How do I drive speakers from headphone drivers?

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Hanalee

Member
Location
China, Hongkong
Occupation
Electronic Engineer
Hi, all
I’m using a SOM which has TLV320AIC3106 on it, I want to use speakers, but TLV320AIC3106 has output for headphones.

I am complete newb regarding audio electronics, but I guess I need to use amplifier for this.

Is there anyone have some ideas regarding this issue? What amplifier to use? Many thanks.
 
junkhound

junkhound

Senior Member
Location
Renton, WA
Occupation
EE, power electronics specialty
Hmm - electronic engineer in China needs to ask about audio amplifier? We should be asking you!

A friend recently bought a made in china class E for under $US90 in the states.
Search "Chi-fi" in English language texts, then search in HK Chinese - bet you can find a 100 kHz DAC audio class E 1 kW 2 channel inside China for under $15 USD.

note "chi-fi' in no way meant to be derogatory, 'status' audiophiles will spend $2000 for an amp that has less performance capability that the $15 Chinese version.

Of course, if you be one of those who think vacuum tube class AB amps are "warm" with " better' sound, the same peaking compression can be obtained thru DAC programming if desired. Only way to tell the difference is with a scope.
 
synchro

synchro

Senior Member
Location
Chicago, IL
Occupation
EE
What are your requirements for speaker impedance and audio output power.?
Also what is the available DC supply voltage?
If high efficiency is needed (for example in a battery powered portable product) then a Class-D switching amplifier would be very appropriate.
 
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retirede

Senior Member
Location
Illinois
I have used one of these for 8 years:

Amazon.com: Portable Home Audio Power Amplifier - 2X120 Watt, 2 Channel Surround Sound Stereo Receiver w/ USB IN - For Amplified Subwoofer Speaker, CD DVD, MP3, iPhone, Phone, Theater, PA System - Pyle PTAU45: Home Audio & Theater

Buy Portable Home Audio Power Amplifier - 2X120 Watt, 2 Channel Surround Sound Stereo Receiver w/ USB IN - For Amplified Subwoofer Speaker, CD DVD, MP3, iPhone, Phone, Theater, PA System - Pyle PTAU45: Amplifiers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com

Perfectly adequate for powering aux speakers near my pool.
 
H

Hanalee

Member
Location
China, Hongkong
Occupation
Electronic Engineer
All,
I want an amplifier with a built in power supply, or its own wall wart and internal power supply, yea, not just a small amplifier board. The power supplies for small audio amps have to be very "clean" so as not to get 50/60 Hz hum in the output.
 
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