Instructables
Picture of Audio Crossover

This Instructable show how to make your own audio crossover.
My circuit garranties excellent high class audio quality.
Just a new design to reduce crossover frequency losses.

In this instructable you'll need the folowing items:

A drill
Pcb board
A soldering iron
Deoldering Pump
Ferric Chloride or any other Cooper echent
Solder
A horizontal drive transformer ( found in televisions)
10uf and a 2.2uf non-polarized capacitor
1.5 mm to 3.5 mm drill bits
A  speaker box with an tweeter and loudspeaker
A digitial or analog multimeter
A permanent maker
Styrofoam Plate
Six strips of wire preferable three different colours about 1.5 metres
Goggles
Gloves
Surgical Alcohol
 

 
Remove these adsRemove these ads by Signing Up

Step 1: Summary Of Operation

Picture of Summary Of Operation
horizontal driver transformer.jpg
This is the schematic, simple and easy to make if your not doing the pcb.
It can be placed on a breadboard with ease, overall it shows you how to connect it.

Well the transformer that i used can be found in a crt television set and it must be selected based on the power rating of your speaker. 
I have a 15W Loudspeaker and a 5W tweeter this transformer is fairly small, so if you plan to have speakers that are very powerful i advise you to get a transformer of similar ratio but bigger. The transformer's ratio is 1 : 5.
Its primary resistance was 0.8 ohms and secondary 3.4 ohms

The same goes for the capacitors the voltage range is small like 16v -50v for small power applications. As you increase your output power the voltage of the capacitors must increase to the range of 100v -250V. The value of the capactors usually stay the same. Use non polarized capacitors because they wouldnt be damaged by the alternating voltage.








 
broorb22 hours ago

great work! congratulations!

Would you mind sharing the specs for the transformer that you used ?

Thanks,

-Glenn

Merlincolde6 months ago
If I only wanted to make a low pass filter (with req. circuitry) and follow up by using the transformer and afterwards a logarithmic potentiometer to control my bass, would this work?
josh1001 (author)  Merlincolde6 months ago
Yes u can, just have place the pot in series with c2 and ground, I would go with no more than a 10kohm pot
ivanjacob2 years ago
looks pretty good! im planning on building a 12v sound system and im gonna use something like this
josh1001 (author)  ivanjacob2 years ago
cool a good transformer does the trick