Difference between Opus BT-C3400 & BT-C3100 v2.1?

Batteries and Chargers Chargers
603

And as far as this fan below goes ….
……I found the company web site ( qfydz ) , but have not been able to find the fan listed. Imagine that…. :person_facepalming:

GearBest replacement fan I ordered

.
My goal in this was to try and find one that did not have to be modified to fit. A drop in replacement so to speak with the same or better specs than original.

It appears the ADDA has the same cfm as the Delta but it is only 6 mm thick.

And I could find no data at all on the “qfydz”……

EDIT: I just emailed “qfydz” and asked for the specs of the mystery fan. Time will tell if they answer. :wink:

604

My delta fans specs. from speaker_joe’s Ebay add.

Specification
Nominal voltage : 12 V
Current : 0.12 A
Operating voltage range : 4 - 12 V
Fan speed : 13,000 RPM
Performance : 2.4 CFM
Noise : 28 dBa
Size : 25 x 25 x 10 mm without heatsink

I wonder If the ADDA 25mm x 25mm x 09mm has the same specs as the one you posted 25mm x 25mm x 06mm? My guess would be yes.

Nominal Voltage: 5V
Current:0.65A
Fan speed:12,000 RPM
Performance:2.4 CFM[Ability to move air]
Noise: 29 dBa [decibels]
Size: 25mm x 25mm x 06mm 25mm x 25mm x 06mm???

The Delta’s numbers and the ADDA’s numbers seem comparable.

All I can tell you was the amount of air dispersed by the Delta fan was very noticeably superior and higher than the ADDA fan.

I would venture to guess close to or twice as much. Another guess, maybe the fan blade is superior on the Delta?

Dale got my fans today. I can’t wait to put that fan back in there! In the future if I need anymore, we have speaker_joe right here in the States. :+1:

605

Gauss and Teacher. No opinions/comments/input about my email to Harry XU?

I posted it at 12:48pm! Gauss you were online 40 minutes ago and Teacher you been online several times since then and are online now!

Goodnight,,gentlemen

606

I too think your email looks fine Robert. It seems you covered everything well.

I somewhat do agree with Speed4goal. To leave the 3100 as is and to fix the power supply supply & cooling problem should add little to no increase in price as far as I am concerned. And it needs to be BETTER than just the bare minimum to get by.

Now if they want to up the discharge to 1.5A or even better to 2.0A that would work for me & I’d pay a bit more gladly. BUT, if they do this they need to have the power supply and cooling figured out from the start.

IMO it needs to be better than just “barely enough to get by” … It needs to be overkill or close to it, so as to handle any situation without a problem: both power supply & cooling.

None of us are buying these things to have to figure out what is wrong with them and then patch them up. It is a huge waste of “our” time & money.

That is my .02, which in the big scheme of things is worth nothing. But there it is anyway. :slight_smile:

PS… even though mine has not done this “yet” on the heat shut down. MAYBE it is just because I have not been testing any high IR batteries. I don’t know??? Just a thought. :slight_smile:

607

I can only get to one thing at a time wolfdog. You will see it below posted at the same time you posted your question. :slight_smile:

608

What a joke his reply and Supposed new power supply!

I have spent enough time contacting him and testing. I am done,good luck guys!
_

sales@opus-instrument.com
10:21 PM (29 minutes ago)

to me
Hi, Robert.

we have an improved version power supply. The label is marked with extra printing to tell the difference between old one and new one:

NEW ONE!

We have no:17[17 means 2017] used.While the old power adapter don’t have this year code info.

year code info.

Concerning fan, this can be a problem.

We can source really good fan, but the price is $5.0 more comparing to the current fan we are using. If you are willing to pay extra $5.0 for this, we can purchase this fan to be used if you are going to order.

We are testing the new power adapter and to make sure we are not having this problem.

Also we are working on a new design, that will get rid of this high current pulse completely. The new design is being revieved technically and once we have sorted out all the problem, we will make a new design.

regards

henry

_

This was my reply which included the picture of my old Power supply.

Robert Mazur
10:37 PM (15 minutes ago)

to sales
Hi Henry,

There is NO difference whatsoever with your new power supply except the Number 17 written in the bottom right corner! ALL the specs are exactly the same!

I already used my own money to buy the fan and the power supply. I was making these suggestions for future customers and possible purchases.

This is a picture of my FAILED POWER SUPPLY! Looks just like your supposed improved one, minus the #17 in bottom right corner. “rdana” will not be happy either.

Sincerely, Robert

609

Well, is a power supply honestly meeting those specs going to be adequate?
Could be they got cheated on the first batch of power supplies and they weren’t up to spec.
Someone like Gauss could comment on the spec (probably already has somewhere above)

Chuckle.

Aren’t you glad we’re not buying anything life-critical from China?

Hey, did you know China has been building a new, economical fission power plant design?
So safe they don’t waste money putting a containment building around it ….

610

Love the quote! I should have known better! How stupid does he think we are w/ that phony power supply picture and him saying that,

“The label is marked with extra printing to tell the difference between old one and new one”

lol!!! yaa, the number 17 is written on it w/ the exact same specs!

611

@wolfdog …… Well, you gave it your best shot with the email. It appears ole’ H. Xu thinks we all fell off the turnip truck yesterday.
Oh well, you tried. :+1:
Maybe LiitoKala will beef up the Lii 500 just a bit with a 1A discharge & maybe add a fan. Call it a Lii 550-Plus.
Then we can just boycott OPUS & never buy another one. Which, come to think about it; after all this BS: there is no danger of me ever buying another one anyway. :wink:

Now, moving on. You wrote the below & posted it at the exact same time I posted THIS .
Yet you have made no comment/opinion/input of my post referencing your email to Henry Xu. What are you waiting on? . :smiley:

612

I thought it best NOT to make a comment! Since you asked. This is what it would have been,you had to go by my post to make several of your posts.

Would have thought most likely you would have seen and read it! :stuck_out_tongue:

613

Darn, I should have known better than to even ask…. :person_facepalming:
Try to pay you a compliment about your original emai to H Xu & you can’t handle it. :stuck_out_tongue:

Actually, after telling you your email looked just fine & that you seemed to have covered everything well…… Most of what “I” said was agreeing with or expounding upon what Speed4goal had said.

With the exception of course being the part about having to spend money to fix it.

Reading comprehension…… Priceless!!! :smiley:

614

You know what fellas—this charger isn’t worth all this —it’s just a charger is all—it has limits/flaws like everything else we purchase—we all know how this stuff is manufactured — CHEAP—- somethings can be fixed—some can’t

615

So … so … instead of improving the power supply, they’re trying to eliminate the current draw pulse that overwhelms the power supply.

Maybe.

And in the meanwhile, they’ve told the power supply builder to quit using chewing gum in place of good capacitors, or something?
(since it’s the identical model, identical spec, but the label changed “plus 17 on the corner”)

I can see a meme possible here for reviewers:

“We found this to be a mediocre product, the manufacturer should put 17 on the corner to improve it …. ”

616

You have a point there,However, I am going to continue to exchange emails with him and get answers until “MY PEOPLE” get the kickbacks necessary to reimburse ALL of us 100 fold! :+1: :sunglasses: :smiling_imp:

617

This should have been revealed in the FIRST email!

sales@opus-instrument.com
6:52 AM (3 hours ago)

to me
Hi, Robert.

The power supply has its internal design changed completely. we have minimum over current protection from previous 6A to 7A, and its output power capability is also higher.

we are making more testing to confirm this.

What kind of power you are expecting us to use? can you make any suggestion? you mean with 12v 5A rate power supply?

regards

henry
_

Robert Mazur
10:26 AM (4 minutes ago)

to sales
Hi Henry,

Why didn’t you provide that information[specs] in the first email? If your promoting a new design it would be nice to provide pertinent information instead of being vague!

In regards to the power supply.

-The one provided for my charger[KYT120300BV] was inadequate and failed as described in my initial email.

- The one I bought myself is very high quality[LITE-ON 12V/5.5A/66W]

-Your NEW design is yet to be used and proven sufficient.

To further answer your question: Whether it is 3a/4a/5a ect. It NEEDS to the job. That is your companies responsibility.

I hope it works well for the people who buy the charger. For me and a few others it is irrelevant because we have already used our own money for replacements.

None of us are buying these things to have to figure out what is wrong with them and then patch them up.

So what are the specs of this new fan that will be an additional $5 and who is the manufacturer?

Cheers,Robert [Wolfdog1226]

618

/\\\\\
Good response to his belated email. :+1:

Why in the world he would not say that in his first response to you is beyond me. :person_facepalming:

Keep it up… :slight_smile:

619

Hank,

I hope your not mad at me for borrowing the quote. :slight_smile: “None of us are buying these things to have to figure out what is wrong with them and then patch them up”.

It was a perfect quote to use in my rebuttal!

I have been writing poems and quotes for a long time. I enjoy philosophical, meaningful, simple and direct communication,especially when it is written.

I will share this with you. I wrote this yesterday morning before the suicide bomber in Manchester UK struck.

To me it is eerie, to others it may be a coincidence.

“If people could be more like Dogs the world would be a better place.There would be much LESS conflict and violence, instead there would be true harmony and grace.”

620

Well said wolfdog!!! :+1: I agree also, that was the “perfect quote to use in your rebuttal!”

I also have a suspicion that hank is in no way “mad” that you used it. He is a team player as most all of us are. :+1: Personally, I am estatic you found the quote, taken from post #678; so useful in your rebuttal. It definitely had a ring of honesty & truth to it!!! :+1:

Oh yeah, I’m not mad that you used it either…… I am, as previously stated; most pleased you found it useful. :slight_smile:
.

621

I think it is time to pass the torch. Why don’t you take over now?

Then again, there is really nothing left for him to tell us! Whoever buys the new Opus package can report its successes or failures.

I have done a lot of thinking the last hour. It is time for me to focus on finding a job instead of spending valuable time trying to get answers for something[Opus Charger] that at this point is irrelevant to me. There is no need for me to get frustrated anymore.

622

> “None of us ….”

I quoted that bit from Teacher’s earlier post above. I should’ve cited it to:

Also: “What Gauss said!” about keeping the conversation working well. Good advice there.