Working on a 124 BOM. Name those parts!

[Joost]

I am working on a 124 BOM and I want to get the parts right. Carbon Film, Metal film, etc

I want to do it vintage correct, so Sprague Elcos etc

I know that:
Signal path resistors carbon film(1w)
Cathode resistors; metal film(1w)
Anode resistors: metalfilm 2w or RN65 1w
Screen grid resistors; 5w Dale rs5
Coupling Capacitors: Orange Drop 6PS series

I assume the different resistor designs in the layout signify different types of resistors. Can you help me identify them for the BOM?

Feel free to add suggestions for other parts as well. We can then add this BOM to the 124 files and make it complete

[img:154:103]http://www.familieassink.com/documents/gridresistor.jpg[/img]
[img:98:135]http://www.familieassink.com/documents/ ... sistor.jpg[/img]
[img:50:82]http://www.familieassink.com/documents/resistor3.jpg[/img]
[img:102:106]http://www.familieassink.com/documents/resistor4.jpg[/img]
[img:54:135]http://www.familieassink.com/documents/resistor5.jpg[/img]

[Structo]

Here is a couple BOM lists that I found on this forum a while back.
You may have to weed through them for your build but just about everything is documented.
Be warned that parts go obsolete all the time so you may have to order from more than one supplier to get all the parts.

Mouser doesn't carry the Sprague 5uf 25v bypass cap anymore.
I used the 5uf 50v ones.
http://www.mouser.com/Search/ProductDet ... TVA1303-E3

[Joost]

Here is a couple BOM lists that I found on this forum a while back.
You may have to weed through them for your build but just about everything is documented.
Be warned that parts go obsolete all the time so you may have to order from more than one supplier to get all the parts.

Thanks for those. I had found the top one, but it was inaccurate on certain parts (wrong PT, the resistors aren't right either for 124)
so I figure it might be worth while to make one for 124

So....any and all answers/suggestions welcome

[ic-racer]

The problem with all the BOMs that I know of is that most of the parts for an amp of that vintage are no longer available. So, if the BOM is accurate, it is un-useable. Once you start substituting parts for stuff that you can easily order, then it becomes an individual thing, which may not be applicable to another amp builder.

[Joost]

I hear ya, but still, it's good to have a BOM that names the parts that are the closest modern equivalent. So I am open to all suggestions

[Structo]

In case you don't have it, here is the descriptive text for #124 written by Gil.

It describes some of the circuit and what parts were used.
Also you should listen to ic-racer because I believe he built a real close clone of #124 using as many of NOS parts as he could find.

Link to the photos.

http://personalpages.manchester.ac.uk/s ... 20%230124/