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SQBubble

Member Since 05 Oct 2006
Offline Last Active May 10 2014 09:15 PM
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Posts I've Made

In Topic: Xti2000 --> Xti4002 , worth the jump? or i-tech 4k ~ 6k

02 May 2014 - 09:16 PM

View Postdakos, on 02 May 2014 - 03:49 AM, said:

My guess is that you're pushing your box using the 30Hz EQ settings to try and make it do what it's not supposed to. Could you give me the dimensions of the box you build those subs and links to the subs Web pages so I may calculate what's their -3dB point. This way we can setup a HPF to remove the inaudible program and not overload your amp nor overdrive the sub.

I believe this is the thread you're talking about concerning the XTi 4002 20-20k specs:
http://www.crownaudi...topic=2088&st=0
I suggest you read it from start to finish.
Avi

Ya the box probably has lot to do with the issue... i remember it being 0.9cu.ft NET
the full specs & T/S parameter is this:
Posted Image

thx for the link, useful thread!!

View Postjoust, on 02 May 2014 - 11:00 AM, said:

My two cents worth :
Are you sure that the ART is operating at +4dBu?
The XTi2000 is capable of delivering 450W into 8 ohms and 800W into 4 ohms, per channel, or 1600W into 8 ohms and 2000W into 4 ohms Bridged mono. That's a lot of power for a 'small' room!
The XTI frequency response is quite flat from 20-20KHz. Having an XTi with DSP capabilities, you can tailor your sound using the built-in EQ, to pass those ELF. (Which frequencies are clipping?) I don't recommend the use of the SUBSYNTH, in this application.
Also, 450W (into 8 ohms) in a home setting is quite loud! I'm starting to believe that the clipping is coming before the amplifier.

Alain

You know, you actually made me think of something.... my subs are dual 4ohm and are wired in parralel which results in a ~2ohm final load.... I'm starting to think that maybe at lower frequency the impendance gets even lower and stresses the xti further? hmmm
Dont get me wrong the Xti2000 is one of the audio equipment that I cant seem to part with, I really love it... amazingly versatile, with xovers, eqs, good power output..all-in-one, super user friendly.. almost 7years that I have it and its still kicking..seriously where else can you get all of these feature in a easy to carry-put it anywhere 19” x 3.5" x 12.25” metal box? lol

Was powering an 18" ported sub prior the 10" and the output was stunning! changed because of lack of space... I think I will re-build a new and much better enclosure and see what happens first.

In Topic: Xti2000 --> Xti4002 , worth the jump? or i-tech 4k ~ 6k

02 May 2014 - 12:50 AM

The sub is this : http://web.archive.o...?showtopic=1013

The chain is simple and as follow:
computer sound card --> art cleanbox --> xti2000 --> subs
i did EQ some frequencies, raised a couple dbs in the 30hz region

Although the subs are each in theyre own sealed enclosure, which does make it lot more ineffecient... i used to run them in a car, ported, with 2000wrms, and they were happy with full of life... so im also thinking of making an enclosure that would result in a much more efficient output as well...

The clipping i was referring to happens really briefly through some movies with some peaks in the low frequencies... movies like transformers, avengers, ironman, basically all LFE heavy movies ... using to much EQ can greatly provoke that right?
it doesnt occurs with music...

What exactly is the 20hz-20khz output rms of the xti4002? i remember long time ago a thread went about that since the power rating is rated @ 1khz only  ...

thx