Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 14th April 2012, 08:06 PM   #201
diyAudio Member
 
Join Date: Nov 2009
Location: Pune
yes I agree with Ashok, try to use rotatory encoders and circuit to control them. using motor driven pots are turning yesteryears story. these days rotatory encoders are replacing .

Roushan you reminded me of chor bazzar, I use to visit this place every friday when I was a student. I still remember over 200 gramaphone disks in brand new conditions were bought by me from chor bazzar (bhendi bazzar) for just 5Rs each.

I was the time when electronic ballast for florescent tube were newly introduced in indian market. The cost was really very high. I bought them at 10 rs each repaired them and used them at my home.
__________________
There is always a first time....
  Reply With Quote
Old 15th April 2012, 05:02 AM   #202
Roushon is offline Roushon  India
diyAudio Member
 
Join Date: Sep 2004
Location: Mumbai (Bombay)
Quote:
Originally Posted by ashok View Post
Roushon,
Usually motorised volume controls are not very easy to turn. You will find it rather stiff compared to non motorised controls. Digitally encoded volume controls are also fairly easy to turn.....
That is a very good point Ashok! Thanks! I will check. I have no idea about digital volume control or digitally encoded one (may be both of them are same)
or how they work. Will have a study about them on the net...

Regards
Roushon.
__________________
S. Roushon
  Reply With Quote
Old 15th April 2012, 05:14 AM   #203
Roushon is offline Roushon  India
diyAudio Member
 
Join Date: Sep 2004
Location: Mumbai (Bombay)
Quote:
Originally Posted by Aucosticraft View Post
yes I agree with Ashok, try to use rotatory encoders and circuit to control them. using motor driven pots are turning yesteryears story. these days rotatory encoders are replacing .

Roushan you reminded me of chor bazzar, I use to visit this place every friday when I was a student. I still remember over 200 gramaphone disks in brand new conditions were bought by me from chor bazzar (bhendi bazzar) for just 5Rs each.

I was the time when electronic ballast for florescent tube were newly introduced in indian market. The cost was really very high. I bought them at 10 rs each repaired them and used them at my home.
Need to study about rotary encoder, do not know about it as it is always
for me...was never a student in electronics...

You must be very lucky Aucosticraft! Although I am in Mumbai for over 21
years, did not (still do not) have time to pursue my hobby well. Came to know chor
bazaar very very late...thanks to diyaudio.com I could start my hobby without
knowing the subject or people with similar interest personally...

Yesterday got four Vinyls: Guide, best of Mukesh, Geet Gata Chal and
Prem Rog in Rs 350/-. One of them turned out to be scratched severely...

Regards
Roushon.
__________________
S. Roushon

Last edited by Roushon; 15th April 2012 at 05:16 AM.
  Reply With Quote
Old 15th April 2012, 05:32 AM   #204
Roushon is offline Roushon  India
diyAudio Member
 
Join Date: Sep 2004
Location: Mumbai (Bombay)
Thanks Viki! I had seen the list in ebay....will order through ebay if find no
other solution..

Regards
Roushon.
__________________
S. Roushon
  Reply With Quote
Old 15th April 2012, 04:52 PM   #205
diyAudio Member
 
ashok's Avatar
 
Join Date: Jun 2002
Location: 3RS
Remember to contact the seller before buying and ask for registered mail. That way it's recorded delivery and a very good chance it cannot get 'lost'. The price of the Pot is better than buying it in the open market !
You might be asked to pay a small amount extra for registered mail unless the seller ships everything by registered mail. Don't just rely on 'free shipping' !

A couple of DVD's were shipped to me by 'normal' mail and they never reached me even after 2 months ! I even paid for shipping !.So take some precautions !
__________________
AM
  Reply With Quote
Old 15th April 2012, 06:54 PM   #206
diyAudio Member
 
Join Date: Nov 2009
Location: Pune
Roushan, Beware about ebay. there is lot of crys about ebay.in. as well I had bad experience about my laptop speakers when i got them from ebay US.

Check the link

http://www.maxim-ic.com/datasheet/index.mvp/id/4065
http://www.maxim-ic.com/datasheet/index.mvp/id/5288
__________________
There is always a first time....

Last edited by Aucosticraft; 15th April 2012 at 06:57 PM.
  Reply With Quote
Old 16th April 2012, 05:25 AM   #207
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
Motorised pots invariably have an LED on the knob and stops like a normal pot at min and max positions.

A pot of good quality is always better sounding than any digital methods.

Gajanan Phadte

Last edited by gmphadte; 16th April 2012 at 05:29 AM. Reason: added content
  Reply With Quote
Old 16th April 2012, 12:41 PM   #208
diyAudio Member
 
ashok's Avatar
 
Join Date: Jun 2002
Location: 3RS
I wouldn't be too sure about the LED on the motorised pot's control knob. I have three amplifiers of different brands with motorised pots and no LED on them. But they do have a start and stop position unlike digital encoders.

Today modern switched volume controls on a chip are supposedly very good. Also used on many high end products. You'd have to do an A/B comparison to see if you can hear any degradation. I don't see too many complaints about them now. Their channel trackability is impeccable. However implementation does take a lot of extra parts.
__________________
AM

Last edited by ashok; 16th April 2012 at 12:45 PM.
  Reply With Quote
Old 16th April 2012, 05:13 PM   #209
Roushon is offline Roushon  India
diyAudio Member
 
Join Date: Sep 2004
Location: Mumbai (Bombay)
Default Thanks!

Thanks to all for the discussion. At present I have a 64 stage stepped (log)
attenuator controlling the amp. The main problem is the `transition noise'. It
is like tik, tik,...,TAK, tik... The TAK (31 to 32) is a bit too much, I need to
mute the amp while crossing this stage. This is the only reason why I need the
motorized volume pot. As I understand the IC based analogue volume controls
are a miniature version of the stepped attenuator, so the transition noise
(although minimized) will be there I think, specially when it is connected to a
high power amp.

I found a pot in the ebay and contacted the seller regarding registered post,
it is just USD 2 more, so I can order that if find no other source.

Thanks and regards
Roushon
__________________
S. Roushon
  Reply With Quote
Old 16th April 2012, 08:11 PM   #210
diyAudio Member
 
Join Date: Nov 2009
Location: Pune
Roushan It seems you are lucky this time . :

And what is the cost of Control? its shipping cost ?
__________________
There is always a first time....
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
[INDIA] Any DIYer made a Gainclone in India. willing to help? smarcher Chip Amps 63 2nd January 2014 11:07 AM
Parts availability in India ashok Parts 1 8th June 2011 05:49 PM
I am from Mumbai, India. rakeshln Introductions 2 10th June 2004 03:39 PM
DIY Audio parts sourcing for Live Sound Reinforcement in India peterpan73 Parts 0 19th February 2004 11:28 AM


New To Site? Need Help?

All times are GMT. The time now is 12:57 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2