Group Buy Interest?

  • Thread starter Thread starter chance
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I'm pretty sure Chance gets a discount with FedEx because he's a NAMM member.
 
Let's just say it again.

Yea Chance!!!! Thanks for all your hard work!

You Rock!

Woooohooooo!
 
antichef said:
You had to read between the lines, but drbill was hinting at something similar. :)

How much did you shipment weight, approx.?
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Yeah DrBill wasn't kidding lol.

The box is ~24"cubed @ 58Lb.
 
Another ACM-310 clip

I had the chance to use my new ACM-310s a few days ago. I've been mixing one of the shows that I recorded, and I thought I'd post a brief clip from one song. I should make clear up front that this clip isn't in any way a "pure" demo of the mic (unlike the bluegrass clip that I posted many months ago). The mic is used on the guitar, but it's mixed with several other sources - including a DI from the same instrument. The ACM-310 is mixed somewhat louder than the DI and is panned to the right (and the DI to the left), but you really won't easily be able to separate the two. So think of this as an example of the use of the 310 rather than a true demonstration of its character. In addition to the two guitar feeds, there is also a KMS105 used for the vocal and two SP-B3s used as room mics. And processing - EQ, compression, a bit of reverb, etc. Some here may recognize the singer and/or the song, but my goal is to give some sense of the 310.

 
Just a quick note
There will be no invoicing or shipping until Wednesday. I was asked to fly in my friends Beech Bonanza and sit in on a session on Catalina island for a couple of days. I need a break from my domain. I'll still have internet access, but a short break is needed to recharge my batteries.
 
chance said:
Just a quick note
There will be no invoicing or shipping until Wednesday. I was asked to fly in my friends Beech Bonanza and sit in on a session on Catalina island for a couple of days. I need a break from my domain. I'll still have internet access, but a short break is needed to recharge my batteries.
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Enjoy your trip, Chance.

:D
 
antichef said:
Definitely take it easy and enjoy the trip and any very-well-deserved break it offers -- and thanks for the heads-up - it'll save me three days of frantic console clicking! :D
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I'll keep checking anyway. Easier to maintain the habit pointlessly, than to unlearn and relearn it. :D
 
since the right parts needed to correct the 81 seem a bit hard to find, can we ask the manufacturer to send some? worth a shot?
 
cnix said:
From the PSW forum guys says this place has about 5000 of each.

http://www.digitroncorp.com
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Many of those distributors won't give you the time of day unless you are purchasing large and/or regular quantities. It's worth a shot, but I would think you'd have better luck if you organized a group buy for replacement parts.

Another option is to buy from Newark, which has unsorted stock of both parts. Then you'd have to sort through them to find the parts with high enough Hfe. I don't know how many that would take though.
 
I'm not convinced that the transistor replacement in the 81 is really necessary. The parts are running hot, but otherwise, it sounds like the issue is induced RF, which at least in my mind screams lack of shielding, not "bad component choice". Sure, moving to a component that is more resistant to RF oscillation will solve the problem, but I'm not convinced that doing so is the easiest, most efficient, or most cost-effective way to solve the problem.

Am I missing something?
 
dgatwood said:
I'm not convinced that the transistor replacement in the 81 is really necessary. The parts are running hot, but otherwise, it sounds like the issue is induced RF, which at least in my mind screams lack of shielding, not "bad component choice". Sure, moving to a component that is more resistant to RF oscillation will solve the problem, but I'm not convinced that doing so is the easiest, most efficient, or most cost-effective way to solve the problem.

Am I missing something?
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zmix's work seemed rather conclusive to me. The difference in max collector current between the correct part and the installed part is something like 10x. That, and the heat observed, would lead me to believe it's a long-term reliability problem even if no oscillation is present.
 
mshilarious said:
zmix's work seemed rather conclusive to me. The difference in max collector current between the correct part and the installed part is something like 10x. That, and the heat observed, would lead me to believe it's a long-term reliability problem even if no oscillation is present.
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Is the heat being generated by the current of normal operation, or by the current of oscillation? If the oscillation could be stopped by a small bypass cap, would the installed transistor then function within its operating parameters?

It's not clear to me if replacing the transistors resolved the heat issue in addition to the oscillation issue.

Just asking.

When/if I ever get mine, I'll be checking it out. :)
 
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