Re: Audio research SP6A cap upgardes? - Keith Lockwood

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Re: Audio research SP6A cap upgardes?

Posted by Keith Lockwood on May 1, 2004 at 10:06:09

In Reply to: Audio research SP6A cap upgardes? posted by croft on April 30, 2004 at 15:44:56:

croft,

The InfiniCap is from TRT and not from REL. The TRT DynamiCap has for the most part replaced the InfiCap other than for some OEM stuff like what ARC uses in their current stuff. ARC seems to like the TRT caps in their current line. I put InfiniCaps in my SP 9 to replace the older TRT WonderCaps.I took it to a whole new level. I put DynamiCaps in a friends LS 7 with great results. It sounds much more transparent, has better harmonic richness, and better frequency extension and bass control than it did with the REL and WonderCaps caps that were there. Steve at Great Northern Sound seems very fond of the new Cardas Caps, might be worth checking out too. I am sure that the AuriCaps would not be a bad choice as others have mentioned. They do have good clarity and are quite reasonable in cost.

When you do mod the 6, get rid of the cheap stock 18 ga. power cord. It looks sort of difficult to install an IEC on a 6 due to the way it's laid out near the transformer. This was a huge leap forward on my 9 and on the other ARC pre amps I have done it to for friends. Another thing to look into while you are at it, is high speed soft recovery Hexfreds to replace the power supply diodes. They aren't a real expensive part and should be much better sounding than the dirt cheap ones used by ARC. I have to assume that the power supply caps could be getting near the end of their serviceable life by now too. This could cost a bundle depending on which version of the 6 you have. Check out this link,
http://www.arcdb.ws./SP6/SP6.html
It might help you identify which version you own.

I would also look into a new volume control like one from Goldpoint or DACT. It looks like it might be easy to do on any version of the 6 if there is room for one. Ypu just need to check the clearance of the PC board under the current control. The carbon based pot that comes in the 6 isn't real accurate or low in coloration.

None of this should ruin the character of the pre amp, just improve on what it is capable of as far as clarity and resolution.
Good luck.
Keith

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Follow Ups Full Thread

Topic - Audio research SP6A cap upgardes? - croft 15:44:56 04/30/04 (11)

Re: Audio research SP6A cap upgardes? - Keith Lockwood 10:06:09 05/01/04 (3)

Re: Audio research SP6A cap upgardes? - croft 22:41:56 05/01/04 (0)

Sorry ,You did say it was a 6A. - Keith Lockwood 10:08:29 05/01/04 (1)

Re: Sorry ,You did say it was a 6A. - croft 22:44:32 05/01/04 (0)

Re: Audio research SP6A cap upgardes? - YUL 18:52:46 04/30/04 (6)

Re: Audio research SP6A cap upgardes? - croft 20:00:17 04/30/04 (5)

Check with ARC on parts availablilty.... - doodlebug 12:15:19 05/01/04 (3)

Re: Check with ARC on parts availablilty.... - croft 22:21:23 05/01/04 (2)

Re: Check with ARC on parts availablilty.... - Keith Lockwood 09:46:02 05/02/04 (0)

Not much for the nuances of caps.... - doodlebug 09:25:24 05/02/04 (0)

Re: Audio research SP6A cap upgardes? - YUL 20:39:57 04/30/04 (0)

Follow Ups

Re: Audio research SP6A cap upgardes? - Keith Lockwood 10:06:09 05/01/04 (3)

Re: Audio research SP6A cap upgardes? - croft 22:41:56 05/01/04 (0)

Sorry ,You did say it was a 6A. - Keith Lockwood 10:08:29 05/01/04 (1)

Re: Sorry ,You did say it was a 6A. - croft 22:44:32 05/01/04 (0)

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