Whoops

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #720 on: August 27, 2009, 08:44:08 AM »
Thanks Peter,
that makes much more sense.

The Switchs are 2 x 6 Lorin

if you can find the picture and post it I'm sure no one will ask this question anymore

best regards


Whoops

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #721 on: August 27, 2009, 08:47:33 AM »
one last thing, anyone happen to have a scanned copy of the manual for this? i would love to have a look.

anyone?

I think the manual or some similar document was posted in one of the Night Eq threads,
it was just text you could copy and paste into word.
I can't find it right now

Anyone remembers this?


Brolik

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #722 on: August 31, 2009, 12:23:27 PM »
Time for another uninformed question... I've noticed that R29 and L1 are switched on the V2 silk screen, but I don't see it discussed anywhere in this thread. I've also seen them installed both ways on finished unit pics. I assume it's because it doesn't matter whether they are switched (also judging from the traces and schematic). I just want to make sure that I'm not crazy before I precede with this vaguely informed notion. Any help? Thanks.

~Matt Sommer

Whoops

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #723 on: August 31, 2009, 02:29:03 PM »
No , you're no crazy.

I noticed the same thing, and by the traces I also assumed that it didn't matter if they were switched.

probably the inductors are not even doing anything at all in this circuit

Harpo

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #724 on: August 31, 2009, 03:35:21 PM »
Quote
..I've noticed that R29 and L1 are switched on the V2 silk screen..
R29 and L1 are not switched but always connected to in-phase/hot output.

R32 and L2 are either jumpered between balanced mode or left floating/not connected in unbalanced mode and 0V instead jumpered to out-of-phase/cold output.
The other jumper (you're probably refering to) switches R47 in parallel to R26 in unbalanced mode to make up the otherwise 6dB loss.
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.  -Douglas Adams

ytsestef

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #725 on: October 06, 2009, 05:20:56 PM »
Chimin' in...

Hello everyone. I thought it would be a very interesting project, and when I tried searching for PCBs , Peter told me the Night EQ PCB is out of production. Anyone knows why? Lack of interest? Was it illegal? Are there any gerber files available so one can etch his own? Or do I have to rediscover the whole thing if I want to build one? Maybe someone else still makes them in the forum. What happened there??

I'll try searching around a bit more, then maybe I'll do as advised by Peter and post some "wanted" ad. This is sad, nonetheless, what a pity. All this effort gone to waste and such a brilliant eq out of production  :( :( :(

Cheers
« Last Edit: October 06, 2009, 05:24:49 PM by ytsestef »
Stefanos.

Slenderchap

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #726 on: October 07, 2009, 02:21:55 AM »
Just "for a laugh" I put the Nite EQ in a 500 series module last year;



Faceplate looks like this;
http://www.audiomaintenance.com/downloads/5003d_front.jpg

and I even did a transformer output option PCB;
http://www.audiomaintenance.com/downloads/5003d_eq_transformer_option.jpg

It worked just fine, but slightly differently from the original in that when you boost a band it brings the "out of band" level down as well so it makes it difficult to overload (consequently the "Sub" band has the effect that the signal gets quieter when you increase the level..... because the "out of band" is basically every thing audible)...

There was one very small error on the PCB which I have now corrected.... but did not get any made.... I was thinking about getting a few boards made and then sending the gerbers to Gustav.....

... does anyone want these ?

Colin
www.audiomaintenance.com
 

joe-electro

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #727 on: November 07, 2009, 09:54:53 AM »
Beautiful work Colin!
When I have money I buy gear. If there's any left I buy food.

Slenderchap

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #728 on: November 08, 2009, 01:24:38 PM »
For anyone who is interested..... I have done the small corrections to the PCB (although I haven't yet built one).

Here is the info;

www.audiomaintenance.com/downloads/prodigy_nite500_electrical.zip
Schematic, parts list, PCB layouts, Gerbers etc.

www.audiomaintenance.com/downloads/prodigy_nite500_mechanical.zip
Faceplate (simplified) and sideplate in FPD format

{The sideplate is purely cosmetic as all the pots are bracketed}

If there is enough interest I'll start stocking the pots and rotary switch etc....

I'm sure the Gustav will be more than willing to make the boards if there is interest.

The information has not been checked.... as I have not as yet built one from these gerber files.... although I presume they are correct, I have known Gerber generation errors to occur when  output from EasyPC

Colin
www.audiomaintenance.com



Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #729 on: November 08, 2009, 03:33:31 PM »


I'm sure the Gustav will be more than willing to make the boards if there is interest.


Thanks for the mail Colin.

Ill gather interest and see if its enough to do a run. Ive only been able to sell a few of the 9k 500 series boards, but perhaps people are holding out a bit because they are waiting for the 500 series frames from Volker.

Gustav


Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #730 on: November 16, 2009, 05:00:05 PM »
id be interested in 1 or 2 of these eq kits in the 500 format. about how much for a complete kit with board and faceplates ?

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #731 on: December 08, 2009, 06:30:41 AM »
hey guys,

i'm nearing completion of this eq and using the power boards provided with the boards (from the green pre (green psu)

have searched everywhere for the schematic to this design can only find the bom.

The bom says that the 1000uf caps are rated for 10v (mouser part number points to a 10v part) - is this correct? i thought it would at least have to be higher than the voltage of the transformer taps (15v)

if not what would a good voltage rating be? i was thinking at least double would be appropropriate? (35v)


peterc

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #732 on: December 08, 2009, 07:02:36 AM »
35v would be fine for those caps.

Peter
If opportunity doesn't knock, build a door.

Whoops

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #733 on: January 05, 2010, 09:26:42 PM »
Hi,
I would like to do a version of the night EQ where instead of having separate controls for the channels, I would only have one control for each band, controlling both left and right channels at the same time.

I was thinking about Dual Gang 470K Rev Log Pots, audiomaintenance has them.

http://www.audiomaintenance.com/acatalog/om-01-055_extended_info.html

Even if the "Air" control and "Vari" switchhad to be independent, it would be great to have only one control for the "Sub" , "40hz", "100hz", "650hz" and "2,5K"

Do you think it's possible ?

thanks
my best regards

ytsestef

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #734 on: October 12, 2010, 07:16:45 AM »
Thread resurrection! ;D

I'm about to finally start building a stereo pair and I have some questions:

1) Can this thing be powered from the SSL9k PSU? (uses 7818/7819 regs)
Why is the Green PSU a better choice?

2) Due to the facts it's going to be stereo, I want to use gainswitches instead of pots. Is this possible? How should I wire them to the board?
Stefanos.

peterc

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #735 on: October 12, 2010, 08:04:24 AM »
SSL 9k psu will be fine

In the thread there are MANY posts about using stepped gain
If opportunity doesn't knock, build a door.

ytsestef

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #736 on: October 12, 2010, 09:01:26 AM »
Thanks Peter. Ok, then 9k psu it is :D Also, can I get away with 15VA transformer, or should I go for 30VA? I'll power 2 channels. I don't know how many mA each channel consumes...

I read my stuff on the gainswitches, too (should have done that before asking)...

I will use it mainly for bus eq, so I might as well use 12-position switches only, ranging from -5 to +6 dB in 1dB steps OR ranging from -7.5 to 9dB in 1.5dB steps. Should be enough for bus eq, has enough precision and it has fixed frequency/bandwidth anyway, so, I guess it will be wiser to use it for colouring rather than correction... What do you guys think? I could actually do other stuff like boost in 1.5 dB steps and cut in 1dB steps... Any thoughts on that kind of stuff from people who have actually heard this thing?
Stefanos.

ytsestef

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #737 on: October 15, 2010, 06:42:05 AM »
What needs to be done in the "boost only" hi-shelving band if I'm using switches? Do I just use Harpo's .xls file with the gainswitch calculator and select only boost values or what?
« Last Edit: October 19, 2010, 09:49:27 AM by ytsestef »
Stefanos.

gruzina

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #738 on: December 21, 2010, 03:53:28 AM »
Hi all can you please send me the full schematic and files too  [email protected]

thank in advenced ari

gruzina

Re: 3D "AIR" EQ - "Night EQ" PCB's Complete!
« Reply #739 on: December 29, 2010, 09:48:28 PM »
please i want to buy the pcb where can i buy it peter or someone help [email protected]


 

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