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Old 16th March 2013, 02:54 PM   #8671
a.wayne is offline a.wayne  United States
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Yes and it was not their F1 engine , while the original was based on the street car , by the time they exceeded 600 bhp , it was all purpose built engines and had nothing To do with the street car, BMW included ..
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Old 16th March 2013, 02:56 PM   #8672
a.wayne is offline a.wayne  United States
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Back to my original question Gents ...

Quote:
Originally Posted by a.wayne View Post
Questions for suggestions Gents ...

I want to upgrade the PSU caps in a PS-Audio amp i'm currently using, it currently using 12,000ufx4 in the psu, my options are ,

Leave whats there currently and add an addition external cap bank of 4 x68,000uf..

or

Remove current caps and install the 68K in it's place on the copper rails and remote the transformer to a separate chassis ...


Thoughts ...?
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Old 16th March 2013, 03:18 PM   #8673
dvv is offline dvv  Serbia
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Quote:
Originally Posted by a.wayne View Post
I had idler tables before, Garrard (3 types) and 1 Lenco and i really dont get it about lenco's today , they were all bettered by the LP-12 in the 70's so where is this sudden sonic surge coming from ...

Let me remind you tht a truntable, ANY turntable, is a wasteland of variables, which most defiitely include the cartridge used. It's a very complex electro-mechanical system, which needs much care to set up properly. Very few I've seen in my life which were well set up all around, and hardly surprisingly, they offered good rewards.

The fact that siomeone might own what is generally accepted to be an excellent turntable does NOT guarantee top class results all on its own. I have seen and heard reasonably priced TTs outperform much more expensive counterparts simply because their owner took the time and trouble to do what needs to be done, while the owner of the expensive item just stuck it on with no further ado.

For a start, how many TT owners made sure their TT was REALLY level, using a simple watermark? If it isn't, the skating can't do its job properly. And so forth.

How many use a cartridge which is currently "in", rather than making sure the tonearm they have can accommodate properly that cartridge? And if not, then finding a cartridge which can?

Yes, TTs were messy, demanding, cruel masters, but if set up properly with an appropriate cartridge, they could thrill one indeed.
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Old 16th March 2013, 03:27 PM   #8674
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Nige, I think it was called Dauphin. The Renault, I mean.
Dauville ( the town ) was the factory I think ? The Dauphin , I remember those . A princess or a fishy mammal ?

Hope people got my drift . Torque of turntables matters ( it's 1 ohm again , only the stylus is the unsuspected load ) . Ideally from a motor with no cogging . Lenco has a good motor .

One of my favourite films ever ( and singer ) . This car is a Lenco .
Two-Lane Blacktop (1971) - YouTube
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Old 16th March 2013, 03:33 PM   #8675
dvv is offline dvv  Serbia
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Not sure, but as far as I can remember, only Italy's De Tomaso had a big saloon called "Dauville".
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Old 16th March 2013, 03:50 PM   #8676
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I noticed that . He was an Argentine gentlemen . That meant no cars for Britain after the war ? He was involved with motorcycles I think ? Benelli ?

I probably got the name from a journalist . after reading what I have said in print one should have doubt . I apparently said " CD is ideal to hum to whilst vacuum cleaning " , it's great and far better than I could say . David Price insists I said it .
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Old 16th March 2013, 03:56 PM   #8677
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Here is a warning for those who doubt the need for thick copper ( no one does I know ) . I have a 1 ohm resistor soldered into a 12 - 0 - 12 6VA running at 4 VA . The resistor for current measuring and a sort of fuse ( 1/8 watt ) . Having soldered in a 0.8 mm shorting wire I still get 0.03 V ! That's a lot for a wire that can carry 10 A . Not wrong , just a wake up call . 0.2A is not much of a load .
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Old 16th March 2013, 04:00 PM   #8678
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Quote:
Originally Posted by a.wayne View Post
Back to my original question Gents ...
I want to upgrade the PSU caps in a PS-Audio amp i'm currently using, it currently using 12,000ufx4 in the psu, my options are ,
Leave whats there currently and add an addition external cap bank of 4 x68,000uf..
or
Remove current caps and install the 68K in it's place on the copper rails and remote the transformer to a separate chassis ...
Thoughts ...?


Maybe if you separate the trasfo there will be less "magnetic" interferences with circuits ?
The caps should be kept very close to the output transistors I think
Some commercial amps are built this way
Interesting question ... I would like to hear me too an expert advice
Kind regards,
gino

Last edited by ginetto61; 16th March 2013 at 04:03 PM.
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Old 16th March 2013, 10:44 PM   #8679
a.wayne is offline a.wayne  United States
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Originally Posted by nigel pearson View Post
Here is a warning for those who doubt the need for thick copper ( no one does I know ) . I have a 1 ohm resistor soldered into a 12 - 0 - 12 6VA running at 4 VA . The resistor for current measuring and a sort of fuse ( 1/8 watt ) . Having soldered in a 0.8 mm shorting wire I still get 0.03 V ! That's a lot for a wire that can carry 10 A . Not wrong , just a wake up call . 0.2A is not much of a load .
you telling me , Mr 10 amp nominal ....

Quote:
Originally Posted by ginetto61 View Post

Maybe if you separate the trasfo there will be less "magnetic" interferences with circuits ?
The caps should be kept very close to the output transistors I think
Some commercial amps are built this way
Interesting question ... I would like to hear me too an expert advice
Kind regards,
gino
Capacitors are mounted directly to copper bars feeding the outputs .....this PS audio punches way pass it's weight class, very much a sleeper, picking up 2 more ...
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Old 17th March 2013, 12:02 AM   #8680
fas42 is online now fas42  Australia
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Quote:
Originally Posted by a.wayne View Post
I want to upgrade the PSU caps in a PS-Audio amp i'm currently using, it currently using 12,000ufx4 in the psu, my options are ,

Leave whats there currently and add an addition external cap bank of 4 x68,000uf..

or

Remove current caps and install the 68K in it's place on the copper rails and remote the transformer to a separate chassis ...
Remoting the trafo is good, along with a few beefy caps to minimise voltage sag. Not quite sure whether you're talking 68K, or 4 of 68K ...?

Locally, lots and lots of small, say 1,200uF, radials, to make up that 68K, soldered to the copper rails in bunches as close as you possibly can get to the output devices.

Frank
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