Do phono sockets have 2 wires if you chop them off?

Richard10002

Richard10002

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Hi,

I've just bought some phono plugs to fit to the ends of the speaker wires for the new JVC car stereo/DVD system.

However, I see that they need soldering and I'm not sure of my ability at this micro level so... I'm thinking if I chop the phono sockets off the back of the radio etc... I should find 2 wires for each phono socket.

Is this the case? If so, i can crimp the speaker wires to the phono wires, (I've got a fairly serious crimping tool, so can be reasonably sure of good connections).

Many Thanks

Richard
 
[ QUOTE ]
... I'm thinking if I chop the phono sockets off the back of the radio etc...

[/ QUOTE ] I hope you won't need to claim under the warranty /forums/images/graemlins/smile.gif.

Maybe you can check the wiring to the sockets before you prune them. Make sure there's two wires and that they will be long enough for you to make the crimp connections. Make sure you connect the two pairs of wires correctly or the speaker phasing will be wrong.
 
You'll probably find that the phono sockets are soldered directly to the Printed Circuit Board. That is the usual method of hi-fi construction these days.
Phono sockets are not hard to solder. Use a small file or a bit of sandpaper to scrape the coating at the tip of the plug and around the hole in the earth connector.
Tin the end of positive wire first with solder before feeding down the barrel.
Use a well tinned hot Iron very quickly to avoid melting the plug.
They are pretty cheap. Buy a few plastic types to practice on first...about 10p each from CPC or maplin.

Steve.
 
And can add that it is likely to be very much easier to solder connectors than it is to pull a automobile stereo/DVD unit apart and put it back together again.

John
 
Agree it will not be easy to open up the stereo and remove the sockets.
if by phono you mean the headphone output. Then more often than not the socket includes switching to disconnect the speaker output so there will be more than 2 wires.
So recommend you have a go at the soldering of the plugs. olewill
 
[ QUOTE ]
You'll probably find that the phono sockets are soldered directly to the Printed Circuit Board.
Steve.

[/ QUOTE ]

I think I may not have been too clear:

From the back of the unit are several speaker and video wires with phono sockets on the end of each wire, (e.g. Left and Right Rears, Left & Right Fronts, Centre... also Video In, Video Out, Audi 2 Out etc...). What I propose is to cut the wire close to each speaker phono socket, hopefully finding 2 wires coming out of the wire, (they actually look like single wires, but I am guessing that they must enclose 2 wires to connect to the phono socket).

So, having cut the sockets off, I will have a wire for each speaker, of around 6 inches long, to which I can crimp the speaker wires.

i have no intention of dismantling the unit.

Cheers,

Richard
 
Ohhh! Now you tell us /forums/images/graemlins/smile.gif.

Would suggest don't bother crimping them - just use a chocolate block type connector strip (the things that looks like a row broken off a cake of chocolate with holes each side to poke the wires in and screws on top to screw down onto the wires).

Apart from doing the job is easy to undo again in the future. Is what I and others do with no problems.

John
 
/forums/images/graemlins/cool.gif Right where I belong /forums/images/graemlins/smile.gif

Could add one thing is they usually have plated steel screws in them, but never found them to be a problem in dry boats and probably no worse than the bits inside the DVD unit for corrosion.

Prob not recommended for whizzy openish power boats that venture out in F10 and get wet through, but for more cozy gentlemanly boats ok.

(Do you think that will introduce enuff contention? /forums/images/graemlins/smirk.gif)

John
 
I'm just trying to think , do I know of any boats in the UK that are dry , mmmmmmmm , nope , sorry John , but over here they're wetter than a , erm , maybe not on here , but you know what I mean
 
I really would not do this. Having just bought a JVC DVD to replace my Blaupunkt (wish I had done this earlier). I have bought a KD-DV6202 far superior unit to the whole collection I have been through. I am finally happy and realise there is no such thing as a cheap DVD player for use on a boat.

Are these for the 2nd audio out to connect to your television, if so you can buy cables, many computer type outlets especially the market trader type will sell you longer leads.

If you start connecting as you suggest you will get no end of problems including noise. Someone is bound to come on and say, oh, I just twisted the wires together and wrapped them in insulation tape.

Ask yourself why a. professionals use phono plugs and anyone who knows anything about HiFi does not use chocolate box connectors for audio connections.

When you cut these cables you will find the inner is extremely fine, after four goes at fitting to a chocolate box connector each time snapping the wire, you are going to end up with an inch of wire to play with as you have to keep stripping it back.

Have a look under maplins cables header, there must be something to suit.
 
[ QUOTE ]
Ohhh! Now you tell us /forums/images/graemlins/smile.gif.

Would suggest don't bother crimping them - just use a chocolate block type connector strip (the things that looks like a row broken off a cake of chocolate with holes each side to poke the wires in and screws on top to screw down onto the wires).

Apart from doing the job is easy to undo again in the future. Is what I and others do with no problems.

John

[/ QUOTE ]

Sorry!

I've bought some bullet connectors, so they should come undone fairly easily.

Chopped one phono socket off and it's a red wire with a shield. Cant make the thin wirestay in any of the crimp connectors I have, (red, yellow and blue), so I may have to use your chocolate block idea.

Many Thanks
 
[ QUOTE ]
I really would not do this. Having just bought a JVC DVD to replace my Blaupunkt (wish I had done this earlier). I have bought a KD-DV6202 far superior unit to the whole collection I have been through. I am finally happy and realise there is no such thing as a cheap DVD player for use on a boat.

[/ QUOTE ]

Agreed re: quality - I've got the KD-AVX2 working with 2 temporary front speakers and it is fabulous. even the picture on the 3.5in screen is good

[ QUOTE ]

Are these for the 2nd audio out to connect to your television, if so you can buy cables, many computer type outlets especially the market trader type will sell you longer leads.


[/ QUOTE ]

no. I've bought one of these cables for the TV


[ QUOTE ]
When you cut these cables you will find the inner is extremely fine, after four goes at fitting to a chocolate box connector each time snapping the wire, you are going to end up with an inch of wire to play with as you have to keep stripping it back.

[/ QUOTE ]

You are, of course, correct. On the one I've chopped, it's as you describe. I should be able to sort it, but I wont be chopping any others just yet!

[ QUOTE ]

Have a look under maplins cables header, there must be something to suit.

[/ QUOTE ]

I've had a look and cant find anything to get speaker cable into a phono plug without soldering. I wish you could get phono plugs with a bit of decent wire ready fitted, so you could just crimp connect.

any ideas welcomed!

Richard
 
I wonder if I could buy say a phono to 3.5mm mono jack, and cut the jack off?

I guess I still end up with thin screened cable, but at least I would have more to play with.

Richard
 
For the speakers that you asked about, the cable does not need to be screened. So if the conductor as found in the cable you have cut is of sufficient dia to be held in a small choc block connector strip (and for the speakers I would expect so) then just run figure 8 auto cable to the speakers. But only for the speakers.

Better still if Woofy can do it properly for you.

John
 
Are you sure you are looking at the speaker level output of the unit? I am no expert on car stereos/DVDs but the last stereo I fitted a couple of years ago had a multiway plug for which you can buy a socket to flying tails (bare ended wires) this contained power in, speaker out (left right, front, back). The two phono sockets on mine were to drive an an external amplifier.

Have PMd you

David
 
[ QUOTE ]
For the speakers that you asked about, the cable does not need to be screened. So if the conductor as found in the cable you have cut is of sufficient dia to be held in a small choc block connector strip (and for the speakers I would expect so) then just run figure 8 auto cable to the speakers. But only for the speakers.

Better still if Woofy can do it properly for you.

John

[/ QUOTE ]

Not sure I understand? and I didnt mention any speakers... the ones I'm using are Kef Eggs.

1) the cable has a single core with a screen around it. The screen connects to the -ve peaker cable and the core to the +ve, (I presume that is the correct way round?). So the screen seems to be necessary?

2) what is figure of 8 auto cable?

3) who is Woofy?

Cheers

Richard
 
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