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Hello there (greetings from Germany)

Maybe someone can help me to solve this problem with the gb-soundboard.

Every time I connect the cable to the speaker (plus in plus & minus in minus) the speaker makes a short sound and then its still. The green light from the SDCard-Module isn´t working anymore. When I disconnect the cable from speaker and module, the green light from sd card module is working again. Why?

It would be great to here from you!! Thank you!!

Ahh. I think I used the false battery. What Battery should I use for it?

What are the specs on the battery you're using? What are the specs of the speaker you're using?

I used a 9 Volt Block Batterie. Speaker: Nominal Diameter: 4-1/2"
Power Handling (RMS): 40 Watts
Power Handling (max): 70 Watts
Impedance: 8 ohms
Frequency Response: 70 to 13,000 Hz

I think the batterie is to weak. But which Batterie can I use for it?

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You need a 12v battery capable of delivering a couple of amps (I believe 2 amps, but don't quote me).

If you were just using a standard 9v battery, it won't provide enough power.

This is what I am using. https://www.amazon.com/TalentCell-Recha ... 98&sr=8-10

What cable so you use to connect to the amplifier?

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I use this

https://www.amazon.com/gp/product/B00QJ ... UTF8&psc=1