Subwoofer Samsung encontrado NO LIXO - De PASSIVO para ATIVO usando um amplificador artesanal
Links to parts of this video 0:00 Introduction 1:41 Brief history of this project 4:51 How the transformation was done 11:55 Measuring the amplifier's POWER 11:15 Construction and circuit of the CONTROL BOARD 24:26 Assembly is complete 25:30 Equipment used in the listening test 28:39 Functionality and listening test 31:33 Final considerations Link to the Gradiente LAB-75 amplifier shown in this video • VENDA Amplificador Gradiente LAB-75 com Bl... Link to the video "3 ways to connect a subwoofer in a vintage system" • Três maneiras de ligar um sub woofer em qu... We show how we repurposed a passive Samsung subwoofer, which was found in the trash, by adding a homemade amplifier that was produced back in the 90s. To transform a passive subwoofer into an active one, you need to add a power amplifier. The amplifier can be placed inside the subwoofer or in a separate unit. In this project, an internal amplifier was added, with connections for both amplifiers/receivers that have an output for an active subwoofer, and for older amplifiers that need to use the speaker outputs to connect an active subwoofer.

Let's fix a $12,000 Genelec Speaker! You won't believe what was wrong!

Ported or sealed enclosure? A practical test to decide. The case of rebuilding the Polyvox SA-8G

Custom 2-Way Speaker Build | Compact Bass Reflex System

The Best Cable - Wire For Audio? Let's Look Closer!

British vs. American vs. Japanese Sound — Why Speakers Have an Accent

7 Vintage Speakers ROBBING You BLIND (And 3 Worth Every Penny)

VENDA Caixas Polyvox SA-8G - Reconstruídas do zero em cada detalhe: falantes, divisor e madeiramento

I Made Two Stupid Mistakes On This Repair! Can You Spot Them Faster Than I Did? Avant 15A Speaker

Faulty Sony XPLOD Audio Amplifier | Can I Fix It?

Class D Amplifiers EXPOSED | Here's Why They're Accurate, Not Cold

Polyvox VOX-60 speakers that we restored and that were later... caught in a flood.

Truth Revealed About This 9000W Speaker

Milwaukee sealed this PCB in resin so you can't fix it . I did it anyway

STOP Chasing Amplifiers | Pick Your Speakers FIRST!

7 Hi-Fi Scams That FOOLED Everyone in 2026 (And How to Avoid Them)

WARNING: This "Pressure Washer" is a Complete SCAM

Building EXCEPTIONAL speakers using MODERN TECHNIQUES

Class G & Class H Amplifiers | What You NEED to Know!

The Audio Technicians Blacklist: 5 Hi-Fi Brands to Avoid

