Connecting MP3 Player to Amp not enough - help

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FBMinis

Member
Joined 2013
I have a Sandisk Sansa+ Clip MP3 player that I usually connect to an Akai 930:

Clip+ headphone jack > RCAs > Akain 930 Aux in (or Tape in)

However, the mp3 player output is probably too low and I cant get a decent volume through the speakers connected to the Akai.

How can I solve this?

I'm ready to follow instructions and solder an amp kit, if that's the case.

Thank you,
Francisco
 
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gmphadte

Member
Joined 2003
Buy/construct a preamplifier or a voltage amplifier.

If u r looking for a voltage gain of 2, you can use DRV134 and very simple to construct, but u have to check that doubling the output is good enough.

The easiest other one is to construct using NE5532 op-amps. Of course, you will need an appropriate power supply.

Gajanan Phadte
 
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FBMinis

Member
Joined 2013
I ended up successively building this one (there's a link for the schematic under the price number):

MP3 stereo audio amplifier kit - DIY audio amplifier kit - 2136

I had a TDA2822 here and gave it a shot. It's powered by a 9v battery and it sits between the Sansa Clip+ and my Denon 345 video input (nearly the same impedance as Tape or CD - phono has RIAA EQ, no good).

I found these other amps built around the TDA2822:

TDA2822
Stereo TDA2822 audio power amplifier circuit | wirings Diagram
TDA2822 Stereo Audio Amplifier Circuit
 
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