Pearl Two

[Salas]

They are a long chapter about noise. Try reading ''The Sound Of Silence'' book by Bukhard Vogel, its all the maths in there. $139 at Amazon. Or the Linear Audio Jan's electronics publications with circuit paradigm articles from Wurcer and Popa on those issues. But if you are not planing to design, better spend on good low noise parts and some proven popular circuit with fellow diyers feedback like those from Pass Labs here.

 

[Siberia]

It's not so long ago I've started to develop my soldering skills, so no intentions to design. That's for sure! Only got curious about cart output and overall gain calculations maths.

 

[Salas]

60dB is x1000 for instance and that would give 500mV from a 0.5mV cart with a bit of room not to saturate a 0dBu amp like yours given most vinyl hovers over 0dB velocities frequently enough.

 

[Siberia]

Getting to it. Slowly. Is it correct to say, that if I had a 0.2mV cart and set my phono to 60 dB, this would result to 0.2V output and then I would need only 10 dB (x3) on my preamp to be near 775mV input of my amp?

 

[Salas]

Naturally.

 

[Siberia]

I naturally want to build it and sell my GSP phono then.

 

[Tea-Bag]

Siberia - I put some cheap step ups into it, some old shure microphone ones, and lowered the gain to standard level. Sounds ******* amazing. With Soundsmith modded 103 cart, I finally am seriously happy with Vinyl, and now know it's potential it can reach. I've tried several othe pre's before this, and none come close.

 

[Siberia]

I won't have issues with my current cart and it's 6.5mV output. It was just a thought forward, what if I changed a cart after building... Congrats with the sound. Is your Denon mounted on Rega or am I messing things up?

 

[exojam]

Can someone please assist me in finding some parts I need?

I am using the spreadsheet that was put together earlier in the thread for my parts.

What I need is C2, 3, 23 and 25.

The spreadsheet shows them as this:
Capacitor, 0.1uF, Polypropylene MKP - Wima - PN=594-2222-416-4100.

I checked Mouser where the spreadsheet shows to buy them but they are no longer listed. Thanks.

James

 

[6L6]

MKP .1 uf 5mm lead spacing 100v -- this will work;

MKP2D031001F00KSSD WIMA Polypropylene Film Capacitors

This is the 5% version - http://www.mouser.com/ProductDetail...SKKXg98%2b1mxMNR5bMWJ/muzShBZbtoHHoX6Qi42QW8=

 

[Tea-Bag]

Denon is mounted on a VPI Classic

 

[exojam]

MKP .1 uf 5mm lead spacing 100v -- this will work;

MKP2D031001F00KSSD WIMA Polypropylene Film Capacitors

This is the 5% version - MKP2D031001F00JSSD WIMA Polypropylene Film Capacitors

6L6,

Thank you for the information.

I measured out all of my resistors last night and picked the ones that matched the best. Went through all of my parts tonight and have everything except those caps, C9 and R20.

Just took a look at the soldering station and I think I will be very happy with that. Hopefully in the next day or two I should be soldering some stuff up.

James

 

[Siberia]

Can someone please assist me in finding some parts I need?

I am using the spreadsheet that was put together earlier in the thread for my parts.

What I need is C2, 3, 23 and 25.

The spreadsheet shows them as this:
Capacitor, 0.1uF, Polypropylene MKP - Wima - PN=594-2222-416-4100.

I checked Mouser where the spreadsheet shows to buy them but they are no longer listed. Thanks.

James

Strange. You say Wima and when I enter the PN @ Mouser, I get Vishay.
Moreover, it says: "2.601 Can Ship Immediately".
Is it because I'm accessing EU store?

Note, it has a better tolerance of 2% and rating of 63V.

 

[Siberia]

Denon is mounted on a VPI Classic

And I'm fighting with my jealousy.

 

[exojam]

Strange. You say Wima and when I enter the PN @ Mouser, I get Vishay.
Moreover, it says: "2.601 Can Ship Immediately".
Is it because I'm accessing EU store?

Note, it has a better tolerance of 2% and rating of 63V.

Siberia,

The one at Mouser shows PN=594-2222-416-41004 as a Vishay like you state.

Since the spreadsheet I have shows the below two numbers and descriptions I am just not sure if they are the same device or if it was a type in the spreadsheet. Just wanted to make sure I got the right item.

Thanks, James

594-2222-416-4100 Capacitor, 0.1uF, Polypropylene MKP - Wima

594-2222-416-41004 Capacitor, 0.1uF, 63V, Polypropylene - Vishay

 

[exojam]

OK, I think I found the mistake. I just double cheked the original pdf from Wane and C2, 3, 8, 12, 14 16-19, 23 and 25 should be Mouser 594-2222-416-4100 (see attachement).

The speadsheet where I got the information has the listing for the caps as I showed in my post above.

Now since I was ordering basically double of what I needed I do have 21 of the 594-2222-416-41004, .1uf, 2%, 63 volts Vishay's.

So I think I should be good to go. Sorry but it's early and not enough coffee yet.

James

 

[exojam]

Is there any type of electrical cleaning spray I should use on the boards after they are all put together?

Sorry for the million questions. Thanks.

James

 

[AVWERK]

individual matching of the RIAA section is fine but when you get done, string each section together and tag each leg together with a little solder and measure each channel to make sure you have equal values for both boards, then insert caps.
This will help overall focus in the end

Regards
David

 

[Marra]

This works well for removing flux deposits.Should be available from Mouser or Digikey.

SWA400H - ELECTROLUBE - CLEANER, AQUEOUS FC, 400ML, AEROSOL | Farnell United Kingdom

 

[Tea-Bag]

And I'm fighting with my jealousy.

I sold my 2A3 amps to someone with klipshorns, sold a 1200Mk2 with some KAB mods to gather money, and then I got one still at 30-40 percent off. No regrets