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Old 18th July 2008, 01:21 PM   #521
tcpip is offline tcpip  India
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Where are you based, ssmith? Delhi?
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Old 18th July 2008, 01:33 PM   #522
ssmith is offline ssmith  France
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yep, in Delhi, just for the last couple of years and a year or so more -- think you far better off for parts down in Mumbai...
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Old 19th July 2008, 04:28 AM   #523
navin is offline navin  India
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Default Re: Visited Delta Transformers

Quote:
Originally posted by tcpip
Visited their factory at Kirti Nagar Industrial Area, Delhi.

The R-core transformer I got is the first R-core I've ever seen from up close. I paid almost Rs.4K for the 270VA thing.

Heard about one development which we need to keep away from. There's now heavy-gauge wire which is Al core with Cu jacket. This means that even if you scrape off a few microns from the surface, you will not be able to detect that it's actually Al wire. It'll look like Cu because there's Cu on the surface. But the core is Al.

And an interesting note on the differences between Cu and Al for wiring, here:
http://www.dotznize.com/electric/?a=al
Apparently, a lot of transformer makers are silently switching pure copper wire with this, so that they make their buck. You wouldn't even know, unless you're experienced enough to notice the drop in weight.
Oh so the guys at Kirti Nagar are called Delta. Some 12-14 years ago a friend of mine got me 2 1200VA R-core transformers from them. Excellent stuff. I used them in a pair of (mono) subwoofer amps.
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Old 19th July 2008, 04:40 AM   #524
tcpip is offline tcpip  India
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Quote:
Originally posted by ssmith
yep, in Delhi, just for the last couple of years and a year or so more -- think you far better off for parts down in Mumbai...
You should hook up with Angshu, a Delhi and diyaudio veteran, and maybe with Viren Baxi of Lyrita Audio. He too is a diyer at heart, he says. I am sure they'll be able to add pointers to your database about sourcing parts.

But I tend to agree... the Delhi retailer does not seem to like retail customers, however paradoxical it may sound. On the other hand, there are these manufacturers like Delta who are inexplicably quite supportive of retail individuals.
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Old 19th July 2008, 05:06 AM   #525
navin is offline navin  India
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Quote:
Originally posted by tcpip

Viren Baxi of Lyrita Audio.
It's Viren Bakshi. I think. :-)
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Old 19th July 2008, 06:11 AM   #526
tcpip is offline tcpip  India
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Quote:
Originally posted by navin
It's Viren Bakshi. I think. :-)
Of course, if you say so.

How is our friend Uncle Harry doing? Do you see him sometimes? It's time I started harassing him for some good knobs now. Am walking down the amp-building path...
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Old 19th July 2008, 06:30 AM   #527
gjo is offline gjo  India
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Default Interesting thread

Coming back to this thread after four years is quite interesting..During that period, I have met up with TCPIP and Angsu, as well as Corbato, ashok and sunil.

ssmith, I have three valve amps, (2A3 Class A as well as EL 34 pp), and I can assure you that once you start listening to them you will not go back to ss. Good luck in your endeavours. As navin said-this is an expensive hobby!
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Old 19th July 2008, 06:56 AM   #528
tcpip is offline tcpip  India
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Default Re: Interesting thread

Quote:
Originally posted by gjo
Coming back to this thread after four years is quite interesting..During that period, I have met up with TCPIP and Angsu, as well as Corbato, ashok and sunil.
Yes... I re-read my own notes here and I am taken back to my first meeting with Dinrack and Uncle Harry and all those days. It's almost become a shared journal, this thread.

Quote:
... and I can assure you that once you start listening to them you will not go back to ss.
Shameless turncoat traitor... and to think of all the bread we've broken together and wine we've soaked ourselves in.
Somehow, I've yet to hear this life-changing valve experience. My first serious valve listening session was a full evening at a friend's place in California, with all the silence and relaxation I could hope for. His equipment cost $30,000, and included Balanced Audio Technology all-valve electronics (CD player, preamp, monoblock power amps) and Dunlavy six-feet-tall speakers. Even that didn't convert me, though I liked the music very much. I guess there's better valve equipment, but I hardly get to see such stuff. Since then, I've listened to a Cadence VA 1.0 valve amp and electrostatic-hybrid speakers, but even that left me unfazed. Too little bite, in my humble opinion.
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Old 21st July 2008, 04:18 AM   #529
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Default Re: Re: Interesting thread

Quote:
Originally posted by tcpip
How is our friend Uncle Harry doing? Do you see him sometimes? ..
Uncle Harry might be retiring. What with what rent could fetch him, I dont blame him. So get what you can now.


Quote:
Originally posted by gjo As navin said-this is an expensive hobby! [/B]
Quote:
Originally posted by tcpip

Shameless turncoat traitor... and to think of all the bread we've broken together and wine we've soaked ourselves in.
Guys if you are looking for the holy grail, trust me it does not exist. It can be very maddening to know this but I have realised that becuase of the various recording techniques and geners I listen to no one speaker is going to satisfy me leave alone give me goosebumps on all my music.

Big speakers (using 15"-21" woofers) are great for big orchestral music but are low on WAF (especially in a small apartment), fullranges like the JX92, Fostex, Supravox, etc.. ar superb for vocals and Acapella but fall apart on AC/DC and Metallica, why they fall apart on ABBA too.

Same with amplification. SS and tubes have their advantages and sometimes mixing the 2 brings out the worst in them. For example I have heard a SS bass mated to a tube top end and it sounded funny.

In the end I think we might first have to determine the transfer function of our rooms, our lstening position in the room and the postiion of our speakers before starting a speaker/amp design. For example, if the room has a a boost of 6db at 35Hz then a speaker that is flat to 30Hz will sound bass heavy.

So first understand your room. Then start a design. As far as getting parts in India is concerned it is going to a long wait. THe DIY market is really quite small.
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Old 21st July 2008, 03:16 PM   #530
Vivek is offline Vivek  India
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Hi guys,
Any new discoveries on the availability of good drivers in India? I feel like building a pair of speakers again. I also intend to try the symasym amp for two channel music. My sub amp plans are still pending.

Vivek
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