Why Do Speakers Need Crossovers? How Do They Work? What's Inside Capacitors? • Bozak B-302A Gem • P2

In this episode, I replace the bad capacitors in this 1957 classic speaker. In the name of science and fun, I also cut the new and old capacitors open for comparison. And I explain how crossovers work, and test the Bozak’s crossover after I restore it and make some wiring changes.

Here are the topics covered in this video and the time stamps:

0:00 Intro
0:10 Quick Review of Previous Episode
0:35 Have I Even Listened to The Speaker?
0:54 It’s Got Inductors, Too!
1:05 What Does “Leaky” Capacitor Mean?
1:24 The Problem With Wax/Paper/Foil Capacitors
1:45 The New Replacement Capacitors
1:52 Capacitor Dissections
2:26 How Do The Old And New Capacitors Compare?
2:57 Metallized Film Capacitors
3:17 The Bozak Crossover N-10102 Crossover
3:21 Installing The New Capacitors
3:53 Why Do Speakers Need Crossovers?
4:08 Protecting The Tweeter
4:28 Capacitors as High Pass Filters
4:49 Protecting The Woofer
5:11 Inductors as Low Pass Filters
5:41 What If We Add a Midrange?
5:52 Band Pass Filters
6:31 How Capacitor/Inductor Values Change Cutoff Frequencies
6:44 The Bozak’s Capacitor/Inductor Values
6:58 Calculating Cutoff Frequencies
7:22 First Order Crossovers
7:29 What’s An Octave?
8:10 Comparing a 64-Year-Old Speaker to a New One
8:22 Second Order Crossovers
8:47 Third/Fourth Order Crossovers
8:55 Just Scratching The Surface
9:02 Resistors In Crossovers
9:10 Active Electronic Filters vs Passive
9:25 The Problem With Testing The Crossover
10:14 Making a Circuit Change to The Crossover
10:47 Crossover Bench Tests
10:54 Woofer Output Test
11:20 Midrange Output Test
11:32 Tweeter Output Test

To see all the videos in this series, please click:
https://youtube.com/playlist?list=PLCH_MMh8A6cHFBMzIMPMrVhK0kRgWs1Kv

To visit my Amazon Shop, click here:https://www.amazon.com/shop/fluxcondenservintageaudioelectronics

#speaker #speakers #speakerrepair #hifi #1950s
Bozak Speaker. What’s inside a capacitor? How do you test a speaker crossover? How do you calculate capacitor cutoff frequency? How do you calculate inductor cutoff frequency? How do you calculate crossover values?

Видео Why Do Speakers Need Crossovers? How Do They Work? What's Inside Capacitors? • Bozak B-302A Gem • P2 канала Flux Condenser Vintage Audio Electronics