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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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I'm planning on building a Risch filter or two in the next month or so. A couple questions:A) using a friend's borrowed Blue Circle balanced transformer once, I learned (as others have) that while the front-end stuff sounded great plugged into it, the amps sounded dull/dark. At some point I want to build a balanced power supply, but for front-end only. However, I have wondered about a Risch filter (with four instead of two inductors) for my amps. Does the Risch filter kill amp dynamics or make them sound dark, or do they not kill 'em (like the Ulitmate Outlet, supposed to be amp friendly.)
B) if the Risch filter works well for amps, I need to know how much wattage I can take from it (with four inductors.) Here is my scenario:
A) one duplex outlet feeds the system. One socket will be source only: tube preamp (40 watts or so though may build a seperate tube line and phono stage, so that may go to 80s watts), SACD player (38 watts) and electrostatic panels (5 watts each = 10 watts.) Turntable is battery powered, so it's home free. These components will be fed by one Risch filter (and, later, balanced power as well.)
B) the second outlet on the duplex will feed my Innersound crossover amp (currently 200 watts/channel at 4 ohms, but may switch to the current version, which is 300 at 8 ohms/600 at 4 ohms per channel.) Then the amp(s) for the ESl panels: switching off between a Music Reference RM9 (draws about 500 watts) or a monoblock pair of Monarchy SM70 Pros (not sure of current draw, but amps are Class A, 80 watts at 8 ohms, 120 at 4 ohms.) I don't listen that loud, but still there is a bit of power there. Would this be too much for the Risch Filter with 4 inductors? Or should I, say, place the Innersound amp on the Risch filter with the source components (adding two inductors for high current.) I would prefer to keep the amps seperate from the source components. Also, will have an isolation transformer on the SACD player.
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Topic - Jon Risch and others: power handling abilities of a Risch filter with four inductors. - mark maloof 23:44:13 12/14/04 (12)
- Re: Jon Risch and others: power handling abilities of a Risch filter with four inductors. - CD 13:48:54 12/17/04 (0)
- Re: Jon Risch and others: power handling abilities of a Risch filter with four inductors. - Richard Parker 06:38:51 12/17/04 (0)
- Re: Jon Risch and others: power handling abilities of a Risch filter with four inductors. - Jon Risch 20:49:11 12/15/04 (0)
- Thanks Bob and Al. Here is what I will most likely do...(and Bob or others, need advice on AC caps) - mark maloof 18:31:14 12/15/04 (6)
- Re: Thanks Bob and Al. Here is what I will most likely do...(and Bob or others, need advice on AC caps) - BobM 10:22:50 12/16/04 (0)
- Clarification: nothing in *series* with InnerSound amp. - Al Sekela 09:37:59 12/16/04 (3)
- Second this tweak, and placement issues - bartc 05:42:15 12/17/04 (0)
- What brand of silver mica caps, and where did you find them? Also, a cap for the duplex that feeds the system? - mark maloof 17:50:34 12/16/04 (1)
- CDE from Hosfelt Electronics - Al Sekela 14:01:34 12/17/04 (0)
- Ah, but what about the PS audio Ulitmate Outlet? - mark maloof 18:35:58 12/15/04 (0)
- Re: Jon Risch and others: power handling abilities of a Risch filter with four inductors. - BobM 10:37:52 12/15/04 (0)
- Avoid anything in series with AC to InnerSound amp. - Al Sekela 09:36:59 12/15/04 (0)
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