In our local church, we have different groups that use the hall for various functions.
We have a PA system that has numerous sockets around the church for plugging microphones into.
I was wondering if it would be possible to plug a personal CD player, which has a line output socket as well as an headphone socket, into the mic sockets without causing any damage to the PA System.
If I need a circuit diagram, please does anyone have one that I can build.?
Jim
somewhere there has to be a mixer for all that lot. That SHOULD have line level input that you can use.
Damge, is unlikeley but ghastly overloads and distortion is. You will be
10-100 times higher signal than a mike produces.
First of all find out where all those mike sockets go, and report back.
I like the sound of this. I have told my wife to play Hendrix's 'VOODOO CHILE' as loud as possible as I get burnt or interred, whichever is the cheaper.
You need a DI box:
We have a microphone on the pulpit that goes directly to the PA System and uses 1 mic input We have 2 radio mics on different frequencies that take up another 2 mic inputs We have numerous sockets all linked that go to the final mic input. We have to make sure that only one mic is used on these sockets at a time.
Selector switches and level controls regulate the outputs for each channel.
No aux socket.
Personally I get a big thrill from building something and seeing it work rather than just purchasing a box and plugging it in.
Very interesting article.
Somewhat OT, but have you considered promession?
Nick.
Then a DI transformer is what you need, unless there is a linmic switch on one or more of the inputs.
There is nothing TO build. It's a specialised transformer in a box with two sockets!
sounds good. Could take the powder and put it on the veg garden and let it decompose that way anyway.
In which case, the line output into a mic input overload will enhance the Experience...
Tons on ebay like:
In article , the_constructor scribeth thus
Go to Maplins or somewhere similar and buy a 10 K ohm pot. (Potentiometer) a "LOG" one if they have one.
Wire the CD player across that, co-ax screened type cable from said CD player screen thats the outer braiding on One end of the pot, the Inner to the other.
Take another bit of screened coax type cable or a couple of bits of ordinary wire will do, keep them reasonably short.
Take One wire to One end of the pot thats got the screened or outer braiding on, and the other to the Middle connection of the pot.
This will give you a very simple attenuator volume control shouldn't cost more than a quid..
You can do the same with fixed resistors but this way makes it variable so you can twiddle it to whatever level you want...
from CD player
---------\ / \ /
True: )
Ah, whoops. Finger trouble. Disregard last post.
I'm surprised that Grimly hasn't posted this link
A DI box is a bit overkill. They are usually designed to bridge a guitar pickup etc (high impedance) without loading it and match the low impedance mic input, with as little level loss as possible. A CD player has a line level output, so a simple attenuator will suffice.
Although it would be better performance wise to use a line input to the mixer.
Luxury, that's got a spindle and costs very nearly a pound. Skelington presets are good enough for me ;-)
I've done this kind of bodge for 40 years, even been known to carry one in my suit pocket at wedding receptions "just in case". Never knew they had a posh name until just now though.
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