

Experimenting with amplifier bias setting

Experimenting with amplifier bias setting JohnAudioTech

5.8K views - 5 months ago

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

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

5.2K views - 6 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

8.6K views - 6 months ago

Rockford Fosgate P400-2 amplifier repair

Rockford Fosgate P400-2 amplifier repair JohnAudioTech

3.3K views - 6 months ago

Fnirsi IPS3608 power supply review - serious issues

Fnirsi IPS3608 power supply review - serious issues JohnAudioTech

8.9K views - 6 months ago

Subwoofer active filter with bass boost DIY

Subwoofer active filter with bass boost DIY JohnAudioTech

3.4K views - 6 months ago

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

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

3.1K views - 7 months ago

Aiyima P600 new bookshelf speaker review

Aiyima P600 new bookshelf speaker review JohnAudioTech

7K views - 7 months ago

Ampapa D1 amplifier tested on the audio analyzer

Ampapa D1 amplifier tested on the audio analyzer JohnAudioTech

12K views - 7 months ago

Sealed vs Ported speakers and selecting the bass driver

Sealed vs Ported speakers and selecting the bass driver JohnAudioTech

2.7K views - 8 months ago

Building a small subwoofer out of acrylic

Building a small subwoofer out of acrylic JohnAudioTech

3.4K views - 8 months ago

Subwoofer amplifier repair - BIC Venturi V1020

Subwoofer amplifier repair - BIC Venturi V1020 JohnAudioTech

7.4K views - 8 months ago

Fosi Audio P4 preamplifier on the analyzer

Fosi Audio P4 preamplifier on the analyzer JohnAudioTech

8.8K views - 9 months ago

Modding the Realistic SA-150 stereo amplifier

Modding the Realistic SA-150 stereo amplifier JohnAudioTech

6.1K views - 9 months ago

Realistic SA-150 amplifier tested on the audio analyzer

Realistic SA-150 amplifier tested on the audio analyzer JohnAudioTech

9.8K views - 9 months ago

Distribution transformer powered tesla coil demo

Distribution transformer powered tesla coil demo JohnAudioTech

1.4K views - 10 months ago

Modding the Fosi Audio SP601 speaker for better sound quality

Modding the Fosi Audio SP601 speaker for better sound quality JohnAudioTech

3.5K views - 10 months ago

Fosi Audio SP601 speaker review

Fosi Audio SP601 speaker review JohnAudioTech

5.4K views - 10 months ago

My favorite audio amplifier ICs 2025 (linear)

My favorite audio amplifier ICs 2025 (linear) JohnAudioTech

9.4K views - 10 months ago

Building a binaural field recording microphone

Building a binaural field recording microphone JohnAudioTech

1.6K views - 10 months ago

DIY speaker project finally complete

DIY speaker project finally complete JohnAudioTech

4K views - 10 months ago

Aiyima S700 powered speakers review / test on the analyzer

Aiyima S700 powered speakers review / test on the analyzer JohnAudioTech

10K views - 11 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 - 11 months ago

Ultra Efficient LED - 231 Lumens per Watt!

Ultra Efficient LED - 231 Lumens per Watt! JohnAudioTech

2.3K views - 1 year ago

Power circuit for electret condenser microphones

Power circuit for electret condenser microphones JohnAudioTech

3.7K views - 1 year ago

Electret condenser microphone capsules - high sensitivity / low noise

Electret condenser microphone capsules - high sensitivity / low noise JohnAudioTech

4.5K views - 1 year ago

TDA7294 on the audio analyzer

TDA7294 on the audio analyzer JohnAudioTech

5.6K views - 1 year ago

TDA7294 amplifier build - A comedy of ERRORS !

TDA7294 amplifier build - A comedy of ERRORS ! JohnAudioTech

6.4K views - 1 year ago

JLH class A amplifier clone tested on the analyzer

JLH class A amplifier clone tested on the analyzer JohnAudioTech

13K views - 1 year ago

JAT EZ amplifier on the audio analyzer REPOST

JAT EZ amplifier on the audio analyzer REPOST JohnAudioTech

1.9K views - 1 year ago

Budget music player tested on the audio analyzer

Budget music player tested on the audio analyzer JohnAudioTech

6.6K views - 1 year ago

JAT EZ AMP project - make working again

JAT EZ AMP project - make working again JohnAudioTech

2.6K views - 1 year 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

17K views - 1 year ago

TDA7850 4 channel amplifier on the audio analyzer

TDA7850 4 channel amplifier on the audio analyzer JohnAudioTech

4.4K views - 1 year ago

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

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

3.1K views - 1 year ago

Tube preamplifier on the QA403 audio analyzer

Tube preamplifier on the QA403 audio analyzer JohnAudioTech

8.6K 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

4.4K 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

19K 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

2.9K 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

18K 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

9.9K views - 1 year ago

TDA2050 real vs. fake amplifier chip on the analyzer

TDA2050 real vs. fake amplifier chip on the analyzer JohnAudioTech

23K 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