So this is the last time I'm going to explain thus for everyone who thinks I'm an idiot and tried to repair my drivers.
The tweeters i received were in factory packaging with one driver's rear chamber completely detached and rattling around. The other one had its chamber loose, ready to fall off - it came off in my hand when I lightly tugged on it.
The tweeters were packaged in a small cardboard box with minimal cushioning to protect them, however Bliesma stated they should be safe to ship this way without any other extra packaging.
After contacting Bliesma, I was encouraged to reattach the chambers with specific instructions,,which I followed precisely. It was difficult to do this because the damping wool discs pre-loaded the chambers and their fit wasn't very precise ie. not self centering. I also didn't want to use the recommended solvent based adhesive as I was worried it would attack and weaken the diaphragm and VC materials / adhesives.
Bliesma gave me the option of sending them the units to them for repair, but I didnt see this as necessary based on the info I was given to glue the chambers back on myself and save the time and hassle of shipping both ways. The company I purchased the tweeters from didnt accept my returning them. I didn't realize they weren't a good company to deal with after I made my purchase. They appeared as reputable as any other company on the web and had decent feedback.
So I'm stuck with this mess and so far haven't heard back from Stanislav at Bliesma.
Any company can have a bad product. No one is immune from this sort of thing. I'm not a dummy and know how to repair spekaers and electronics by trade. This isnt my first rodeo. Please stop accusing me of screwing up these drivers. I did non of the sorts.
IF ANY OF YOU NEED TO ATTACK ME FOR FOLLOWING BASIC INSTRUCTIONS AND TRYING TO BE EFFICIENT ABOUT THE WHOLE THING, PLEASE THROW YOUR CRAP AT SOME OTHER PLACE, NOT ME. THIS IS WHY I HAD THE LAST THREAD CLOSED, DUE TO GARBAGE LIKE THIS.
THANK YOU!!!
The tweeters i received were in factory packaging with one driver's rear chamber completely detached and rattling around. The other one had its chamber loose, ready to fall off - it came off in my hand when I lightly tugged on it.
The tweeters were packaged in a small cardboard box with minimal cushioning to protect them, however Bliesma stated they should be safe to ship this way without any other extra packaging.
After contacting Bliesma, I was encouraged to reattach the chambers with specific instructions,,which I followed precisely. It was difficult to do this because the damping wool discs pre-loaded the chambers and their fit wasn't very precise ie. not self centering. I also didn't want to use the recommended solvent based adhesive as I was worried it would attack and weaken the diaphragm and VC materials / adhesives.
Bliesma gave me the option of sending them the units to them for repair, but I didnt see this as necessary based on the info I was given to glue the chambers back on myself and save the time and hassle of shipping both ways. The company I purchased the tweeters from didnt accept my returning them. I didn't realize they weren't a good company to deal with after I made my purchase. They appeared as reputable as any other company on the web and had decent feedback.
So I'm stuck with this mess and so far haven't heard back from Stanislav at Bliesma.
Any company can have a bad product. No one is immune from this sort of thing. I'm not a dummy and know how to repair spekaers and electronics by trade. This isnt my first rodeo. Please stop accusing me of screwing up these drivers. I did non of the sorts.
IF ANY OF YOU NEED TO ATTACK ME FOR FOLLOWING BASIC INSTRUCTIONS AND TRYING TO BE EFFICIENT ABOUT THE WHOLE THING, PLEASE THROW YOUR CRAP AT SOME OTHER PLACE, NOT ME. THIS IS WHY I HAD THE LAST THREAD CLOSED, DUE TO GARBAGE LIKE THIS.
THANK YOU!!!
I generally agree with this statement. Personally, I generally don't think we are entitled to support from manufacturers unless we bought the product directly from them. However, if manufacturers aren't willing to help end users, then I think that they should at least be careful about which distributors they conduct business with. In this instance, the distributor has apparently failed profiguy in a pretty major way, making it necessary for him to turn to bliesma directly. In this instance, is he wrong to expect some support from them? Hypothetically, if bliesma refused to help, then continued to sell to that distributor, would that not make them complicit in the distributor's poor business practices?
It's bonkers to me that a manufacturer would even recommend the customer attempt this in the first place.
That is the thing though.
There should be no reason to repair them.
They were damaged in shipping.
How hard is it to get. If your product ships internationally
then the packaging needs to be designed to do so.
How hard is it to get they aint sold as a fix it yourself kit.
He didnt do a darn thing wrong.
Because customer dont need to repair or rebuild a product.
Or eat shipping cost
You open the box it works, period.
Damage occurs then distributor covers it.
Manufacture covers distributor.
Been selling furniture for years.
Large well packaged items come from across the
ocean. And get transferred truck to truck and
dock to dock. Many many times no problem.
I had the same problem with certain companies.
Damaged items constantly.
Eventually the distributors drop them and so
do the orders coming in.
And yes I have dealt with email dodging distributors.
Because they were getting screwed by the manufacture.
Even if the product got replaced, I still eat time
and shipping. And peeve off my customers.
Because they cant spend a few more dollars on shipping
materials. Saves a lot of time.
Voice coil is rubbing, items arrived damaged.
Manufacture or distributor needs to replace them.
The end. That simple.
Shipping insurance is bull crap.
One more guy to argue with and ignore emails and waste time.
My customers dont care, they want their stuff on the date given.
Not excuses.
There should be no reason to repair them.
They were damaged in shipping.
How hard is it to get. If your product ships internationally
then the packaging needs to be designed to do so.
How hard is it to get they aint sold as a fix it yourself kit.
He didnt do a darn thing wrong.
Because customer dont need to repair or rebuild a product.
Or eat shipping cost
You open the box it works, period.
Damage occurs then distributor covers it.
Manufacture covers distributor.
Been selling furniture for years.
Large well packaged items come from across the
ocean. And get transferred truck to truck and
dock to dock. Many many times no problem.
I had the same problem with certain companies.
Damaged items constantly.
Eventually the distributors drop them and so
do the orders coming in.
And yes I have dealt with email dodging distributors.
Because they were getting screwed by the manufacture.
Even if the product got replaced, I still eat time
and shipping. And peeve off my customers.
Because they cant spend a few more dollars on shipping
materials. Saves a lot of time.
Voice coil is rubbing, items arrived damaged.
Manufacture or distributor needs to replace them.
The end. That simple.
Shipping insurance is bull crap.
One more guy to argue with and ignore emails and waste time.
My customers dont care, they want their stuff on the date given.
Not excuses.
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Just because your opinions on the matter aren't getting as much traction as you like, you resort to mild insults. This is what the ignore function is for I suppose.
ANYhow, moving forward.
I think it's far more productive to bring the discussion back to the D-I-Y in D I Y Audio.
I think profiguy should focus on the region of interest. Like what's to the RIGHT of 700Hz.
We don't care what's happening at 16KHz for subwoofers, and we also don't care what's happening at 200Hz for tweeters.
@profiguy - you are perfectly within reason to ignore anything to the left of 700Hz on that impedance peak.
You don't want that tweeter to be playing any NEAR of 700Hz, let alone below it.
The next step is the take frequency response and distortion measurements from 700-1KHz up and see how the two compare.
I think it's far more productive to bring the discussion back to the D-I-Y in D I Y Audio.
I think profiguy should focus on the region of interest. Like what's to the RIGHT of 700Hz.
We don't care what's happening at 16KHz for subwoofers, and we also don't care what's happening at 200Hz for tweeters.
@profiguy - you are perfectly within reason to ignore anything to the left of 700Hz on that impedance peak.
You don't want that tweeter to be playing any NEAR of 700Hz, let alone below it.
The next step is the take frequency response and distortion measurements from 700-1KHz up and see how the two compare.
Please stay out of this thread.
The retailer won't take the drivers back. They were "repaired" by me as a suggestion by Bliesma. The repair was only reattaching chambers. I didn't touch the voice coils or anything else. The problem is now a different one related to the voicecoil and.motor assembly. Its a warranty issue and should be backed by Bliesma. I sent an email last week and received no reply so far. Retailer won't take the tweeters back. Its that simple.
I'm done trying to talk sensibly about this. Its not just a simple situation where one person can be blamed, especially me. Bliesma warranties these drivers for 5 years. They should be covered under warranty according to my conversion with Bliesma.
Again, if anyone wants to bicker about how I did something wrong, take it somewhere else. I paid good money for a product which doesn't work as advertised. I followed all recommendations by the manufacturer and still have a bad voice coil on one driver which has nothing to do with the first problem, at least not due to the re-attsching of the chambers.
So I finally heard back from Stan at Bliesma.
He believes it may be an air leak of the chamber and not the VC. Im skeptical that its the case, but I'll be revealing the chamber again and see if that is the cause. A leak usually causes other issues, but I'm going to be open minded and see what happens.
Fingers crossed...
He believes it may be an air leak of the chamber and not the VC. Im skeptical that its the case, but I'll be revealing the chamber again and see if that is the cause. A leak usually causes other issues, but I'm going to be open minded and see what happens.
Fingers crossed...
Have you ever filed a damage claim with a courier and actually gotten a settlement in a reasonable amount of time? It takes forever.
The package with the drivers showed no signs of handling abuse on the outside, so the courier won't be quick to call it damage from rough handling. They don't simply just believe you right away without a huge ordeal proving it.
Of course I wouldn't operate an HF driver below its fundamental resonance frequency. That would be idiotic. I mentioned this are for sake of comparison to the other tweeter to point out the difference between the two as a pair and a probably cause for the issue im hearing during testing.
I can appreciate your attitude towards this whole thing and I agree there should have been no issues from the start. The packaging was definitely not sufficient to protect the drivers from shock if they happen to be dropped. The fact both chambers were affected shows there was some rough handling involved in addition to a weak adhesive bond. The problem is proving it. Anyone who has ever filed a claim with a carrier knows how hard it is to get them to agree and pay out a claim.
My mistake was attempting to fix them myself, regardless of how straight forward Bliesma says it should be. They even suggested using soda bottles as weights to clamp down the chambers during gluing. It wasn't that easy at all and It couldn't have been any further from the case. This is coming from a person who has done this sort of work for a few decades. It should have been a simple fix, but it wasn't.
Bliesma wants me to deal with the merchant who won't do anything and the merchant just ignored me. They are the ones who need to file a claim in case of a situation like this, not me. Thats how its always been with any other similar situations from my past experiences. The customer just sends the product back and / or the carrier comes out to inspects and claim the package with its contents.
The seller buys the insurance, not me. I had no option of any sorts when I purchased the drivers. That is the sellers responsibility, not mine, unless its stated in the terms of the purchase. I also had to agree to specific terms when I ordered from the merchant and part of that was the (lack of) recourse I had. I made the mistake thinking these T34Bs were going to be flawless, since I haven't heard any bad issues from anyone online. I guess I'm the only person who ever had or will have a problem with a T34B - lol. Either way, the merchant should be the one stepping in and resolving the whole matter. If they don't then I have to ask the manufacturer to help me, but he isn't liable either for shipping damages. In other instances of receiving damaged products, the seller would go the extra mile and help the customer, but in my case they refused to replace the drivers. Its their right to do so, but I think its bad business, given they didn't even contact me back.
There is very little you can do if the merchant is on the other side of the world and its not like you can just drive by and confront them about it. I used to do direct sales of my own line of studio monitors and always went the extra mile to make sure my customers were taken care of in case of something gone wrong in shipping or warranty cases. I would even send out replacement voice coils or whole drivers under warranty to my customers if they were skilled enough to replace them on their own. I simply requested the bad driver back for proof of failure and there was no further ordeal.
Anyways, I'll be happy when this mess is over. It certainly left a bad taste in my mouth, to the point I don't trust the integrity of the product. Even if the drivers were dropped and there was no sign of it on the outside of the package, the back chambers shouldn't have come off that easily. That shows inadeqate adhesive quality or improper type of adhesive to start with. Considering the fact the surface which attaches to the chamber is so slippery from being plated in a mirror finish, its no surprise the adhesive couldn't hold on properly with average amounts of physical shock expected in shipping. Add to that the sloppy mechanical tolerances of the rear chamber flange, that worsens the situation further. Sorry, it's the truth whether anyone wants to hear it or not.
If it turns out its just the lack of an airtight seal, that would be great, but I'll be sending the drivers back to Bliesma for repair if it isn't. Thats easy enough to verify. We'll see.
Again, I'm not here to bash Bliesma. Why would I have committed to purchasing what I believed was state of the art driver technology if I thought otherwise? I went off the observations and suggestions of others here and also listened to a few designs using the T34Bs. I really liked what I heard. Thats why I bought them to begin with. I just didn't think it would turn into a nightmare with people blaming me for the outcome of an issue I didn't create. I guess I deserve it trying to be efficient and save everyone the hassle of shipping and waiting a long time. This should have been a straight forward repair. It took me several weeks to find a suitable adhesive that actually held, which turned out to be T7000 - in case some of you want to know which glue I used. BTW, this glue is a really good product for gluing almost anything to slick surfaces,.even polypropylene.
I didn't create this thread to have a pi$$ing contest. It was just meant to show an issue which I wanted to identify. I didn't want to spend most of my time bickering back and forth while others elevate Bliesma to God like status, not wanting to believe they were capable of occasionally making an imperfect product. I wanted my T34Bs to be flawless, but it didn't turn out that way for me.
I guess its only natural for people to automatically blame someone and label them as a bad person or trouble maker when they dare speak up about a flaw or problem with a well regarded product, even if there was physical proof of it. Anyone can make mistakes. I admit mine when I do so, but that doesn't give anyone the right to crap on my head and blame me for it.
I just sealed up the gap on the side of the chamber with softtac putty anf remeasured impedance. It appears to have improved a bit, but it didn't change the Qts much in the direction of the other driver. I'm gong to pry the chamber off and inspect the sealing pattern left behind. Hopefully this is the whole issue... fingers crossed.
Top is new trace, bottom is old.
Top is new trace, bottom is old.
Attachments
Thanks. Im emailing Stan to see if i can get another back chamber for this driver, since it was the one that wouldn't sit evenly on the magnet to start with. It may be just the back chamber machining being out of spec. I used a very controlled, similar amount of adhesive as Bliesma did gluing these things back together to not affect the chamber volume. The chamber barely sits on the edge of the motor flange and doesn't inspire alot of confidence the way it feels just holding it together by hand.
Hilarious!
Mr. Stan should take his responsibility; it's what we call after sales customer care.
He should take the initiative to provide you with a new mint set of tweeters. Not doing so might hurt his rep.
Damage in transport can happen, but the customer to repair is a no-go; normally you loose guarantee.
Who is the retailer by the way?
Mr. Stan should take his responsibility; it's what we call after sales customer care.
He should take the initiative to provide you with a new mint set of tweeters. Not doing so might hurt his rep.
Damage in transport can happen, but the customer to repair is a no-go; normally you loose guarantee.
Who is the retailer by the way?
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