Jinbao tubas, bad and good

[Gilligan]

As a Schiller owner who's has the Hurschbrunner clone, I can say that after 14 months of owning my horn I still like it as much or more than I did when it arrived.
I posted a full review of the horn when it arrived last year.Here's a link to it if your interested.

viewtopic.php?f=2&t=43772&p=378910#p378910

[Lectron]

I just realized that after using the JBEB 700 for some ~100 hours I do no
longer have to worry about popping sound when pulling slides



Oh...Oh no...That's a bad thing, right

Moving over to a heavier oil. Guess these valvles comes pré-worn

[MartyNeilan]

I just realized that after using the JBEB 700 for some ~100 hours I do no
longer have to worry about popping sound when pulling slides



Oh...Oh no...That's a bad thing, right

Moving over to a heavier oil. Guess these valvles comes pré-worn

You do a lot of slide pulling on a 3+1 EEb comper?

[Lectron]

I just realized that after using the JBEB 700 for some ~100 hours I do no
longer have to worry about popping sound when pulling slides



Oh...Oh no...That's a bad thing, right

Moving over to a heavier oil. Guess these valvles comes pré-worn

You do a lot of slide pulling on a 3+1 EEb comper?

Nope, but I do still appreciate compression and intonation not varying depending too much on how much lube that's left on the piston

[Wyvern]

You seem to have got a bad one Lectron! No problem with compression on the EEb I have been using since last August.

[tuba-tobias]

You do a lot of slide pulling on a 3+1 EEb comper?

I guess when it comes to draining most of us have to pull, slides or zippers.

[Lectron]

You seem to have got a bad one Lectron! No problem with compression on the EEb I have been using since last August.

Well...I use Hetmans2 oil, and going for something heavier wouldn't harm the action much
It is after all ridiculous light...

[Lingon]

...I just realized that after using the JBEB 700 for some ~100 hours I do no longer have to worry about popping sound when pulling slides...

Too bad.

...You seem to have got a bad one Lectron! No problem with compression on the EEb I have been using...

And herein lies a big problem with these instruments. Are they really so uneven? Did Lectron had super bad luck when getting more than one instrument with trouble? Or maybe did he get the ones that were rejected by other customers? Who knows?!

Clearly this is not good especially since we know that some of these instruments are very good. Therefore once again the question arises. Does JB put together their instruments in different quality levels or are they just inconsistent all over and some of the importers has very good luck, some not?

Bear with me that I repeat the comparison with Yamaha. where I just order an instrument and usually there are minimal variations between them. Now I understand that some of the JB sellers does adjust and prepare the instruments so they are fine when they reach the buyer, but not everyone does with the result that some of these instrument arrives to the buyer in condition like what happened to Lectron. Quality control at the source should be a primary concern I think, if, at least, the more skeptical persons should be interested and confident in these instruments. And if JB and other Chinese makers lives up to that standards they should earn a much better reputation I think.

Otoh, and this is off topic in this thread but interesting as a comparison, I have a related story of a colleague that some years ago ordered a Bach bass trombone. It was at that time the importers and stores had more than one instrument in stock to try out. Well, he did test about thirty (30) of them and no one was as good as it should be. eventually he was on his way to skip the project altogether, but somehow the store did get a return from another customer and at last he got an instrument that he liked. Please do not start flaming now because it was just an example and don't meant as a war declaration...

[Misterguru]

You do a lot of slide pulling on a 3+1 EEb comper?

I guess when it comes to draining most of us have to pull, slides or zippers.

Well that DEPENDS on the length of the concert!

BUTT you are right, MOST of us pull slides or zippers.

[Lectron]

I do not believe it is uneven. I think this is the quality to expect

One might think the tolerances are tighter on the 800 and 600 as
compression is not an issue there, but those are easier valves to make than the
long compensated ones.

We are talking 4 valves here, remember. It's not one out of four failing.
I remember Vince, despite selling them, commented on the valves not being good.

Still..For the price it's not at all a bad playing instrument, it just shouldn't be compared
to a 981, wilson etc in terms of mechanical quality as it's far below that.
Claiming or insinuating it's not is in best case unawareness of it's weaknesses

It might change, but I'm afraid then so would the price ...

[PMeuph]

........ it just shouldn't be compared to a 981.....

I wonder why some many people compare it to the 981.... Isn't thecomp EEb a copy of the YEB-632. (Therefore, a copy of a copy)
Shouldn't we just compare it to that horn....

http://www.yamaha.co.jp/english/product ... 2/main.htm" target="_blank

[Lectron]

It's actually closer in design to my old (preferable) short/low leadpipe 981
Reinforement parts looks more like the 632, yes

[MartyNeilan]

........ it just shouldn't be compared to a 981.....

I wonder why some many people compare it to the 981.... Isn't thecomp EEb a copy of the YEB-632. (Therefore, a copy of a copy)
Shouldn't we just compare it to that horn....

http://www.yamaha.co.jp/english/product ... 2/main.htm" target="_blank" target="_blank

There were 981's... and there were 981's...
Over their long and storied history, Besson unfortunately had one of the widest ranges of quality of their instruments, from "world class" to birdbath.
Now, listening to Fletch or Patrick Harrild play one makes it all better!

[Lectron]

A heavier lube helped out and improved intonation and a few tones that was close to missing (d & Eb above staff)

Any suggestions on a heavy lube that stays....and of course lubes?
I now tried Hetmans 3, but there's room for more

[aqualung]

It's actually closer in design to my old 981

When we get bored in the back row while the conductor is drilling the cornets, we interchange parts between our JinBao 700 and our B&H Imperial.

[Lectron]

It's actually closer in design to my old 981

When we get bored in the back row while the conductor is drilling the cornets, we interchange parts between our JinBao 700 and our B&H Imperial.

^^

[sousaphone68]

Lectron you have been doubly unlucky in that firstly your Eb has not worn in as well as mine and secondly as you imported directly you have little or no easy recourse. Which is why I bought mine from an importer who speaks the same language as me and trades from a country whose consumer protection laws are both strong and relatively easy for me to use if the need had arisen.
Have you tried to claim any warranties yet?
Your posts mention that the factory was willing to work with you maybe they might send you some pistons.

If it will help I can measure my pistons and casings for you to compare with yours.

[Lectron]

Why not make is simple..

Pull the first tuning slide 2-3". Wait a few 5 sec and then push the 1st valve.
Describe the sound.