# Amplifier Circuit For Speakers

#### jahanzeb

Joined May 15, 2012
1
I have speakers Edifier R100.

Here are the specifications :
http://www.edifier.com/eng2005/product/s0015_01.htm

I am not satisfied with its performance, the base got too noise when i increase the volume. I want to modify them using any high power amplifier.

As Input Impedance: 10K Ohms , can someone suggest me any high power amplifier circuit. Does amplification will really solve my problem ? If not what can be the alternatives ?

Thanks

#### R!f@@

Joined Apr 2, 2009
9,647
U will hear what you paid for.

Making good sounding Hi end Audio is Expensive and not for n00bs.

U will need good bass unit and a powerful amp which by the way will cost around 10 units of ur edifier

#### gootee

Joined Apr 24, 2007
447
Those speakers have built-in amplifiers. You cannot easily add an amplifier. And it would not improve them.

#### bountyhunter

Joined Sep 7, 2009
2,498
Hum and noise is usually from the power supply.

#### Experimentonomen

Joined Feb 16, 2011
331

#### wayneh

Joined Sep 9, 2010
16,102
I think the OP is long gone, but he asked how to improve what he has, not how to start over (which may be better advice!).

AC hum is likely the noise he hears at high volume. I think a larger filter capacitor on the power supply might help. If the OP has a pile of junk, he should be able to find a nice big electrolytic capacitor to try. Look for a voltage rating no less than the current capacitor, and a higher mfd rating. Pay attention to the polarity markings.

Some improvement in shielding might help, but it's hard to say without seeing the actual PCB and enclosure. Testing performance using a battery instead of the AC power supply would be interesting.