0
P=VI=V^2/R P=12x12/6=24W
What else can I help you with?
Which subwoofer can I replace for the 2001 Lexus gs300 is it 4ohm or 8ohm?
its a 6ohm sub in the stock location. if you are going to replace it you will need to purchase a good amp. the stock amp does not have adequate power to power any other sub. 10" Kicker comp subs make a great replacement, and get an amp that is half the RMS power input of the sub. make shure that you are reading the AMPs RMS power output.
What is 6ohm in amps?
Ohms is a measurement of resistance between the amp and speakers. Most home audio is 8 ohm, if you run 4 or 6 ohm speakers you cut resistance down and get more power out of the amp. Say your stereo is 100X2 @ 8ohm, if you use 4 ohm speakers you should get 50% more power BUT the amp is working twice as hard and can burn up.
How many volts would I have with one amp and 6 ohms?
You need to know the current flow through the circuit as it is now, or the resistance of the circuit to be able to determine this. If loading is very small (you're not drawing much current), you can set up a voltage divider so you get 1 volt across one resistor; this will waste electricity, so I don't suggest it if that is a serious concern. The resistors must be sized small relative to the current load to avoid causing problems with the circuit.
What current would flow between two points in an electric circuit with a potential difference of 120 V and a resistance of 30 ohm?
Potential difference = Current * Resistance so putting in the values of p.d. and current and finding the value of resistance gives a value of 40 ohms.
Can you run a single 2ohm dual voice coil sub and a single 4ohm DVC sub off a single mono amp?
It depends on the amplifier. If you absolutely want to leave the current subwoofer configuration as 2ohm and 4ohm, the resultant impedance seen by the amplifier is as follows: Both wired In-Series: 2ohm + 4ohm = 6 ohms Both wired In-Parallel: 1 / ( (1/2) + (1/4) ) = 1.3 ohms The Parallel configuration can probably be only run by a 1ohm-stable amplifier whereas the 6ohm Series configuration can be run by any amplifier that is able to drive anything under 6 ohms. Also if ran in the Parallel configuration, this mismatch in driver impedance may also cause the 2ohm subwoofer to receive more power, resulting in a different sound characteristics than the 4ohm subwoofer. Usually with DVC subwoofers you want to match the impedance between drivers. If possible, configure each subwoofer to 4ohms and connect them in Parallel. This will produce a total impedance of 2 ohms (you need a 2ohm-stable amplifier). If your DVC subwoofers only support 2ohms and 8ohms do either: Both wired In-Series - configure subwoofers to 2ohms: 2ohms + 2ohms = 4ohms Both wired In-Parallel - configure subwoofers to 8ohms: 1 / ( (1/8) + (1+8) ) = 4ohms.
How would you connect 1- 4 ohm 40 watt speaker and 1- 6 ohm 35 watt speaker to left output of an AV receiver with 8 ohm and 110 watt output. Same combo for right output?
The 2- 4 ohm speakers can be hooked up in series to make 8 ohms. you cant hook up the 2- 6 ohm, cause if you put them in series, you have 12 ohms. If you put them in , parallel you have 3 ohms out from av to +(4ohms), -(4ohms) to +(4ohms), -(4ohms) to - av. And do the math 4ohms plus 4ohms equals 8ohms. doing the math on the 2- 6ohm speakers... 6ohms + 6 ohms = 12ohms I dont think 12ohms would blow your system, but it wont sound right. now if you raise the volume too loud on the av you will blow the speaker coils out you may boost the wattage of the 2-4ohm speakers (in series) to maybe 70 watts total ******************************************* If you connect loudspeakers in series, the amplifier can not properly damp them, but, unless you are a fairly critical listener, you perhaps won't detect the difference. Connecting two 6 ohm 'speakers in series will give a load of 12 ohms, and will not "blow" anything. Connecting a load impedance higher than the amplifier's design load will do no harm at all. The only disadvantage is that the amplifier will not be able to develop its rated power output.
How can you hook up a amp to a receiver?
With all the activity lately on the Shack from new members who are having difficulties hooking up the receivers properly I thought it would be a good idea to have a dedicated post on how to hook your speakers and other equipment up to get the best results.As with all home theater setups there is a plethora of wires and connections that if not connected properly you wont be able to get the full potential out of your gear.Receivers seem to always be the biggest part of the confusion and alot of questions seem to come up about "how to get something working" or "why dont I hear this properly" so Below is a step by step guide as to how to go about this:Although there are many manufacturers of receivers, DVD players and other components they all have alot of similarities with regards to connections on the back.We will start with the what I call the heart of the system the Receiver.The first thing you need to decide is what speaker connections you need to use and this seems to cause alot of confusion. Do you have a two speaker setup or a full 7.1 setup meaning 7 speakers and one subwoofer.?This image has been resized. Click this bar to view the full image. The original image is sized 1219x562.1) Above I have highlighted the speaker terminals that are most commonly used,In light Blue I have marked the Front or main speaker connections. These are to be connected to your front Left and Right speakers the red terminal is the positive and the black is the negative (do not reverse these or you can cause problems but it wont damage anything).Now you need to know what Ohms your speaker is (this is important) look at the back of the speakers where you connect the wires and there should be a label saying what wattage and Ohms they are the Ohms symbol looks like an upside down horseshoe and will usually be 8 or 4 ohms. write this down for use later.Now here is where the confusion starts so just follow these instructions and you will be fine:2) With most home theater receivers that are newer they have either either 5.1 or 7.1 channels and you need to know what you intend to use, in small theater rooms (less than 180sq ft) a 5.1 speaker system will do just fine. If you have a larger space then it may be necessary to use all 7 speakers This also depends on if you have one or two rows of seating.Here is a link to a diagram of what a 5.1 speaker layout should look like. You can also place the side speakers on the back wall as well but keep the at least 4ft apart.Here is what a 7.1 speaker layout should look like. Again the back speakers should be spread apart at least 4ft not what the diagram shows (I will explain later why).Ok, now that we have decided what we have for a speaker layout if you receiver is 7.1 channel and your going to use all 7 speakers skip to point number 4, if you want to only use a 5.1 speaker setup continue on to next point.3) On receivers with 7 speaker connections you will not be using the 6th and 7th speaker terminals usually labeled "Rear speakers" or "Surround back" seen in light green in the picture. On a 5.1 channel only receiver you will use them.The confusion always seems to be because most people have there speakers placed on the rear wall and the label on the receiver is not worded this way.The surround channels need to be hooked up to the terminals labeled Surround side seen in Yellow. If you leave these blank and hook the speakers up to the rear surround terminals the receiver will not (in most cases) send any sound to them when listening to movies. Continu to hook up the centre channel speaker as well labeled red and finaly connect the subwoofer to the line output labled sub out shown in dark green.4) For a full 7.1 surround experience you hook up all the speakers to the appropriate terminals shown in these colors:Front speakersCenter channelSurround sideSurround backSubwoofer (connect to line out rca jack)5) Ok, now you have the speakers hoked up. Now what. Well if your receiver has on screen menu capabilities the next step is to hook up the display.You will need to know what your display has for a connection but for most people it will ba a flat screen with a HDMI (High Definition Media Interface) input.If you have an older display it may only have component (Red Green and Blue connectors) or even a S-Video or composite input (Yellow).Lets assume you have HDMI run a HDMI cable between the receivers HDMI out seen in Dark blue on the far left of the picture above and your displays HDMI input.Select that input on the display and turn on the receiver (you will need to check the receivers manual for more detailed instructions)Go into the receivers setup menu (at first you will have to use the display on the receiver) and select HDMI out "On" so that it will output your receivers menu through HDMI.Now this is where you need to remember the Ohms rating on your front speakers that I had you write down earlier. Go into the Speaker settings section of the receiver and find the setting that adjusts the Ohms to match what you have. Select the closest one available in the menu sometimes it only gives you two choices 6 or 8ohms (for 4ohm speakers select the 6ohm setting if there is no 4 listed).Note: this setting may also just be a switch on the back of the receiver.Most newer receivers have many different surround modes (to many to list) and we will leave this for another post. what you need to understand is that some modes are more useful than others and may or may not work well for music and movies. just because you have 5 or 7 speakers set up does not mean that music will sound right if using a mode that sends it to all the speakers. It takes time to find what you will like and dont get frustrated if you dont like what you hear right away.earlier I stated that the rear speakers should not be placed together like in the diagram THX recommends This is because the rear channels are in stereo and work better spread apart particularly now with the newest movies using them much more than ever before.Read more: How to hook up your receiver properly - Home Theater Forum - Home Theater Systems - HomeTheaterShack.com http://www.hometheatershack.com/forums/system-setup-connection/16175-how-hook-up-your-receiver-properly.html#ixzz0gas1gEsD
