Volume Control Questions (Impedance and Watts, etc.)

[ML]

I am planning on doing in-wall wire of a house I'm building.
I am going to run wire from my stereo location (future)
with binding posts to volume controls in the rooms I am
interested in having sound. I plan on initially using a
speaker selector connecting to the binding post on the
wall behind the entertainment center.

My questions are:

1) How many Watts do my volume controls need to support
(practically, not theoretically)?

2) Do I need impedance control when using a speaker selector?

3) Do I need impedance control when using a 12-channel amp?

4) Any good sites that describe how to set up a parallel of mono-
speakers? I want a few zones of just ambience music (hallways
and such).

Thanks for all helpful replies!

[[email protected]]

1) It depends on how much power you will be using, loud, moderate or
soft listening level. Too small a control might burn up if too much
power is sent through it. It will hurt nothing to send a small amount
of power through a high power rated control. 50 Watts would be
reasonable, unless you plan to rattle the windows.

2) An impedance compensating control is not a bad idea, it will
present a consistant load to the amplifier.

3) If you are doing all your level control at the amp with each
channel feeding only one speaker, you would not need impedance
controls. If you are planning on using remote speaker level controls,
in the speaker lines, you should use impedance controls.

4) The impedance seen by the amplifier will decrease every time you
add a speaker. Using speakers of equal impedance, divide the impedance
of one speaker by the total number of speakers connected in parallel:
1) 8 ohm speaker = 8 ohms, 2) 8 ohm speakers = 4 ohms, 3) 8 ohm
speakers = 2.66 ohms, 4) 8 ohm speakers = 2 ohms. Do not use a
combination which will result in a load impedance lower than the rated
output impedance of the amplifier (Read the spec. in the amp. manual).
I hope this helps

Lee Salter

[[email protected]]

if using umbilical
cords so they won?t be tough).
Place a slice of ham and cheese on each, along with some minced onion
then fold in half, trimming neatly.
Dredge in flour, eggwash, then seasoned breadcrumbs;
allow to sit for a few minutes.
Sauté in butter and olive oil until golden brown,
about 6 minutes on each side.



Shish Kababes

As old as the hills, this technique has employed seafood, beef, pork, lamb,
poultry, and vegetables; just about anything can be grilled, and young humans
are no exception!

High quality marinade (Teriyaki and garlic perhaps)
1 inch cubes of tender meat, preferably from the nursery
Onions
bell peppers
Wooden or metal skewers

Marinate the meat overnight.
Get the grill good and hot while placing meat, vegetables, and
fruit such as pineapples or cherries on the skewers.
Don?t be afraid to use a variety of meats.
Grill to medium rare,
serve with garlic cous-cous and sautéed asparagus.
Coffee and sherbet for desert then walnuts, cheese, and port.
Cigars for the gentlemen (and ladies if they so desire)!



Crock-Pot Crack Baby

When the quivering, hopelessl