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Old 10th March 2010, 07:22 AM   #1091
massimo is offline massimo  Italy
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Quote:
Originally Posted by Algar_emi View Post
Still no part number for the Selection and In/Out connectors?
DCB1 BOM says mouser 538-22-23-2031, 538-10-11-2033 and 538-08-50-0114 for 3 pin M/F connectors + crimps
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Old 10th March 2010, 07:45 AM   #1092
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Although, I have preferred to directly solder the wires to the board without using the pin headers. Less moving parts in the signal path if you don't plan to constantly unmount your buffer.
But a pair of pins shouldn't hurt at all, by the way. They are quite tight.
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Old 10th March 2010, 08:56 AM   #1093
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Originally Posted by woodturner-fran View Post
yep, I think thats what we all got Sylvain! Too bloody consistent!


Anyway, tonight I swapped in some Bennic 4.7uF caps instead of the Carli caps. These caps sounded really good as output caps in my phonoclone - and I rolled quite a few. So, I'll let them run in for a little and see how they go. Next up after these are smaller value GE caps.

All caps so far are from Madisound.

Fran
any difference between 3 options - el cap 100 uF, 4,7 uF MKP caps ?
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Old 10th March 2010, 02:06 PM   #1094
Salas is online now Salas  Greece
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Originally Posted by Algar_emi View Post
Here the caps installed.
Nicely fitting parts.
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Old 10th March 2010, 02:08 PM   #1095
Salas is online now Salas  Greece
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Originally Posted by samoloko View Post
any difference between 3 options - el cap 100 uF, 4,7 uF MKP caps ?
Wait for more evaluation. We say its rather positive up to now if able to fit film caps.
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Old 10th March 2010, 08:58 PM   #1096
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Hey Algar-emi!! I know it looks crap!! its part of the fun!!

anyway in what is now becoming a regular occurence 'round here, this is tonights instalment!!

The bennic had a little bit more "presence" than the carli cap. piano note strikes more dynamic and voices more holographic.

So after another listen to confirm those impressions, I went ahead and changed the caps again. This time to smaller values, 0.33uF GE caps. These are also available for cheap from Madisound - can't remember but maybe 20 or 30c each.

GE cap at madisound

Ps.... I have a question. When I first power on the DCB1, when the cover is off, I can hear a high pitched noise from the board. Its like a high frequency "tizz" type sound. After its all warmed up its silent. No noise observed at any time through the speakers. Noise subjectively seems to come from the mosfets.

has anyone else seen this and is it anything to be worried about?


Fran
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Old 10th March 2010, 09:25 PM   #1097
Salas is online now Salas  Greece
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No I haven't heard of that. Could be momentary oscillation specific to your build. Solder those 220R directly to their G pins with just 1mm leg towards G. Underneath board, the closer you can to where the G pins stem out of the plastic cases. It does not matter if the input side resistor's pin is long to the board.
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Old 10th March 2010, 11:57 PM   #1098
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Thanks Massimo for the connectors part numbers.
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Old 11th March 2010, 12:11 AM   #1099
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Default Hi udailey

just wanted to let you know that emailed you my address for the 2sk170bl's (cypress ave...)

thanks,
bruce w (aka tincanear)
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Old 11th March 2010, 12:50 AM   #1100
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Is the B1 output in danger at all if it's shorted to gnd for 5 to 10 seconds? I may add a hard-wired mute switch or a 2nd relay...
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