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Old 21st December 2011, 08:30 PM   #1
JoeDJ is offline JoeDJ  United States
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Default Need to boost output of MP3 player....

I have a "Sandisk Sansa Clip +" which I frequently connect to my stereo sys.
The output, even though low, was adequate for the most part with my old speakers.
However, my new speakers are acoustic suspension and of course, less efficient. So, some songs are a bit low in volume with the player and amp both turned up to the max.

What it the best inexpensive thing to use to raise the output of the player?

I was thinking about a "Fiio E5" as it's simple, cheap, and battery
(rechargable) powered. Would that work?

I tried my headphone amp but it did not seem to raise the volume level even when turned up all the way.

Anway, I do not what to spend to much on something.
Any suggestions?

Last edited by JoeDJ; 21st December 2011 at 08:34 PM.
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Old 22nd December 2011, 02:19 PM   #2
JoeDJ is offline JoeDJ  United States
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I just ordered a "FIio E6"
If it does not work adequately for this purpose, I will still have a use for it.
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Old 22nd December 2011, 05:57 PM   #3
Mooly is offline Mooly  United Kingdom
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Maybe you could have altered the input sensitivity of one of the amp inputs to use with an MP3 player.
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Old 22nd December 2011, 11:20 PM   #4
JoeDJ is offline JoeDJ  United States
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^ ^ ^
It's not an option as the amp only has 1 input. I'm using a seperate source switch to switch sources.

What I really need is a higher watttage amp. I'm currently runninng only 50w RMS pc. High power stereo amps seem to be a dying breed and now, high wattage seems to mean anything over 10 watts.
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Old 22nd December 2011, 11:54 PM   #5
ChrisA is offline ChrisA  United States
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Quote:
Originally Posted by JoeDJ View Post
^ ^ ^
It's not an option as the amp only has 1 input. I'm using a seperate source switch to switch sources.

What I really need is a higher watttage amp. I'm currently runninng only 50w RMS pc. High power stereo amps seem to be a dying breed and now, high wattage seems to mean anything over 10 watts.
What you need is a preamp. This is a DIY forum so I'd suggest just a cheap op-amp set up for a gain of about 4. Power by a pair of 9V battery.

Do you have a meter that can measure RMS volts? Checks the AC volts in the input jack to see what the input level is.

Even very insensitive speakers, say 80dB/W at 1M will make a bit of noise with a 50W amp. The problem has to be the input level to the amp
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Old 22nd December 2011, 11:59 PM   #6
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I use an inexpensive, 9 volt battery Cmoy amp with my MP3 player....works fine.

Steve
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Old 23rd December 2011, 12:56 AM   #7
JoeDJ is offline JoeDJ  United States
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Quote:
Originally Posted by ChrisA View Post
What you need is a preamp. This is a DIY forum so I'd suggest just a cheap op-amp set up for a gain of about 4. Power by a pair of 9V battery.

Do you have a meter that can measure RMS volts? Checks the AC volts in the input jack to see what the input level is.

Even very insensitive speakers, say 80dB/W at 1M will make a bit of noise with a 50W amp. The problem has to be the input level to the amp
Yeah, but I want to do more than just make noise.

Actually, all other sources are fine and I only have to turn the amp's volume up about to about 11:00 on the rotary dial.

After doing a bit of research, I found out that the Sandisk Sasna clip" does indeed have a somewhat low ouput.

Anway, for just MP3s the Fiio E6 should be adequate. Most of them were aquired during the early days of Napster and the qualty varies.
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Old 23rd December 2011, 05:42 PM   #8
JoeDJ is offline JoeDJ  United States
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Originally Posted by KrankKall View Post
I use an inexpensive, 9 volt battery Cmoy amp with my MP3 player....works fine.

Steve
Actually, I forgot about the Cmoy amps. Perhaps I may stiil get or assemble one.
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Old 23rd December 2011, 06:00 PM   #9
Mooly is offline Mooly  United Kingdom
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Just to wander a bit... a simple 1 transistor FET amp could actually work wonders for this. The distortion it generates would be even harmonic and may well make the MP3 files sound better to the ear.
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Old 24th December 2011, 06:18 AM   #10
ChrisA is offline ChrisA  United States
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Originally Posted by JoeDJ View Post
Yeah, but I want to do more than just make noise.

Actually, all other sources are fine and I only have to turn the amp's volume up about to about 11:00 on the rotary dial.

After doing a bit of research, I found out that the Sandisk Sasna clip" does indeed have a somewhat low ouput.
Like I said a preamp is required. Someone suggested a cmoy headphone amp. I think that is about the same thing I suggested.

I wonder if something as simple as a 1:2 audio transformer would work. If the amp has a high input impedance a transformer would be simple and noiseless.
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