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Old 20th March 2013, 11:06 AM   #201
AndrewT is online now AndrewT  Scotland
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Clave's post195 shows the protection diodes perfectly.

This is shown on very many schematics.
Sometimes just two inverse parallel diodes, sometimes just a single diode to protect against reverse voltage on a polar electrolytic.

This diode protection, but using HIGH current diodes, should also be applied to the resistor that separates the Signal Ground from the Power Ground. Two inverse parallel 1n4001 pass Fault current that comes in via the Interconnect from a faulty piece of mains powered gear and allows it to pass to Chassis and thence to Protective Earth. The Fuse in the Faulty gear blows and the user is saved from electrocution. This is one I learned of fairly recently on this Forum. But if you don't read you don't see the advice.

But the problem seems to be that some Members get so engrossed in their pet project that they do no research and miss all these tips and when a Member points out their lack of research it is interpreted as interfering and unhelpful.
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Old 20th March 2013, 02:40 PM   #202
Reality first!
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Quote:
Originally Posted by madisonears View Post
Is there a reason the specified resistor must be used? Must it be MELF? This loads the mute pin. Is there any signal passing through it?
Hi Tom,

during Beta I was experimenting 1206 KOA RK73 in place of the specced MELF carbon film for R2 and I was experiencing some lack of bass and fullness.

When the carbon melf come back also bass and fullness I was used to come back...

So yes R2 has an effect on sound and the carbon MELF seem so far the best bet.

Probably a 1206 Susumu would also fare very well but with a bit less impact.

Other MELFs are metal film, the specced one is carbon film 2%.

Buyed locally the MELF costs around 0.76 each, most of the cost is the shipping fee...

One nice pic:

Click the image to open in full size.

Boards arrived sooner than expected...
Attached Images
File Type: jpg DSC_0428.jpg (281.5 KB, 358 views)
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ClaveFremen "Bailando Salsa en el Sietch"

Last edited by ClaveFremen; 20th March 2013 at 02:46 PM.
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Old 20th March 2013, 03:03 PM   #203
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Looks awesome Dario
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Old 20th March 2013, 03:32 PM   #204
syklab is online now syklab  Hong Kong
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Quote:
Originally Posted by voxxonline View Post
Add me too please
for 1 set
4x Elna RJHs -> 4.5
2x CMA0204 for R2 ->2.5

Pinnocchio 1 set
ivanslade 1 set
voxxonline 1 set
syklab 1 set
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Old 20th March 2013, 06:12 PM   #205
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Quote:
Originally Posted by ClaveFremen View Post
Boards arrived sooner than expected...
A really nice pic
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Old 20th March 2013, 10:25 PM   #206
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Default More pics

I've attached more pictures... boards are gorgeous.

Tomorrow I'll build two monoblocks as a quality check, after that I'll order parts for those that asked it.

Quote:
Originally Posted by syklab View Post
4x Elna RJHs -> 4.5
2x CMA0204 for R2 ->2.5

Pinnocchio 1 set
ivanslade 1 set
voxxonline 1 set
syklab 1 set
I imagine that each partecipant is asking for both Elnas and CMAs, right?
Attached Images
File Type: jpg IMG_2381_1024.jpg (263.8 KB, 151 views)
File Type: jpg IMG_2382_1024.jpg (388.8 KB, 151 views)
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ClaveFremen "Bailando Salsa en el Sietch"
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Old 20th March 2013, 11:05 PM   #207
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Dario yes-both.
Do you ever sleep ?
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Old 20th March 2013, 11:32 PM   #208
Reality first!
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Quote:
Originally Posted by voxxonline View Post
Dario yes-both.
Do you ever sleep ?
From time to time...
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Old 20th March 2013, 11:56 PM   #209
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yes to both
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Old 21st March 2013, 02:49 AM   #210
CxTurbo is offline CxTurbo  Canada
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4x Elna RJHs -> 4.5€
2x CMA0204 for R2 ->2.5€

2 Sets for me please.

James
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