Roopesh

Looking forward to the circuits and pictures of the insides of your impressive unit.

A few questions that have me stumped:

1. What are T1 and T2 for? 2. Where are the analogue inputs? Can't see them in any of your pics. Missed them? 3. Some more info on the card reader with remote, please.  4. How does one figure out what's on the "card" and select the tracks? 5. What does TC Reverse actually do? 6. What is "pulse out"?


Thanks in advance.

Kalyan.. its true.. and still using good hand wound transformers, myself.. for audio applications..
Sushil sir, at present, i am working this unit on card reader.. so, for a tidy appearence, i binded all needed cables inside the cabinet.. and can take out when in need.. but at present, we are not in a need to feed the unit from an auxilary source, like Phono disc player, DVD player, or channel mixer.. but the entire unit is based on a simple digital card reader, as liberally used in car players..
here T1 and T2 denotes additional tracks, along with externally connectable high watt rated speakers..  this additional track settings gives us a little deep streach in audio out, as i wired the both inside speakers with reverse direction.. as it is small compared to the big, connected, the phase shit will not affect badly, in harmony with total output.. and here my ambition is to hear the music in a lively volume level, that comfort to us.. the total main volume is controlled by the remote controller, as left and right, with card reader.. an additional main volume is provided for easy control..
TC reverse, provided here, to revesre the left and right tracks, to the main big speakers, while use in a karaoke system.. the sub small speaker is driven by TDA 2005 each.. while bigs are by TDA 2009.. one of the main feature of these ICs are the good quality output, especially when we choose appropriate capacitors..

here i am taking out, the in cables...

Sir, we can feed to anything.. from a simple walkman, CD player.. DVD player.. Palm top for videos.. and PC.. or lap anything.. even phonodiscs.. as my phono drive employs the scratch anf rumble filters in it, i avoided adding the filters inside the amp.. working dramatically.. the depth and feel of running sound is achieved by some careful control adjustments after placing the unit in desired place.. when configured, i adjust the main volume by remote controller..

the card reader is based on a simple card reader, that can purchased from any electronics shop at present.. an audio card costs about 140 Rs/- while a video card costs about 400/-Rs.. this unit will be sold with it's own remote controller.. include 100 % functions like power on also.. track change, with number selection, reads MP3 and Audio, mute, play/pause, rewind and ffwd, parametric electronic equalizer, 6 preset equalizers, loop, repeat, favourite, and with PLL FM tuner.. nice addition.. will add one by one.. Sir, this is my humble efforts.. but got a dramatic performance, that to a music lover.. it is not possible to explain anyway.. with known words.. because music goes on.. and on.. and on..

the pulse out, was taken out to feed the oscilloscope for signal referance.. but soon i realized, present softwares need not it, as it can dot all itself.. so i changed it in to controlled electro stimulation, pulse, that we can choose the pulse from any audio source, as pulsed or continuos.. can feed with electronic key board, for a constant audio pulse, or can go for various by programming the key board, and the pulse amplified by a step up transformer inside, while using with 12 volt battery for powering, and gives me a good relief in my back pain issues.. and freezing lug..
will add the used circuits, card reader, power circuits.. and all with wave guides.. 

Roopesh

I think it is time you came clean on your fraudulent claims. You have gone through this before, apologised, but are back to your old ways. You DO have talent. Nurture it. Give up on the - unnecessary, in my opinion - BS.

Please do not miscontrue this any kind of threat. But there is much too much evidence to shoot your claims to smithereens. Would you like it made public?

Its your call.

This post is repeated in another thread, which is of direct concern to my field.

Sir, my works are simple and humble, and to me, these efforts are heavenly, and i know my efforts are humble, and not claims my works are ultimate.. but still i will continue my works, as my life is for it.. 

can also add the turn table.. this turn table employs all filters inside, and need not any scratch or rumble filters in power amp..  and i have ample of SP and LP discs with me.. this adds more liveness in music listening..

circuits follows..

here is the basic power supply.. and do not have any printed matter.. all electrolytic capacitors are 4700 MFD.. all diodes are 6 amps.. and also need a fan for cooling the transistor..

This is the first of several posts .

"Copy-paste" quotes are from the original posts with my obsevations/comments. People can draw their own conclusions.

QuoteListening the music to us was a great aspect around 90s and 2000 s.. after that we saw an immense growth in subwoofer systems.. all we then started to wander behind it.. interested people sported to buy various innovations in it.. while ignoring many facts about it.. even today many of my Friends are not aware about the phrasings of sub woofer systems.. a 5.1 and 5+1 are differ.. in 5.1, we will get one tweeter, one speeker, and half subwoofer for each side..so, X2 is 5.. simple conversion of ordinary stereo system.. but in 5+1, we will get one tweeter, one full range, half mid range and half subwoofer.. and in to two.. more exciting while properly placed.. but a true system is 7+1.. great.. but all these are coming with a single subwoofer..

It is not only your Friends (sic) but yourself also, who are unaware.

1.   There is no such thing as a “half subwoofer” – or half speaker of any kind. How on earth could you get half a unit anyway? Half a 46 engine for a 25 size plane, anyone?

2.   A 5.1 system is for surround sound (primarily for movies). The “5” refers to the Front Left, Center, Front Right, Rear Left and Rear Right loudspeakers. The movie soundtrack is encoded with the surround information which is recovered in the AV processor and routed to the respective channels. Five, discreet, signals are therefore available to recreate the placement of the sounds. These speakers may be with small or large drivers. It is NOT 2.5 x 2! The “.1” refers to the subwoofer. This channel – sometimes referred to as LFE - low frequency effects) – reproduces signals (usually) only below 75Hz.

3.   There is also 7.1 decoding which adds two speakers to the rear. Only for use if your room is rather long. Never heard of a 5+1 or 7+1 system. Do educate me on this. Ever willing to learn.

Quoteat 15.5  volts and 5 amps it is a roaring lion.. three ICs are same, as two drives the left and right while the thirdth one drives the ambience speaker.. live depth.. all the while

A quick look at the TDA 2009 data sheet specifies an output of a little over 2.5 watts into an 8 ohm load at the specified voltage. With so little output available, the lion would get laryngitis and his roar would be reduced to a whisper!

Quote.. main feature of this unit is individual graphic manual equalizers.. an unmatched quality in listening.. no electronic mess..

Do check out amplifiers used for quality audio reproduction. They are invariably WITHOUT equalizers or tone controls of any kind in order to AVOID “electronic” or other “mess”!


 

Sushil Sir, a million thanks for the guidance and corrections.. i have a lots to learn from you.. 

Sorry to disagree. I and posibly millions of other music lovers insist on good quality graphic equalizers. Try listening to a flat non equalized piece of music in a tiled floor, concrete walled room with no curtains and steel framed furniture. Then listen to the same music in a room with heavily carpeted floor, with heavy well padded furniture and equally heavy curtains. The frequencies lost and absorbed in one room will reverberate in the other.

Now introduce the good quality graphic equalizer or even a bass, mid and treble control in the amplifier. The difference in both rooms is astounding. Boosting lost lower frequencies and cutting higher over shadowing frequencies will allow the music to be tailor made to anyone's ears. Plus, what is good for a 16 year old will be sadly lacking to a 66 year old listener.

I have had much to do with setting up venues for amplified music and vocal use. Early in the evening many frequencies are overpowering and require cutting or attenuating. Later in the evening when the venue is full of people those frequencies which were cut earlier now require boosting while other frequencies require drastic cutting. A simple change of venue and everything is changed. personally I much prefer the old 70s type amplifiers compared with the plastic inneficient systems of today. I refer of course to the average HiFi systems available to the masses not the over hyped so called audiophile systems costing 3 years wages to own. I assisted with the hit musical Jesus Christ Superstar in my younger days and in my opinion the audience was treated to a wonderful never to be forgotten musical experience. Without said graphic equalizers the same experience would be sadly lacking and extremely forgettable. Up to 50 people on stage at one time and everyone had their own microphone and seperate channel with seperate channels for each and every instrument in the orchestra. Three 48 channel mixers, 144 channels with their own full range equalizer.

Today I have 16 terrabytes of flat unreworked audio files. but on release from their hard drive each and every frequency is analysed and if need be boosted or cut to suit. Now when using headphones it's an entirely different ballgame.

Kindest regards  Stuart

PS: when it comes to music I'm not sure if I become part of the music or it becomes part of me.

I can agree only partly with your comments.

You have been primarily associated with PA equipment (of very high quality, I am sure). The requirements are quite different to a high quality home audio system. Many call it a purist approach and in many ways it is.

You have given the example of  "Try listening to a flat non equalized piece of music in a tiled floor, concrete walled room with no curtains and steel framed furniture" and then comparing the change after equalisation. That is very much like saying that an SUV is essential just because it can go on dirt roads and over many obstacles! Yes, try doing that with a Ferrari. It won't happen. So, by your logic, an SUV is the better of the two!

As for your comment on "16 years vs 66", I would just like to tell you that my hearing was last tested a year ago and was adequate right upto the highest frequency measurable on the audiometer.

To most youngsters, MP3 sounds great. To many digits are digits and there cannot be a difference between  players. Ergo, a DVD player should sound as good as a high end, dedicated CD player. Am always ready to demonstrate that this ain't so.

And I do not, ever, feel the need to "analyse every frequency". I listen to music with my ears and not an oscilloscope. A good ear can - and does - hear differences that are often unmeasurable.

Finally, my comment on high quality HOME systems not having tone controls stands absolute. May be the designers of all that stuff and myself are all crazy. And then again, maybe not. Depends on ones point of view, I guess.


 

to me "Music is what Music does" like Rasul Pookutty said on receiving Oscar, silence is as important as the music and  both are important part of listening and am happy to be part of a place which gave this world the primordial and all reverberating "OM"

Stu

Here is about Sushil

http://www.rcindia.org/chatter-zone/sushil-anand-an-authority-on-audio-audio-system/

http://www.rcindia.org/rc-people/sushil-anand-from-mumbai/

Sushil

Stu and you are born around the same time, similar sense of humour (You know what i mean) he is a nam veteran and an ace aeromodellor,

Quote from: roopeshkrishna on June 05, 2012, 01:27:09 PM
Sushil Sir, a million thanks for the guidance and corrections.. i have a lots to learn from you.. 

Fortunately then, there is much more to come.

@ roopeshkrishna   : :....

Quote from: roopeshkrishna on May 28, 2012, 09:12:55 PM
        a 5.1 and 5+1 are differ.. in 5.1, we will get one tweeter, one speeker, and half subwoofer for each side..so, X2 is 5.. simple conversion of ordinary stereo system..

@sunil sir......  

i have a confusion on 2.5 way speaker system...... Avant 906i & my Yamaha NS-50F is referred as 2.5 way, when there is 1 tweeter & 2 woofers.........

After reading your response I will  bow out and run away. I've always found this to be the safest course of action when confronted with a self proclaimed "purist"

A conversation is impossible with one who is always right and allows no leeway in any matter. The LAW written many decades ago stating "There shall be no tone controls and it was so" was decided by someone using an amplifier with over generous bass, mid-range and treble controls. The electronics of the day simply wouldn't allow specific frequencies to be adjusted, it was all or none. Unlike today when an exact frequency can be be picked out and boosted or cut to make allowances for imperfectly shaped rooms with imperfectly sited speakers. Your amusing attempt to compare my comments with an SUV or Ferrari was a typical ploy used when a question is is placed in the too hard basket. Purists are simply people who have been brainwashed into thinking everything associated with musiuc happens in a perfect world. Once speakers are inserted into the equation perfection goes out the window. Unless the room where the speakers are situated is acoustically dead with no reflective surfaces, perfection is impossible to achieve.

Apart from "There shall be no tone controls" the next biggest con perpetrated by so called audiophiles was the "Oxygen free cables" Tests have been carried out on the audio elite and not one of them could reliably pick the difference between the great unwashed type speaker cables and their holy grail of perfection in wiring. But I might add not one of them would admit that their wire was no better than the substitute, some 40 times cheaper.

That is why I have no wish to attempt a reasonable conversation. By experience there is no such thing  It's very similar to this little guy. It's like bashing your head against a wall, it's good when you stop. This good sir is where I stop.

Although admitting to being one of the "unwashed" in this area
I am quite enjoying this exchange.

Its refreshing to see actual knowledge on display.

Myself ?  .... I listen to hindi songs on my mobile.

My hobby into electronics was primarily with a stepping stone of designing and making good hifi audio system,   baffles for the speakers and perfect splitting for 2/3/4  way speakers with RMS of just 20 per channel and when 50 per channel was considered out of the world when available electronics and tech know how was not there for graphic eqilisations when sound was not recorded in surround formats with multichannels.

They were some good hifi sytems with not much complicated gizmos and simple tone and bass controls which produced good faithfull music. Grown up listening to such beautiful systems.

Today advances in electronics is making it possible and within reach possibility of having a system with everything possible in it to manuplate sound boost/buck/cut any frequency. Produce artificial surround environment with music not recorded in surround format, simulate effects of music being listened to in different environment and much much more.

Today we are in a world where it is possible and  where we are fed everyday to believe that it is absolutely essential to buy everything from phone, computer, tv, car even refrigerator to have everything in it and we also want it. We want our refrigerator to remember things for us and play music for me while I cook.

But to say that it is absolutely essential to have everything in your music system to have a good hifi music experience is sic.

Wonder why a simple Boss wave guide sounds so good.

Sushil Sir  to you. Eagerly waiting for some more pearls of wisdom on music systems

Quote from: Propfella on June 06, 2012, 01:08:58 AM
After reading your response I will  bow out and run away. I've always found this to be the safest course of action when confronted with a self proclaimed "purist"

Strangely, your post could well apply in reverse! I think I clearly expressed the fact that the requirements for PA (your field) and High end home audio are VERY different. That has not registered, despite fairly decent  English being used. So  '' who is always right and allows no leeway"?

I repeat. It is NOT possible to put the two in the same " hard" or otherwise basket. And, therefore, how does the analogy (Ferrari-vs SUV) become " a ploy"?

Who is being rigid in not accepting a "purist's" viewpoint just because it does not "fit in" with yours?

And, for the life of me, I cannot understand why that seems to have upset you so much.

Must be the Fosters. It does that to me more than occasionally!

And, if you wan't me to react your style. I'll say "Jesus Christ!" to the "Superstar".

Quote from: ravi18 on June 05, 2012, 11:52:16 PM
i have a confusion on 2.5 way speaker system...... Avant 906i & my Yamaha NS-50F is referred as 2.5 way, when there is 1 tweeter & 2 woofers.........

A "3 way" system would consist of a woofer, mid range, and tweeter, each handling their own assigned frequencies. Obviously, 3 speakers are mandatory. In a 2.5 way system, there will still be 3 speakers. Two units work in tandem for the low frequencies and "hand over" the mid frequencies to just one of them. Hence the "2.5" nomenclature.

Hope this answers your question. Feel free to ask for any additional info/clarification you need.

Wealth of info for anyone wanting to learn about audio systems. Two champions sparring and  sharing views. It's not what you see, it's what you want to see. I don't know about the others, but I am learning - a lot.

Stuart, welcome to the forum and welcome to India. We argue and some see the doughnut some see the vada (http://en.wikipedia.org/wiki/Vada_%28food%29). That's the way we are in India. Since you are a Nam Vet, you earn my respect. Not for what you did or didn't do there. You earn my respect for being a part of a legendary time/ era when I was just about born.

'Don't bow, don't run and don't stop' sharing as far as Nam/Aeromodelling/Experiences/Audio are concerned, we have so much to learn from you.

Personally, I don't give a damn about the modern 'PMPO' rated systems. I bought an Indian Sonodyne system, 21 years ago, with wooden/composite speaker casings and it still renders 'perfect' notes for my uninitiated ears. My Aiwa system (with Remote Control  ), bought a few years ago, is languishing in the junk heap. 2400 W PMPO, anybody want it? I may not sell it at your price, but then, I'm an old timer.

Stay, both of you geniuses, we NEED you. Enrich us. PLEASE.

Sushil Sir, sink it.  You don't need to prove anything to the world. Sink it.

Regards,

VC

VC

The first salvo - and that too not across the bows but broadside - was not my doing. But I agree with you. Sunk in toto.

PMPO, Megapixels, million to one contrast ratios in flat panel TVs. These are the numbers game for the masses who are gullible enough to fall for it. How many know that the small sensors used in most of these cameras would give you far superior pictures in low light, and yet be just as good in normal light, with a lower pixel count? Ask any TV manufacturer to give a grey scale range (would at best go to maybe 2000+:1) and you would - for obvious reasons - get a studied silence.

And a side bet, with 2:1 odds, on whether the AIWA has an equaliser or not!

Quote from: saikat on June 06, 2012, 05:41:51 AM

Myself ?  .... I listen to hindi songs on my mobile.

And why not? I have a high quality system at home but am content with an iPod while on my walks and even in the car. Though I admit to transferring as uncompressed files since there is so much storage space now available. For me quality reproduction is a means to an end - which is to enjoy music - and not an end by itself.

thanks sunil sir....for the info

so I opened the speaker............ , both woofer are in same enclosure, "no separate enclosure for mid range, so it is not 3 way but 2.5 way"......... though it's not connected in parallel but by a crossover network and working in tandem as you mention ................

PMPO.... (Peaked Music Poorly Outputted) I too had an AIWA and it is languishing in store room now......(i hate that stupid advertise....aiwa aiwa aiwa ) although the system was good, 120 watt RMS/channel (as on manual) transistor amplifier, but speaker were very poor.....

Megapixel (why most people say Meghafixel...instead...  ) no one bother about CCD sensor used in these point shoot cameras, most of them are just 5mm in size compare to SLR's 24mm (Dx) or 35mm sensors of same megapixel sized camera.

now LED TV in on the game of misleading marketing......... Are these LED TV are really a LED TV....? they are just LCD TV with LED used as edge lit or back-lit replacing fluorescent tube used to lit from below earlier.....

@VC sir ......... Sonodyne sounds amazing compare HiFi (PMPO) systems......definitely they will go another 21 years......no doubt