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Old 17th December 2005, 01:22 AM   #11
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I once returned a second-hand 450w PA amp as faulty and only later discovered when I bought my new Behringer 2400w beast that the cables had some loose in one of my subs!

Moral of the story: check your wiring, that everything is firmly connected and that VCs are correctly wired - both of them! Not that I think this is what it is, but its something to check. I felt like a twit when I found this out!
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Old 17th December 2005, 02:20 AM   #12
chops is offline chops  United States
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From what I've gathered so far, since you mentioned using the MCACC feature, I take it you have a Pioneer (Elite) receiver. As you may know, MCACC does not adjust any kind of equalization for the LFE channel, only the output level.

From what you're saying, it sounds to me like you DO have the Dayton sub's voice coils wired wrong internally. I would double check the wiring and make sure you have them properly wired in parallel in phase.
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Old 17th December 2005, 09:17 AM   #13
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I was going to suggest double checking the wiring on the sub too Chops. I've wired speakers with the polarity wrong before and sat there thinking wheres the bass when the cones are going crazy


The other thing to check is the speaker level settings - if the receiver has boosted the mains 10 / 12dB then maybe the sub out isn't giving enough level.

To check that the sub and amp are working properly you can set mains to large and conect the main L or R preout to the sub. If theres still no bass then the amp/driver needs more checking. If it works its something in the receiver settings.

Also make sure the dvd player is set to output digital (sometimes called bitstream) and that the recever indicates its playing dolby digital / dts too. (and that the digital out is connected to the receiver too)


Rob.
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Old 18th December 2005, 04:50 PM   #14
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I'm getting some decent bass now! Took the advice of all who recommended using the high level inputs and parallel wired the sub from the front speakers. Still shocking to me that just this change would work--why in the world do we have a sub preout line? I'll tell you the bass mgmt on the pioneer 1014 (it's not the Elite model) is not straight forward and I suspect many "home theater" receivers are similar. I tried all the variations mentioned on these posts but nothing really worked until I just didn't use the preout. However, I did not try adjusting the other speakers around the sub. I do think I'll be able to tweek the sub output by decreasing the other speakers' dB. Of course, I'm (also the wife) getting kind of tired of running the wires through the living room. Appreciate all the good feedback I got from everyone here. Happy Holidays!
Mark
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Old 18th December 2005, 10:53 PM   #15
Diode is offline Diode  United States
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Hey all,

This is some really great information. I had the same trouble on a Yahama reciever I bought years ago. It was easy to get into the sub out "volume" level but not much signal. Maybe the preamp is not happy. I did, however apply a car stereo sub crossover between the reciever and my amp, and it helped but not so good. I, like the other guy, later found out that it took a large signal to drive a Crown CE1000. I later built an amp but haven't had the chance to test it with the Yamaha reciever. I know it has a pretty sensetive input because it tests great on the bench, with normal input devices. All the info about setting the fronts to large and small settings is very interesting and helpful, so, thanks for discussing it!!!

Best wishes,

Chris
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Old 19th December 2005, 04:45 PM   #16
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Cool

Just make sure your bass management is set so that it routes the LFE to the mains now, otherwise you'll lose a lot of lovely bass in movies.

Rob.
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Old 19th December 2005, 11:50 PM   #17
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Pinkmouse--Thought it would be too shocking to go straight to just one post after somehow repeating the post 3x. Really, believe me, I'm not trying to emphasize my posts

Diode--absolutely this is a great website. Have found many helpful people and got the encouragement to DIY all my speakers. Now might venture into the SI t-amp arena a bit. You would think hifi manufacturers scout these posts b/c we certainly pick up on the problems in equipment --whether the hardware or just the "user unfriendliness".

Rob and the rest of the gang--the movies are sounding great; actually better with movies than with some music; perhaps b/c movies contain a higher average of "deep" tones (depending on what you listen to). However, I have a 5.1 system set up and will be building two more speakers to try the "THX" feature on my receiver and am not sure how that will work. Do you know if using the THX feature that the sub should be linked via the sub preout? Of course, THX can certainly be overrated. Just want to see if I can hear any difference (boy that's using a lot of senses).

Mark
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Old 20th December 2005, 06:11 AM   #18
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Typical THX config is all speakers set to small, xo @ 80Hz.

You're back where we started.

Rob
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Old 21st December 2005, 04:58 PM   #19
Diode is offline Diode  United States
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In a previous life, when electronics was still developed here in the US, I worked with electrical engineers and the management staff. NO! they don't look on things like this site as they don't see any flaws in their design. Once they make a "final" decision, on anything, it is set in stone. The corperate attitude really SUCKS in this way, because so many great ideas could come back from the customers, and great products could come out, but the bad attitude of the engineers and management prevent this. With today's digital technology, all that would have to be done is new code written.... big deal, right? Well again, with the attitudes involved, it IS a huge, big deal. Quite sad in my honest opinion but that's the lay of the land, I guess. I still tinker with electronics but have since changed careers to aircraft mechanic. It's a cool field too! Glad you got it all ironed out!

Chris
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