Question Iwant to know how to hook up this dual 4 ohm solo baric so i can get max eficiency from my amp its a 2 channel
rated 4ohm stable x1 and 2 ohm stereo my friend had it and he pushed it to 2 ohms mono and he could tell it was workin hard but it took the abuse.....so really i wanna power both coils from the stereo mode and i dont wanna damage the sub do i have to have the timing and signal and wattage exactly the same or what should i do .. thanks for your help and interest in they area,,,,,,J
AnswerHi Justin,
Sorry about the delay in answering.
Basically, you have three options for wiring this sub:
First, you could wire the voice coils in parallel and connect it to the amp in bridged mode. This would result in a 2-ohm load for the bridged amp, which might cause some problems and possibly shorten the life of the amp. However, it's the only way to get the amplifier's maximum rated power when used with that subwoofer.
Second, the option that it sounds like you're considering; connect one voice coil to each amplifier channel, so that the sub is connected in stereo mode. This gives you the 4-ohm rated output of the amp. For example, if the amp is rated at 75 watts per channel at 4 ohms, then the sub will be getting 150 watts.
A disadvantage to this option is wiring difficulty. The main problem is that most single subwoofer boxes just have one set of terminals. If you're going to have separate connections for each voice coil, you may have to modify the box.
It sounds like you're concerned about making sure each voice coil gets exactly the same signal and power level in this configuration. You don't have to be too concerned about this. Most 2-channel amps just have a single gain control, so you can't adjust the left and right channels separately in any case. It's not really a problem because the bass portion of most musical tracks is effectively mono. There's no difference between the left and right signal at subwoofer levels except in rare cases. However, even if two voice coils are getting different signals, it's not going to hurt the sub. It will just affect the sub's output.
The third wiring option is to wire the voice coils in series, and connect them to the bridged amp. This will result in an 8-ohm load. The power output will be similar to that of the 4-ohm stereo wiring configuration; ie, an amp rated for 75 watts per channel at 4 ohms will usually be capable of 150 watts at 8 ohms in bridged mode.
Wiring the system this way will reduce the wiring difficulty due to the box design. It will also ensure that each voice coil receives the same signal and power level, so you won't lose any output from signal cancellation. Another advantage is that it would be easy to add a second subwoofer later on.
Thanks for your question!
Brian
