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Old 03-19-2011, 08:39 PM   #1
f575gtc
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Default Help installing Bazooka Tube

I purchased a 10 inch 250 watt self powered bazooka tube for the car because I had heard them before and they were really powerful for what I want, the thing is I ran the install to the rear speakers off the harness and the tube has very little bass nothing compared to what I had heard.

if I turn up the bass on the radio and sub and fade the speakers to the rear I get alot more bass but still not what I was expecting.

Is this an issue with the factory radio? that it doesn't allow as much power through the rear speakers? even then though the sub should amplify it.

if so how does the Kicker 10 inch sub they released for 2011 work?

I have a 2011 STI non navi unit btw.

any input here?
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Old 03-19-2011, 08:54 PM   #2
863JOE
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Ok, my first question is are you using a Line out converter for the RCA's to hook into?
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Old 03-19-2011, 09:09 PM   #3
f575gtc
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I am not using the RCAs I am using plain speaker wire to go into the left and right rear speakers on the harness back to the grey/green connectors on the sub, it has both RCA and plain speaker wire connections.
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Old 03-19-2011, 09:14 PM   #4
863JOE
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Ok, I strongly recommend the use of a line out converter. The line out converter taps into a speaker of your choice, plus you can amplify the signal on the converter with it's gain controls. The reason you're getting bad and little sound is the bazooka tube is most likely getting a weak signal from the speaker alone. Go to your local audio shop and ask them for a Scosche LOC80.

http://ak.buy.com/PI/0/500/90119264.jpg

That, SHOULD do the trick. There are other possibilities, but from what you're describing I think this is your solution.
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Old 03-19-2011, 09:27 PM   #5
f575gtc
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what I do not understand is the amp on the tube should be doing this no?

I have a direct wire from the radio to the sub and the sub has its own gains and xover built into the amp on it.

if I install the converter you mentioned it would just tweak the already weak signal I am getting.

something has to be up here, I looked at the kicker 10 inch by Subaru and its basically the same thing a harness so you don't have to tap into the wires and regular line wires to the back of the sub where it plugs into its built in amp.

I appreciate the advise though.
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Old 03-21-2011, 01:11 PM   #6
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Quote:
Originally Posted by 863JOE View Post
Ok, I strongly recommend the use of a line out converter. The line out converter taps into a speaker of your choice, plus you can amplify the signal on the converter with it's gain controls. The reason you're getting bad and little sound is the bazooka tube is most likely getting a weak signal from the speaker alone. Go to your local audio shop and ask them for a Scosche LOC80.

http://ak.buy.com/PI/0/500/90119264.jpg

That, SHOULD do the trick. There are other possibilities, but from what you're describing I think this is your solution.
The tubes have a built in converter.
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Old 03-19-2011, 09:44 PM   #7
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OT, but you ever cruise through monroe? pretty sure ive seen your car a few times haha
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Old 03-19-2011, 09:47 PM   #8
f575gtc
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sometimes on weekends.
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Old 03-19-2011, 09:51 PM   #9
863JOE
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You're missing what I'm saying. Your RCA's pretty much " send music " to the amp to play. RCA's also carry voltage, when you have low voltage in your RCA's it will affect your sound significantly. Your amp CAN boost the RCA signal, but it will give a unclean and distorted signal for your sub to play and will sound bad. The LOC will boost the signal from the source so you will be getting a clean signal to begin with, then the bazooka tube amp will only have to worry about powering the sub so to speak since it isn't trying to push a sub while boost a weak RCA signal.
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Old 03-20-2011, 12:41 AM   #10
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Ok so after speaking to Bazooka it sounds like the sub is "out of phase"

meaning both channels are canceling each other out and I was advised to reverse the polarity on one of the channels


ok great, but won't that blow out the sub?
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Old 03-20-2011, 01:46 PM   #11
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Line converter wont help either. Your problem is that the OEM hu doesn't turn up bass with volume. It pulls bass to protect the speakers. You need a processor, JL cleansweep or MTX RE-Q5. Those will even out the EQ so your bass volume will increase proportionally.
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Old 03-20-2011, 01:53 PM   #12
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On my old 2.5i, I had a Boss 8" under-seat amplified sub with the stock head unit. I used a LOC to tie into the rear speakers and set the gain on it to the middle setting; the sub sounded great (for what it is). My current car came with the stock HU and a set of 2 12" subs in the trunk, also running through a LOC tied into the rear speakers. Sounded very loud....too loud for my tastes actually. I don't think you need a sound processor to run a basic bazooka tube setup, just get a LOC for <$20 online and see if it helps. I got mine for like $16 on ebay for my old car.
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Old 03-20-2011, 02:07 PM   #13
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sounds like the sound coming to the rear speakers are already filtering out sub frequencies.

If the cd player has a sub out function (but you just don't have the factory sub), I'd use that output to tap into.

or

try tapping into the front speakers (if they play more bass then the rears this could be better).
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Old 03-20-2011, 02:23 PM   #14
f575gtc
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you are right, the fronts are definitely more "bassy" than the rear, could it be that the built in amp on the radio filters bass to the rear so they don't have as much power?

also something very odd, I checked the sub to make sure it was in phase and it wasn't so I fixed that but the bass didn't improve, what was going on though every time I increased the volume past 35 on the radio the audio would cut out, I biased the speakers to the rear +4 and it stopped.

and the bass POUNDS at 40 which is the max, but at 25-30 where I usually listen it's just not there, I wonder if I should have gone to the front speakers to begin with.

teiva-boy I know what you are saying, I have seen that in factory radios with a built in sub, at max volume the bass is REALLY present and it was shaking my mirrors where I couldn't see out of them, so I don't think the factory impreza radio does that.
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Old 03-21-2011, 11:04 AM   #15
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can anyone confirm that the front speakers are white/black - blue/orange for the left and green/ brown - green/ yellow for the right?
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Old 03-20-2011, 02:21 PM   #16
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Some factory units also as the volume is turned up, the loudness setting is lowered. factory EQ'ing is a tricky beast.
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Old 03-21-2011, 12:13 PM   #17
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Look on the speakers, they should still have a + and -
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Old 03-21-2011, 12:21 PM   #18
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get rid of the factory HU and get an after market with RCA's out , and an Ipod interface... much better imo ...
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Old 03-21-2011, 12:57 PM   #19
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Quote:
Originally Posted by f575gtc View Post
I purchased a 10 inch 250 watt self powered bazooka tube for the car because I had heard them before and they were really powerful for what I want, the thing is I ran the install to the rear speakers off the harness and the tube has very little bass nothing compared to what I had heard.

if I turn up the bass on the radio and sub and fade the speakers to the rear I get alot more bass but still not what I was expecting.

Is this an issue with the factory radio? that it doesn't allow as much power through the rear speakers? even then though the sub should amplify it.

if so how does the Kicker 10 inch sub they released for 2011 work?

I have a 2011 STI non navi unit btw.

any input here?
Connect your sub to your front speaker outputs and see what happens...

You do not need a LOC, the tube has both RCA and speaker level inputs..
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Old 03-21-2011, 01:03 PM   #20
f575gtc
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I fixed it! woot now I have some bass!

for anyone thinking of doing a bazooka tube use the front speakers not the rear

we got a nice 3 inches of snow here in CT today and all the bass cleaned the snow right off the car!
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Old 03-21-2011, 01:08 PM   #21
Aaron'z 2.5RS
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Fixed due to my post? or fixed because you where switching the wires as I typed out my post?

Good show man, I knew it was simple... SOMETIMES, the forum can't see the forest for the trees...
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Old 03-21-2011, 01:29 PM   #22
mdecker79
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I just installed the 10" 250 tube this weekend and had the same issue. We jumped off the rear and had like zero bass. Figured out that the stock HU is only sending mids and highs to the rear for some reason. Re tapped off the fronts and it hits hard.

I have a clarion cx501 on order and will be installing it next week or so.
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Old 03-21-2011, 01:43 PM   #23
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OP..

Where did you mount yours?


I pulled the floor carpet back right as it goes up and mounted mine sideways against the rear seat. The straps screw right into the metal there and looks great. Then when I let the floor carpet go back it creates its own wall so to say which just looks like the trunk and it totally covers the tube. You can't even see it with the trunk open.
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Old 03-21-2011, 02:01 PM   #24
f575gtc
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I mounted mine with its back up against the rear seats and the front sub part towards the hatch door

it fits in there perfectly front to back also I have a bungie net in the back that holds in in place and used the strap it came with to loop it to the other net hooks in the car it doesn't slide anywhere.

I only read your post now, sorry. I spoke with Bazooka yesterday on the forums and they told me to go off the front speakers instead its where they recommend it

and yes for a 10 inch 250watt sub it hits VERY hard!

now even at 15 volume I have good bass at 30+ my side mirrors vibrate

Last edited by f575gtc; 03-21-2011 at 02:47 PM.
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Old 11-19-2012, 01:02 PM   #25
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Did you use a Line output converter or the sub harness to get RCAs for your tubes?
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