Bose Speaker boxes
Thread Starter
Racer
Joined: Sep 2005
Posts: 304
Likes: 1
From: Carson City Nevada
Bose Speaker boxes
Hi guys, I know this topic has probably been beaten to death over the years, but I couldn't find anything on it. My 86 had a Bose system in it at some point. The rear speakers were replaced with 6x9's. The sound quality is good but there is a very limited bass range. Seems like all the low end is missing. The speakers are very nice Alpine's and should respond down in the 80hz range. Now the question is, is it the original Bose boxes they are mounted in? I know the box itself is very small and designed for a small speaker. Has anyone done any mods to them to improve the low end? Like punch out the back or pop a 1 1/2 tube in the front?
Thread Starter
Racer
Joined: Sep 2005
Posts: 304
Likes: 1
From: Carson City Nevada
It's an aftermarket head unit. Good thought. I will check polarity on the speakers. I know it is good at the head unit because I just replaced it.
Melting Slicks
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
never seen any head unit that could adequately drive deep bass; just not enough power.
I run 8" in, essentially stock site with plenty of bass, but they're driven by a conservatively rated 100wpc separate amp.
speaker wires must be in polarity; in phase: + to +; - to -.
I run 8" in, essentially stock site with plenty of bass, but they're driven by a conservatively rated 100wpc separate amp.
speaker wires must be in polarity; in phase: + to +; - to -.
Thread Starter
Racer
Joined: Sep 2005
Posts: 304
Likes: 1
From: Carson City Nevada
I am not looking for a boom box in my car....Just a decent sound system. For me a good set of 6x9's work under normal circumstances. These just sound like the lower spectrum is missing. I will check the polarity this weekend. If that don't do it, I will try opening up the boxes a bit and see what happens. I will post results.
Melting Slicks
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
Not sure who mentioned boom box. An properly designed speaker includes an enclosure that accommodates a particular transducer. It may be sealed or ported in addition to optimum enclosure volume. Very few aftermarket mobile speakers address this and I applaud your asking others what worked.
Having learned decades ago that 'high' in high fidelity does not refer to volume, or BOOM, I also appreciate tight, filling bass response. The small car interior is detrimental to low bass, as there is insufficient room for the long wavelengths.
Just as strong muscles can control a heavy hammer, a high power amplifier controls the diaphragm's movement, decreasing distortion and boomy bass, while supplementing the low end and protecting itself from excessive back current. The enclosure also allows a proper amount of speaker stiffness, but is a very complicated issue.
I suspect you will find you find a need for more clean power for those 6x9s for these reasons as the simplest solution to quality, not boomy bass.
Having learned decades ago that 'high' in high fidelity does not refer to volume, or BOOM, I also appreciate tight, filling bass response. The small car interior is detrimental to low bass, as there is insufficient room for the long wavelengths.
Just as strong muscles can control a heavy hammer, a high power amplifier controls the diaphragm's movement, decreasing distortion and boomy bass, while supplementing the low end and protecting itself from excessive back current. The enclosure also allows a proper amount of speaker stiffness, but is a very complicated issue.
I suspect you will find you find a need for more clean power for those 6x9s for these reasons as the simplest solution to quality, not boomy bass.
Thread Starter
Racer
Joined: Sep 2005
Posts: 304
Likes: 1
From: Carson City Nevada
Not sure who mentioned boom box. An properly designed speaker includes an enclosure that accommodates a particular transducer. It may be sealed or ported in addition to optimum enclosure volume. Very few aftermarket mobile speakers address this and I applaud your asking others what worked.
Having learned decades ago that 'high' in high fidelity does not refer to volume, or BOOM, I also appreciate tight, filling bass response. The small car interior is detrimental to low bass, as there is insufficient room for the long wavelengths.
Just as strong muscles can control a heavy hammer, a high power amplifier controls the diaphragm's movement, decreasing distortion and boomy bass, while supplementing the low end and protecting itself from excessive back current. The enclosure also allows a proper amount of speaker stiffness, but is a very complicated issue.
I suspect you will find you find a need for more clean power for those 6x9s for these reasons as the simplest solution to quality, not boomy bass.
Having learned decades ago that 'high' in high fidelity does not refer to volume, or BOOM, I also appreciate tight, filling bass response. The small car interior is detrimental to low bass, as there is insufficient room for the long wavelengths.
Just as strong muscles can control a heavy hammer, a high power amplifier controls the diaphragm's movement, decreasing distortion and boomy bass, while supplementing the low end and protecting itself from excessive back current. The enclosure also allows a proper amount of speaker stiffness, but is a very complicated issue.
I suspect you will find you find a need for more clean power for those 6x9s for these reasons as the simplest solution to quality, not boomy bass.
Well now that you put it that way, maybe I will give it a little extra boost and see what happens.
Thanks for the input.
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Thread Starter
Racer
Joined: Sep 2005
Posts: 304
Likes: 1
From: Carson City Nevada
Thread Starter
Racer
Joined: Sep 2005
Posts: 304
Likes: 1
From: Carson City Nevada
Ok, here is what I found so far. The passenger side had the polarity reversed. Correcting this problem fixed the low end spectrum considerably. I still think there might be something wrong with the wiring though. When I use the balance to mover from side to side, both sides drop in volume but both are still playing. Looks like they used the factory wiring for the speakers. Does the factory Bose wiring share a ground?