[KolfMAKER]

I only have a picture, so I can’t look around the component.

But I believe you are totally right Martin. Your explanation makes perfectly sense!

Thanks again. I am getting closer to have all information for replicating the original!

[KolfMAKER]

#22 & #34:

#31:

[KolfMAKER]

Thnx a lot Martin, clear!

At the bottom right on the PCB, there’s two light brown capacitors: #27 & #34. And on the other side there also two: #31 & #32.

The schematics says:

• #27 = 22n
• #31 = 22n
• #32 = 0,1u
• #34 = 0,1u

The picture of the components says:

• #27 = 22uF, 160v
• #31 = 22uF, ?v
• #32 = ??, ?v
• #34 = 0,1uF, 160v

 

Questions:

1. I guess the picture is right and the schematics to be ignored on this point?
2. Are these ‘Orange Drop’ Capacitors?
3. Are they all 160v, and this it matter of the voltage of the replacement differs?
4. I guess #32 is also 0,1uF?

 

[KolfMAKER]

@Mexking

Thanks for sending the bottom view picture!
Yes, I am aware that my trace image has to be mirrored.

Question
The board side that sticks into the slot (so where the 8 tracks in a row are), has 8 notches.
Can you please let me know how deep they are?

I think they are a little less deep than the 6mm notch on the other side of the board.

[KolfMAKER]

At the moment I am in preparation of making the PCB. My first step is to get the copper traces on a board.

Therefor I have to position and size the image of the copper traces perfectly. I have that picture (see picture below), but it has no outer/PCB border lines, so I have to find out how to size and position this image. (Obviously to get size and proportion equal to the original PCB)

Questions

1. Does anyone have such picture of the copper traces pattern, including outside/PCB border lines?
2. @Mexking: do you have a picture of the bottom side of the pre-amp board?

 

[KolfMAKER]

Update:

I have now collected most information to reproduce the original B&O BeoGram 1000 RIAA pre amp extension board.

1. PCB layout (including drawing of the copper traces)
2. Components & specifications
3. All dimensions in mm of the PCB board

1 & 2 in this post.
3 in this thread:

BeoGram 1000 Pre-Amp PCB: what are the dimensions?

About components, I will continue in the next post in this thread.

[KolfMAKER]

@Mexking

This is perfect information, thanks so much !!!

I will start to re-produce the original BeoGram RIAA preamp.

Fantastic!

[KolfMAKER]

That is a way of course. Measuring the slot size, and calculating the other dimensions from there.

Maybe I will post a seperate question for measurements. I guess someone on the forum will have a board, to measure all sizes. If I find those, I will post here what it is.

Thnx

[KolfMAKER]

@Chartz

Thanks very much for sharing these pictures! That makes it a lot easier to try to make one myself!

 

Question
Since I do not have a pre-amp board at hand, do you have the outside dimensions of the PCB?

[KolfMAKER]

Thanks all for your responses and contributions!

@Matador

I have been questioning that myself too. If I look at pictures of the pre-amp board, it seems it is not unthinkable to re-make it. Even in the same look & lay-out as the original. It even makes me wonder if maybe someone did that … (?)

 

@premiumverum

That’s a good suggestion! I will check with Dillen.

[KolfMAKER]

Thanks for referring to Peter Pan’s diagrams Guy, that made it clear!

I like the visual way of understanding the pin layout. In the end, it’s easy to make a mistake if you don’t understand the interpretation of sides: male/female and pin/hole side or solder side.

So a picture like Peter Pan is using, helps a lot:

[KolfMAKER]

@Matador

Just to be sure …

When looking at the picture you added about the pin-numbers and what they mean:

1. Is the view of this picture, the male connector from the backside (soldering side)?
2. Are the ground wires (of the input and output cables that I need to combine to the DIN), combined on PIN 2?

[KolfMAKER]

I would also be interested, and to know of there’s an English version.

[KolfMAKER]

Of course, I understand its Steve’s business. 🙂
But I do not have to know how the cable has been configured internally.

I just want to understand if this is only a Mini-Jack-to-DIN cable …
Or that it comes with something else for the 5-volt/trigger signal.

@Steve: maybe you like to respond to this?

[KolfMAKER]

Did you connect a Powerlink or RCA cable to one of the connectors?

what do you see and hear when you do that?

[KolfMAKER]

@Steve

Very interesting the Mini-jack to RCA cable also has a trigger signal.

But for my understanding, the trigger signal needs to be 5v on Pin 4.

Where do you get the 5v to be used on Pin 4 to activate the B&O speaker amp to get from stand-by to active? Hoe does that work with this cable?

[KolfMAKER]

Hi Lawso,

1) What do you prefer; a) to have an external device to add streaming capabilities, or b) an internal integrated solution?

2) To which B&O model would you like to add these capabilities?

[KolfMAKER]

@Steve

Great comment Steve.

How does the (for instance) Apple Airport generate a trigger signal for the BeoLab?

 

By the way. Is it possible to see the linked product when your website is temporarily closed?

I understand your not 24/7 available to follow-up on everything. Though I can imagine that you keep all informative parts of your website accessible, and close ordering and contact form. Would that work for you?

[KolfMAKER]

Thanks for your replies guys!

I mainly wanted to know if the pin 3 & 5 and pin 2 & 4 would work simultaneously. So thanks for confirming.

Concerning the cable … the one I need will look a little bit different. I need to split from DIN to a) mini-jack and b) RCA female. But that’s no issue for me, to make one myself.

[KolfMAKER]

Thnx to all, this is a great experience to have such great responses so quickly on the BeoWorld forum!

Additionally I should mention, the external recorder is non-B&O. It will be a vintage Nakamichi 600 cassette deck.

Not being able to control this external recorder as a B&O device is not an issue. For me it is just important that there is a L & R channel OUT, that I can pick up via the Auxiliary connector on the back of the BeoSound 3200.

So from all your information I conclude it is possible and will work. As long as I use:

• Pin 1 > Left out
• Pin 2 > GND
• Pin 4 > Right out

As mentioned and described in the response and picture of Matador.

Thanks!

[Author]

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