In our local church, we have different groups that use the hall for various
We have a PA system that has numerous sockets around the church for plugging
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.?
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
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
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.
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
/<---------------------------------------- to Microphone input
-----------------------------------------------------to mic input earth
from CD player outer screen of cable
this one will do, you can use both sides one for the left channel and
one for the right If you only have Mono inputs to your mixer then put
the balance on one input full right, the other full left have fun:!...
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
at wedding receptions "just in case". Never knew they had a posh name until just
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
*Do they ever shut up on your planet?
Dave Plowman firstname.lastname@example.org London SW
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