Infinity Primus Owner's Thread - Page 116

I know Norske has already supplied the dimensions and yeah, it's a big boy for sure. Well, along with that mammoth size comes some weight. It's roughly 25 pounds so make sure you're able to put it someplace that can support it before you decide to go for it.

If you can, for the little extra that it is, go for the PC351.

Right now, I am using the Pioneer FS51.

I find the Infinity P363 is on sale with a very reasonable price.

Do you think it will be an obvious improvement? or are these two speakers are in the same level?

Thanks!

For the P163, how much power should the receiver have? I've been thinking about getting this receiver.

http://www.amazon.com/gp/product/B007JF8FD8/ref=s9_psimh_gw_p23_d0_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=03273CG599STQFHPWFMS&pf_rd_t=101&pf_rd_p=1389517282&pf_rd_i=507846


Would this be sufficient?
Edited by ShadowJ20 - 1/9/13 at 4:01pm

That should be completely sufficient.

I bought my P363s and 153s a couple of weeks ago at Fry's for under $375 for both pairs. I recently found the linked thread and wonder if i should drop my Yamaha VX-573 to 4-6ohm?

Ok thank you

Not worth the trouble. That switch is there for bench testing.

As far as the Primus speakers actually being 4 ohm speakers, here are impedance curves that probably are very close:





Long story short they should be rated at 4 ohms, but I don't foresee any problems with using them with just about any AVR.

There are a number of budget speakers reviewed by Audioholics over the years that indicate speakers that dip down to 4 ohms in the mid-bass region. Some even lower and over a wider band than the Primus, and yet the reviews don't state that they are "clearly a 4 ohm speaker" or "present a strenuous load" like the Primus reviewer states. I'm not necessarily saying the reviewer is wrong, but I don't believe that one review is enough to draw a firm conclusion.

FWIW, my P163's are driven by my unrestored 1979 Pioneer SA-5800 amp which is rated at 25 WPC. It has no trouble whatsoever powering my Primus speakers to deafening volumes without distortion or clipping.

I'm sorry that my post was so unclear that you didn't get the idea that other amateur reviewer opinions were not part of my decision-making process but that in my opinion loudspeaker impedance curves rule.

That big wide dip to near or below 4 ohms above 100-200 Hz should be the determining factor.

I am again sorry that my post was so unclear that I in general foresee no problems using most amps and receivers with speakers that are or should be rated at 4 ohms.

I don't believe your post was unclear at all and I don't disagree with your opinion. I was not responding to your post - I simply followed your post chronologically (although your provided impedance curves charts for the P363 did help illustrate my point). I was actually referring to the Audioholics review of the Primus P363 (which the quotations in my post are from), and comments made in the linked thread provided by RPGMasta above.

What "amateur" reviews are you talking about? The Audioholics website says they are "Pro Reviews" and the charts attached to their reviews indicate access to the same test equipment as the P363 review. For example, here's another speaker with a very similar impedance curve...

From Audioholics:

EMP Tek E5TiR: "The EMP E5Ti impedance measured within the manufacturers 6 ohm claim...The E5Ti should play nice with nearly any receiver"



In a few of the Audioholics reviews I've read over the years, I've read the comment, "The Sencore consistently measures impedance one ohm low." Not sure what equipment was used to measure the Primus because the reviewer didn't provide that information. Certainly that information would be nice to have...

All I am saying is that one cannot assume the presence of consistency, objectivity, or satisfactory controls in any single audio review taken in a vaccuum. I think Stereophile at least is more reliable because John Atkinson does all the measurements and presents his findings in the same format every time.
Edited by palmfish - 1/13/13 at 10:11am

I'm considering the P163's or P153's for our front speakers in our family room/TV setup. When we listen to music, this is where we do it. Usage would be about 60% movies and 40% music. Since this is a fair amount of music, would I be better off going with the larger P163's? We have a 8" sub already. Would it be a bad idea to buy a third P163 or P153 to use as the "matching" center channel speaker? Thanks.

A very smart idea actually. Your center channel would then in fact "match". All other solutions are not as good.

That's what I do, using three P163 speakers up front. I use four P153 speakers for surrounds. Having compared them at the L/C/R positions, I prefer the 163s, if only because they move a little more air (as frequencies get lower, it's nice to feel the sound as much as hear the sound).

Thanks guys. If I decide to upgrade my surrounds down the road, I will go with the P153's. They can be mounted flush against the wall, correct?

the two pre-installed mounting brackets are a few millimeters off of the back of the enclosure, as well as rubber bumpers on the bottom corners.

Thanks. And the best way to mount a P153 is a single screw into a wall stud, backed out slightly?

Its actually two brackets. The manual says to use #10 wood screw with anchor, unless going directly into stud. Leave just shy of 3/4" between wall and screwhead.

Which speaker would work best as surrounds, with P163 fronts: P143 or P153? Thanks.

P153 - 5.25" driver, goes down to 58 hz. A little deep at 10.5" for wall mounting.

P143 - 4" driver, goes down to 100 hz. Is this low enough for surrounds?
Edited by Jim McC - 1/23/13 at 12:28am

If you have room get the P153, especially if you listen to multichannel music or music dvd/blu ray.

Thanks

Thanks. Does that mean one bracket mounts to speaker, and one mounts to wall?

It is one bracket at each top corner with rubber number on each bottom corner.

Thank you.

Got a question, I plan on getting 4 Infinity Primus P163K and 1 Infinity Primus PC351, which receiver brand would be best? I only care about games and movies(blu rays/DVDs), I don't care for music.
Denon? Onkyo? Yamaha?


And for PC351 owners, would it be OK if I put a 23 inch LCD monitor on top of it? That's the only way I can fit it on my desk.

Got a question, I plan on getting 4 Infinity Primus P163K and 1 Infinity Primus PC351, which receiver brand would be best? I only care about games and movies(blu rays/DVDs), I don't care for music.
Denon? Onkyo? Yamaha?


And for PC351 owners, would it be OK if I put a 23 inch LCD monitor on top of it? That's the only way I can fit it on my desk.

What's your budget and any other requirements? Number of HDMI inputs/outputs, automatic room correction capable, multi-channel analog inputs/outputs, number of zones, etc? If you just need bare bones receiver I recommend a refurbished Denon 1713.

Sure, why not. 23" monitors are fairly light. So long as the stand will fit on the speaker you should be fine.

It doesn't matter. Whichever one you find on sale.

Alright thanks guys, another question can someone link me to speaker cables? Like the cables that run from the speaker to the receiver. Preferably at Newegg.com

Get this...

http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10239&cs_id=1023901&p_id=2747&seq=1&format=2

If you must order from Newegg, they have this...

http://www.newegg.com/Product/Product.aspx?Item=0FB-0019-00014&ParentOnly=1
Edited by palmfish - 1/27/13 at 7:12pm

Metra Raptor is accuses of selling significantly undersized wire on Amazon, FWIW.

http://www.amazon.com/Metra-Raptor-S12-50-Gauge-Speaker/dp/B000281XGK