???LSi9 Questions???

mlebler

So I've been living with a pair of LSi9's in my stereo setup for a couple weeks now and have a couple questions. My preamp is an Emotiva XDA-1 and my amp is a PS Audio HCA-2 rated at 150wpc.

Here is a picture of my setup to get things started:




Firstly, the bass is a little "odd" to my ears compared to my Monitor 70's. When sitting dead center with the tweeters ear-level, the bass is very mellow and almost undetectable. But simply moving your head 2-3 feet to your right or left reveals WAY more bass....Where my monitor 70's generally filled the room with a constant sound, these LSi9's sound TOTALLY different depending on where you sit...its a weird sensation. I've tried a bunch of different positioning options with them but all seem to reveal a lacking of bass when sitting dead-center with the tweeters ear level and angled towards your head. Am I missing something here? Any ideas? Maybe I just need a sub to be happy.

Now for my second question/inquiry. I saw another thread with people taking about the impedance and ohm ratings of the RTi10 and decided to check the impedance on my LSi9's (just for some fun). To start things off, here are the ratings from the RTi10 that I took from another thread:





I did the same thing with my trusty multi-meter only to get some readings I wasn't expecting. It's probablly normal but I was mostly just wondering why I'm getting these readings. As you can see I get a reading of 2.2ohms on the low posts and no reading at all on the high posts. Can someone help explain these readings to me?

heiney9

Firstly you are measuring resistance not impedance. Secondly if you have the jumpers removed (as you do) then the circuit, via the xover, is incomplete so you will get an open reading on your MM as no reading at all since there isn't a complete path in the circuit. That is my guess.

Impedance varies with frequency and you can't stick the probes of a MM into the speaker terminals to measure impedance.

H9

mlebler

heiney9 wrote: »

Firstly you are measuring resistance not impedance. Secondly if you have the jumpers removed (as you do) then the circuit, via the xover, is incomplete so you will get an open reading on your MM as no reading at all since there isn't a complete path in the circuit. That is my guess.

Impedance varies with frequency and you can't stick the probes of a MM into the speaker terminals to measure impedance.

H9

OK, I get what you're saying. I was just curious why my reading were so much different then the RTi10's. Thanks!

heiney9

The schematics are posted here on the forum. Take a peek at both of them and see if you can determine what's going on.

H9

Geoff4rfc

mlebler wrote: »

Firstly, the bass is a little "odd" to my ears compared to my Monitor 70's. When sitting dead center with the tweeters ear-level, the bass is very mellow and almost undetectable. But simply moving your head 2-3 feet to your right or left reveals WAY more bass....Where my monitor 70's generally filled the room with a constant sound, these LSi9's sound TOTALLY different depending on where you sit...its a weird sensation. I've tried a bunch of different positioning options with them but all seem to reveal a lacking of bass when sitting dead-center with the tweeters ear level and angled towards your head. Am I missing something here? Any ideas? Maybe I just need a sub to be happy.

Judging by the picture, and I could be wrong, it looks like from the toe in point, the lines intersect in front of or at the listening position.

Try widening the so the toe in intersects just behind the listening area.

nhhiep

+ 1 about the bass thing. I am using Lsi9s as computer speakers and I get less bass when I am dead center in front of the monitor.

heiney9

I onwed LSi9's and I got loads of bass all over the room. Sounds like a room/placement issue to me.

Denon Frank

Should those speakers be reversed so the tweeters are on the outer edge? Are they sitting on Skyland stands?

skrol

This is probably a dumb question but are you certain that you have the phase correct on both speakers. Having one speaker reversed will produce the result that you described.

Just a thought
Stan

mlebler

Phase is all good...The stands are just some generics I picked up used....Tweeters are suppose to be on the inside as per the manual, each speaker is also marked "left" and "right"....After a lot of positioning of the LSi9's, it just turns out these things are VERY finicky about placement. In my small room mere inches make a huge difference in the bass response. I ended up moving them away from the walls and bringing them closer together as I was getting an annoying bassy hummmmm from the walls. After an inch here and an inch there, I finally got them sounding "equalized" to be my ears. Bass is still much stronger on the outside of each speaker but I can live with it, they still sound amazing. They really need a good amount of volume before they really come to life, low-level listening isn't superb. But once they open up they sound great....I think they would benefit from a larger listening space as well.

steveinaz

Especially in a narrow room; but when you move your head away from center, and closer to boundry corners you will hear bass reinforcement. I believe this is what is going on. Moving the speakers closer together (away from corners) will reduce the bass reinforcement.