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His Master's Noise: A Thoroughly Modern Tube Phono Preamp
His Master's Noise: A Thoroughly Modern Tube Phono Preamp
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Old 12th December 2017, 11:40 PM   #451
TUBESMAN is offline TUBESMAN  Philippines
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Default recommended transformer

Sowter has a chart on their site with recommendations for transformers based on your cartridge.
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Old 13th December 2017, 01:33 PM   #452
luis.martins is offline luis.martins  Portugal
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Quote:
Originally Posted by TUBESMAN View Post
Sowter has a chart on their site with recommendations for transformers based on your cartridge.
Hi Tubesman,

I found that chart, but unfortunately my cartridge is not listed there.

However, in the datasheet for the transformer that replaces the one in SY's design it says: "Suitable for cartridges in the range 2 to 15 Ohms".

I guess it will work well with my cart.

Cheers,
Luis
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Old 13th December 2017, 01:51 PM   #453
TUBESMAN is offline TUBESMAN  Philippines
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I am surprised, it seems to be a very comprehensive chart. I guess you could look at carts similar to yours.
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Old 13th December 2017, 01:57 PM   #454
luis.martins is offline luis.martins  Portugal
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Quote:
Originally Posted by TUBESMAN View Post
I am surprised, it seems to be a very comprehensive chart. I guess you could look at carts similar to yours.
You mean this chart: MC PHONO CARTRIDGE SUT TRANSFORMERS

Well, actually my cart is there, I didn't find it at first because I was expecting to find a good number of Goldring carts which is also a UK company.

After using the search in page feature of my browser I found it. It's the only Goldring cart in that list. And yes, the 1480 is one of the SUTs that work with it.

Cheers,
Luis
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Old 13th December 2017, 02:01 PM   #455
TUBESMAN is offline TUBESMAN  Philippines
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But Wait!! There's More. I see your cartridge, Goldring Elite, is this your unit? They recommend either a 1480, 9570, 9990 or 1990.
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Old 13th December 2017, 02:02 PM   #456
TUBESMAN is offline TUBESMAN  Philippines
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Yeah, we both missed it in our first pass at the chart. Glad you see it now.
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Old 13th December 2017, 02:08 PM   #457
mrdave45 is offline mrdave45  United Kingdom
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Yeah, that's on the list, gold ring elite, 500uV 8ohms?
Says you can use 1480,9570, 9990,1990.
I seem to remember that using higher ratios can cause problems s stick with 1:10. Loads of info on Rothwell website about loading them
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Old 13th December 2017, 02:54 PM   #458
luis.martins is offline luis.martins  Portugal
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Just placed an order on Mouser for all the semiconductors and heat sinks.
Next is capacitors and resistors from a different supplier and I'll start putting the PS circuits together.

I already have the transformer and some caps (will have to check which) and a pair of EH6922 gold pins. Still need to find the D3a. Does eBay sound like a a good place to shop for tubes like the D3a?
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Old 13th December 2017, 03:08 PM   #459
6L6 is offline 6L6  United States
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His Master's Noise: A Thoroughly Modern Tube Phono Preamp
D3a -

Siemens D3A Pentode Tube
| TubeDepot.com
(Insane price)

★ J A C - M U S I C ★ EMISSION LABS TUBES ★ YAMAMOTO SOUNDCRAFT ★ NOS TUBES ★ You must like: Look for the pricelist, he is selling them for reasonable $$

Siemens D3a / 7721, 4 New old stock tubes -USA only For Sale - US Audio Mart
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Old 13th December 2017, 03:21 PM   #460
luis.martins is offline luis.martins  Portugal
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Hi 6L6,

Thank you so much for the links!

The JAC Music website is the best deal I've found.
Plus, it's from Europe, so the shipping will be cheaper and there are no customs taxes.

Cheers,
Luis
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