Simple Test of AHB System 8 2416 Mixing Desk

[scrubber]

Hi All

 

I am posting this as a plea for advice from people who know more about these things than I do.

 

We have an AHB System 8 2416 Mixing Desk. It was smoke damaged and we as specialists in decontamination of electronic items have carried out our cleaning process on it. It is now shiny and bright.

 

The problem is that we are not experts in how these things work.

 

We were supplied with limited leads for the unit.

 

Is it possible to test it (a very simple test is sufficient) using only a Yamaha Clavinova and a pair of headphones.

 

All we want to do is make sure that when we put a signal in one end, it comes out the other.

 

If you have any suggestions I would be most grateful.

[James]

Hi scrubber

 

It is possible to perform a simple test of the desk that will prove it powers up and passes audio however in cases where a desk has suffered partical damage, like smoke damage it would be neccesary to test every single fader, dial switch input and output of the desk.

 

There are some guys who specialise in Mixing console repair not that I'm doubting your skills in cleaning smoke damage but there are a lot of things that can go wrong with a sound desk.

 

Sorry

 

However in answer to your initial question, unfortunatly there doesn't seem to be a user manual on the manafacturers website

 

James

[paulears]

phew! I'm not sure if a simple test would do. Here's a simple test. The clavinova can be used as a signal source using (assuming it your model has them) one of the pair of output sockets - not the headphone socket. Some older clavinovas only have a headphone socket. get the correct cables, go into the line input on each channel, and something should come out of the headphones, once you've worked out the routing.

 

The problem as I see it is there are so many routes through the mixer that need testing that you really need to do it properly or it won't be acceptable to the owner. just one crackly pot, or noisy routing switch wouldn't be acceptable, and as you can see - it is a fairly complicated beast. Dirty contacts either just make unpleasant noises, or worse can make bangs loud enough to do damage. The mic inputs have more gain, and will need testing to make sure they work. Obviously, you need a microphone to be able to do this. The headphone output is not proof that something actually comes out of the main outputs, so you need something to test that with too!

 

So, your clavinova will test something in, to something out - but if it's an AHB - the B indicates it's not exactly new, so any odd noises may well have been there before the damage.

[James]

scrubber, where are you based? Just thinking that someone might be local to you and able to have a look at the desk for you in order to thoroughly test it?

 

James

 

So, your clavinova will test something in, to something out - but if it's an AHB - the B indicates it's not exactly new, so any odd noises may well have been there before the damage.

 

1982-1993 depending on version.

[scrubber]

Thanks for the responses,

 

I fully appreciate that there are many areas within a desk that can be problematic. I am just interested in making sure that the unit functions. Whether it is acceptable is a matter for another day.