SQcomps install

[talnlnky]

Originally Posted by Alien Mantis

And why would you want to force the tweets to play lower?
Wouldn't you just let the midrange drivers handle those freqs?

I might know a little about how "audio" works, but I am obviously not experienced with tuning a high-end competition system.
So I ask these questions just to build on my own limited knowledge.

well, there are a ton of variables...

If it was possible to make a perfect sq system. you would only have 1 speaker per channel (ie, left speaker, right speaker) and it would be able to play from about 15hz up to 25khz. Problem is that it is VERY difficult to make full range speakers. There are 10 octaves of sound in the 20hz-20khz range. the best "full range" speakers on the market currently are 3"-5" units and they are only capable of playing 7-8 octaves. Most struggle to play above 10khz, and most can't play well below 80hz.

The reason why a single speaker is awesome is because all the sound comes from one point, which means when you do your imaging/staging/aiming portion of your install, you'll have a much easier time. You don't have to worry about weird rainbow effects (highs sound like they are up high like head level, but mids sound like they are at your feet).

Going with less speakers also reduces the amount of crossovers you need. Having good crossover(s) makes for about 60% of the total install quality in my opinion. Even more important than enclosures designs, quality drivers, and sound deadening.

So, if you can limit how many speakers you run, you make your install easier. The simplest answer possible is always the most reliable one, and usually the best overall.

Because of the current limitations of speakers, there are some problems introduced however.

The higher the frequency a speaker plays, the more directional it becomes. Being very directional isn't a problem, UNLESS your speakers aren't aimed at your head. If they are aimed some other place, then you will have dips in your frequency response

Another issue with having speakers play most of the frequencies is that it requires a voice coil with a very low LE (which is hard to do and still have good power handling).

Another is that it requires more linear movement (x-max) from the driver. Without a linear motor, a speaker will start to distort very quickly. Multiple linear motor technologies have been around in subs for over 10years, in fact there are a few that have been around a very long time. However, they usually jack up the price of the speaker and thus aren't widespread. There are also some technologies that only work for subs, whereas there are some that have even been used in mids & tweets. The more frequencies you require a speaker to play, the harder it has to work... Linear motors allow speakers to play more frequencies at once before distortion sets in.



So, why would you want your tweets to play low.... well, SQcomp I believe is trying to stay away from that. "Low" for a tweet would be playing anything below 5khz. Normal crossover points for a 6.5" component set would be 2khz-5khz (usually in the 2.5-3khz area tho).

In some installs however, if you can get your tweet to play low enough you can limit how many speakers you have, and still be able to have a very good frequency response in a system that is able to get loud before distorting.

Take a look at HLCD's or compression drivers.... there are the tweets used in club speakers. There are a few of them used in car audio. They are generally able to play around 800hz up to about 16khz... All you really need is a mid with a fairly strong midbass, and a sub, a band of eq around 18-20khz and you are set.


It all comes down to getting the fequency response desired, and the staging/imagine you want. And limiting the amount & complexity of your crossover(s) has a huge impact on how hard of a job you'll have.

[sqcomp]

*

[JBougie]

I so wish I had 1/1000th of your knowledge about audio when piecing my system together .... lol

[sqcomp]

*

[goku87]

Originally Posted by sqcomp

Bite into that one AM! Which ones am I looking at? :D

I guessed the sub. His turn lol

[sqcomp]

*

[derickveliz2]

.

I though I knew it all! LOL

(o:

[sqcomp]

*

[derickveliz2]

Originally Posted by sqcomp

Derick,To answer your first question about trial and error, the answer is "sometimes". It depends on what we're doing. I know what has worked in the past for me, I know the general fundamentals. This is where my need for more experience leads me to try other things and lean on the experience of the shop owners who have been doing this since I started in the early 90's.

Thanks, spcomp!

I've been reading the owners manual for the DEX-P99RS, I think it's going to be a "RELIGIOUS EXPERIENCE" for me, I can't wait.




D.

[goku87]

You're killing me with the lack of pictures...

[sqcomp]

*

[talnlnky]

Originally Posted by sqcomp

Seriously though, I have a lot of pictures. All three amps are up, by the end of today they should be powered. I'm waiting on the quote for the Audison Thesis Violino tweeters (yes, I gave it away), and my flippin' mix on the fleece was to cold. It's still kicking 12 hours later.

Realistically today, there will be power to all the amps, and answer for the replacement tweeters, the kicks should be ready to be started, and the backup sensors *should* be done.

Edit:

The ground point for the 4.5 "stripped out" when I attached all three grounds. In the pictures I'll put on tonight you'll notice that I made a new ground bolt from the outside in...like we did at Freightliner oh so long ago.

I never trusted self tapping screws, I always did the nut/bolt routine for grounds. Are you going to mix up some more resin nice and hot and lay it over the top of your cold mix to heat it up?. Nothing worse than cold resin.

[sqcomp]

*

[goku87]

Mwahahahaha, excellent stuff. It's coming together really really well.

[sqcomp]

*

[derickveliz2]

Lets see!!!!

[sqcomp]

*

[derickveliz2]

.
W O W . . .

If I could just do something like that
.