bernbrue

D-AOC PCBs - the building and help Thread
« Reply #320 on: April 29, 2008, 11:24:09 AM »
Quote from: "dagoose"
BTW, i have one small issue with my beast, the neon lights flicker every couple of seconds, i think all neon lights do that but on the left channel the meter hops about 2mm from side to side when that happens.
The right channel doesn't have that.
I allready tried a different neon light without much result, maybe it's better to use a zener instead of the neon light?


I had the same effect with 1mA meters. The neon lights even went off while turning the trimpot for the meters. With the Sifam VU this problem didn´t occur. My guess: Meters above 220 uA draw too much current. Since I´m not an electronic expert, you shouldn´t nail me on that.
regards
Bernd


[silent:arts]

D-AOC PCBs - the building and help Thread
« Reply #321 on: April 29, 2008, 11:43:14 AM »
I had this with one channel on my D-LA2A, but it disappeared after a few days of use - without changing anything.
may be something has to "burn in" ? don't know ... :green:

[silent:arts]

D-AOC PCBs - the building and help Thread
« Reply #322 on: April 29, 2008, 11:45:49 AM »
Quote from: "Gold"
Has anyone tried this? It looks like Volker tried a resistor in parallel.

must have over-read this before and haven't tried it. wouldn't be hard to mod it like this.

D-AOC PCBs - the building and help Thread
« Reply #323 on: April 29, 2008, 02:19:46 PM »
OK.  This may be a very basic question here, but what are you guys using for fuses?  Fused IEC jacks?  Inline, ala Auto?  What rating?

Gold

D-AOC PCBs - the building and help Thread
« Reply #324 on: April 29, 2008, 02:39:34 PM »
I'm using some fused IEC recepticles I got at All Electronics. I just checked and they don't have them anymore. They were cheap. I thought I would use a 3ag fuse. 2.5 seems like it's cutting it close.

[silent:arts]

D-AOC PCBs - the building and help Thread
« Reply #325 on: April 29, 2008, 02:43:08 PM »
I use a fused IEC, and have no problems with a 250mA slow blow fuse at 230V

Gold

D-AOC PCBs - the building and help Thread
« Reply #326 on: April 29, 2008, 02:45:48 PM »
Quote from: "[silent:arts
"]I use a fused IEC, and have no problems with a 250mA slow blow fuse at 230V


Oh. I thought since the heater secondary was rated for 2.5A it used that much current. I guess not.

[silent:arts]

D-AOC PCBs - the building and help Thread
« Reply #327 on: April 29, 2008, 02:48:29 PM »
that's right at the secondary (9V), but not at the primary.
for 110V 500mV slow blow should be fine.

Holger

D-AOC PCBs - the building and help Thread
« Reply #328 on: May 02, 2008, 07:20:33 AM »
Is it generally possible to use 15k transformers instead of the proposed 10k's? I have some Altec 15k:15K and 15k:600R and I am wondering if they would fit.

tommypiper

D-AOC PCBs - the building and help Thread
« Reply #329 on: May 02, 2008, 01:01:46 PM »
Quote from: "cannikin"
Hey guys I just wanted to let you know I had my Power transformer built by
Heyboer Transformers, they also built my 10K:600 output transformers too.

http://heyboertransformers.com/index.shtml

The prices aren't as good as Edcor but the quality is pretty damn amazing and the output transformers is awesome.

65.00 for the power.
85.00 for the output.

They are a really cool "mom and pop" shop, nice people and easy to do business with.  Its easy, you email them with your request, they email you a price, you approve.  They will snail-mail you an invoice and you can pay via paypal (+3%) or send a check.  turnaround time is about 1 to 2 weeks.


Hi David, I'll try them.  

What secondaries and specs did you get on the power transformer?  

I just got a quote from them  $85 for the power, but I asked for shielding, maybe that was extra?

And is that price for two outputs total 85, or 85 / each?

cheers.
Imagine a wet, slightly chilled from its gas release and decompression, with water droplets condensing, sucking surface tension, slowly sliding down the side, capped by a healthy virgin froth on top..


Benny

D-AOC PCBs - the building and help Thread
« Reply #330 on: May 03, 2008, 01:11:04 PM »
Just fired my D-AOC up for the first time and everything's working perfectly.

Now it's time for cold :sam:

[silent:arts]

D-AOC PCBs - the building and help Thread
« Reply #331 on: May 03, 2008, 01:41:12 PM »
Quote from: "Benny"
Now it's time for cold :sam:

... and some nice pictures :green:  :green:  :green:

bernbrue

D-AOC PCBs - the building and help Thread
« Reply #332 on: May 03, 2008, 02:24:03 PM »
Quote from: "Benny"
Just fired my D-AOC up for the first time and everything's working perfectly.

Now it's time for cold :sam:


Fine, Benny, the so called "Jungfernbestromung" has worked. Let the pics come, yeah.  :thumb:  :thumb:
regards
Bernd

analag

D-AOC PCBs - the building and help Thread
« Reply #333 on: May 04, 2008, 03:23:22 AM »
Guinness is good.

analag
Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

[silent:arts]

D-AOC PCBs - the building and help Thread
« Reply #334 on: May 04, 2008, 03:33:45 AM »
Quote from: "analag"
Guinness is good.

this is for you :guinness:  :guinness:  :guinness:

analag, we have to add the mother of the D-AOCs to the D-AOC rack :green:
can you send me a foto of your front pannel ?

Lowfreq

D-AOC PCBs - the building and help Thread
« Reply #335 on: May 04, 2008, 04:10:05 PM »
Quote from: "Holger"
Is it generally possible to use 15k transformers instead of the proposed 10k's? I have some Altec 15k:15K and 15k:600R and I am wondering if they would fit.
I'm wondering the same about the input xfmr as I've got a cinmemag 15k:15K going unused at the moment.

Would it be as simple as strapping something across the scondaries of the xfmr? :oops:

analag

D-AOC PCBs - the building and help Thread
« Reply #336 on: May 05, 2008, 12:01:15 AM »
The mother of the AOC is mono. I will post a pic of it soon.

Cinemag 15K:15K is perfect...you can strap a 10K or a 15K resistor across the secondary. With 15K as my preference.

analag
Audio engineering suffers from misinformation, disinformation, and downright lying more than most fields of endeavour.

mikeyB

D-AOC PCBs - the building and help Thread
« Reply #337 on: May 16, 2008, 08:57:23 AM »
Since DAOC uses common ECC8X valves - would there be any problem using 12 Volt DC for heaters - not on this PCB - just thinking ahead :thumb:
making better music!

flintan

D-AOC PCBs - the building and help Thread
« Reply #338 on: May 19, 2008, 05:39:27 PM »
Do the tubes need to be matched?

[silent:arts]

D-AOC PCBs - the building and help Thread
« Reply #339 on: May 20, 2008, 03:20:57 AM »
Quote from: "mikeyB"
Since DAOC uses common ECC8X valves - would there be any problem using 12 Volt DC for heaters - not on this PCB - just thinking ahead :thumb:

I can't see a problem - but don't try it with this PCB :twisted:


Quote from: "flintan"
flintan

no - at least mine are not :green:


 

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