Provo
Mar 16 2003, 08:40 PM
Ok well my system is as below.
I haven't had time to make my pods...so i've just blu-tacked my tweets to approx where the pods will go....and they are really harsh!!! The Morels are suppost to be smooth and warm and cosy! Right...? What am I doing wrong? I tried reversing the polarity and it just got worse... Any ideas?
Also the time delay on my M500...what should i set it to for a hatch back? I have a Pioneer HU...but I just saw that I can set it on the amp...So hey...
Cheers,
Joe
shiny_car
Mar 17 2003, 04:51 AM
it may be a number of things, but firstly, give the splits time to run-in. this doesn't require any special technique, just time. most speakers sound harsh and bright straight out of the box.
however, it will also depend on the source/amp being used, and the music/recording. pioneer/alpine are both jap-designed components, which tend to have a slightly more 'sterile', super-clean sound, and to many people lack a little warmth. still, i would think that suits the morel's very well for a nice listenable SQ.
in terms of the tweets' position, i figure you have them in the kickpanel region?
TA on a subamp can be useful in an indirect manner. typically you need to delay the front stage relative to the sub coz the front splits are closer to you, so in order for the subbass to reach your ears at the same time, the fronts need that delay. as such, you generally shouldn't need to delay the subbass.
however, if you don't have TA on the fronts, you may be able to still set the subamp's TA to good effect. for a short period i delayed the sub relative to the fronts and it was nice; i figure it simply brought the subbass back in phase with the front stage so it created the 'bass up front' effect.
i think you'll just need to experiment, but i suspect you won't need to delay it more than 4~8ms.
good luck
Maz
Mar 17 2003, 05:01 PM
To set the correct time delay this is what u'll have to do.
Play a tone at the crossover frequency between the sub and fronts. You should find that both of them wont be 100% in phase. this depends on the crossover frequency and the distance of the subs.
If the speakers are 100% in phase the sound should be noticably louder than when out of phase.
If the speakers are 80% in phase delaying the subs will gradually move it to 90% and then 100%. However adding delay can also make it get worse, 80%, 70% 60% etc..
So play the tone and start delaying the sub until it reaches the loudest, i db meter would be excellent for this, to pick up the small volume increase. Dont play too loud or the voltage will drop.
If you find that your delay is quite high like 6ms.. then reverse the polarity of the sub or fronts, as you might be able to get a smaller delay to get 100%.
The reason one way needs more dleay is because its going, 80%.. 60%.. 30%.. 0%.. then back up again, eventually reaching 100%.
I hope ya can understand. Also do all this with the rear speakers disconnected.
Also if your crossing over at say 80hz it pays to play a tone a bit under, say 75hz to make midbass that few percent further forward.