Onkyo TX-NR905 will this push my 7.1 LSi

not if you want to get the best out of your LSi's. Why not get a AVR with all the bells and whistles your want and pre out of the AVR with external amps @ 200watts a channel. You can get a better price on AVR that does what you want with less watts.

That's a negative ghostrider.

Get an amp, and pre/pro if you can.

You're going to want more amp for those speakers.

I'm running a full LSi HT on a B&K AVR 507 receiver

The AVR 507 is more or less high-end separates in one casing. Wouldn't compare that to anything Onkyo puts out. . . as nice as the 905 might be.

B&K is stout gear in my opinion.

I wouldn't hesitate to use it with a full set of LSi's, but I would set all the crossover settings for the speakers to small. The 905 isn't a lightweight receiver in terms of its power supply, meets UL requirements to be certified as 4 ohm compatible, and outweighs the B&K 507 receiver by a pound. Nothing else on the market has its features (4 HDMI inputs, 1080p upcoversion, etc). Adding an external amp at a later date if an owner wanted to would just make it that much better than it already is.

dkg999 wrote: »

I'm running a full LSi HT on a B&K AVR 507 receiver and it does just fine. I haven't really found much of a down-side, and I've swapped in some pretty good power amps. If I was really pushing the sound levels, then I might have a reason to add separate amplification. I think it depends on your AVR. The normal Onkyo, Pioneer, Denon, etc, I would vote no on.

How you diggin' that 507 ?
B&K avrs are more like seperates.Perfect for a combined HT - 2-channel rig.
Have the 307 and it's staying for along time.Unless the 507 falls in my lap that is.Heard the 507 kicks it up a couple notches over the 307.True??


Sorry,don't mean to jack your thread.

Jon, great the 905's working well for you. There's a post over on AVS forum that shows the inside of the unit. The most noticeable thing is the toroidal transformer for the amp section and separate power supplies for audio and video processing. The heat sink inside the middle of the unit does look fairly small, which is probably the main reason for the heat output and need to keep it well ventilated.

Show me a 7.1 Lsi system on an AVR and I'll show you how to blow-up an amp.

read-alot wrote: »

That Oink has some impressive current amp numbers, you should be fine.

Unless Onkyo have changed recently they were conservative with their output figures, I ran one of the earlier models with the SDAs back in the 80s and was more pleased with it than the Yamaha I tried after it.

Unfortunately, Onkyo got caught up in the War of The Watts to keep up their market share with the uninformed. You've shopped next to them. . . . they are the ones that buy those 1200W systems that have a quick-burn 3A fuse.

Onkyo's older (1980's to 1990's) 60W/80W designs are superior to most of their later 100W rated AVR designs IMO.

It appears that they are trying to get back to that, but I'm not convinced.

I have the 805, it's more than enough power in bi-amp mode (5.1 setup but using all 7 amps - front L/R are bi-amped with the SB channels). The 905 has what 10 more watts? Should be plenty unless, I don't know, your room is HUGE or you're not using a subwoofer for some reason.

Anyway highly recc. this receiver line. Using it with a PS3 and a HDMI cable box, have had zero HDMI issues.

No no... the 805 is designed to allow bi-amping of the fronts (others in the model line too). I have 5.1 speakers - you use the (otherwise unused) SB terminals to connect the fronts, and tell it so in the setup menu... Though I just bought a pair of FXi and going to go full 7.1 when they arrive

dorokusai wrote: »

What experience is that based on exactly? Onkyo has actually been one of the better manufacturers in regards to power ratings. The current WRAT technology is much more capable than the vintage amplifier designs. The Integra line, which is a division of Onkyo, has always produced some solid gear. All the ratings from the larger manufacturers exist in reality, but you'll notice very little consistancy in how they are measured.

I've owned four of them and loved them for their value. The late 80's to late 90's Onkyo receivers were bulletproof AND musical. Somewhere between the last one I had -circa 1999 and last years lineup (when I was AVR shopping), their amp sections went skimpy. Yet, the numbers went up, the weight went down, and the parts went cheap. . . because that is what sells. The WRAT as far as I can see is just a high-gain front end with attenuation, which will give you more initial gain but at the expense of dynamic range (compressed/limited) and linearity. Bad design for 2 channel, good for making cheap parts sound their best.

I know you've got gear coming out of your naughties. . . so, take a 1998 AVR, and do a 2 ch A/B with a 2005. If you are driving a moderately difficult speaker at volume, the 2005 won't compare.
I've made no reference to the Integra line. I've not owned one.

EDIT:
Looking at their current lineup, they are making mention to the way they measure their power ratings. Why would they even have to state it. Their old designs were conservatively rated. . Maybe they are coming back to their roots.