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Old 13th May 2011, 04:25 PM   #1
JoshK is offline JoshK  Canada
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Join Date: May 2004
Location: Toronto, ON
Default Ergo Uber-Cole Q

Can the uber-cole use D3A's in the output spot? I've been eyeing this phono stage, not really wanting to build my own. However, I have plenty of D3A's but no 6688s.
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Old 14th May 2011, 03:03 PM   #2
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Hi,

Quote:
Originally Posted by JoshK View Post
Can the uber-cole use D3A's in the output spot? I've been eyeing this phono stage, not really wanting to build my own. However, I have plenty of D3A's but no 6688s.
It would need the Bias adjusted. Write to Simon and ask if you can send a pair over to be fitted and the adjustment made, if you buy it.

Note that a D3a will give nearly 6dB more gain.

Ciao T
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Old 16th May 2011, 03:26 PM   #3
JoshK is offline JoshK  Canada
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Join Date: May 2004
Location: Toronto, ON
thanks Thorsten. I somehow thought the mu (triode strapped) was similar but I see it is different.
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Old 17th May 2011, 06:50 AM   #4
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Hi,

Quote:
Originally Posted by JoshK View Post
thanks Thorsten. I somehow thought the mu (triode strapped) was similar but I see it is different.
It does not mean the D3a cannot be used, just that the circuit needs small chages and that you will have nearly 6dB more Gain.

Ciao T
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Old 15th December 2011, 07:22 PM   #5
JoshK is offline JoshK  Canada
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Join Date: May 2004
Location: Toronto, ON
Also, I noticed that there is one MM input and one MC input. Can they be used simultaneously, with a switch or something. I have two arms and was thinking of using my existing HOMC and obtaining a LOMC for the other arm.
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Old 15th December 2011, 07:46 PM   #6
Previously: Kuei Yang Wang
 
Join Date: Nov 2002
Hi,

Quote:
Originally Posted by JoshK View Post
Also, I noticed that there is one MM input and one MC input. Can they be used simultaneously, with a switch or something.
There is a switch.

Quote:
Originally Posted by JoshK View Post
I have two arms and was thinking of using my existing HOMC and obtaining a LOMC for the other arm.
Sure...

Ciao T
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Old 15th December 2011, 08:49 PM   #7
JoshK is offline JoshK  Canada
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Join Date: May 2004
Location: Toronto, ON
ordering soon...
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Old 6th May 2014, 04:39 PM   #8
JoshK is offline JoshK  Canada
diyAudio Member
 
Join Date: May 2004
Location: Toronto, ON
Does anyone know what the output impedance of this phono is with the 6688? I purchased the standard one (not modified for D3A as discussed before). I also use the Tram 2 OTL preamp and would like to locate my vinyl setup somewhat far away from rest of system (~4m or so). However, I don't want to compromise the performance too much.

I know the Tram 2 has a Zout of 500ohms, so I could locate the preamp near the phono is necessary, but would rather not.
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Old 28th July 2014, 02:48 PM   #9
JoshK is offline JoshK  Canada
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Join Date: May 2004
Location: Toronto, ON
Bump for output impedance of the Uber-Cole, does anyone know the Zout? Or has the schematic so I can work it out?
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