correct wattage for LSi15s

[flldtt]

Hi, I'm new to the advanced fidelity field. I just purchased a pair of LSi15s to pair with my Sony STR-DG920 receiver. My question relates to my understanding of impedance. Since my receiver is rated at 110W x 7 (8 ohms, THD 1.0%), and the speakers are rated at 4 ohm impendance, does that mean they will receive 220W? Should this be sufficient for these speakers? Thank you for any help. I am moving to my first home and would like to avoid purchasing a separate amplifier right now, but if they need more power to sound great, I will have to splurge.

David

[Bernal]

Hi, I'm new to the advanced fidelity field. I just purchased a pair of LSi15s to pair with my Sony STR-DG920 receiver. My question relates to my understanding of impedance. Since my receiver is rated at 110W x 7 (8 ohms, THD 1.0%), and the speakers are rated at 4 ohm impendance, does that mean they will receive 220W? Should this be sufficient for these speakers? Thank you for any help. I am moving to my first home and would like to avoid purchasing a separate amplifier right now, but if they need more power to sound great, I will have to splurge.

David
Same question for some time.
You need to use an amplifier at 300 watts. It is the base for LSI sing.

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1) DENON AVR-4308CI: Advanced 7.1 CH/5.1+2 CH/ 3.1+2+2 CH A/V Home Theater /MultiMedia Multi-Source/Zone Receiver with Networking and WiFi/170 watts x 7 channels
2) HITACHI P55T501. 55" HD1080 Plasma HDTV
3) OPPO DV-980H 1080p Up-Converting Universal DVD Player with HDMI and 7.1CH Audio
4) DENON DVD-2500BTCI: Blu-ray Disc™ DVD/CD Digital Player/Transport (
5) POLKAUDIO LSiC (Center speaker)
6) POLKAUDIO LSi15 LEFT (Front speaker)
7) POLKAUDIO LSi15 RIGHT (Front speaker)
8) POLKAUDIO LSif/x LEFT (Surround speaker)
9) POLKAUDIO LSif/x RIGHT (Surround speaker)
10) SONY SA-WP16 ( Sub Woofer 2X200W)

[cfrizz]

Start splurging, but first make sure that your Sony has preouts to add separate amplification.

And to correct the info above, Try to get an amplifier that has 200wpc @ 8ohm which will probably put out about 300wpc @ 4ohm.

The more power you give the LSI's the better they will sound & the less risk of damaging them from being underpowered by an inadequate receiver.

[jimmydep]

I was powering my LSI 15's with a Yamaha 95wpc receiver, I just added an Emotiva XPA-5 amplifier with 200wpc @8ohm & 350wpc @4ohm.

The LSI's came ALIVE with the Emotiva. I didn't need my sub woofer any more and there was a significant widening of the soundstage, the vocals are more powerful with greater clarity.

I would say go for the power!!!! you won't be sorry.

[cfrizz]

Welcome to Club Polk Jimmy! And Thank You for the concise, accurate assessment of what lots of separate power can do for the LSI's!