9voltnewbie said:
I never learned what impedence and ohms (sp?) are... does anybody know that stuff or have a good link to a guide or something about that?
Because I've got a reel2reel
projector that we use and it has an 8ohm 1/4 output... how should that be hooked up to a sound board?
Hiya,
well if you are looking for links you can read up on, I'll post a few good ones below on the topic to getya started...
To answer your question (and try not to get techno-geek in terms):
Impedance and Ohms are differeing measurements of Resistance, specifically the amount of resistance an electrical
current experiences while it moves from one place to another. Specifcally--Impedance is defined as "the total
passive resistance offered to the flow of electronic
current". This would refer to the
wire and circuitry that the electronic
current passes thru--each has its own amount of resistance--kind of like a water hose that has something stuffed into the end--the water has to pass
thru it to flow--but what it encounters can cause it to slow down or reduce in amount. Technically,
impedance is determined by a combined measurement based on resistance and reactance(inductive &
capacitance) in a given
circuit... Some metals let electricity pass
thru well, while others do not. Many factors can
effect resistance such as
wire thickness and compisition and distance as well as basic things like temperature...some things that heat up can cause a drastic change in
impedance to an electrical
circuit Ohms refer to an amount of resistance based upon calculations made from
Ohms Law. Using
Voltage,
Current and Resistance in any combination, the math of two of those will give you the other.
Ohms Law is the following:
Voltage =
Current X Resistance...say 14Volts = 2amperes X 7ohms
Current =
Voltage / Resistance...say 2amperes = 14volts / 7ohms ( / = divided by)
Resistance =
Voltage /
Current...say 7 ohms = 14volts / 2 amperes
Here area few links you can check out on your own...
http://www.whirlwindusa.com/tech03.html
http://ohmslaw.com/ohmslaw.htm
also check out the STUDY
HALL of
www.prosoundweb.com for more tidbits of info...
Your 1/4" reel to reel
deck should have a
LINE OUT that should go into a sound
console 1/4"
LINE IN.
-wolf