Axiom Home Page Forums General Discussion Home Theater New Speaker questions

I finally got my speakers yesterday, and i had a few questions.

1. My receiver does not allow me to bypass the xover. So do i set my front (m60's) as Large, center and rears as small, and for my sub, there are 3 options, on, off, plus. Plus is for large fronts and a sub, which makes sense, but i cannot change the xover less than 100. What setup should i use? sorry if thats not enough information

also...my sub (ep350) makes a whistle-like noise that i can hear when it hits certain frequencies. I spotted the problem to be the air that comes out the back panel through the xlr in/out plugs. Is there a way to stop this, is this normal?

Thanks

One last question. Is there any possibility of a foundation cement cracking from those spikes if i have cheap carpet in the basement? I doubt it but someone asked me about it and i wondered.

Speakers are sounding AWESOME though. I was amazed by the imaging with the initial setup and no fooling around with setings and placement. I can only imagine it gets better which is hard to believe

Hi,

The sub should not be leaking air from anywhere. Air exchange should only take place via the two front ports. You need to call Axiom and explain what's going on.

You will need to experiment with the cross-over and large/small settings to tune the system to what sounds best to you in your environment. Here is where I would start:

1. Set all speakers to small.

2. Set the receiver cross-over to 100Hz (optimally start at 80Hz but it appears that your receiver can't do this...very unusual).

3. Set the cross-over on the 350 to 60Hz.

4. Set the phase on the 350 to 0.

5. Set the volume on the 350 midway to the noon position.

6. Set the Active/De-Active switch to de-active.

When you start tweaking, the best place to start is the cross-over on the 350. Don't change too many things at once. Listen, understand how the change is affecting the audio, make notes and then do further tweaks. The bass should sound natural, blend with the other speakers and not sound thumping and over-powering.

The Axiom subs are powerful but unfortunately they cannot double as a jackhammer . I say this is unfortunate because I need a jackhammer to bust up my aging sidewalk.

To make your speakers image even better, experiment with toeing them in so that the tweeters point anywhere from a foot in front of your nose to a foot behind the back of your head.

Thanks for the info. My receiver is about 6 years old. Im getting a new one soon, but it only has settings of 100, 150, and 200...for the xover

I am not positive but...and I accept correction...if you set you sub x-over to 60 I think you will lose all the information between 60 and 100, which is your receivers x-over setting. The receiver will send everything below 100 to the sub, but the sub will only play everything below 60, thus the hole in the frequency range. Am I correct in this???

Unless something else is going on, I think your reaction is correct Joey. If he crosses over the receiver at 100hz, and crosses the sub over at 60hz, he loses everything in between.

From reading the description, it's a little hard to peg what would work best. But crossing over the M60's at 100hz turns them into glorified bookshelf speakers. I mean, I cross over my M22's at 80hz, and the M22's should have significantly less bass than the M60's.

Aouimet, you say you cannot defeat the crossover on your receiver. Usually, setting a speaker to 'large' and turning the sub to 'off' defeats the crossover and sends full-range to your mains. I am sure that is doable on your receiver. Do you mention the brand receiver you have?

All due respect to Mojo, I'd hesitate to cross over the M60's at 100hz and the sub at 60hz. If you can't set the M60's to small with a 80hz crossover, try them out as large, and see how it sounds. Try out the different bass settings as well.

As the most common method of setting the speakers (even M60's) to small and crossing over at 80hz seems to not be an option here, trial and error may work best for you here. Fyi, when using the pre-out on the receiver to connect to the sub (that is, using the receiver's crossover settings), the usual recommendation is to disable the crossover in the sub, or turn it all the way up so as to be a non-issue.

Follow me here...i THINK this might be correct. If i set the fronts to Large, then everything passes, giving the M60s everything, the center and rears i can crossover at 100, giving them everything over 100. As for the sub, i can turn the subwoofer to PLS (which im guessing is PLUS) which will give the sub everything under 100 as well, to which i can send the crossover to 80. That would make my only problem the m60s also handling low bass, is that right?

I believe my receiver is Pioneer...

This still doesnt solve my air leak problem, but i will just contact axiom when i verify that this is the problem.

Info on the receiver is needed to know how to set it up. The noise you hear from the sub is more than likely port noise. If this is the case you probably have the gain (volume) set to high. You will need to calibrate the system.

I knew my recommendation would be contentious .

There won't be a hole but there will certainly be a theoretical notch in the response. The degree of notching will depend on the filter orders in the 350 and the receiver. Practically, there may not be a notch at all depending on the room acoustics.

Other suggestions made so far are also worth trying.