Can i replace my 6 ohm Sony SA-WM500 sub woofer with a Boston 4 ohm dual voice coil sub woofer? Don't know much more about the amp. It produces 150 watts RMS @ 6 ohms. The Boston can be switched to 4 or 8 ohms but not 6. Sub sounds good at 8 ohms but weaker. Would switching to 4 ohms blow up the amp and or speaker or would it be ok as long as the volume wasn't pushed up too loud?
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Re: replacing sub speaker
I wouldn't try reinventing it by replacing the driver. Drivers and their enclosures are designed to work together. And this being a self-amplified subwoofer, there is one more piece that's electrically optimized to the rest. Don't mess with it.
Why don't you just set your receiver's individual relative speaker volume levels so the sub isn't weak by comparison to your other speakers? Weakness, as you call it, is relative.
Is your receiver properly channeling Low Frequencies to the sub? Experiment with the cutoff, too.
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First of all.
Using two different kinds of sub woofers, is not an option, as these two sub woofers have different specifications and you should never mix sub woofers.
Now the better choice from the 2, would probably be the Rockford. (cant be sure without knowing the models, power handling is also a factor in how well either of the sub woofers will play, but Rockford as a rule makes better sub woofers than Sony does)
In my opinion, both the sub woofers deserve a better amplifier than what Boss has to offer.
However to connect either of these sub woofers, you would need to determine how many voice coils it has and how many OHM the voice coil/s are.
If it is a DVC (dual voice coil) and each voice coil is 4 OHM or 2 OHM, then you can connect one voice coil to one channel of the amplifier and the other voice coil to the other channel of the amplifier. If it is a DVC 2OHM you can also connect it wired in Series/Series to give a 4OHM load and should be connected to the BRIDGE dedicated speaker outputs of your amplifier.
If it is a SVC (single voice coil) and it is 4 OHM, then you can connect the sub woofer to the designated speaker outputs of your amplifier that states BRIDGE.
DO NOT run the amplifier in BRIDGE mode at 2 OHM as this will probably damage the amplifier.
i have found the specs to your amp.
1. Amplifier connections: Lets make things simple. As we look at the amplifier speaker connections, we will number the outputs 1 2 3 4 from left to right for the top connections and again 5 6 7 8 from left to right for the bottom connections.
1 should be connected to a positive (RED) (+) on sub woofer A on voice coil (a)
4 should be connected to a negative (BLACK) (-) on sub woofer A on voice coil (b)
Now using a small piece of cable, connect negative of voice coil (a) to positive of voice coil (b)
Follow the same procedure for the other sub woofer using 5 and 8 as 1 and 4
This configuration should make the amp run at 4 OHM BRIDGED x 2.
i hope this helps.
test with a digital multimeter set to ohms. if you don't have one of those laying around grab a 9 volt battery and run wires from the 2 terminals on the battery to 2 of the terminals on the woofer. if the woofer pops out you are said to be "in phase" (even though it has more to do with polarity that phasing but regardless) which means the positive from the battery is on the positive of the woofer and the negative is to the negative. those 2 terminals on the woofer are a single coil and obviously the other 2 terminals are the 2nd coil. now depending on what impedance each coil is will determine how you have to wire it to be 4 ohms unless they are 4 ohm coils which means you just use one coil and it will be 4 ohms on that woofer.
take an ohm meter and remove wires from speaker...put meter in the ohms position...you will put a lead on each of the terminals of the speaker...you should have a reading of 2, 4, 8 ohms....you may also try to use the continuity test, same, but there will be a beep ....this basically ensures that the coil running through the speaker is still good, as one piece, otherwise it will get no good reading and this is usually from blowing the speaker or sudden high bass sounds....
Your PSW815 has 2 ohm dual voice coils allowing you to better match the impedance to your amp. Each voice coil is 2 ohms. If you wire them in parallel (both +'s together and both -'s together and then to the amp terminals), the sub presents a 1 ohm load which is too low for most amps. Wiring the voice coils in series (one + to the other - and the remaining + and - to the amp terminals) results in a 4 ohm load.
This link shows the wiring diagram for both options. If you know for sure that your amp is 1 ohm stable, use Wiring Option #1. If the amp is not 1 ohm stable, use Wiring Option #2.
Well, this means you have dual voice coil subs. These subs are for running one sub in stereo mode( meaning you can hook up a right and a left channel to one speaker). In your case you are using 2 subs, which all you have to do is run a jumper wire from one side of the sub to the other. Take your (+) and hook it up on the (+)on one side of the sub and take your (-) and hook it up on the (-) on the other side and run a wire from the remaining post to the other. And do the same thing on the other sub.
firt you clean the subwoofer with cleaner after that, check the subwoofer srrounding, no electrical wire ,mobile phone & electrical operated items is near ur subwoofer.
1. Do not use maximum volume of subwoofer.
2. Use only 65-85% volume of your sub woofer.