MP3 Shield to Amp - Line Out Issue

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push8me
 
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MP3 Shield to Amp - Line Out Issue

Post by push8me »

Hello. Using Adafruit MP3 shield. This is the non amp version.

I have a soldered connection from the Line Out +/- to an amp, however I am not getting any signal out. Works fine when using the headphone jack. The description says these can be used as line out, however I don't think it works without the amp build in. Am I incorrect? Is there a workaround. The solder joints are fine so its definitely not that.

Thank you

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Franklin97355
 
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Re: MP3 Shield to Amp - Line Out Issue

Post by Franklin97355 »

Still if you could post pictures of your connections and the specs on the amp you are inputting to it would help.

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push8me
 
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Re: MP3 Shield to Amp - Line Out Issue

Post by push8me »

Solder has good contact all around. Picture was taken with phone, sorry for quality...

It works very well with the headphone connected to the amp.

Here is the amp: http://www.parts-express.com/6x100w-tda ... d--320-307

Is it possible that the there is no signal on the line out if the built in amp is not included?

Thanks for the help.
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mp3_shield
mp3_shield
mp3_shield.jpg (266.92 KiB) Viewed 231 times

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push8me
 
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Re: MP3 Shield to Amp - Line Out Issue

Post by push8me »

Also, if this will work without the built in amp, will these terminal blocks you sell fit the MP3 shield?

https://www.adafruit.com/products/724

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push8me
 
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Re: MP3 Shield to Amp - Line Out Issue

Post by push8me »

RCA Solder 2
RCA Solder 2
rca_solder2.jpg (396.09 KiB) Viewed 223 times
RCA Connection
RCA Connection
rca_connection.jpg (270.36 KiB) Viewed 223 times
RCA solder
RCA solder
rca_solder.jpg (252.38 KiB) Viewed 223 times
Pics of rca solder and rca connection

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Franklin97355
 
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Re: MP3 Shield to Amp - Line Out Issue

Post by Franklin97355 »

It looks like the terminal blocks are output from the amp only and you would have to create a cable that plugs into the headphone jack to get to the signal.

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push8me
 
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Re: MP3 Shield to Amp - Line Out Issue

Post by push8me »

Roger that. Bummer. Thank you for the info!

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