Jake
I have a "Studio-Standard by Fisher AM/FM STEREO RECEIVER" in my bedroom. It works great for a stereo system, and right now I have two large speakers sitting next to it. You'll have to forgive my lack of correct terminology, I'm more of a software guy. And for clarification purposes, I'll try to be as descriptive as possible.
Each speaker has a positive and negative wire(I assume), or for lack of correct knowledge, two wires. One speaker has two sets of + and - wires coming out of it. So the setup I have is: Both sets of wires from a single speaker plugged into a single pair of output jacks on the back of the stereo, for a total of four output jacks that are collectively labeled "Speakers A". An identical set of four output jacks directly under are named "Speakers B". On the front of the stereo are two toggle buttons labeled "Speakers A" and "Speakers B". So I have two questions:
1)When I plug another set of speakers into the output labeled "Speakers B" and toggle the button for the second set of speakers, the sound quality degrades terribly in quality and amplitude. Is this a problem with the stereo, or is it just not built to support multiple speaker system at once?
2)Can I have multiple speakers running to the same output jack, or will it short at a certain point?
I apologize if it's hard to understand the questions, I tried to be as descriptive as I can.
Answer
It would have helped if you had included the make and model of the speakers if you had that info. And are the speakers matched (the same kind), or do you have 2 different kinds? It's almost sounds like you do.
When you start hooking up speakers to an amp, the most important thing is to understand what's happening as far as the loading on the amp goes. This is where those pesky "ohms" come into play.
All (decent) speakers are going to be rated at a certain impedance, usually either 8 or 4 ohms. Amplifiers have a minimum load that they will drive without damaging themselves. Usually 4 ohms.
Now, it's perfectly fine to put an 8 ohm speaker on an amp that says "4 ohm minimum load". The amp will only produce about half of it's maximum power, but it will be happy. What you don't want to do is to put a load on the amp that's less than 4 ohms. Then the amp starts trying to produce more power than it was designed to. At best, if you have a decent amp with thermal overload protection it will shut down to protect itself. If you have a cheap amp (where they saved a buck by not putting in such protection), then you'll damage the output devices.
Impedances add up kind of funky. The actual formula for 2 speakers in parallel is:
Zt = (Z1 * Z2) / Z1 + Z2)
Where Zt = Total Load
Z1, Z2 = Individual speaker impedances.
So, if you take two 8 ohm speakers in parallel, you wind up with:
Zt= (8 * 8) / (8 + 8)
= 64 / 16
= 4 ohms
I'm guessing that either the amp can't support the load you're trying to put on it, or it has a problem. If it runs fine with just one or the other but not both, it's a loading issue.
What's throwing me off is the speaker with "2 sets of wires" coming out of it. It's possible that this speaker is wired for biamplification (which is another topic), or they are "sense" wires that some very high quality amps use to detect what interactions the speaker is having with the amp and makes internal adjustments to minimize distortion.
This is the best I can give you without know specific brands or ratings of the speakers.
Good luck.
Greetings from Austin, Tx
Ken
It would have helped if you had included the make and model of the speakers if you had that info. And are the speakers matched (the same kind), or do you have 2 different kinds? It's almost sounds like you do.
When you start hooking up speakers to an amp, the most important thing is to understand what's happening as far as the loading on the amp goes. This is where those pesky "ohms" come into play.
All (decent) speakers are going to be rated at a certain impedance, usually either 8 or 4 ohms. Amplifiers have a minimum load that they will drive without damaging themselves. Usually 4 ohms.
Now, it's perfectly fine to put an 8 ohm speaker on an amp that says "4 ohm minimum load". The amp will only produce about half of it's maximum power, but it will be happy. What you don't want to do is to put a load on the amp that's less than 4 ohms. Then the amp starts trying to produce more power than it was designed to. At best, if you have a decent amp with thermal overload protection it will shut down to protect itself. If you have a cheap amp (where they saved a buck by not putting in such protection), then you'll damage the output devices.
Impedances add up kind of funky. The actual formula for 2 speakers in parallel is:
Zt = (Z1 * Z2) / Z1 + Z2)
Where Zt = Total Load
Z1, Z2 = Individual speaker impedances.
So, if you take two 8 ohm speakers in parallel, you wind up with:
Zt= (8 * 8) / (8 + 8)
= 64 / 16
= 4 ohms
I'm guessing that either the amp can't support the load you're trying to put on it, or it has a problem. If it runs fine with just one or the other but not both, it's a loading issue.
What's throwing me off is the speaker with "2 sets of wires" coming out of it. It's possible that this speaker is wired for biamplification (which is another topic), or they are "sense" wires that some very high quality amps use to detect what interactions the speaker is having with the amp and makes internal adjustments to minimize distortion.
This is the best I can give you without know specific brands or ratings of the speakers.
Good luck.
Greetings from Austin, Tx
Ken
Please help with my Internet setup?
Q. i am getting cable Internet tomorrow for a 2 bedroom apartment. I have a desktop that is not wireless capable. My roomate has a laptop that is wireless capable. How should we setup our network? Do we have to get a wireless router and do I have to get a wireless adapter?
Please give good details because neither of us is that computer savvy. Thanks.
Please give good details because neither of us is that computer savvy. Thanks.
Answer
First a little terminology. Wireless adaptor is what you plug into the computer. Any computer that you want to be wireless will need a wireless adaptor. Wireless Access Point or Wireless Router (they are the same thing) is the place where you will connect all of your computers.
Unless your cable company provides youw ith a wireless access point, you will need to buy one. D-Link and Linksys are the most common brands out there...both are very good.
To set this up you'll plug the cable modem into your cable connection, then your wireless access point into your cable modem using a network cable. Make sure you use the WAN port on your wireless access point. Then use one of the other ports on your wireless access point to plug into your desktop. If your roommates laptop does not already have wireless capability, she will need to buy a wireless adaptor (aka wireless card) to connect wirelessly to the wireless access point. Make sure you configure your wireless access point for WPA encryption...otherwise people will sniff your traffic and find out all of your passwords and read all of your embarrassing IM convos. Even WEP is weak...I could break it within an hour. But that is a whole nother topic.
Another word of caution....you may need to connect one of your computers directly to the cable modem the first time you try to connect...but after that you will always be able to go through the wireless access point.
First a little terminology. Wireless adaptor is what you plug into the computer. Any computer that you want to be wireless will need a wireless adaptor. Wireless Access Point or Wireless Router (they are the same thing) is the place where you will connect all of your computers.
Unless your cable company provides youw ith a wireless access point, you will need to buy one. D-Link and Linksys are the most common brands out there...both are very good.
To set this up you'll plug the cable modem into your cable connection, then your wireless access point into your cable modem using a network cable. Make sure you use the WAN port on your wireless access point. Then use one of the other ports on your wireless access point to plug into your desktop. If your roommates laptop does not already have wireless capability, she will need to buy a wireless adaptor (aka wireless card) to connect wirelessly to the wireless access point. Make sure you configure your wireless access point for WPA encryption...otherwise people will sniff your traffic and find out all of your passwords and read all of your embarrassing IM convos. Even WEP is weak...I could break it within an hour. But that is a whole nother topic.
Another word of caution....you may need to connect one of your computers directly to the cable modem the first time you try to connect...but after that you will always be able to go through the wireless access point.
Powered by Yahoo! Answers
0 comments:
Post a Comment