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Old 13th August 2012, 05:19 PM   #6721
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I have a crappy RPM4 and goldring Elitte
The TT will have to go soon but, how much screaming can I take when she see new one aplies so lets say I am working on it.

Possession is not realy my thing and I make up for it whit other things....
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Old 13th August 2012, 05:27 PM   #6722
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well RPM 4 with its tonearm is not bad.
This specific TT has been considered a giant killer and has a very good Performance/Cost Ratio.

The pick up is not bad either. If I were you I would consider a different cartridge perhaps more refined without spending too much money.
I have a good suggestion in this regard: get a Mida Denon with ES tip modification.
You will have a killer cart for its money.

If you want more details just drop me an email.
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Old 13th August 2012, 06:07 PM   #6723
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Default Transient response with slow passive filter

Quote:
Originally Posted by Joachim Gerhard View Post
Passive RC filtering has its merits. One is very good transient response or should i say slow response.
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No, passive filtering is slow. Thats the name of the gave.
I need a lesson obviously.... So slow filter implies good transient response... How come ?

I was convinced we needed a fast power delivery from the psu (or cap in the filter) to cope with fast rising impulses...
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Old 13th August 2012, 08:33 PM   #6724
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The storage in the cap can supply fast but it is more like a water tank that should never go empty. An active shunt is somewhat different because the low output impedance is based on the electronic circuit, be it feedback, feedforward, open loop or all together. That is also the reason that a shunt regulator can go into oscillation if it supplies a heavy load or has too low phase margin. Under that condition i would call the transient response poor. That can not happen with a passive RC filter if it is generous designed. The output impedance of the passive RC filter is of cause limited by the ESR of the cap and detoriates at very high frequencies where the cap gets inductive. That is the reason the cap value should be high ( electrolytics with high values and high voltage usually have low ESR ) and ideally decoupled with an optimum dimensioned film cap bypass.
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Old 13th August 2012, 08:36 PM   #6725
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Sampler has some time ago argued in favor of passive RC that came closer to the batterie supply in sound. I can only tell you that the Paradise R2 sounds really fine so the PSU does its job well. Frans solution seems to be very tolerant concerning loading.
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Old 13th August 2012, 09:24 PM   #6726
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Having some experience with that shunt topology, the resistors of the RC cells won't let the reg's output see oddities so its safe as a system.
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Old 13th August 2012, 09:25 PM   #6727
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Quote:
Originally Posted by Joachim Gerhard View Post
Sampler has some time ago argued in favor of passive RC that came closer to the batterie supply in sound. I can only tell you that the Paradise R2 sounds really fine so the PSU does its job well. Frans solution seems to be very tolerant concerning loading.
What I like the best is battery powered followed by a well designed shunt.

I tried battery alone, battery with some RC filter, but didn't sound as good.
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Old 13th August 2012, 09:27 PM   #6728
RCruz is offline RCruz  Switzerland
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Now I understand your stating.

I am using a 2200u Pana FC // 470u BG std. Hoping the Pana provides enough low ESR and the BG leaves it's wondefull sonic signature over it.
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Old 13th August 2012, 09:27 PM   #6729
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*The cells impose their own impedance curves as what the circuits see non the less, thus the reg's other characteristics are not dominant anyway.
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Old 13th August 2012, 09:30 PM   #6730
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*The cells impose their own impedance curves as what the circuits see non the less, thus the reg's other characteristics are not dominant anyway.
was that a comment to my post?
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