bl sq?

[profundus-sanus 5]

more or less i'm just interested in how bl's sound.

I ran a 15" q in 4 cubes @ 29hz for about 5 months and loved it, just wasn't loud enough. I bought a btl 12 about a month ago and frankly i think it sounds like crap. Its in this

My buddies mt of an xx-herc has the same sound quality to it so i figured its just the way the sub is. Just sounds distorted and almost sloppy.

An hk4000 was ran for the most part on both setups(i ran an opti2000d for about 1 month on the q) and will be with the new one.

So i want to see if bl's would sound significantly better than the btl's.

Wanna do a pair of loaded 15's in 8 cubes net @ 30hz w/ 4 6" pvc ports in the backseat of my chrysler sebring coupe.

Edited August 12, 2007 by profundus-sanus

[Fi Car Audio 64]

I will leave this one to others to comment on. I like the Qs sound and their output is normally great for their rated power. With the power you are wanting to use, it is beyond the Q. As for the BTL sounding like crap... I havent heard or noticed that... but I value others opinions more than my own given that they are paying customers and I seem to own things

Im sure others will chime in shortly.

As for the box, whats the specs on it?

BLs would work fine in the 8 cuft setup for sure.

[UNIT 6639 0]

Well, I dont have a 15" but my BL sounds great, I am not really an SQ guy but its nice to have good sound quality, the BL does not sound bad at all to me, I have and have had plenty of SQ subs, even ones with the legendary XBL tech.

I am very please with my BL to say the least!

What options are on your BTL? I would really love to try a BTL, ecspecially now that I have the power requirements for one!

[profundus-sanus 5]

I will leave this one to others to comment on. I like the Qs sound and their output is normally great for their rated power. With the power you are wanting to use, it is beyond the Q. As for the BTL sounding like crap... I havent heard or noticed that... but I value others opinions more than my own given that they are paying customers and I seem to own things

Im sure others will chime in shortly.

As for the box, whats the specs on it?

BLs would work fine in the 8 cuft setup for sure.

i noticed very few people saying that they didn't like how the btl sound so maybe something isn't right. I will try it in another box to see...1.75@33 W/20" of port, something i have lying around. Realistically i'd much rather run btl's due to the planned nature of this install, doubling as a db drag setup as well.

Well, I dont have a 15" but my BL sounds great, I am not really an SQ guy but its nice to have good sound quality, the BL does not sound bad at all to me, I have and have had plenty of SQ subs, even ones with the legendary XBL tech.

I am very please with my BL to say the least!

What options are on your BTL? I would really love to try a BTL, ecspecially now that I have the power requirements for one!

thats really what i was looking for. Someone thats used several subs and knows what a good sounding sub sounds like.

my btl is loaded. I'll try the it in a different enclosure just to make sure its not this one. That one from ttb is 1.5 cubes w/ 75 square inches of "port". I believe its their transmission line/ported hybrid.

Edited August 13, 2007 by profundus-sanus

[UNIT 6639 0]

Yea, I have had quite a few different brands of subs, not as many as some of us here, but quite a few, from complete junk to high quality stuff.

Ascendant and Fi happen to be my 2 fave sub brands. Yea, give your BTL another look before you dump on it

[profundus-sanus 5]

i tried the btl and in the other box today...although output dropped significantly it sounds much better...Sounds fine as long as your head isn't right next to the woofer.

I won't hold ttb responsible for that as my construction of it was questionable.

Now i'm debating buying devin's (gmonk) pair of btl 18's that he has left.

[jmenace 0]

i wish i had the room to put 2 18btl in my car i would in a hurry lol so areyou still gonna try out the BL or is the BTL up to satifaction now

[profundus-sanus 5]

i'm going to listen to the btl 12 for a bit in the box its in now and see.

It'll be one or the other.

[JimJ 11]

Simple solution...get another Q

[profundus-sanus 5]

Simple solution...get another Q

thought about it but its too late now. Already sold it.

[Fi Car Audio 64]

The BTLs do not inherently sound "bad" as they are an SPL sub. I havent a clue what is going on in some of the TTB boxes I have seen. Most seem to work rather well and are efficient, but some of the odd ones would look to be more picky about Qts and Vas for a given size like a horn or TL would be (especially when they are hybrids of them).

At least you have heard a change with the one you have in a different enclosure.

Are you thinking of upping the size as well?

[profundus-sanus 5]

The BTLs do not inherently sound "bad" as they are an SPL sub. I havent a clue what is going on in some of the TTB boxes I have seen. Most seem to work rather well and are efficient, but some of the odd ones would look to be more picky about Qts and Vas for a given size like a horn or TL would be (especially when they are hybrids of them).

At least you have heard a change with the one you have in a different enclosure.

Are you thinking of upping the size as well?

i'm thinking about buying galacticmonkey's 18's and reconing them.

Just depends on whether i can gather the money before he sells them or not.

[Fi Car Audio 64]

Definitely a huge step up from a sinlge 12 BTL (or even the Q15) to a pair of 18s. Do you have the space for them?

[profundus-sanus 5]

Definitely a huge step up from a sinlge 12 BTL (or even the Q15) to a pair of 18s. Do you have the space for them?

from what i figure i can sqeeze 10 cubes net w/ 140 sq in of port @ 32hz. That'll be a single layer of 13 ply birch with some fiberglass and a bracing as needed.

I decided i want to quit screwing around with that trunk..... or small setups for that matter.

Now i'll just have to find an amp... And some recones

[Fi Car Audio 64]

Recones isnt an issue

What do you have electrical wise to power everything?

10 cuft at 32 will be a bottom end monster with loaded BTLs. Make sure the amps you get have an adjustable subsonic (most do, but even some of the popular big amps have set filters that are to low and shallow to be really useful).

Thanks,

Scott

[///M5 2,833]

With the 4000 asking about SQ is a bit off base. SQ is not just driver related but install and MOST importantly a function of how well your subs blend with your front stage. There is no way in hell with that box, that amp, and any front stage that SQ comes into the equation at all here...not even close.

If you are asking if the BL is a fart cannon, of course it isn't as long as you put it in a box that doesn't turn it into one.

[JoshHd6 0]

With the 4000 asking about SQ is a bit off base. SQ is not just driver related but install and MOST importantly a function of how well your subs blend with your front stage. There is no way in hell with that box, that amp, and any front stage that SQ comes into the equation at all here...not even close.

If you are asking if the BL is a fart cannon, of course it isn't as long as you put it in a box that doesn't turn it into one.

LOVE UR SIG EVERYTIME I SEE IT

[profundus-sanus 5]

i currently have an hc2400 under the hood, a 140 amp alternator, 2 runs of kicker hyperflex 1/0 to the back, and hyperflex 1/0 for the big three. I get about .3 volt drop with the it at full wang (set to 3400 @ 2 with a -3 db tone) I'll be doing another run of 1/0 to the back and adding an hc1800 for under the hood then move the big boy to the back(it really doesn't fit in there anyway was to comply with street class rules tho). I also am going to look and see if a local shop can up the output of my current alternator and how much.

As for the sq of the hk4000...i'm aware it sounds like chit.. i got it for 300 bucks shipped and was running a cheap high current low voltage amp at the time.... seemed like an okay upgrade.

I'll be looking for something much better soon. Any suggestions for 6kw @ 2 ohms?(other than the a6000gti....i wish i could afford that thing.)

When i speak of sq, i'm asking how is the sound quality of said component, not is this a sound quality dedicated component. If you look at another way then we can agree to disagree. f

Edited August 16, 2007 by profundus-sanus

[///M5 2,833]

You missed the point completely. I wasn't ripping on your amp and you won't see me EVER use SQ to describe amps. My point was with that much power it is completely pointless to use the term SQ. Let me put it this way, with that much sub power you will have no SQ no matter what as your front stage will not seamlessly blend with your sub. By definition SQ is for a system, not a component and they cannot be separated and in your case you are going to have overpowering bass no matter what.

[profundus-sanus 5]

You missed the point completely. I wasn't ripping on your amp and you won't see me EVER use SQ to describe amps. My point was with that much power it is completely pointless to use the term SQ. Let me put it this way, with that much sub power you will have no SQ no matter what as your front stage will not seamlessly blend with your sub. By definition SQ is for a system, not a component and they cannot be separated and in your case you are going to have overpowering bass no matter what.

i got your point.... you cant talk about sound quality unless your talking about flat response.

I think of it a different way....

if i'm saying it the wrong way then why don't you tell me how to fix it...not just tell me i'm wrong.

Edited August 17, 2007 by profundus-sanus

[profundus-sanus 5]

so its pretty definite that i'm getting the btl's.

i need help with box specs... i want it to play pretty well flat from 60-25 or so. Just so you don't have to read back through its for 2 18" btl's in the back seat of a sebring coupe. I was thinking like 10 net @ 30-32 hz. Largest i can fit is 10 net w/ 113 sq inches of port tuned to 30. Firing both subs and port forward with the port in the middle of the subs was my best guess for phase alignment.

Also, how do you think triple spiders would help on efficiency? The subs won't ever see more than 3kw a piece @ 2 ohms, subs are loaded. Or do you think the suspension would be too soft to control cone movement?

[Fi Car Audio 64]

10 cuft net tuned to 30-32 would be great. I like the low tuned BTL setups. People really are amazed at what an "SPL" sub can do down low and how good they actually sound.

As far as 3 spiders... with 3kW each, Id stick to the standard setup. At best, going for 5-6 of the softer spiders, but not the original 3 stiffer ones (although 3kW is a fair amount of power and Id still rather see the original spider pack on it). I like the extra bonding area of more spiders on the former.

Please let me know if I can help with anything else.

Thanks,

Scott

[profundus-sanus 5]

i really appreciate your help alot scott.

I'll just stick with the standard spider pack. I'll be running an interchangable port for when i do spl comps so i'm sure the stiffer spiders would help for that anyway.

I put the btl 12 in my girlfriends car, replacing a power acoustik fubar. I might just leave it in there, she loves how it sounds compared to the pa, so thats really saying something. Its much more impactful and authoritative and just sounds all around great. Almost too much, and only off 900 watts.

Edited August 22, 2007 by profundus-sanus