Never try this at home boys and girls

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gerado

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Never try this at home boys and girls
« on: 17 Sep 2007, 06:54 am »
That's how silly I felt accidentally shorting the active speaker outputs of my LF 100 to earth on the week end.

By the time I noticed things were not quite normal there was smell, there was smoke and 3 of the 4 resistors near the fuses black beyond recognition with virtually a China syndrome through my PCB. Just a lump of charcoal where they formally rested which crumbled away to carbon dust.

Sunday afternoon ruined, I shot an email to Hugh fearing the worst. Without hesitation he invited me over  . Into the car and down the hill to Hugh's ever welcoming arms with 2 kids on toe I went. I could see from what he did not say what he was actually thinking .The damage looked bad but was probably worse with the output stages likely fried as well.

To my surprise (and Hugh's?) 3 small resistors , 2 fuses and the amp was back in action, amazingly no other damage (though my pride will take a lot longer to recover from such a stupid act)

Despite being exposed to such brutal abuse - essentially a straight wire across the output terminals going to earth for considerable time - this great amp survived with minimal damage and virtually no cost to repair.

This is one fine amp but it is one damn tough reliable one as well. Probably nothing to do with excellent design? :thumb: ha ha ha!

Above all I have to mention my gratitude to Hugh's welcoming approach and ever helpfull attitude.


But all was not pain.

I had a taste of the refined version of his new speakers and the Soraya while there.
Suffice to say I went away smiling :drool:
Its probably not that hard to get detail, smoothness and beautiful sound out of good modern well designed ups these days. But all day I have been thinking
about something else, something  special this combination did, something to do with the sound staging side to side and back and forward. Something holographic, or maybe I should no use that term as it  implies some degree of artificiality.  Something real may be a better term to describe what I heard and has lingered in my memory all day today.

I am not saying this is definitely the best sound there is, that is just a subjective judgement and rings allarm bells when I hear others make such claims, but there are some rare systems which are special  and then there is the rest.
One must at least listen to this combination if you are not afraid of getting on the upgrade path again, because you surely will! :lol:



andyr

Re: Never try this at home boys and girls
« Reply #1 on: 17 Sep 2007, 08:47 am »
That's how silly I felt accidentally shorting the active speaker outputs of my LF 100 to earth on the week end.

By the time I noticed things were not quite normal there was smell, there was smoke and 3 of the 4 resistors near the fuses black beyond recognition with virtually a China syndrome through my PCB. Just a lump of charcoal where they formally rested which crumbled away to carbon dust.


Tut, tut, Theo ... I've told ya before ... ya gotta stop fortifying yourself with a big glass of ouzo on ice, before you start playing with your hifi system!  :lol:

Just listening to music - no worries - but plugging things in and out!  :nono:   :nono:

Glad that it all got put back together again so quickly!  :D

Regards,

Andy

gerado

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Re: Never try this at home boys and girls
« Reply #2 on: 17 Sep 2007, 10:23 am »
I think the oozo was fine but the water was probably off :lol:


In some respects you are to blame Andy

I had just finished a nice box for it after you seeing my not so glamorous first attempt you criticized :oops:

andyr

Re: Never try this at home boys and girls
« Reply #3 on: 17 Sep 2007, 10:34 am »

In some respects you are to blame Andy.

I had just finished a nice box for it after you seeing my not so glamorous first attempt you criticized :oops:

Ah, sorry, my friend!  :D

In a coupla months you have to come round to see my new cases for my 3 LF amps and XO (1 case behind each Maggie) which will make Vicki very happy and should sound much better too ... so I'll be very happy as well!   :lol:

Regards,

Andy

gerado

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  • Posts: 123
Re: Never try this at home boys and girls
« Reply #4 on: 17 Sep 2007, 11:38 am »
will love to

Im constantly changing mine and has moved on since you last heard it.
have one more major change in the wings then will love to lend your ears again

T

AKSA

Re: Never try this at home boys and girls
« Reply #5 on: 17 Sep 2007, 12:27 pm »
Theo,

It was a pleasure, Sire, and I was as surprised as you......    :thumb:

Hugh

raptor

Re: Never try this at home boys and girls
« Reply #6 on: 18 Sep 2007, 12:15 am »
Theo,

It was a pleasure, Sire, and I was as surprised as you......    :thumb:

Hugh

Come on Hugh, aren't you going to come clean about Saturday afternoon? :lol:

AKSA

Re: Never try this at home boys and girls
« Reply #7 on: 18 Sep 2007, 12:23 am »
Ah, Neil,

Do you mean where I too shorted a Soraya power amp, smoke came out, and when I checked all the semiconductor junctions all was well and now it's back to full service with no ill effects.   :lol:

This is immensely satisfying, because years ago I took a firm decision NOT to use current or voltage limiting because even the best of them have bad sonic impact.  Better to design something tough than subject it to sonic manacles...... :nono:

Cheers,

Hugh

raptor

Re: Never try this at home boys and girls
« Reply #8 on: 18 Sep 2007, 12:53 am »
Ah, Neil,

Do you mean where I too shorted a Soraya power amp, smoke came out, and when I checked all the semiconductor junctions all was well and now it's back to full service with no ill effects.   :lol:

This is immensely satisfying, because years ago I took a firm decision NOT to use current or voltage limiting because even the best of them have bad sonic impact.  Better to design something tough than subject it to sonic manacles...... :nono:

Cheers,

Hugh

That's it exactly Hugh, there are very few amps that would still play after the shorting. I think the appropriate Oz phrase is "built like a brick s***house"  :D

gerado

  • Jr. Member
  • Posts: 123
Re: Never try this at home boys and girls
« Reply #9 on: 18 Sep 2007, 01:19 am »
second that.

but plays like??.......

(suggestions invited )  aa

AKSA

Re: Never try this at home boys and girls
« Reply #10 on: 18 Sep 2007, 01:56 am »
The Sydney Opera House???    aa

Hugh

LM

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  • Lyn
Re: Never try this at home boys and girls
« Reply #11 on: 18 Sep 2007, 02:57 am »
......a Stradivarius?