Posts by wash
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Joined
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908 Posts
If your speakers are 3.6 ohm, that sounds perfectly normal for car audio but "pushing 3.6 ohms" is a statement that means nothing.
Your geek is bunk.
A couple of my geeks graduated from the Stanford university electronic music program (more about electronics than music) so brain surgery on a factory head unit is one of the less challenging things they can do.
Pro tip: good geeks don't work at big box stores.
Your geek is bunk.
A couple of my geeks graduated from the Stanford university electronic music program (more about electronics than music) so brain surgery on a factory head unit is one of the less challenging things they can do.
Pro tip: good geeks don't work at big box stores.
Joined
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908 Posts
First, look at what you are trying to do and what you're using to do it.
From what I've seen Bazookas are low cost all-in-one subwoofers and that means that they work OK in certain situations and not so well in others.
First read the manual to see what it has but I imagine it has a circuit designed to shift a speaker level signal to line level, then an opamp "preamplifier" used to buffer the signal and adjust gain, then finally an amplifier and speaker. There may be an RCA jack to feed a line level signal directly to the pre-amp but maybe not.
Again read the manual to be sure.
Next figure out what the problem is. It could be crummy electronics in the level shifting circuit or an incorrect installation.
If the electronics are not suitable for your application, you need to reverse engineer it and fix it. That's out of my depth but that's what some geeks are really good at. The alternative is to find something with electronics that will work, if your sub has an RCA jack, you could buy a box that does the level shifting but then you need to understand the problem and buy something that will work.
If its an installation issue, just install it correctly.
Lastly, I think Kicker made or was going to make a drop in Fiesta sub. I suggest finding a copy of their instruction manual to see how theirs works and is installed. Some times generic instructions miss the details on some OEM car stereos.
From what I've seen Bazookas are low cost all-in-one subwoofers and that means that they work OK in certain situations and not so well in others.
First read the manual to see what it has but I imagine it has a circuit designed to shift a speaker level signal to line level, then an opamp "preamplifier" used to buffer the signal and adjust gain, then finally an amplifier and speaker. There may be an RCA jack to feed a line level signal directly to the pre-amp but maybe not.
Again read the manual to be sure.
Next figure out what the problem is. It could be crummy electronics in the level shifting circuit or an incorrect installation.
If the electronics are not suitable for your application, you need to reverse engineer it and fix it. That's out of my depth but that's what some geeks are really good at. The alternative is to find something with electronics that will work, if your sub has an RCA jack, you could buy a box that does the level shifting but then you need to understand the problem and buy something that will work.
If its an installation issue, just install it correctly.
Lastly, I think Kicker made or was going to make a drop in Fiesta sub. I suggest finding a copy of their instruction manual to see how theirs works and is installed. Some times generic instructions miss the details on some OEM car stereos.
Joined
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908 Posts
That sounds like the line you tapped off of has some compression circuit or something.
If there was a schematic diagram for the speakers and crossovers I might be able to figure out a good place to try hooking in your line level converter but I don't know what is in there.
If there was a schematic diagram for the speakers and crossovers I might be able to figure out a good place to try hooking in your line level converter but I don't know what is in there.
Joined
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908 Posts
Yeah, the signal is equalized, possibly with a compression circuit before the amplifier that drives the speaker wires you are tapping off of.
Subwoofers usually use a straight line level out and the sub amp has its own equalization to damp the resonant peak and occasionally to correct for cabin gain.
What you need is to find a signal with as little done to it as possible (at least in the frequency range you need). Try tapping off a small midrange speaker or tweeter.
Subwoofers usually use a straight line level out and the sub amp has its own equalization to damp the resonant peak and occasionally to correct for cabin gain.
What you need is to find a signal with as little done to it as possible (at least in the frequency range you need). Try tapping off a small midrange speaker or tweeter.
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