THIS IS THE REPLY I GOT FROM TATA ACOUSTICS/BLAUPUNKT
You can put two co axial oval or round speakers on the parcel tray, if you can adjust your luggage space.
Also you have to take separate speaker wire from rear door pillar to rear parcel tray.
You can not connect any amplifier from local market. Because system in your car do not have pre amp output.
There is an Blaupunkt amplifier for OEM
fitted music systems.
For more information on this Blaupunkt amplifier you have to call our Toll free number: 18002096820
, or you can share your phone number so that we can call you.
System fitted in Indica Vista Aura is basic model. It does not have any USB connection behind.