Amp Camp Amp Kit 1.6/1.8

[thomasnadeau]

Yes, the newer LED are probably brighter… LED technology and fabrication is in constant flux and improvement, and more brightness for a given current is something all the manufacturers are going to regard as beneficial for all users.

So as Zen Mod says, you are going to need experiment a little and adjust the resistor to taste. More ohms = dimmer.

And the kits are sometimes shipped with slightly different parts due to availability, pricing changes, etc.... but they still will work. I bet if you compare the model number of the LEDs from the original package they are different. Take a look at the data sheets for both types and you'll also see they list the output brightness/etc... and all of the other relevant parameters, and if you want to match the older ones you can look for these parameters, or get a bunch of one particular kind and replace them all. Or just live with the ones you got.

 

[mlman]

Building the 1.8 kit.
A dumb question about 3 way switch on the rear panel. In step 7 of the 1.8 build guide is says: Photo 3 - please align the ground (outside) tab to the TOP
How do you tell which is the ground tab?
In other words I don't see any indication of which side is up. I want to make sure I have the correct side up.

 

[6L6]

Photo 3 is talking about the barrel jack, not the switch.

The switch has no top or bottom.

 

[mlman]

Photo 3 is talking about the barrel jack, not the switch.

The switch has no top or bottom.

Thanks obvious now that you pointed that out. Embarrassing.

 

[Variac]

We appreciate easy questions!

 

[thomasnadeau]

Thanks obvious now that you pointed that out. Embarrassing.

Don't be embarrassed; we were all newbies here at one time and thats how we learn.

 

[mlman]

Here I am again.
Finished the build and checking the DC balance. Hooked up with no power and get 0V.
I am assuming the amp needs to be connected to power to get 12 volts across the meter.

 

[Mooly]

Yes. It doesn't need speakers connecting to check and set.

 

[thomasnadeau]

Here I am again.
Finished the build and checking the DC balance. Hooked up with no power and get 0V.
I am assuming the amp needs to be connected to power to get 12 volts across the meter.

Yes as Mooly says, you need to connect it to power. I personally hook mine up to speakers, but that is just a habit of mine to connect amplifiers to a load before turning on. Turn the 2 pots all the way down (counter-clock-wise) and plug it in. If there is no smoke or blown fuse, follow the build guide's instructions to set the voltage. Let things warm up for a good 30 minutes and go back and re-check as you likely will have to adjust a little bit more.

 

[ryan391]

I need some help. I built two ACA's with the intention of using them as monoblocks. Neither is working. The first one registers when I try to set the potentiometer on one channel and the other is only reading 7.x Volts at max. I went back and resoldered the boards adding more solder to areas that looked like they may need a better connection. I traced all the wiring, and it looks correct. As this is my first project like this, I am unsure how to proceed. The lights do iluminate on both units, but i cannot get sound out of either.

I am hoping I did something obvious. Can someone please guide me how to troubleshoot.

Pics attached.

 

[6L6]

Put the black multimeter lead into the port marked COM and measure again.

 

[ryan391]

Black on com where should red be and what setting on the multimeter?

 

[Zen Mod]

https://www.youtube.com/results?search_query=how+to+use+multimeter

 

[ryan391]

Not paying attention I was thinking there was a com on the PCB

 

[ryan391]

7.7 on left 12.0 on right
0 on other amp

 

[Zen Mod]

watch youtube videos

with probes connected as ampermeter, you're making shorts in amp, with probes ....... irrelevant which function is chosen on multiimeter

 

[ryan391]

I corrected my post.

 

[Zen Mod]

yes, but it's still unclear what you are measuring

first thing, confirm that you're getting proper PSU voltage to each pcb

 

[ryan391]

I am unclear what you are asking. I am measuring Volts at q1 center pin. Red on center pin black on ground

 

[Zen Mod]

black probe to GND
red probe to V+ on each board

that to confirm that you have proper voltage coming to pcbs

then attach here your referent schm so we can proceed methodically