AMP6-Basic assembled aint playing

[hegner]

Hi 41hz folks

I have bought the assembled version of AMP6-basic. Today I soldered cables on the plus and minus on the amp, and connected it to a car battery. I connected a random car speaker, just to see it playing. But then I got dissapointed! Nothings comming out of the speaker.
I connected the amp to my MP3 player and a discman with a jack-to-jack cable.

I tested if there were power on the amp, and there is. Also on the battery.
I tried several speakers.

Am I missing something? What did I do wrong?
I really need some answers

[Scratchy]

Have you read the Assembly Instructions? There is a sticky with a link to these at the top of this forum for a reason....
http://wiki.41hz.com/AMP6-BASIC.ashx

There is a sleep jumper which must be removed for the AMP to play:

• Sleep/mute. The chip has a sleep and a mute function. Both can shut down the amplifier. You can reach both via the jumper J2. In sleep mode the chip draws less than 0.3 mA. If you use a power breaker or a power supply with an on/off switch, you may permanently close the J2 jumper, but there may be turn on thumps. Therefore, using a switch for the mute function is recommended rater than using a power switch.
• The chip mute input is also hard wired to the chip error/over-temperature sensing output on the PCB. In case a too high temperature is reached this mutes the amp. It automatically and un-mutes again when the chip has cooled down a bit. In case of over-current the amp is muted in a latched way and must then be power toggled off/on to be restarted.

Powering up for the first time
Always de-power the amp before doing any work! Never connect or disconnect signal connector or speaker cables with power connected as this can damage the amp. The Sleep/mute jumpers are the ONLY exception.

The Tripath TA2020 chip is rated 16V absolute maximum. About 14.0V is a reasonable maximum in real life, to allow for fluctuations. The center pin of the power supply connector J3 is positive.

• Before connecting the power, inspect the board closely for any solder splutter or other contaminations. Clean off everything that looks suspicious. Re-do any solder joint that does not look perfect.
• Remove the jumper from J2, if it is there, for sleep mode.
• Connect the power supply. When in sleep mode, the amp should draw less than one mA.
• If all seems OK, connect the J2 jumper Awake. If all is OK, connect the MUTE jumper as well (Better is to mount a switch on your amp front panel instead of this jumper, but that can be done later).
• Check the fuse. If it has blown, shut of the power, disconnect the board and check all components and solder connections. Check that the Tripath chip heat slug is not hot.
• If all seems OK, shut of the power.
• Connect the speaker wires to J1. Important: the output is bridged, so each speaker should connect to its own respective plus and minus. The minus is NOT ground and negative is NOT common for the two channels and NOT common to the power supply minus/ground.
• Connect a signal source with its ground leads to J5, the 3.5mm jack
• Connect a signal source and set the volume very low
• Turn on the power, awake the amp and check if you get any sound.
• If everything seems OK, you can slowly increase the power. If all is OK, switch off power, replace the power supply fuse for a larger one, rated as your transformer and try again with higher volume. For testing at higher power, the chip should be mounted on a heat sink.
• Enjoy the music!

[hegner]

Thank you so much. I must have missed that point!
I plays now, PERFECT!

Now I'm happy again