Dact CT2 for BOSOZ

gchrist · 29th July 2003, 05:56 AM

I have read as many threads as possible about the volume selector for the Balanced Line stage. Unfortunately nobody can dictate a balanced 4gang 5K pot for a reasonable price. I beleive that once building such a preamplifier you must buy a good pot. I beleive that the Dact Ct2 fits the price nicely but the problem is that it is 10K. Is this a problem? Can I bypass this problem and how? Also take into account that we in Europe do not have the ability to easily shop from US shops due to customs and courrier costs involved. The dact can easily be baught in Europe.
If anyone can give an alternative solution I would be more than pleased.

Thanks
George

Nickolas K. · 30th July 2003, 12:15 PM

Why don't you take a look at Elma stepped attenuators?

Borbely would be a great start.

Nick

till · 30th July 2003, 12:19 PM

Quote:

If anyone can give an alternative solution I would be more than pleased.

volume control with relais from
http://www.passlabs.com/pdf/aleph/apserv10.pdf

gchrist · 30th July 2003, 12:45 PM

Nickolas thank you, I will check Borbelies Elma attenuators. The relais solution is a bit complex for me.

Thank you for your replies

gchrist · 30th July 2003, 12:58 PM

Nickolas,

I only found the Elam series N audio switches to be ready made with resistors already soldered on the attenuator, but this pot is for 10K or bigger resistance!!! It is not available for 5K resistance. I will keep on looking.

gchrist · 31st July 2003, 05:48 AM

Nickolas,

In the past you were taking about the BI Tech. 6670 pot. Where can I buy it in Greece? The dealer Micronics Ltd does not have it.

Thans

jh6you · 31st July 2003, 11:47 AM

This could be one solution among others.
Use the input P1 and P2 of 10K as a volume.
Remove the output P3 and P4, or use a simple output voltage devider (of Ra + Rb = 5K).

antness · 31st July 2003, 06:34 PM

why not buy a goldpt stepped attenuator kit and solder in your own resistor values?

there are several websites that compute those values for you

Bill Lummus · 5th September 2003, 02:04 PM

I just received an email from Goldpoint. They will assemble a "custom" 5K pot for no additional charge.

29th July 2003, 05:56 AM	#1
gchrist diyAudio Member Join Date: Mar 2002 Location: Athens Greece	Dact CT2 for BOSOZ I have read as many threads as possible about the volume selector for the Balanced Line stage. Unfortunately nobody can dictate a balanced 4gang 5K pot for a reasonable price. I beleive that once building such a preamplifier you must buy a good pot. I beleive that the Dact Ct2 fits the price nicely but the problem is that it is 10K. Is this a problem? Can I bypass this problem and how? Also take into account that we in Europe do not have the ability to easily shop from US shops due to customs and courrier costs involved. The dact can easily be baught in Europe. If anyone can give an alternative solution I would be more than pleased. Thanks George

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30th July 2003, 12:15 PM	#2
Nickolas K. diyAudio Member Join Date: Apr 2002 Location: Athens	Why don't you take a look at Elma stepped attenuators? Borbely would be a great start. Nick

30th July 2003, 12:45 PM	#4
gchrist diyAudio Member Join Date: Mar 2002 Location: Athens Greece	Nickolas thank you, I will check Borbelies Elma attenuators. The relais solution is a bit complex for me. Thank you for your replies

30th July 2003, 12:58 PM	#5
gchrist diyAudio Member Join Date: Mar 2002 Location: Athens Greece	Nickolas, I only found the Elam series N audio switches to be ready made with resistors already soldered on the attenuator, but this pot is for 10K or bigger resistance!!! It is not available for 5K resistance. I will keep on looking.

31st July 2003, 05:48 AM	#6
gchrist diyAudio Member Join Date: Mar 2002 Location: Athens Greece	Nickolas, In the past you were taking about the BI Tech. 6670 pot. Where can I buy it in Greece? The dealer Micronics Ltd does not have it. Thans

31st July 2003, 11:47 AM	#7
jh6you Account Disabled Join Date: Aug 2002 Location: Near to the Pacific Ocean	This could be one solution among others. Use the input P1 and P2 of 10K as a volume. Remove the output P3 and P4, or use a simple output voltage devider (of Ra + Rb = 5K).

31st July 2003, 06:34 PM	#8
antness diyAudio Member Join Date: Dec 2002 Location: Virginia	why not buy a goldpt stepped attenuator kit and solder in your own resistor values? there are several websites that compute those values for you

5th September 2003, 02:04 PM	#9
Bill Lummus diyAudio Member Join Date: Jun 2003 Location: Nashville, TN	I just received an email from Goldpoint. They will assemble a "custom" 5K pot for no additional charge.

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