I'm a rookie and need some help. LC265i

steve-o

Hi guys. I am a rookie so please be gentle. Anyway, Is it OK to use a csi5 center channel with a pair of LC265i's..??? Or does it make sense to get another LC265i as the center channel. I have a house being built and they are building the custom dryway ent center this week so I need to make some quick decisions on speakers, dimensions etc, with not a lot of time to research. Any thoughts or guidence would be appreciated. Thank you..! Steve email: steve-o@att.net

ncsercs

They don't help newbies around here unfortunately.....

gwsolace

I looked up those wall speakers, nice looking units. Although I have never used in-walls, an frontstage utilizing 3 of the same speaker will timbre match perfectly. Timbre matching just means attaining the same sonic charateristics throughout the system. That 1" ring radiator tweeter in the lc265i are different than the 1" tweeter of the csi-5. I would get 3 lc265i for your front stage, it will sound seamless between all 3 front speakers.

Larry Chanin

steve-o wrote:

Hi guys. I am a rookie so please be gentle. Anyway, Is it OK to use a csi5 center channel with a pair of LC265i's..??? Or does it make sense to get another LC265i as the center channel. I have a house being built and they are building the custom dryway ent center this week so I need to make some quick decisions on speakers, dimensions etc, with not a lot of time to research. Any thoughts or guidence would be appreciated. Thank you..! Steve email: steve-o@att.net

Hi Steve,

Yes, it does make sense to go with another LC265i as the center channel. You want to match the timbre of the front three speakers. This is to avoid the pitch of the sound changing as it pans from one speaker to the other. To get the best match usually requires indentical drivers, or better yet identical speakers.

The CSi5 has different drivers than the LC265i's. The LSiC has identical tweeters and similar, but smaller mid range and woofers. However, I think your best bet is another LC265i. They are very nice speakers.

By the way, just ignore ncsercs. He posted his first message and then when he didn't get an immediate answer he fired off three more posting bad-mouthing the forum members.

Good luck with your project and welcome to the club.

Larry

Frank Z

ncsercs wrote:

They don't help newbies around here unfortunately.....

That's right, we just point and giggle. :rolleyes:

We help anyone that needs it. We were all "newbies" at some point.

Welcome Aboard Steve-o! Stick around, lots of good people here....and occasionally some cheap entertainment.

kmartin971

I have done a lot of research on the LS265is! Use the in wall enclosures also. Do not match the CSi5 with these speakers!

TroyD

I'd say go with the inwall if at all possible. Keep everything as similar as possible.

BDT

dorokusai

Steve - I would go with the aforementioned suggestions to keep it timbre matched, especially across the front stage. You have the luxury or pre-construction, so the choice is easier. Polk recommends the same speaker for a reason, go with the suggestion.

As to the use of the wall enclosures, I don't agree with them being neccesary but that's dependent on your application and budget. If you want to limit your costs, try to box in the speakers within that wall via bracing. Email polkcs@polkaudio.com for some recommendations on internal pre-construction bracing sans Polk Audio enclosures. It may not be perfect, but it will be better than an 8+ft. hollow cavity.

You'll probably never read another comment from Ncsercs, so please feel to ignore him and his sloppy agenda.

Larry Chanin

dorokusai wrote:

As to the use of the wall enclosures, I don't agree with them being neccesary but that's dependent on your application and budget. If you want to limit your costs, try to box in the speakers within that wall via bracing. Email polkcs@polkaudio.com for some recommendations on internal pre-construction bracing sans Polk Audio enclosures. It may not be perfect, but it will be better than an 8+ft. hollow cavity.

Hi Steve,

Mark is correct there are other options that you can pursue by installing "Fire Breaks" in the wall's stud bay to box in the proper volume. Check out page four of the LCi Technical Information.

kmartin971

The polk site also suggests the following:

http://www.polkaudio.com/downloads/CustomInstallChallenges_05.pdf

and

http://www.polkaudio.com/homeaudio/products/hidden/?helpid=39

del47618

I am considering LC256i's for my LCR speakers and the dispersion graphs seem to indicate that I'm going to want to rotate my center to be sideways, since the normal orientation "horizontal" dispersion for 16 KHz is quite low outside of 15 degrees. My question is how are you meant to mount this? The speaker is wider than stud widths. It looks like the LC65i might be small enough to install sideways - has anyone done that?

Larry Chanin

del47618 wrote:

I am considering LC256i's for my LCR speakers and the dispersion graphs seem to indicate that I'm going to want to rotate my center to be sideways, since the normal orientation "horizontal" dispersion for 16 KHz is quite low outside of 15 degrees. My question is how are you meant to mount this? The speaker is wider than stud widths. It looks like the LC65i might be small enough to install sideways - has anyone done that?

Hi,

Judging from it's cuttout size it appears that the LC65i's could be mounted horizontally between standard spaced studs, whereas the LC265i's could not be mounted horizontally without cutting and boxing out the studs.

While it's true that the LC256i's do have a narrower horizontal dispersion at 16 Hz, if it were me and I could fit in a vertically mounted LC265i for my application, I wouldn't inadvertently create other problems or trade-offs by trying to "correct" this perceived dispersion issue.

First, the center channel carries most of the content of multi-channel music or soundtrack, more than the mains. So for the speaker carrying the largest share of the load you'd be switching from a speaker rated for 200 watts to one rated at 125 watts.

Secondly, while being a close timbre match to the LC265i's, the LC65i wouldn't be a perfect match particularly if you rotated it to be horizontal.

Finally, I doubt there is a lot of content in the 16kHz range for you to be unduely worried about. For example, musical instruments have fundamental frequencies that don't exceed 4.1 kHz and even a soprano's voice doesn't exceed 1.2 kHz. (It should be pointed out that harmonics of these tones can go higher than the range of human hearing, so I'm not suggesting that we shouldn't be concerned about the frequency response of our speakers above those values. Just that we shouldn't be unduely concerned if the directivity of frequencies at 16 kHz is narrower.)

Only if there were other practical considerations, such as the location of your screen, etc., that made vertical mounting impractical would I switch to a horizontal configuration.

Larry

scottnbnj

the tweet is aimable, so the off-axis response of the tweet shouldn't be the issue. i'd be more concerned with the mid/bass drivers if mounting them vertically if the speak is off-axis with the listening position. ideally, you want all of the drivers as close to the same distance from the listening position as possible so that the sound from each arrives at the same time, uh,relative to each other.

)

Larry Chanin

scottnbnj wrote:

the tweet is aimable, so the off-axis response of the tweet shouldn't be the issue. i'd be more concerned with the mid/bass drivers if mounting them vertically if the speak is off-axis with the listening position. ideally, you want all of the drivers as close to the same distance from the listening position as possible so that the sound from each arrives at the same time, uh,relative to each other.

)

Hi Scott,

I'm afraid I don't understand your comments.

No matter how the speaker is oriented, or whether it is mounted on-axis or off-axis relative to the listener, the distance from the listening position to the various LC265i drivers is going to be slightly different, but probably not enough to make difference.

For example, making this as simple as possible, suppose we position the speaker vertically, on-axis with the listener and the tweeter is exactly at ear level 10 feet away. The bass and mid-range drivers are 5" above and below the tweeter. If we do the math, the tweeter is exactly 120" from the listener and the bass and mid-range drivers are both 120.1041" from the listener. This would represent a delay of 7.7 millionths of a second between the sound coming from the tweeter and the sound coming from the bass and mid-range drivers.

If we use the same exact arrangement, on-axis, with the tweeter exactly at ear level 10 feet away, except we orient the speaker horizontally, nothing would change. The tweeter would be 120" from the listener and the bass and mid-range drivers would still be 120.1041" from the listener.

Likewise, if we move the listener off-axis we're still going to have different distances between the various drivers and the listener regardless of which orientation the speaker is in.

Larry

cewolcott

Larry,

I am installing the LC265i horizontal as a center channel. The sweet spot is dead center on the screen but there is additonal seating (e.g., Sectional couch) to the right of the screen. Would you place the mineral polypropylene cone or the aerated polypropylene cone closer to the additionl seating? Add which is which? From the picture on the web site there is a blue and a black cone.

Larry Chanin

cewolcott wrote:

Larry,

I am installing the LC265i horizontal as a center channel. The sweet spot is dead center on the screen but there is additonal seating (e.g., Sectional couch) to the right of the screen. Would you place the mineral polypropylene cone or the aerated polypropylene cone closer to the additionl seating? Add which is which? From the picture on the web site there is a blue and a black cone.

Hi CE,

The aerated polypropylene driver is on the top of the LC265i when the speaker is mounted vertically with the polkaudio logo correctly oriented.

Personally I don't think it makes any difference which driver is closer to the additional seating.

Larry

camoodwin

Will the LC265i as a center match my LC80i Front L&R and Rear L&R, or should I just go with another LC80i as my center to keep them all the same? Thanks in advance, love Polk!

kingkip

Hi camoodwin

Just an FYI you would probably be better off making a new thread rather than tack on to an old one. You'll get more response that way. When people see an old thread moved to the top it is confusing sometimes.

The two should match as they use the same tweet and driver. Do you have the 80 in the ceiling for the fronts? If so I would wonder if the soundstage would be weird by having the fronts in-ceiling and the center in wall and lower.

Good luck and keep asking ?s

BeardsOfCanada

WHAT IS THIS OPEN LETTER FORMAT
THIS ISNT A TEA PARTY

love,
yours truly

Frank Z

Good Gawd B of C! Are you a professional Troll or just out to be a pain in the ****.

.Jon

well hes told me he just likes to hurt peoples feelings

BeardsOfCanada

Dearest Frankey,

We have not made love in such a long time... is it because of my actions? You know I don't sleep around, why do you treat me so? I don't make any money doing this so I can't call myself a professional. Is it because I'm a spelling ****? It's God not Gawd, Mr. Hippity Hop. I guess it is because I was a pain in the ****, but you said you were willing to experiment! I hope we can settle our differences, my arms are pretty tired.

Love,
Big Ol' Cockadoodledoo

Frank Z

see ya.....


3...2...1...

BeardsOfCanada

If you really take offense you may want to lighten up a little bit. This is the internet here kiddo. If any moderators or administrators have a problem with anything I have done they have the right and the power to delete my posts, modify my posts, or ban me.

MrNightly

And... delete them they have. Another troll hits the board, though he is a complete idiot compared to our LSI buddy. Not THAT was entertainment!

Boy, I miss him already

BeardsOfCanada

MrNightly wrote:

And... delete them they have. Another troll hits the board, though he is a complete idiot compared to our LSI buddy. Not THAT was entertainment!

Boy, I miss him already

??? okay
ps you spelled now wrong


seriously, to not ban me would be an insult to all the members of this board.

matteog999

Wow, Steve-O I hope you got your aswer out of all this mess if not here it is; USE THE LC265i AS YOUR CENTER CHANNEL.

As far as the positioning I'm glad you are building the house as you will need a 21" opening (and studs are usually 16" apart. Just tell your construction guys to build a frame (just like a window).

I hope this answers your question.

MrNightly

BeardsOfCanada wrote:

??? okay
ps you spelled now wrong


seriously, to not ban me would be an insult to all the members of this board.

Thanks for the grammar lesson. I feel so much more enlightened with you pointing out my writing errors. Now only if you could work on making yourself disappear, we'd all have something to cheer about!

And you wouldn't understand the humor of LSi's, hence your confusion... but it's ok. Since you obviously aren't here to learn about Audio, it's foolish for any of us to waste another letter on you.

Goodbye

steveinaz

Gotta love those internet commandos...could you come up with a new approach; something interesting, different, refreshing? The grammar **** thing and civilized insults are dated, like men with permanents and butterfly collars.

kingkip

I thought Canadians were supposed to be nice.