What's the differs btween these and the tl2s

We'll, some differences are that the tl1's are smaller, in dimension, and use smaller drivers, and possibly offer a different materials make-up in regards to the mid-range drivers. The tl1 tweeter(high frequency driver) is 1/4in smaller, 1/2in compared with the 3/4in tweeter of the tl2 speaker. The mid-range driver of the tl1 is in the 2 1/2in size class, and is listed as aerated polypropylene, and I believe it is a product of their laser imaging research, like their LSI, a past reference series, and the tl3. These aerated polypropylene drivers are positioned below the super cell aerated polypropylene drivers in their current "reference" LSIM series offerings. The tl2's woofer(mid-range driver) offering is a 3 1/4in in size class, and the material composition however is listed only as an injection moulded composite, and I suspect and might be the "lower-end" regular polypropylene of older technology, or the newer "higher-end" aerated polypropylene(like tl1 & tl3). I doubt it would use super cell, and still be positioned below the tl3.. My bets on regular polypropylene, this could support a pricing mode difference in the tl line-up, between the tl2 and tl3 offerings.. I think the tl2 speaker supports a larger frequency range than the tl1 speakers, as well, this doesn't denote "higher-fidelity" however, within all frequencies. I would likely think with the tl1, you might crossover your sub-woofer higher, because I'm guessing the tl1 system would be more sub-woofer dependant, for lower frequencies. This tl1 product might place higher demands on a "sub-woofer" solution. The tl1's likely also make higher demands of an amp, in order to produce the lower frequency range, as larger drives, afaik, in comparison, are typically more efficient for reaching lower frequencies, and the tl2 offers larger drivers. This might affect performance, especially at higher volumes. Conversely, the higher frequency driver damping might be easier with the tl1's, and perhaps they might be more effective there. IMO, I've read subjective accounts of the tl1's sounding "better than" or "the same" as tl2's, and vice versa.

My living room is 23'x25' do you think they would sound good with 4 of them on the walls, with the matching center speaker and 2 subwoofers ?

I have a almost identical size room. I replaced my older Optimus wall speakers and center speaker with 4 of these Polk Blackstone TL1 speakers, a TL1 Polk center speaker and used my existing Polk PSW-10 subwoofer, and the sound improvement was PHENOMAL!!! I am not sure that you would need 2 subwoofers. I highly recommend these speakers. They are small but very powerful

ASIN	B0043M665O
Best Sellers Rank	#84,412 in Electronics ( See Top 100 in Electronics ) #2 in Satellite Speakers
Colour	Black
Compatible devices	Desktop, Laptop, MP3 Player, Projector, Smartphone, Tablet, Television
Control method	Remote
Country of origin	USA
Impedance	8 Ohms
Included components	Polk Audio TL 1 Satellite Speaker (Each, Black)
Is waterproof	false
Item model number	TL 1 Sat black
Item weight	0.84 Kilograms
Manufacturer	Polk Audio
Material	Plastic
Model name	TL 1 Sat black
Mounting type	Shelf Mount
Number of Items	1
Power source	Corded Electric
Product dimensions	9.7D x 12.4W x 16.5H centimeters
Recommended uses for product	Home Theater
Speaker size	0.5 Inches
Speaker type	Satellite
Special features	[Time Lens Technology]
Subwoofer diameter	2.5 Inches
Surround sound channel configuration	2.1
Unit count	1 Grams
Warranty type	Limited
Wireless communication technologies	Bluetooth

Blackstone TL1 Satellite Speaker (Single, Black) | PowerPort Technology | Hi-Gloss Blackstone Finish | Compact Size, Crisp Sound | Pair with TL Series for Complete Home Entertainment

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