Can I mix 5 ohm ( Front L/R) and 8 ohm (Surround & Sub) in a 7.1 speaker setup ?

I have 2 Martin Logan speakers with 5 ohm impedance and 5.1 Boston Acoustics speakers with 8 ohm.

I am planning connect all together and create a 7.1 home theater setup.

Can I connect all these 7 speakers with different Ohm rating at a time in the same receiver ?

If yes , what should be the impedence I have to set in the amp ? 6ohm or 8 ?

Kindly advise.

The below is my speakers & Amp I am having :

AV receiver : Yamaha RX V-575
Front speakers : Martin Logan Motion 15 (5 Ohm)
Surround : Boston Acoustics A 2310 HTS 5.1 (8 Ohm)

krishnaanish08-30-2017 10:52am

erik_squires Details Discussions Posts This discussion Message User 5,268 posts 08-30-2017 at 05:25pm Copy Comment URL Report Comment Edit Delete The amp supports a minimum of 6 Ohms. Set it to that for your fronts, but it will be a little bit of a squeeze. The lower the impedance (Ohms) the harder the speaker is to driver. A 4 Ohm speaker requires 2x as much current as an 8 Ohm speaker. Good luck, Erik
elevick Details Discussions Posts This discussion Message User 2,439 posts 08-30-2017 at 11:40pm Copy Comment URL Report Comment Edit Delete You are gonna cook your amp. The more speakers you use, the higher the impedance needs to be for that receiver. Since 5 ohms is the average, just think if you get a 3 or 4 ohm dip. You could buy an external multichannel amp or just a more robust receiver.
kosst_amojan Details Discussions Posts This discussion Message User 2,095 posts 08-31-2017 at 01:18am Copy Comment URL Report Comment Edit Delete Those MLs have a minimum impedance dip of 2.9 ohm in the upper mid-range. The wrong material with enough energy is quite likely to look like a short to that receiver's protection circuitry. https://www.soundandvision.com/content/review-martinlogan-motion-15
Post removed Sep 15, 2017