Question about Legacy LSW157 Car Subwoofer

2 Answers

Why does my Legacy LSW157 sub-woofer have 2 inputs?

I bought it second hand and have no instructions with it!

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  • mrmick1972 May 15, 2009

    I don't know why the end was cut off but it di as why the speaker has 2 inputs!



    It's a 4000 watt 4 ohm dual speaker with no instructions!



    Cheers everyone!

  • mrmick1972 May 15, 2009

    Ended!

  • Sphynkter
    Sphynkter May 11, 2010

    Hi,

    could you clarify your question? I don't understand what you're looking for. It looks like your question was cut off... 2 what?

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2 Answers

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If the sub has 2 inputs it has dual voice coils(DVC). If you are trying to wire it to an amp there are some great diagrams here:

http://www.crutchfield.com/S-033hRkzRe0K/learn/learningcenter/car/subwoofers_wiring.html

Just make sure you select the DVC options.

Posted on May 14, 2009

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This is called a dual voicecoil subwoofer.

It gives wiring flexibility.

While playing only 1 voicecoil is possible - it is not recommended.

They should be wired to match your amplifier.

If it is 2ohm Mono stable - you can wire both positives and both negatives together to the amplifier so it sees a 2ohm load (parallel wiring)

If your amplifier is not 2 ohm mono stable - you have no option but to either wire up 1 set of coils... or wire them in series.

+ on amplifier to + on coil1
- on coil 1 to + on coil 2
- on coil 2 to - on amplifier

This will yeild an 8ohm load for your amplifier.

Good for sonic clarity - but you will not get the full potential from your amplifier.

Thanks for using FixYa - A FixYa rating is appreciated for answering your FREE question.

Posted on May 14, 2009

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Posted on Jan 02, 2017

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1 Answer

I want to install a self powered woofer and tap it to the rear speakers. Can you please tell me what are the colors and polarity of the rear speaker wires for 2006 Honda odyssey right hand drive


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A WOOFER LIKE THIS ---- IS THIS A STORE BOUGHT POWERED SUB WOOFER ? DOES IT HAVE IT'S OWN CROSSOVER BUILT INSIDE ?? I WOULD GUESS IT NEEDS TO BE HOOKED
UP TO A SUB WOOFER OUTPUT FOUND ON THE BACK OF THE IN DASH PLAYER ..
THE WOOFER NEEDS TO RECEIVE ONLY LOW FREQUENCY AUDIO WHICH MOST OF THE NEWER CAR STEREOS PROVIDE BY AN RCA JACK ON A SHORT WIRE COMING OUT OF THE STEREO ...
IF YOU TRY AND TAP IT TO FULL RANGE SPEAKERS THAT ALREADY ARE CONNECTED TO AN AMPLIFIED SIGNAL THE SOUND WILL BE DISTORTED .......
POWERED SUB WOOFERS NEED A LINE LEVEL INPUT WHICH IS MUCH LOWER THAN SAY
SPEAKERS ALREADY RECEIVING AN AMPLIFIED SIGNAL.
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There is not a subwoofer input jack on the back of this subwoofer. There are a set of input (negative and positive) terminals and a set of output (negative positive) terminals like would hook speaker wires...


On the back of the sub woofer you have two sets of binding post / some have spring clip terminals ( red & black ) labeled Speaker In ( sometimes High Level In ) and Speaker out.
Take 2 pairs of speaker cables and connect one end to the speaker out socket of your amplifier ( left & right ) . The other end of the cable should be connected to the sub woofer's Speaker In socket , Red to red and black to black. Now on the Speaker Out socket of the sub woofer connect your existing pair of speakers using another pair of speaker cables. If your sub woofer has a Hi Pass filter built in , you may not hear bass coming from your existing speakers with this kind of connection. Good if you have small satellite speakers.

Mar 12, 2011 | Audio Players & Recorders

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How it can be connected to a stereo amp


hi,
if ur amplifier have a pre out, then u can connect that to ur L/R input of ur sub woofer.

if not the only way is, connect ur amplifiers speaker output to sub woofers speaker input and then connect ur speaker to sub woofer speaker output terminal. remember don't inter change positive and negative wires.

if ur amplifier have speaker A,B connection then it is very easy. connect the speaker A to ur left and right speaker. then connect speaker B to ur sub woofer's left and right speaker input. be sure to make that speaker A and B switch is in on position. the power on both and check it. ( use good quality speaker cable to connect the sub woofer)

your sub woofer is designed to work , both at low level and high level input.
ok

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You are trying to connect the powered sub output of the receiver to a standard (unpowered) subwoofer. Can't be done.

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YAMAHA AV receiver RX-V861 I have the message 'Vol-fix' appearing on Zone 2 and no sound. This was working fine until then


Setting the RX-V861 remote control to operate Zone 2:
  1. Using a ballpoint pen or similar object and press the [CODE SET] button RX-V861 remote control. The[TRANSMIT INDICATOR]on the remote should flash twice.
  2. Using the [NUMERICAL KEY PAD] on the remote and key in 9992, the [TRANSMIT INDICATOR] should flash.
Assigning the receivers internal amp for Zone 2:
  1. Set the remote control selector to [AMP]. (Located to the right of the volume buttons on the Remote.).
  2. Press the [SET MENU]button on the remote control.
  3. Arrow down to Manual Setup and press the Enter button on the remote control.
  4. Arrow to the [SOUND MENU] option and press the [ENTER] button on the remote control.
  5. Arrow to Speaker Set and press the [ENTER] button on the remote control.
  6. Arrow to the EXTRA SP ASSIGN and select ZONE2
  7. Press the [RETURN] button on the remote control to exit out and return to the Manual Setup.
NOTES: There is an option for setting the Maximum Volume and Initial Volume in the Zone Set menu.
  • Max Volume: This is an optional feature but isrecommended to prevent the accidental change in volume levels thatcould damage the speakers and receiver.
  • Initial Volume: This is also a great feature that would seamlessly start the volume level for the second or third zone at the desired level.
We do not recommend using any Speaker Selector boxes to enable more than the recommended number of speakers per terminal.
Controlling Zone 2 using the RX-V861 remote control:
  1. If the Main Zone on the receiver is on, press the [POWER BUTTON]down and while holding that button down press the [PHONO]/[**] button on the remote. The [TRANSMIT INDICATOR] will light up.
  2. You will not be able to use the following buttons on the remote: (Pressing any other button will cause the remote to exit Zone 2 mode. [POWER], [STANDBY], [VOLUME], [MUTE] and the [INPUT SELECTOR] buttons [DVD], [CD], etc.)

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There are the instructions as written straight from yamaha. If you need any further assistance please let me know.
Thank you,
Lee

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1 Answer

Ohm calculations; 4 and 8 ohm sub woofer?


+ output from amp to + input of 4 ohm to + input of 8 ohm AND - output from amp to - input of 4 ohm to - input of 8 ohm is a parallel circuit = 2.66 ohm impedance load for amp
+ output from amp to + on 4 ohm - on 4 ohm to + on 8 ohm - on 8 ohm to - of power amp is a series circuit = 12 ohm impedance load for amp. Clear as mud??
Clear as mud?

Jun 11, 2009 | Jl Audio 12W0 Car Speaker

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Subwoofer to receiver hookup


In general, there are two ways to hook up your sub-woofer. First using the high level outputs from your receiver ( speaker output from the front R & L speaker terminals ) run a set of wires from the outputs to the speaker inputs on the sub-woofer, you do this in concert with the speaker wires going to the front R & L speakers which you then attach to the R & L speaker outputs on the sub woofer amp. Note that the sub woofer doesn't power your front speakers, the connections from the sub amp are just a pass through connection where the signal needed by the sub is parasitically taken from the inputs.
Second is via a low level output from your receiver / amp to the low level input on your sub amp. This is normally done via a RCA type of patch cable and connected to the sub woofer RCA jack on the rear of the source receiver or amp, Next run the patch cord to the sub amp an into the RCA jack input. IF you have a right and left input, use the Right input.

john

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1 Answer

No sound out of woofer


Hello sparkie102
Happy Holidays
you have to check if all the cables are well connected, and in the right inputs. 2) check your software for sound that is enable, fine.
turn up the sub volume , if got it independent.
other that this, is a failure sub. if got warranty, use it! or RMS your sub.

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