If you set the ohm switch on low, can you bi-amp a set of 4 ohm tower speakers? Would the A terminals drive the mids and highs, B's the lows?
74313
There is no advantage to doing this. The amplifier's "A" and "B" outputs are driven from the same output stage (the speaker outputs are in parallel when used simultaneously). The output stage of this unit is not discrete (the same pair output transistors drive both "A" and "B" set of outputs). Therefore, if you separate the shorting bar on your loudspeakers that connects the woofer and mid/high terminals, and wire the mid/high terminals to output "A", and the woofer terminals to output "B", this would have the same effect as simply leaving the shorting bars of the loudspeakers intact, and wiring the loudspeakers to output "A". Note that when you use the "B" output, or "A" and "B" together, the damping factor of the output stage will decrease slightly. Using the "A" output terminals only, the damping factor is &gt;180 (which is good). If you have a secondary, discrete amplifier, you can then obtain some advantage by bi-amping the speakers. For instance, if you had a high quality vacuum tube amplifier, you could wire that to the mid/high terminals of your loudspeakers, and the Yamaha to the woofer terminals of your loudspeakers. Short of using a secondary, discrete amplifier, you would not net any audible improvement. If you only intend to use the Yamaha, leave the shorting bars of the loudspeakers intact, and connect them to the "A" output. Set the impedance selector switch to LOW while the power is OFF.
65066
you can wire the sub as low as 1 ohm and the speakers to 2 ohm i believe on this amp. so yes you can do 2ohm for the sub "which would be a dual 4 ohm or dual 1 ohm dvc" and do your front stage at 4 ohms.
428912
They're supposed to be 4 Ohms even though the back says "4/8 Ohms" but in reality they're less than 4 Ohms - a tad under 3.5 Ohms. unless your amp/reciver can tolerate resistance of 2 Ohms which very few can, don't wire them in parallel with an 8 Ohm speaker. I did and it almost fried my receiver.
744095
Sure. That should work ok. Wire your 4 ohm speakers in pairs in parallel and terminate on each of the 2 inputs. The switch has impedance matching settings as you increase the number of speakers. Terminating more than 4 wires will be the challenge under the terminals. Oh by the way. This switch was under $30 just 2 months ago, not $47 today.
803656
Oh and I read other comments. About putting to 1 ohm. Bad idea. That's what I did. To my 2 15" boss subs and exploded the ass end of them. Then I bought two 15 3600 watt pyles and they work perfect. Lots I bass. And can handle more.
875096
Not sure. what you are asking... these are two way 4 ohm stable. hence you can hook up mids and tweets and keep it at 4 ohms so as not to blow them. I am sure you could use other cofigs to change the ohm setting they are just a basic crossover set like the ones you build. They are nice and worth the few dollars they cost. you cant buy the parts separately or as cheap as they are.
44246
Four speakers (2 pair) at once yes. Four pairs no. Total resistance should not drop below 4 ohms with most amplifiers.
256901
In bridged mode, I don't doubt it can. BUT I cannot say it will manage at 1 ohm. If you want it to give you a hard clean drive, wire speakers at 4 ohms and bridge it. Also make sure you have some strong amperage in your power supply...I am thinking you have dual coil kickers...I would recommend putting each speaker in 8 ohm mode then parallel them together to achieve the 4 ohm I previously mentioned.
886003
I wouldn't use this unit. It will not drive 8 ohms speakers even though it's rated 90W. Also if you don't connect both channels it will severely overheat. Must be the way the amp is designed.
334666
Hello. I have two amplifier ( stereo 80 w per chanel and a vacum tube amplifier 30w per chanel) and 3 pair of speakers. 1 pair 120 w 8 ohm, 1 pair 100w 8 ohm and 1 pair 100 w 6 ohm. This switch works well. I don't have a problem.
2237428
Using two 16 ohm would be the same as using four 8 ohm. You would be getting about 30 watts of power to the speakers. That is not much!
1702531
what is the true ohm load at 4ohms and would it really push 4- 15 pa speakers with power to spare?
568062
The ohms on the speaker doesn't make an difference in how it sounds but it makes an great difference when it comes to the amp the lower the ohm load the amp reads the more watts it will put out. But since you an 2 ohm stable amp get the dual 4 ohm sub an put the sub in parallel( positive to positive an negitive negitive) that will give you a 2 ohm load for the amp
956114
I'm no expert, and don't know what they mean by 4 ohm topology. Generally, the 4 ohm amp would be underpowered trying to drive 2 ohm speakers. Should be ok at low to moderate volume but high volume could overheat the amp. You should ask on a car stereo forum.
792372
This amp is stable to a 2 ohm load in a stereo configuration and 4 ohm load bridged. With four speakers with four ohm voice coils it can be done, even with 8 ohm coils but it will put out less power that way. Take two speakers positives and connect to one positive output on the amp and do the same with the negative speaker wires to the negative amp output. This is called hooking your speakers up in parallel, it halves the ohms so the amp will see only 2 ohms. Conversely if you hook up speaker one's positive wire to the amp positive output, then hook that speakers negative to speaker two's positive and then speaker two's negative back to the negative output on the amp is called hooking them up in series. It doubles the ohm load and the amp would see an 8 ohm load from two 4 ohm speakers and put out even less power/noise. This bit of knowledge is needed to know what impedance speakers you need to buy for the amp you want.
1637966
This amp has four channels if you are only using two channels it will be 4 ohms per channel.If you are using all four channels it will be 8 ohms per channel.Ensure that the speakers are wired accordingly(most likely series parallel as you have 8 speakers most likely of 8 ohms).The ohms at the amplifier terminals can be higher than 4 ohms per channel but never lower (in 2 channel mode).
619504
Thank you for asking. The powered outputs on this are stable down to 4 ohms. As long as the impedance on your speakers is high enough the amp will be ok. If the speakers are rated to the right power they will be safe as well. Have a great day!