LSi25 Question

bigmo77

I ordered a set of LSi25's prior to discovering this forum. I have a yamaha rx-v2700 av reciever. My question is most on this forum seem to recommend a seperate amp, does the built in 150 watt amp with the speakers not enough when combined with the 140 watts from my av reciever. I guess I'm just not seeing the need for a seperate amp? Any extra info would be appreciated.

wz2p7j

You'll get various opinions on this thread about whether an AVR will power the LSi line. Most concur you need a separate, high current amp. I can't find specs on the rx-v2700 anywhere. Is it capabale of driving a 4 ohm load? The LSi 25's are 4 ohm speakers (require high current) Chris

wz2p7j

http://www.audioholics.com/reviews/receivers/yamaha-rx-v2700-receiver-review/rx-v2700-measurements-and-analysis

Looks like it can indeed drive a 4 ohm load, although they don't give measurements with 5-7 channles driven.. This review is quite complimentary of this unit - congrats! Chris

bigmo77

Thanks for your response. I was thinking i'd be fine with the reciever/speaker combo when I ordered them, but skimming through these boards I was starting to second guess myself.
I know ultimately I'll have to wait to hear them together

VXR8

bigmo77 wrote: »

I ordered a set of LSi25's prior to discovering this forum. I have a yamaha rx-v2700 av reciever. My question is most on this forum seem to recommend a seperate amp, does the built in 150 watt amp with the speakers not enough when combined with the 140 watts from my av reciever. I guess I'm just not seeing the need for a seperate amp? Any extra info would be appreciated.

Welcome bigmo77,

Nice choice of speakers and receiver for that matter:D . I too have the 2700 and am just about to take the plunge to LSi speakers.

Although 140 watts will drive the 4 ohm load, 4 ohm is only for the front 2 channels on the 2700 - the other speakers need to be 6 or 8 ohm. If you go for a LSiC for the centre channel and either LSi f/x, LSi7 of LSi9 for the rears, you will not get the most out of those speakers from the 2700 alone.

The majority here on this forum will advise that you need at least 200 watts a channel amp (into 8 ohms) to bring any of the LSi series to life. I am actually also getting a Rotel RMB1095 to power the LSi's when I get them as the advice received on this forum is invaluable .

Good luck anyway.

bigmo77

I also ordered the LSiC, and 2 sets of LSiFX's for surround. I see in my reciever's manual where the fronts can be set at 4ohm, but all others will be at 6. Guess I oughta starting looking at an amp. I also have the PSW-1000 as a sub, would those outputs be able to subsitute using and amp for surrounds? It seems most on this board say to get a 2 channel amp, but I would still have speakers to push?

VXR8

Not 100% sure on that, but I am sure that someone with more experience will chip in and advise. It would certainly take some of the strain away from the Yammie with a 2 channel amp, but those more experienced and have the speakers already will be able to confirm that.

ben62670

Most 4ohm capable receivers just limit currant, and really are not suited to driving 4ohms speakers. I would look into a multi channel amp if you are going to use LSI series throughout. A 2 channel amp will also work well with the mains set to large, and the rest set to small.

Ben

cfrizz

You will have an all LSI setup which are all 4ohms. Get a 7channel 200wpc or more amp. Otherwise you are putting your receiver & speakers at risk.

Outlaw, Parasound, Rotel, Sunfire, Adcom, & Nad are just a few companies that will get the job done.

Welcome to CP!

bigmo77

Thanks all...
All 7 channel amps I'm seeing now are a little more then I want to spend for now.....
I just ordered an audiosource amp-300 for $200.00. Figured I'd use that for the fronts, and I just ordered a rotel rb-885 to power the rears/surrounds and center, for $430.00.