The Sri Chakra of Devi is perfect synchoronization of Universal Reality and the Individual Soul.
The Advaita system propounded Adi Shankaracharya,based on the Mahavakyas of the Vedas define Reality as Brahman .
It is is beyond Attributes.
It is beyond senses and a Noumenon.
It is Absolute with no reference to relate to.
The Individual Soul,Jiva is but a part of Brahman.
It is not separate,different from Brahman.
The individual soul,the world of Names and Forms are illusory in the sense that they are Relative.
The Individual Soul and the world of Names and Forms is because of Illusion.
This Illusion,at the Individual level is Avidya,Nescience,absence of Absolute Knowledge or loosely put Ignorance.
At the Universal level it is,Called Maya.
The Reality ,Brahman is the emobodiment of Being,Consciousness and Bliss.
Once ignorance,Avidya is removed the false ,Relative knowledge gives way to Absolute Knowledge,Brahma Gnana,when the Individual soul becomes aware of its original state,that of Reality,Brahman.
This,in short,is Advaita.
As it is impossible for the human mind to concentrate on mere principles,Hinduism,as a first step,recommends Personal God.
To facilitate the process of integrating the Universal Soul with the Individual soul,four tools are suggested.
2.Sounds in the form of Mantras
3.Geometrical shapes and
4.Combination of Sound and Geometrical shapes,Mantra and Yantra,which form Tantra.
One of the most effective Yantra is Sri Chakra of Devi.
For details of Sri Chakra,google sri yantra+ramanan50.
Sri Chakra and OM are interchangeable.
Adi Shankaracharya established Sri Chakra invmany places,including Kolluru and Sringeri.
The perfect Sri Chakra can be found at Sringeri,the Mutt established by Adi Shankaracharya.
‘The ancient temple of Sri Sharada, the presiding deity of Sringeri has a glorious history that begins with the setting up of the Dakshinamnaya Peetham by Sri Shankara Bhagavatpada. Originally it was an unpretentious shrine with the Murti of Sharada made of sandalwood, installed over the Sri Chakra that Sri Adi Shankara carved on a rock. Subsequently Sri Bharati Krishna Tirtha and Sri Vidyaranya had a temple built in the Kerala style, with timber and tiled roof. Sri Bharati Krishna Tirtha substituted the sandalwood idol with the present golden idol.
Sri Sacchidananda Shivabhinava Nrisimha Bharati raised the present structure in granite with polished granite walling round the sanctum and Sri Chandrasekhara Bharati consecrated the new temple in May 1916. Sri Abhinava Vidyatirtha made several improvements in the temple. The Mahamandapam has huge stone pillars exquisitely carved with deities like Durga, Raja Rajeshwari, Dwarapalakas and Devis which are all sculpted according to the Shilpa Sastras practised in Tamilnadu.
Sanctified by the worship of an unbroken succession of Acharyas of the highest purity, loftiest devotion and unsurpassed mantric powers, the Murti of Sri Sharada radiates grace and blessings.’
Reference and citation.