Apologies for the atrocious formatting. Could not find a way to correct it 
Appreciate your quick response and the helpful information!Generally speaking, the receiver won't damage your speakers by running Audyssey and testing out your calibrated receiver. I am not sure what model speakers you have, perhaps if they are all very small speakers from a home theater in a box that are designed to run on a much weaker amplifier, you might over power them.
Just make sure to turn your volume down after calibrating and turn it up slowly while testing. If you hear a lot of distortion, then your speakers are not a good match and you should immediately turn the volume back down. I assume you will be okay, most speakers can take a little bit of a beating before they fail, and the marantz slim line receivers are not very powerful.
I recommend reading through one of the Audyssey threads around here, they are full of useful information.
Thanks so much for the warning.I recommend that you keep the volume on the lower side, those speakers don't seem like they can take a lot of power. From the looks of the specs those speakers were part of a home theater in a box and aren't designed for a different receiver than the one they came with. As long as you keep the volume of your marantz receiver low, you should not blow the speakers.
I believe that subwoofer will only be useful while you are using the current speakers, it probably does not have enough output to match more efficient speakers, like the Polks you are looking at. I would consider saving up and buying a new one when you are able.Thanks so much for the warning.
On a side note, will the current subwoofer be useful (at least as a second sub)?
Appreciate the advice. Truly grateful.I believe that subwoofer will only be useful while you are using the current speakers, it probably does not have enough output to match more efficient speakers, like the Polks you are looking at. I would consider saving up and buying a new one when you are able.
Going from 3" satellites from one brand to 3" satellites from a different brand really won't be much of an improvement. Save up some money for full size (5.25" drivers or larger) bookshelf speakers. You can add the center and sub one piece at a time after that. You're off to a good start with that very good Marantz AVR.Thanks so much for the warning.
Looks like, I will soon upgrade to one of these:
Polk TL 1600 5.1 - about 520 USD (converted price from INR) - Looks compact and affordable.
OR
Elac Cinema 5 - similar price and specs.
Any other suggestions for speakers would be welcome for Marantz 1609.
On a side note, will the current subwoofer be useful (at least as a second sub)?
Thanks,
Niranjan
Thanks!Going from 3" satellites from one brand to 3" satellites from a different brand really won't be much of an improvement. Save up some money for full size (5.25" drivers or larger) bookshelf speakers. You can add the center and sub one piece at a time after that. You're off to a good start with that very good Marantz AVR.
It would be a quantum leap from HTIB speakers, however don't expect excellent sound quality. The will play loud, but keep in mind they're built very cheaply to meet a price point. You are getting quantity over quality, but better than what you have now.Thanks!
Would something like these fit the bill?
Taga Harmony 606 v3 - 420 $ (converted from INR)
(https://www.tagaharmony.com/en/product/799/tav-606-v-3)
Pure Acoustics Spark - 580 $ (converted from INR)
(https://avstore.in/collections/5-1-speakers-packages/products/pure-acoustics-spark)
Thanks,
Niranjan
Tradeoffs everywhereIt would be a quantum leap from HTIB speakers, however don't expect excellent sound quality. The will play loud, but keep in mind they're built very cheaply to meet a price point. You are getting quantity over quality, but better than what you have now.
That's ultimately what you should want: a system that sounds balanced.Then I ran Audyssey (albeit with fingers crossed), which ran smoothly, without any damage to the speakers (as per my original query). The corrected sound seemed to lack in bass, though the 5.1 sound sounded better balanced.