Sign in   |  Join   |  Help

S 45-2 bass driver issue

rated by 0 users
Answered (Verified) This post has 2 verified answers | 56 Replies | 3 Followers

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava posted on Wed, May 16 2012 4:36 PM

I found out that I have a pair of S45-2 with stucked bass drivers. Obiously loose magnets, and no more spares aviable. Donator speakers are not an option to me, it still leaves me with pair of speakers wiht broken basses, and that bugs me for sure.

So,  I have to do something about it.

 blah-blah and photographs as needed

Answered (Verified) Verified Answer

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Answered (Verified) Orava replied on Mon, May 21 2012 6:35 PM
Verified by Orava

And here they are, with their new friend, Beocenter 3300. Reglued, recapped and cleaned.

And sounding Good, as you can hear. I guess I have to put my small Linn speakers aside now. Alltough they are about same side, they clearly lack bass, but their high register is exelent. Anyway this time B&O wins.

This reglueing isn´t so hard afterall, pretty straighfoward mechanical job. Maybe messy with all that glue, time and space consuming, but at the end I think it´s rewarding. And compaired to hunting (good) donator speakers, or equalent new drivers, this may be even easier to do.

 blah-blah and photographs as needed

Ricardo
Top 200 Contributor
Moonbase 5
418 Posts
OFFLINE
Bronze Member
Verified by twowheel2001

Slight delay due to issues with the Crossovers on both speakers. Somebody got stupid and put a bit too much load on these guys I think

 

All Replies

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 4:44 PM

First, lets have a look inside, not much can be done from here.

I put a plastic sheet between centerpole and voicecoil to prevent any damages, then drive "stuck" on it.

Well, if it isn't broke, you can't fix it. So lets break it.

Supporting magnet on edge of table, "stucked" side down , I tap "gently" with screwdriver and hammer to break backplates glue, and backplate can be slided off. Slided, cant lift.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 4:47 PM

Now we see more.

Centerpole can be removed.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 4:51 PM

And magnet also.

Then to electrical parts, first wires.

Couldn't melt the glue, so have to cut my way here.

 

As you see magnet is back on its place. It is because voicecoil could easily get damaged othervice.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 4:55 PM

This was almost "Haven't a glue" situation. Surrounding comes off with bare fingers with no resistance at all.

Her it is. Bits and pieces.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 4:58 PM

And all cleaned up, ready for reglueing.

This is my favorit, Never has let me down.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 5:04 PM

First round, everthing centered, not too much pressure, I like to actually have some glue there.

It is easiest if backplate is in wise, few millimeters below toplevel, in that way, when magnet sucks down (and it does), you have still possibility to adjust shims if necessary. Shimmed in forehand, no otherway possible, and they must be off from backplate, we dont want to glue them there.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 5:07 PM

Removed from wise and pressed to end, ready to let dry under modest pressure.

Here it is. Reglued body of bass speaker! Yes!

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 5:13 PM

All electrical work back together again. I started cautiously with small dots just in case something goes wrong.

I tough that I did take pictures from assembling cone, but I can't find them, stange. Anyway there are lots of pictures from procedure (refoaming) on this site. Meaning jump to dustcap after testing that cone movement is fine.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 5:15 PM

What we have here? A S45-2 with happily woofing woofer!Big SmileBig SmileBig Smile Tested with YELLO.

 blah-blah and photographs as needed

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 5:15 PM

Caps? What caps?

 blah-blah and photographs as needed

Peter
Top 10 Contributor
Earsdon
11,977 Posts
OFFLINE
Founder
Moderator
Peter replied on Wed, May 16 2012 6:34 PM

Congratulations! Just about to send the woofer of my M100 off for similar treatment. Though seeing the size of the magnet, I think it will need a crowbar!

Peter

Orava
Top 100 Contributor
Finland
963 Posts
OFFLINE
Bronze Member
Orava replied on Wed, May 16 2012 6:50 PM

Thanks, one more to go.

M100, 10 inches?

 blah-blah and photographs as needed

Peter
Top 10 Contributor
Earsdon
11,977 Posts
OFFLINE
Founder
Moderator
Peter replied on Wed, May 16 2012 8:02 PM

12" - still looking for a suitable box!

Peter

tournedos
Top 10 Contributor
Finland
7,352 Posts
OFFLINE
Gold Member
Moderator

Brilliant work! First time I see somebody do something about those

--mika

Page 1 of 4 (57 items) 1 2 3 4 Next > | RSS
Beoworld Security Certificate

SSL