Yes. One way to maximize the potential of our speakers is by input signal "manipulation". This is very similar to crossover selection.
Just wanted to share the modification I did with my low cost Intex PC speakers. Please take note that this modification can also be applied to your audiophile and car speakers
What about the circuit?
We just want to add a snubber circuit (on top of the coupling capacitor, which is the back to back electrolytic cap) to reduce peak voltage and control voltage decay. In other words, a way to damp some periodic signal. If you want to learn further please search online on passive rc snubber circuits.
Why?
To offset the non-linearity of your transistor, tube or gain device (specially when it is driven at the edges or extremes of its bias or gate) and to reduce or minimize the "switching" time of other devices as well eg capacitors from one state to another. And most of all, to "see" how such cheap speakers will sound with a better and "cleaner" input.
THE SUBJECT SPEAKERSThese are your typically low cost, "no need" to upgrade, "put them on the side" or "giveaway" (if you already have money) speakers. So, it is a "good" way to practice before we head on to "bigger" subjects
FrontBack- There are four screws for each speaker
"Opened" speakers- Please take note that the transformer of the leftmost speaker is in parallel with the unshielded voice coil magnet. We will need to shield the voice coil magnet.
The components- These parts are practically available in all electronics parts stores
- Resistors: you should use higher wattage resistor eg 10W if your speakers are 30W or higher
- Electrolytic capacitors: you can use 220uF/63V or 330uF/63V or higher voltage rated
electrolytic capacitors instead of 270uF (if not available)
- Not exactly top of the line but this isn't really about whether it is or not but rather to see how the snubber works. You can upgrade the parts later
Connecting the componentsNote: It is the + polarity of the electrolytic capacitors that is connected or wired together.Wiring the components to the speakersLeft Speaker
Right speaker
Shielding the leftmost speaker- Just used aluminum foil
After screwing the speakers and connecting to the PC, I can only say that the sound is ...
... I am not really a fan of SHOUTcast Radio but I am starting to appreciate it ...
You can play around the snubber resistor and capacitor values to see its effects. The above values were selected based on my calculations
Thanks for viewing