ok where does this go, loose piece on xover

[njsporto]

Have 2 mission 772 speakers. Ups dropped them a while ago, got an HD so I want to use now. I assume these shouldnt be loose

i248.photobucket.com/albums/gg189/njsporto/1009081825.jpg[/url]
i248.photobucket.com/albums/gg189/njsporto/1009081825a.jpg[/url]
i248.photobucket.com/albums/gg189/njsporto/1009081826.jpg[/url]
i248.photobucket.com/albums/gg189/njsporto/1009081826a.jpg[/url]

1) Any good speaker repair places in NJ?
2) If not, where is this soldered to? HF+?
3) what is a good way to resecure the piece onto the board?
4) Does the copper wire need to be wrapped tight against the piece?
4) DO I need to completely replace it?

Any help you can give would be great,

Thanks Greg

 

[mazersteven]

Next to your photo's on Photobucket it says "Direct Link" . Copy and paste that address so we can see your photo's.

 

[mazersteven]

Here are your photos

 

[Adam]

Can anyone help Greg out? This is his second thread on this, and so far no answers. Just asking, as I don't know the answers.

Thanks!

 

[mazersteven]

Ya where are the speaker technical members, and the speaker builder, DIY members?

 

[zumbo]

PM Spkr_Bldr
http://forums.audioholics.com/forums/member.php?u=35236

 

[Adam]

PM Spkr_Bldr
http://forums.audioholics.com/forums/member.php?u=35236

Good suggestion. Just a note to the OP - I think that you need a total of five posts before you can send a private message to someone.

 

[mazersteven]

Where is???

WmAx
avaserfi
TLS Guy
Mark Seaton

 

[Swerd]

Just a guess from looking at the photos.

Try touching the unattached wire from the loose coil to the solder blob where I drew the red arrow. See if that makes the speaker sound normal.

 

[Adam]

Another idea is to e-mail Mission and ask them to help you. Surely they have a diagram or photo of that crossover network.

Direct link to their service contact: nikki@iaguk.co.uk

 

[mazersteven]

Maybe contact the guys here

www.skiingninja.com

 

[avaserfi]

It's hard to tell from the pictures. If I were in your position I would first, clean off the extra glue from where the inductor was glued. Then I would try to rewind the inductor as tightly as possible (similar to the other unit) then in the last picture mazer has up you there is a blob that has nothing soldered to it thats the one...Make sure this works by running the speaker with it like this. Re-glue with a hot glue gun and you are good to go.

I can't guarantee this will work, but it seems like the point where contact was lost based on your pictures.

-Andrew

edit: Man you guys are fast. You could have just PMed me and told me about this thread .

 

[Kaminari Sound]

Repairing Mission Loudspeakers

Hello!
<p>
I would love to fix your Mission's if we were in close proximity, so in lieu of the distance- how adept are you with a soldering iron, Hot melt glue gun, and lastly ~ patience?<p>
First, completely Desolder and remove the choke coils that came loose from the crossover board.<p>
Second, rewrap the coils as close to the wrap that the factory provided as possible. Paying attention to leave the lead out wires in a distance to drop back into their respective holes.<p>
Third, drop a bead of hot melt along the length of the coil to hold the windings back in position. Do not worry about the hot melt glue as it carries no magnetic/electrical properties. It will not cause interference. However, don't completely cover it with glue either. You still want it to dissipate heat.<p>
Fourth, clean the ends of the lead out wires using sandpaper or another means or similar nature. You want to make sure there is a clean soldering point. The coating on the wire is an electrical insulator to keep the wire isolated while being wrapped in a coil.<p>
Fifth, remove the old hot melt glue from the mounting location as best as possible.<p>
Sixth, clean the solder joints out with the tip of your iron. Utilizing some fresh solder, redo the connections.<p>
Seventh, drop beads of hot melt glue around the base of the coil on the board.<p>
Hope this helps! Any additional questions, feel free to contact me<p>
Also, if you are willing to ship the crossovers only~ I can rebuild them for you and possibly even upgrade if desired.<p>
Good Luck, ~Ryan~

 

[Adam]

A big thanks to all of you who joined in to help the OP out!

 

[njsporto]

Thanks for the feedback so far, Ill have to see if the solder bump looks like thats the place it broke away from.

Not sure if attaching it back will hurt the speaker if it has power??

Also, I would have posted the links but dont have 5 posts yet... didnt want to do stupid posts just to get post count over the 5

 

[Phil Taylor]

Thanks for the feedback so far, Ill have to see if the solder bump looks like thats the place it broke away from.

Looking at the pics I'm certain it broke loose from the same place indicated by the red arrow and yellow circle in the pics posted above.

Not sure if attaching it back will hurt the speaker if it has power??

It won't hurt the speaker as voltage at the speaker is not enough to really hurt anything - but it's just a good general rule of thumb not to solder on active components - so disconnect it first and follow the very nice how-to posted by Ryan above.

Also, I would have posted the links but dont have 5 posts yet... didnt want to do stupid posts just to get post count over the 5

That's very thoughtful and considerate of you but you wouldn't be the first (nor last) to make stupid posts on this forum...

 

[yettitheman]

I don't have a multimeter on me or a crossover at work right now, but I would not be touching the end of that coil to any part of that board while it's hooked up to the amplifier.

I would short either the binding post end or the speaker terminal end(s) together with wire and use a meter on the end that isn't shorted with wire and measure using ohms. I forget how the meter will react with a coil and capacitor in a circuit; if I had one on me, I would test it for you and show you what to looks for.

But use the meter, and touch the coil to the suggested terminals. I'm curious.

 

[Haoleb]

You'll be able to tell quite easily where it goes without poking around with it connected to the amplifier. I would not reccomend trying it that way. It looks like it went right where everyone has been saying. Worst case, Just open up your other speaker and look where it went

If you dont want to do that just melt the solder where we've highligted, there will most likely peice a small peice of the wire there.

 

[njsporto]

Good news so far

Hi all ,thanks for the great info.

Some update: for one, both speakers have this component dislodged

2) The mission service persons address I got from here was perfect, they sent me the wiring diagram for the xover.

3) One of the EEs from work is going to resolder/mount the components for me. SO next week I should have working speakers (assuming nothing else is busted when UPS dropped em)

You guys rock, thansk a ton for the help....


Too bad Mission no longer sells the speakers here, I love their look and sound and would stick with them in the future.