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Magneplanar 1.6QR ribbon repair/replacement

70.71.58.113
Posted on January 2, 2017 at 08:14:56
RalphH
Audiophile

Posts: 39
Location: Canada
Joined: May 6, 2002
 Hi folks. The ribbon on one of my 1.6s is be dead. I took it to a local repair shop here in Vancouver who do some work on Maggies but they said it has to have the entire diaphram replaced -they never took the sock off etc just measured the resistance on the tweeter terminals best I could see.

I live in Canada so it's potentially serious $ to ship to Magnepan - anyone know anything about this or have similar experiences?

 

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Ship from and back to Blaine. And..., posted on January 3, 2017 at 00:44:50
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 You know you'll drive down next beer strike anyway... eh? :-)
And fill the tank. Plus a half dozen gas cans.
You might even get 10 gallons of milk and 20 pounds of butter.

We head north of the border for sushi, falafels, dim sum, etc..

There are many shippers in Blaine just for your type of situation. Saves a lot of money.
Easy to document speakers' round trip crossing at border, no duty to pay.

 

RE: We head north of the border for sushi, falafels, dim sum, etc....., posted on January 4, 2017 at 17:43:39
andyr
Manufacturer

Posts: 12548
Location: Melbourne
Joined: September 2, 2000
 Are you telling me, DE, that you can't get this sort of tucker in the good ol' USofA?

Standard fare, just about everywhere in Oz. ;-))

Andy

 

Small U.S. border town near large Canadian metropolis., posted on January 4, 2017 at 19:22:16
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 We can get it, but it is better and closer north of the border.
We live a few miles outside a small border town.
Only a few restaurants. A couple Diner/Burger joints, an alright Thai place and a very good Mexican place. Oh, and a Burger King, but that doesn't count as food.

Thirty minutes to nearest town. Two and a half hours to nearest big city.

The crossing is close and there are many great ethnic food places just north of the border.

Andy, you Ozzies are missing out only having water border, no neighbors.
Or are you?

We fear our friends to the north will build a wall to keep out the Mango Mussolini.
We are truly sorry to all people of Earth. It only took 18.3% of U.S. population to do this.
The other 81.7%, plus the ones with voter's remorse, are very sorry.

 

RE: you Ozzies are missing out only having water border, no neighbors ..., posted on January 4, 2017 at 19:35:16
andyr
Manufacturer

Posts: 12548
Location: Melbourne
Joined: September 2, 2000
 Aah, we have borders between States though, DE. :-))

The border between New South Wales and Victoria (which is mostly a river - the mighty Murray river) is known by NSWelshmen as the 'Mexican' border ... and they call us southern riff-raff, Mexicans! ;-)) People don't get shot if they try to swim the river ... but they often drown - pertickly if they've had a few stubbies before they make the journey.

Then there is the border between NSW and the northern State of Queensland. This is good for us southerners (including NSW) because it keeps the rednecks in place.

Then we have 2 sea borders:
1. between Tasmania and the 'mainland'. Which is good bcoz that keeps most of the (inbred) Taswegians away from us 'normal' mainlanders. LOL

2. between "mainland Australia" and our eastern State. Which is bad bcoz it allows them to think "New Zealand" is a separate country!


Andy

 

Cheeky Kiwis!, posted on January 4, 2017 at 22:11:57
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 Not that kind of border.
This border has guns, cameras, radiation detectors, documents and questions.

It is really two borders, two different experiences.
Going north - cool architecture, check passport, Have a nice day, eh.
Going south - ugly military fortress, check passport, stony glare, odd questions.

Still worth it. The border wait is usually not too long.
Canada's immigration policies have brought amazing ethnic foods to lower B.C. Between Vancouver and the border are endless delicious choices. Plus Canada is kind enough to give us a 20% discount. :-)

Worth it for Canadians too. They pay high prices at home for gas, groceries, etc..
Even with the poor exchange rate, it is still cheaper to buy some things down in the U.S..


 

...odd questions, posted on January 5, 2017 at 06:50:02
grantv
Manufacturer

Posts: 7724
Location: B.C.
Joined: January 15, 2002
 We've had some odd questions.
"Where are you going and for how long?"
"Bellingham, just 2 days"
"What for?"
"Get away, do some shopping"
"You're going shopping for 2 days!?" with a weird stare. Although not as common as it was (horrible exchange rate), it's still a very popular thing for us Canadians to do some shopping south of the border. No idea why he would find it odd.
Definitely different going south vs. north, but then I am just coming home north bound.
The amount of cameras is staggering.
It is still worth shopping for some items in the US, but with 30% exchange rate, nothing like it used to be.

 

The next time you pass through..., posted on January 5, 2017 at 16:56:02
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 If you have time, contact me.
We can do lunch or dinner. My treat.
Ha, after I complain about our food choices, I invite you to eat.

You know Birch Bay, right?
You may not be old enough to have been part of Birch Bay's Canadian hay days.
During the sixties and seventies Birch Bay was a huge Canadian holiday spot.
As a teenager it was the best. Cruising hot rods and hot chicks.
The neighborhood that we live in was 95% Canadian owned until the seventies. The exchange rate changed that. My cul-de-sac has 9 homes, 3 owned by Canadians.

My Wife lived in Oyama before we got married. My son was at Giants Head Freeride the last few years.

You may still have my contact info from purchase years back.

 

RE: The next time you pass through..., posted on January 6, 2017 at 11:00:01
grantv
Manufacturer

Posts: 7724
Location: B.C.
Joined: January 15, 2002
 Oyama!? My ex's parents have a place there, have since the 70's, so I spent a LOT of time there years back. Owl's Nest resort area, the townhomes around the corner. Where did your wife live? Oyama is small, very.
I know well of Birch Bay (I grad'd in '82, with plenty of folk who went there), and am old enough for the hay days, but never have been somehow.
See other post re lunch, would be cool to meet up one day.

 

Oyama, posted on January 6, 2017 at 16:01:01
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 She lived on the east side of the valley, half way up the mountain.
A couple hundred acres. A huge log home, a couple regular houses, barns, tennis courts, swimming pool. A beautiful compound with incredible views.
Not her place, but her employers. She was their nanny, housekeeper and cook.

 

RE: Oyama, posted on January 7, 2017 at 07:07:42
grantv
Manufacturer

Posts: 7724
Location: B.C.
Joined: January 15, 2002
 Sounds nice, plenty or $ in this town, just none in my account. :)

 

"The amount of cameras is staggering.", posted on January 5, 2017 at 16:27:44
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 Yep, cameras all around, front, back, high, low.
Next time I'm asking for my colonoscopy results.

Far more than cameras are aimed at you.
Gamma ray detectors and heavy duty data mining.

I am all for border security.
But the overt militarization and surly assholishness is not protecting us.
A few years ago they replaced the building/facility. Everybody was amazed at the constuction hole. That facility is like an iceberg, 90% is hidden underground. Not just underneath the building, but spreading out underneath the roads and park.

Don't get me started on Homeland Security money. Billions of dollars were given to all kinds of businesses and organizations. Indian casinos got Homeland money. The Amish got Homeland money. I guess foreign evil-doers are out to harm people who are bad at math and those who create hand crafted furniture.

Quick story:
Headed home from lunch one day the guard told us to "follow the yellow line to the yellow portal".
Fine. We followed the yellow line until it dead-ended at nothing. We dutifully stopped at the end of the yellow line. Hmmm. We were blocking the road and it has barriers on both sides. Traffic was now blocked. My wife was stressing out. I said don't move the car, follow orders. Pretty soon there was a line stuck behind us. I got out, went in to ask what next. Where's the yellow portal? There was a long line and we were blocking traffic. I raised my voice and asked everyone within 50 feet where the yellow portal was. A superviser approached, asked questions about why we were looking for a yellow portal. Turns out six cars in a row from one lane all got sent to the yellow portal. After some scurrying around and head scratching they said the gamma ray detector was giving false positives. The superviser sent all six cars on their way. He said the guard in that lane needed training. The "yellow portal" is a secondary gamma ray detector. He didn't know why the yellow line dead-ended and did not guide you to the secondary gamma ray detector.

Also they got upset every time I said the words "gamma ray detector". I guess they think they are secret, even though they are eight foot tall safety yellow boxes on both sides of your car and also other places. Plus they brag about them on websites. Oooh, super secret.

Sorry for the exchange rate, but thank you for the discount on everything when we come up.
You guys really pay more for everyday necessities, gas, food, clothes.
But that is nothing compared to your housing market. Yikes.

 

RE: "The amount of cameras is staggering.", posted on January 6, 2017 at 09:49:31
grantv
Manufacturer

Posts: 7724
Location: B.C.
Joined: January 15, 2002
 Well that's far better than any story I have! I often find women are more harsh than men, maybe something to prove, maybe the fact that they're in that field says something... always watch out what you say though, definitely don't need (another) colonoscopy!
I imagine either they go home and act the same, or take off all their clothes and run around naked for a while to take away the shrill. :)
Re your next post, sounds good on meeting up one day. That however would have to be approved by the wife, those trips are all about her and family time (I work a lot, not a ton, but more than we'd prefer I do).

 

Department of Planning and Finance, posted on January 6, 2017 at 16:09:01
DragonEars
Audiophile

Posts: 662
Location: PNW
Joined: March 15, 2006
 Totally understood.
I too have a Minister of Planning and Finance. SWMBO !
Maybe a quick food stop on your way through someday.

 

RE: Department of Planning and Finance, posted on January 7, 2017 at 07:08:44
grantv
Manufacturer

Posts: 7724
Location: B.C.
Joined: January 15, 2002
 We'll figure out something for sure even if wife is in a rush to get somewhere.. let me know if Kelowna is ever on your radar also!

 

RE: Magneplanar 1.6QR ribbon repair/replacement, posted on January 2, 2017 at 21:22:35
Davey
 You don't need to take the sock off to properly check the tweeter. Just remove the connector plate and you'll have access to probe the transducer wires directly. It's possible they did this and you didn't notice.

Regardless, as mentioned by Neo, it's possible a quick repair could be implemented on the tweeter. It's fairly easy to bridge a small break in the quasi-ribbon.....if that's all the problem is.

Cheers,

Dave.

 

RE: Magneplanar 1.6QR ribbon repair/replacement, posted on January 3, 2017 at 18:41:42
RalphH
Audiophile

Posts: 39
Location: Canada
Joined: May 6, 2002
 I think it's likely they did remove the plate as you suggest and I wasn't aware of it.

So if there is a break in the wire it will read 0 as they described? I have reason to believe that there is a good chance of wire corrosion (thanks kitty cat)

I think I need to investigate that further.

Thanks

 

RE: As Davey said removal of the sock would certainly enable you to identify the problem fully and ..., posted on January 4, 2017 at 17:46:53
andyr
Manufacturer

Posts: 12548
Location: Melbourne
Joined: September 2, 2000
 they will also sound better with no sock 'filtering' the HFs. :-))

Andy

 

RE: Magneplanar 1.6QR ribbon repair/replacement, posted on January 4, 2017 at 10:21:20
Davey
 If there is a break in the transducer, a ohmmeter reading will indicate very high (or infinite) resistance vice around 4 ohms as it should be.

There is also the fuse-holder and various connections in there. I assume those were checked as well.

It's possible the squeeze connectors that are recessed up into the frame cutout might be an issue. It's difficult to probe those directly, so you would normally attach a meter to the wires that lead out from there.

I suspect a removal of the sock would identify the problem fully, but you'd have to remove all those confounded staples at the bottom to do that. :)

Cheers,

Dave.

 

RE: Magneplanar 1.6QR ribbon repair/replacement, posted on January 2, 2017 at 18:41:19
russ69
Audiophile

Posts: 951
Joined: December 13, 2009
 I'd send them back and ask about a 1.7i upgrade, probably worth the cost and you'll get new speakers basically.

 

Stay away from that shop!, posted on January 2, 2017 at 13:33:41
RickeyM
Audiophile

Posts: 2208
Location: East Coast
Joined: March 15, 2003
 At least as far as your Maggies are concerned. They're either lying or incompetent.

 

RE: Stay away from that shop!, posted on January 2, 2017 at 14:14:59
neolith
Audiophile

Posts: 4842
Location: Virginia
Joined: February 21, 2002
Contributor
  Since: December 2, 2004
 Absolutely! Putting an ohm-meter across the tweeter terminals will always show an open circuit because of the capacitor bank in series with the speaker. One needs to open the back panel and place the test leads across the blue and brown wires coming from the speaker panel. The reading should be ~4.5 ohms.



"Our head is round in order to allow our thoughts to change direction." Francis Picabia

 

RE: Magneplanar 1.6QR ribbon repair/replacement, posted on January 2, 2017 at 09:16:53
neolith
Audiophile

Posts: 4842
Location: Virginia
Joined: February 21, 2002
Contributor
  Since: December 2, 2004
 Ok, a dead tweeter means a break somewhere. The obvious is the fuse and I am sure you tried a replacement. The next place to look would be the wire on the panel. A visual inspection might reveal the break and if you are lucky its a single spot that could be fixed with silver epoxy used to repair circuit boards. However I would not on bet on this being the case. More likely the wire has corroded and you will find sections that look powdery and fallls apart when rubbed lightly. Do not dispair -- the cure is a DIY repair. Contact Magnepan and they wiill sell you a repair kit for two panels with instructions. The repair is not difficult but is a bit tedious. The hardest part is removing the skirts.



"Our head is round in order to allow our thoughts to change direction." Francis Picabia

 

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