Group Buy Interest?

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As best I can tell, there seems to be a handful of defective 84s and 73s, but it seems to be the exception rather than the rule. The 81 is the only one with widespread problems, and even those are good pres as long as you don't use the EQ section.

I'm working on a series of video demonstrations how to pull the boards, swap out the transistors, and put shields around the transformer and inductors. I'm not sure when I'll have time to finish them, but I've done the recording part of the transistor swap, and I hope to record the other one soon. Pretty scary bringing up hundreds of watts of halogen flood lights in my TV room, but.... :)
 
ausrock said:
2) a warranty that isn't worth the paper it's written on.
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That remains to be seen. One of my ACMP-84s was DOA; when I posted a note to one of the forums about it (PSW, I think) Chance responded quickly that he'd replace it as soon as the initial shipping was complete.

Of course, if you're claiming TnC needs to fix/upgrade/replace *every* ACMP, then yeah, I wouldn't expect the warranty to cover that.
 
Has anybody done a poll to see how many are useable as is?

One thing that doesn't give me confidence in the long term, is the comments
from some of the more accomplished people who are analyzing these.

Comments about the design, some of the parts themselves, and the assembly quality.

The photo of the transformer core that was made of scrap metal pieces
was pretty funny.
 
drBill said:
:D LOL :D

Back at it I see, eh??

Thanks for the tip.

I'm using my unuseable TNC pre's alongside my API's, Shadow Hills, Purple's and D&R's - E V E R Y D A Y, thank you. And quite often they get the nod over any of the other pre's I have. And they are broken according to you. Hmmm Go figure. Sometimes -- gasp -- I even use the EQ, but don't tell anyone.

Maybe I'd better make an appointment with my audiologist.

bp


PS - Tell alan "hi" from all of us..... :D
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Since when did the term "a bunch", necessarily include EVERY (in this case) preamp from the GB. I'm well aware that you (and others) are fortunate to be having no major issues........more power to you ;)

:cool:
 
ausrock said:
Since when did the term "a bunch", necessarily include EVERY (in this case) preamp from the GB. I'm well aware that you (and others) are fortunate to be having no major issues........more power to you ;)

:cool:
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Well, I'd think that if there's "a bunch" of them messed up, that between people that I know who have them - out of 17, there would be at least one that wouldn't work don't you think??? But maybe no. There's at least 3 or 4 units that are perfectly quiet - zero hum wide open with EQ in and cranked. But I know, that's not the popular viewpoint these days.
 
drBill said:
Well, I'd think that if there's "a bunch" of them messed up, that between people that I know who have them - out of 17, there would be at least one that wouldn't work don't you think??? But maybe no. There's at least 3 or 4 units that are perfectly quiet - zero hum wide open with EQ in and cranked. But I know, that's not the popular viewpoint these days.
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OK, sorry to nit-pick but following your lead, in your words only 3 or 4 units out of 17 are "perfectly quiet", so let me ask you, out of the remaining 13 or 14 units, what issues, if any, do they exhibit? Let me put it another way...........are they 100% useable with absolutely no issues?

:cool:
 
zorf said:
The photo of the transformer core that was made of scrap metal pieces
was pretty funny.
Click to expand...

Exactly. Steve Hogan's deconstruction and analysis of the transformers explains why many of the preamps have hum problems but some do not.

It really is worth the taking a few minutes to read his analysis and comments. He raises the issue that TnC is now relying on the engineering expertise of the DIY community to troubleshoot and re-design the preamps, for free. The revisions will then be incorporated into the next production run. So both the vendor and TnC benefit from the troubleshooting and redesign activity that is taking place across four forums - with very sophisticated work being done at The Lab.

This kind of activity could have happened before the products were manufactured. But this would have required an acknowledgement by Chance of his own limitations and those of his "design team".
 
Further to my previous announcement--especially in light of how this thread is seemingly devolving into recriminations--when shipping of this round has completed this thread will close. That appears to be imminent, so I am setting a provisional date of March 15. I would encourage the principals of the group buy, if they are so interested, to open a thread on Free Ads to continue transactional discussions. Please, group buy members, for the usefulness of such a thread, limit it to transactional information!

I would further encourage discussion of ACMP repair on the DIY board; it's a very nice board and we have a few threads going on this topic!

As always, for general ACMP discussion, there is the board right below this one . . .
 
You have to be joking!!!

The bulk of posts relate to GB issues, no-one is reverting to abuse, etc., so where's the problem?

:cool:
 
Ouch, 11 days to get our stuff straight and find a home for this discussion. Just when we were getting to the bottom of it. Well there are puh-lenty other threads (as MSH mentioned) where we can go to further the discussion. We just have to be careful not to let it get too divided and diluted.
 
ausrock said:
You have to be joking!!!

The bulk of posts relate to GB issues, no-one is reverting to abuse, etc., so where's the problem?

:cool:
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As I mentioned in my earlier post, the basic problem is it's in the wrong forum. It always has been, but at least the earlier rounds it was mainly about microphones. Now this thread is just a long discussion about repairing preamps. So take it to the DIY board, where there are already good threads, or the Rack, which is more appropriate as well. Transactional discussions need to be on Free Ads, because members who want a forum free of such communication are entitled to that.

What's more, the principals of the group buy essentially ignore this thread, probably because there is so much traffic unrelated to transactional issues. Everyone will be best served when information is organized in its proper forum. It is extremely difficult to locate information on this thread as it stands.

Including my first post, I have given more than a month's notice, and if there is a compelling reason on March 15 to extend this thread, I will consider that.
 
tarnationsauce2 said:
Ouch, 11 days to get our stuff straight and find a home for this discussion. Just when we were getting to the bottom of it. Well there are puh-lenty other threads (as MSH mentioned) where we can go to further the discussion. We just have to be careful not to let it get too divided and diluted.
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13 days actually ;), and I mentioned this three weeks ago, but didn't set a date because I was waiting for Chance to finish shipping.

You know, dgatwood did a lot of hard work on his pre, shared it all publicly with pictures, etc. on DIY, which is a great service to the Group Buy. But he really hasn't gotten the attention he was due because of this expectation that Everything Must Be Here.

I mean, if there was a private Group Buy BBS, would there only be a single thread? That's a fairly insane way to run a board . . .
 
mshilarious said:
You know, dgatwood did a lot of hard work on his pre, shared it all publicly with pictures, etc. on DIY, which is a great service to the Group Buy. But he really hasn't gotten the attention he was due because of this expectation that Everything Must Be Here.
Click to expand...
How 'bout a link? I haven't seen anything he's posted there.
 
i'm ok with closing the thread, it has gotten unwieldy.

I wish there was a way to reduce the clutter on these types of forums.

when i use the search function, it can take a long time wading through overlapping posts to try and find something.

Is that just because of the volume of traffic here?

Or, just because of the less than full time pro status of most
of the community?

In this case ( group buy), there are already a bunch of related threads going.

I'm starting to think group buy needs a site of their own, or maybe
a separate section.

after all, room was made for a section on cats.
 
zorf said:
after all, room was made for a section on cats.
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You raise some good points. We mods have asked for a board reorganization, but the board owners have not made a decision on that yet. That said, my preference is for fewer Brand forums, not more. I would like to close about half of them . . . but don't hold your breath waiting for that to happen . . .

Several people have offered to create a private TnC forum, but as far as I know the principals have not seemed interested? Not sure there.

I am liking my idea of extracting all of the repair posts and moving to a separate thread on DIY. That's a huge task though, it will take me some time . . . I keep thinking what if all the repair info since Dec. 2008 when antichef opened that thread were there? That would save a lot of work . . . and we'd have a thread more like Prodigy Pro has. But I will have to create a new thread for that, since it would make a mess of antichef's thread if I merged them :(

Anyway, let me know if there are objections to that, again I will not move posts here until after the thread is closed . . .
 
ausrock said:
are they 100% useable with absolutely no issues?

:cool:
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For my purposes - yes, they're 100% useable. For those who need massive EQ - no. This is no new issue. We've known this for MONTHS. It does not make them un-useful or a bad purchase IMO.
 
mshilarious said:
Further to my previous announcement--especially in light of how this thread is seemingly devolving into recriminations--when shipping of this round has completed this thread will close. That appears to be imminent, so I am setting a provisional date of March 15.
Click to expand...

Sorry Mr. Moderator, but that is plain stupid. I hope the owners of the site enjoy watching the log-in's and hits to the site drop. I would guess 20% or maybe more......

If unwanted here, there are plenty of other places to discuss.....:mad:
 
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