ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
I'm having an issue with one midrange where the sound is scratchy and distorted at low volume. After diagnose by pushing the dome slightly inwards I found that the voice coil is rubbing slightly.
Is this repairable or I need to replace it? Anyone attempted to open one before?
The midrange is an ITT LPKM 130/50.120T 4 Ohm found in the M70, M75 and M100
I know, it's a rare animal these days...
TIA to everyone!
Charles
Not having experienced this, I couldn’t say. Just hang on to those M70s is all I can say.
Jacques
Jacques,
I’m shaking the whole world right now to find at least one working midrange to put back to work my M70’s.
I invested countless hours into the restoration of the speakers and the Beomaster 4400 too and I’m not counting the money invested here.
But you know how it is when restoring old equipment, right? You’re flipping a coin hoping it will drop on the good side; you never know how it will turn out exactly.
But look at this setup and the only missing piece is my recently acquired BG 4002 waiting for restoration.
My wife and I auditioned the combo for the first time last weekend and just by writing this message, I have goose bumps all over me. We were totally blown away by pretty much everything that was coming to our ears from a playlist we are listening for more than 20 years.
I never noticed before the faint vibration of that one lead of the bass guitar of Walk On the Wild Side from Lou Reed or the few words whispered by Carly Simon at the beginning of You’re So Vain.
Trust me, I will find that ITT midrange driver and even more, I will fix the other one and keep it as a spare.
Thanks for your support, after all, you're the one who ignited the passion for this set.
Stay tuned my friend!
Hi:Sounds like the voice coil may have come unglued from the dome. It may be possible to have it re-attached. I have a pair of M150 speakers that has a SEAS dome mid-range that had the a similar issue.
Suggest that you find a local speaker repair shop, the places that refoam speakers. They may be able to work on it. There are lots of audiophile shops in Montreal should be able to find someone local. Else give David a call and see who he can recommend http://www.armageddonelectronics.com/
B&O may have a trade in program where you send your old one in and then they send you a replacement. This is how they support obsolete drivers.
Derek
By the way, still my favorite of all the classic speaker stands, so mid-century. Seeing as how I have a Saarinen dining table and chairs it's no wonder these are my favorites!
Jeff
I'm afraid I'm recovering from the BeoVirus.
auric: Hi:Sounds like the voice coil may have come unglued from the dome. It may be possible to have it re-attached. I have a pair of M150 speakers that has a SEAS dome mid-range that had the a similar issue. Suggest that you find a local speaker repair shop, the places that refoam speakers. They may be able to work on it. There are lots of audiophile shops in Montreal should be able to find someone local. Else give David a call and see who he can recommend http://www.armageddonelectronics.com/ B&O may have a trade in program where you send your old one in and then they send you a replacement. This is how they support obsolete drivers. Derek
Thanks a lot Derek for the tips and also the leads.
I wasn't aware of David neither of that B&O program but I will certainly look for a competent speaker restorer as well. Usually I'm doing this stuff myself but a dome tweeter is another ball game I believe.
I will take every piece of advise offered to me.
Thanks again!
auric: B&O may have a trade in program where you send your old one in and then they send you a replacement. This is how they support obsolete drivers.
They most certainly haven't!There has been no support from B&O for these speakers since the mid-80s.It's a general rule, that apprx 10 years after production ends (read: when spare parts starts to become really needed), the support from B&O is stopped.Often earlier.
Martin
Jeff: By the way, still my favorite of all the classic speaker stands, so mid-century. Seeing as how I have a Saarinen dining table and chairs it's no wonder these are my favorites!
Jeff,
Everyone coming to the house are flabbergasted when they see the speakers. They don't know if they are actually new or from an another era but certainly unique.
I'm even tempted to do replicas and sell them... no that difficult actually...
Thanks for your support Jeff!
chartz:Not sure I have your email Charles, but I can send you scans of recent articles by Tim on both the 4400 and the M70s. Just send me a PM if you are interested!
Just send me a PM if you are interested!
Jacques, I'm not aware of that article and certainly interested reading it. I'll PM you shortly.
Thanks!
Dillen: auric: B&O may have a trade in program where you send your old one in and then they send you a replacement. This is how they support obsolete drivers. They most certainly haven't!There has been no support from B&O for these speakers since the mid-80s.It's a general rule, that apprx 10 years after production ends (read: when spare parts starts to become really needed), the support from B&O is stopped.Often earlier. Martin
Thanks Martin,
It would be very surprising to see a manufacturer supporting a product after 45 years but you never know.
I found one unit in the US yesterday where the seller was shipping within US only but I convinced him to ship it to Canada. See said it was testing OK and sounded but you never know what can happen in between. Finger crossed at this moment...
Hi,
I need your email for the documents, they are not online.
chartz: Hi, I need your email for the documents, they are not online.
Thanks a lot for the articles Jacques. I even suggests that those articles uploaded into product description.
Best regards,
Rich:I have 2 spare dome midranges I think. One may be missing a nut or something, it’s been a while since I opened the box my spare drivers are in. If you end up needing one, let me know, and I will search my version of the dungeons.
You won the vintage drivers lottery Rich? You know that these are rare right? Thanks for the offer however I found one on eBay but I don't now how well it will work. Don't risk your life yet in the dungeon unless really needed I'll keep you posted!
I had a spare pair of M70s with damaged cabinets that I parted out. The phase links and tweeters were donated to Soren Mexico. The woofers and midranges still need to find good homes.
Rich:I had a spare pair of M70s with damaged cabinets that I parted out. The phase links and tweeters were donated to Soren Mexico. The woofers and midranges still need to find good homes. Blah blah blah, blah blah ba ran
Rich,Could I kindly ask you to upgrade your membership level to minimum silver?That's what we ask of our members to allow buying and selling.Your support will be appreciated.
Dillen: Rich,Could I kindly ask you to upgrade your membership level to minimum silver?That's what we ask of our members to allow buying and selling.Your support will be appreciated. Martin
Hi Martin,
How do we upgrade our membership? I logged into my user portal and also look under my profile but I don't see anywhere how to upgrade?
Can you assist me please?
Sure,On the main website, just below the blue Logout button:https://www.beoworld.org/register.asp?action=regrade_view
Oh boy,
Thanks Martin!
Sorry, Martin. But to be clear, the intent of the offer of the midranges was to give them away at no cost.
That wasn't clear. At least to me it wasn't.But that's of course perfectly fine - and very generous of you.
But Martin,
Rich is not selling anything, he donates his stuff! Just kidding
Beo_Jean:Rich is not selling anything, he donates his stuff! Just kidding
No kidding, he donated drivers for my M70s and then just for the fun of it he put a BG CD50 and a BG 3000 in the shipping box. its yours for free he wrote, the BG 3000 I repaired and send back to him, just for the fun of it.
Collecting Vintage B&O is not a hobby, its a lifestyle.
Søren Mexico: Beo_Jean:Rich is not selling anything, he donates his stuff! Just kidding No kidding, he donated drivers for my M70s and then just for the fun of it he put a BG CD50 and a BG 3000 in the shipping box. its yours for free he wrote, the BG 3000 I repaired and send back to him, just for the fun of it.
What? You mean the real BG 3000 manufactured by Thorens? Oh man, that's a heck of a rare machine! And going for 2K on eBay!
The joy of forums hey! My hat off to you Rich!
Anyone knows who manufactured the filler driver put into the M70?
Not much is said about this one. I've seen resembling units put into the RL manufactured by Nokia (formerly ITT) but not much else. Any equivalent available? I'm building spares just in case...
If it was a Thorens i would have kept it, no it was this one
Well, just for the fun of it, I'm back to being a Gold Member again.
Søren Mexico: If it was a Thorens i would have kept it, no it was this one
Yes, that's the one. I recognize the little scratch on the front of the wood trim.
Rich: Søren Mexico: If it was a Thorens i would have kept it, no it was this one Yes, that's the one. I recognize the little scratch on the front of the wood trim.
Rich,
I sent you a PM for the midrange. Thanks!
Thanks for upgrading to gold, Rich.I wish you luck in the prizedraw
I got into the equivalent of my dungeons today and found my box labeled "Loudspeaker Drivers." Within that box, I found these:
Extremely rusty hardware on the front, but they both work.
A look at the backs.
Wow, fantastic!
Excited to get them here!
Thanks Rich!
I got a similar set up to you.
Beogram 4002
Beovox M75
Beomaster 4400
Beocord 5000
The sound quality is complete pants compared to my Pioneer SA-9500 with Kef Concertos.
Set