Axiom Home Page Forums General Discussion Home Theater EP125 Problem ?

Thanks Guys,
Just got off the phone with Axiom.
The problem is my tiny S.W. is being "overwhelmed". The answer was to turn it down a bit more when watching the more noisier (deep bass) movies.
Its only set at 10 to 12 right now and still does it.
I will have to reduce the DB output on the receiver from 0 to maybe -2.
The other alternative was get a bigger sub. The EP175
Thanks again,
Neil

swampfox:

All Yamaha receivers LFE and SW levels are set at maximum (0db) from the factory, so dropping it down 4-5 db will help. Your best bet is to get a set-up disc like Sound & Vision Home Theater Tune-Up, Video Essentials, or Avia, and also a SLP meter from Radio Shack to properly calibrate your system.

I believe my Denon receiver is set at -4dB for the sub, and I have the EP350 volume at 12 o clock....

Hi again,
Well i had to turn it down to -10db to reduce the vibration.
Still there a little bit. Volumn on S.W. at 10 to 12.
Will have to live with that for certain movies.
Looking for a bigger S.W. going cheap. Check your garages and attics.
Thanks again,
Neil

doesn't seem right....

I've been running merrily along for over a year with an EP-125 without running into any problem like this - something's wrong!

No it does not seem right.
Turning the receiver down to -10db is the lowest setting.
Its like turning it off.
Strange, but it still vibrates a bit.
Neil

Swampfox, how big is your room.

Are you anywhere near Toronto ? If so, want a second opinion ? I could bring over a bigger sub to play with as well

The room size is 12' x 16' but open on 2 sides.
I have QS4'S on the ceiling on the open sides and QS4 on the wall on the other side.
M60's and VP100 up front. All sound ok with the volume on the receiver at -20db. But when the EP125 is turned lower it does not have the same impact.
I live on the other side of Cambridge.

If the room is open on two sides then there is a pretty good chance the sub is just too small for the room. Only other possibility I can think of, depending on the receiver, is to push the crossover frequency way down and rely on the M60s to carry some more of the bass. The M60s go pretty deep on their own, maybe if you only ask the EP125 to carry the lowest notes you can get the "oomph" you want without overloading the sub.

The EP125/M60 combination sounds like an unusual one -- M60 is -3db at 37 hz while EP125 is -3db at 35 hz. Did you have smaller mains before then upgrade ?

I would try the following :

- set mains to "Large" if not set that way already
- set crossover frequency on EP125 to 40 or 45 hz, maybe start with 40 and go up from there

You may already be set up this way, of course.

The other obvious thing is to make sure your sub is positioned as well as possible to maximize bass output, usually in or near a corner unless you are right near the middle of the room.

Have you done the "put the subwoofer in your favorite listening chair then crawl around the room pretending to be a subwoofer and looking for the spot where you get the best bass" trick ? If not, that might be a good idea. You will probably need a longer subwoofer cable than you have now, everyone else does