The 300ZX Audio and Interior Page
Also check out the 300ZX
05/98 - I finally
put some more info and photos online...
Please email me (email@example.com) if you have any comments, suggestions,
The Original Bose SystemRead The Bose FAQ and
you'll find some interesting opinions about Bose systems, their reputations,
etc. This is a popular FAQ for home audio enthusiasts, but much of what is
discussed applies to the car systems as well.
The 91+ bose systems used
four 3.5" speakers, one in each corner. The 90 system had 3.5"
in the front, and 6" in the rear. The bass response is about the same out of
each of them. There is a relay in the passenger-dashboard area that turns on the
amps in each speaker housing.
Here's my opinion on the bose Bose system:
It's overpriced, overengineered, and gimmicky. The head unit (tape
deck/radio) is manufactured by Clarion. Each speaker (one in each door, two in
the hatch area) is built into a large injection molded plastic enclosure. Each
enclosure not only houses a speaker, but also a seperate amplifier! As far as I
know, Bose themselves make the speakers, which I *think* are very similar to
those found in the Bose 101s/901s, etc. It doesn't sound bad
but it could certainly sound better.
The optional CD player is made by
Sony. It plugs into the Bose/Clarion tape deck via a 5 pin connector for 90-91,
or in 92 I heard they changed to an 8 pin connector.
If you didn't have
the CD player, you might have gotten the Bose "center channel" -- a passive
speaker that pretty much works like magic, sucking a little bit of the signal
off both the left and right door speakers. Contrary to what Bose may have you
believe, this is not really a "good" idea in terms of accoustics. It is a neat
The Bose setups in Nissans in general are
NOTORIOUS for failing early. They are poorly made. If you have a single
speaker that has stopped working, and you'd rather not spend a fortune on
replacing the whole system, you can get a dealer to send your speaker in to be
The following information was provided by Steve at Courtesy Nissan on costs for
You can take any individual component into a
nissan dealer, and they will send it back to the original manufacturer, who will
replace it with a refurbished (previously broken but repaired and reconditioned)
part. The process takes 4 to 6 weeks, and the replacement part has a 1 year
warranty. Courtesy Nissan's prices for the service are as follows:
You may have noticed -- this isn't
cheap! If you're determined to keep the stock system, I'd suggest looking
around for someone who has upgraded their system, and will sell you an old
speaker assembly for a reasonable price. The speaker/amp/housing combos seem to
sell for anywhere from $50-$100 used.
- AM/FM Cassette $145.00
- Single CD $175.00
- Multi CD $225.00
- Bose Speaker $155.00
Should you Replace it?If you want better sound quality, then
yes, by all means, replace the BOSE system. Unfortunately, it's
a job that's easier said than done. Because of the propriatary design used by
Bose (the amplifiers attached to each speaker), it is very time consuming and/or
expensive to replace.
If you put $700 into a stereo, you would
foolish to spend less than $200 on an alarm. I would never own an expensive
aftermarket stereo without protecting it.
Your best choice, if
you have the money (and expect this to cost between $600-$2600) is to replace
the entire setup. This can be broken down into five main components:
- The Head Unit
- Front Speakers
- Rear Speakers
- Amplfiers (optional)
- Subwoofer (really optional)
- Update - There are now a number of aftermarket adapters available to
let you upgrade the head unit or speakers seperately. IE you can buy that
Kenwood CD player you've been lusting after, and use it with your stock Bose
speakers. This is the easiest and most cost effective way to upgrade your
system. However, the bose speakers are still the weak point in the audio chain,
and will give you trouble down the road. For that reason, I still think the best
plan is to upgrade everything - but if you just want to be able to play CDs in
your Z, upgrade the head unit, get one of the adapters, and you're set.
The Head UnitLuckliy, the Bose/Clarion head unit is a standard "DIN"
size. This means that nearly any radio will fit in with only a minimum of
effort. There are a number of good offerings in any price range. If you are
trying to keep costs down, you will want a head unit that has a built-in
amplifier (this is the normal way to do it). Try to get one that offers at least
18 watts per channel, which you'll usually see designated as "18x4" for 4
speakers. Avoid head units which only provide 2 channels of amplification -
you'll regret it down the road. If you plan on ever expanding the system, you
may want to consider investing in a head unit that has "RCA outputs" which will
make it easier to add an external amplifier later. Again, if you're happy with
the Bose speakers in your car, you can get a new head unit along with an
adapter, and hook it right in.
The speakersThis is a tricky subject. Because of the BOSE design, when
you change the head unit, it's definately in your best interest to change out
all 4 speakers as well. The "problem" with the bose system lies mostly in the
speakers. HOWEVER - if you want to replace just one half of the system (either
the head unit -or- the speakers, but not both) there are now a number of
aftermarket "converters" available. I'd recommend calling Crutchfield and asking them what they
have available to help you out.
When you remove the Bose speakers, what
you'll actually be taking out are four large black plastic enclosures. Each one
weighs about 8 pounds, and takes up quite a bit of space.
In short, when
you take the speakers out, what you're left with are huge gaping holes in your
car. To mount new speakers, wood cutouts must be made, attached where the
enclosures used to be, and then you must mount the new speakers in these
cutouts. Your other option is to go to your nissan dealer and buy the metal
mounting brackets that were standard for the non-bose speaker system. This would
be a great idea, and the next time I take my door panels off, I'm going
to replace my wood cutouts with the stock metal ones. Hopefully they'll seal the
speaker tightly against the door...
When done correctly, it is possible
to replace all the Bose speakers with new 6" or 6.5" drivers. This is probably
the best situation, as it allows you to get good bass response out of speakers
mounted in the factory locations, without compromising sound quality. Note that
without a subwoofer, it is very difficult to get much low bass response out of
your Z. The problem is largely that the car is so well built and padded -- the
car does a very good job of absorbing noise in the cabin.
The first step is
to determine your budget. Plan on spending significantly more
money on front speakers than on rear speakers. If this sounds wrong to you,
think of home stereo setups, which typically use two large, expensive speakers
in front, and either none, or small "ambiance" speakers in the rear. This is how
car audio is supposed to sound as well. The common practice of
setting your fader to deliver equal power to the front and rear speakers isn't
right either - you should be hearing almost all of the sound from the
Since you want the best sound possible out of the front, it is
generally agreed that "component" speakers will sound best. These are speakers
where (just like home audio) the woofer and tweeter are two seperate components.
The woofer will mount behind the BOSE plate at the bottom of the door, and then
you mount the tweeter on the door, or in the side air conditioning vent. (no,
I'm not kidding!) I originally had my component tweeters mounted in the air
vents, because it left the interior looking totally stock. However, after a few
months of this I just wasn't happy with the sound. So one day I got brave and
attacked my door panel with an x-acto knife and a power drill. The results? Some
beautiful flush-mounted tweeters in the door panel. Check out this photo - you
can see the tweeter mounted to the left of the air vent - they really look stock.
So. You can fit a set of component speakers that contain up to a 6.5"
woofer and a 1" tweeter in the door. A wood panel (or factory nissan part) must
be made to contain the woofer, which will fire out through the BOSE grill. (this
way no one can tell what kind of system you have, thus it will be less likely to
get stolen) The tweeter you can mount on the door, the inside of the side
mirror, or in the air vent. Mounting in the air vent really does provide good
sound, and will also increase the "stealth factor" which means it's less likely
that some sleazeball will be walking away with your expensive
If you don't want to spring for component speakers, your next
choice should be a pair of quality "coaxial" ones. These have a tweeter mounted
in the center of the woofer. Again, this is a very good choice for those who
want to retain the stock look. It may not sound QUITE as good as seperates, but
it will be much more unobtrusive. I chose to use coaxials for my rear speakers. The only
possible problem you'll have is if the tweeter sticks out too far from the
woofer, and it may rub against the BOSE grill. I don't have measurements yet for
what will and won't fit, so good luck!
For my install, I chose 6.5"
component speakers in the front, and 6.5" 2-way speakers in the rear. I spent
approximately 70% of my speaker budget on the fronts, and 30% on rears. This is
because, when set up correctly, at least 70% of the sound you hear should come
from the front speakers. The rears should only be used for "ambiance" sound, and
while not having ANY rear speakers leaves a slight deficiency in the sound, they
should play a small role at best.
AmplifiersIf you think you'll need more power (and until you hit at
least 25 watts per channel, more power will definately result in improved sound)
then you can add external amplifiers to your system. If you're thinking of
adding a subwoofer, you definately need an amplifier to power
it. Seperate amplifiers are typically rated just like head units, in watts RMS.
Be careful of "maximum power" ratings, because these give inflated numbers. For
good seperate speakers, you need at least 35 watts per channel RMS. For a
subwoofer, you'll want at least 80 watts. Rear speakers, again, can suffer with
lower power levels. In my setup, I amplified the front speakers and subwoofer,
but left the head unit (rated 25x4) to power the rear speakers alone.
Amplifiers can have either low level or speaker level
inputs. Low level inputs are connected with "RCA" cables, just like home stereo
components. The big advantage to using low level inputs is that the signal is
better preserved. If you already have a head unit with speaker outputs, though,
many amplifiers will allow you to use those as input, which
makes your job of upgrading a little bit easier.
require an input signal (speaker or low level), a power line going directly to
the battery, a solid ground, output to the speakers, and a turn-on lead to the
head unit. As you might imagine, this is an awful lot of work.
However, the benefits are very precise, dynamic sound, and if you're adding a
subwoofer, you probably don't have a choice about the issue.
There are a
number of mounting options for amplifiers. One common place to stick them is
under the driver's or passenger seat. I wouldn't recommend putting one under the
driver's seat, because the electric seat motors could accidentally crush it or
become damaged. However, if you experiment with a phone book, you'll find that
you can fit an awfully big amplifier under the passenger seat. So play around
until you find an object that you can just barely fit, and then go amp-shopping
using those dimentions as a maximum. The passenger seat is easily removed - it is
held in with four large bolts, and lifts right out.
SubwoofersThese days, everyone knows what a subwoofer does. Remember
the bone charring bass that woke you up the other night at 4am? Yup, couldn't
you use that in your Z?
Maybe not. However, even after
you replace your Bose setup, chances are good that you'll still be looking for
more bass in your ride. This can be easily accomplished by adding a subwoofer.
There are many prebuilt options: the "bass tubes" which often come with built-in
amplifiers, cheap rectangular boxes where you drop in your own speakers, and
even some expensive (but very good) models available specifically for the 300zx
hatch from JL Audio. Expect to spend
between $100-$400 for a simple bass tube, but the prefabricated JL jobs will run
you $500-$600, amplfier not included!
Update: I did go out and
put a JL
Stealthbox in my Z, and it was definitely money well spent! The box takes up
about 1/4 of the rear hatch space, but looks absolutely amazing and sounds good
too. It is finished in black vinyl and honestly looks like part of the car. I
can't tell you how many times I've opened my hatch, a friend looks in and goes
"where's the sub?" Even better, the box literally bolts through the bottom of
the trunk, so it would be nearly impossible to steal. Go get one, you won't be
Replacement Procedure Make sure
to read all instructions and check out all applicable photos before attempting
any of this.
The Factory CD PlayerThe factory CD player in the 300ZX is manufactured
by Sony exclusively for Nissan. (or is it Bose? Maybe even Clarion?) In other
words, you can't call up Sony and ask for one. Rumor has it that the player is
out of production, so you'd either have to stumble across one that was sitting
in a dealer's inventory, or buy a used one.
To install the CD player, you
follow the instructions below regarding removal of the head unit. The CD player
bolts in directly under the head unit with very little effort. The 90 and 91 CD
players have a 5 pin DIN connector, and a wiring harness addon that is used to
hook it up to the stock tape deck. The 92 and later ones use an 8 pin connector,
so make sure you try to get a player from the correct year.
have asked me this, and in fact it happened to me when I sold my stock CD player
to someone on the net. WHEN YOU REMOVE YOUR CD player, you'll find that there is
a Y-shaped adapter that connects it to the radio wiring harness. Without this 8"
section of wire, the next person won't be able to install the player in their
car. They can be purchased from Nissan for $15-$20, but if you're taking out
your CD player, you'll never need that wire, so make sure to remove it at the
Removal of the stock head unit is quick and easy. There are
FOUR screws which hold the center dash panel in place. Get a
medium (#2) phillips size screwdriver, and sit down in the driver's seat. At the
top of the center dash panel is a long thin air conditioning vent. Look
carefully at the sides of the vent - the tapered edges are actually plastic caps
that are covering up two screws! Pry them straight outward with your index
finger, but be careful not to let them drop down inside the air vent. You should
have revealed the two upper screws.
Underneath the adjustable A/C vents,
but above the radio, you will see a black metal cover, about .5" tall and 7"
wide. Pry GENTLY outward on this. It *IS* metal, so it is hard to break, but do
be careful. There are two metal spring clips holding it in place. It snaps
straight off - you may need to use a flathead screwdriver, but it doesn't take
too much effort. Thus the other two screws are revealed.
Unscrew these 4
screws. Again, DON'T drop them into the A/C system -- a magnetic screwdriver is
a good investment for this job, "just in case." Put them somewhere safe, such as
the ashtray. At this point, there are just a handful of clips holding the center
panel in place. Pull gently at the top of the panel, near the AC vents. The top
should pop out, and then with a little gentle wiggling back and forth, the
bottom will come out as well. The clock is still attached, so don't pull
too far! You will have just enough room to reach down to the clock and
disconnect the electrical connector. If you can't get it off, you can
alternately unscrew the clock from the plastic center piece.
point, you should have the whole center panel off, and you should have easy
access to the radio. The radio is attached to DIN opening underneath it, which
will either have the center speaker, the CD player, or the "stuff holder"
depending on the options that the car came with from the factory. You will see 4
screws that hold a metal bracket into the car - remove these 4 screws, and the
radio assembly will come out. If you're replacing the head unit entirely, this
wire colors chart will
come in handy.
Removing the Front SpeakersRemoving the front speakers is NOT a job for
the faint of heart. The entire door panel must be removed, and as mentioned
earlier, wooden speaker mounts must be fabricated out of 1/4" or 1/2" wood. You
will accomplish nothing by trying to remove the bose grill in
the door. It is not made to come off, and you can't get to anything important
Instructions for removing the driver's side door panel:
Whew! Break out a 6-pack, because
you're finished. Removal of the passenger side door
panel is almost identical - one exception - there is no "hand pocket" on the
passenger panel. Instead, there's a molded grip, with screws
hidden behind round vinyl covers at both the top and bottom that hold it on.
Take that off, and then follow the other instructions.
- Tools required: Socket set, #2 phillips screwdriver, #3
phillips screwdriver (MAGNETIC RECOMMENDED!), small flathead screwdriver
- First, roll down the driver's side window approximately 6 inches. If you
look at the door from the outside, you should be able to see a round plastic cutout
near the rear of the window track.
- Turn off the ignition, and open the driver's side door. You'll want to set
down a large cloth to kneel on, and also find a safe place to
set the screws you'll remove.
- We will arbitrarily start by removing the upper section of the door, where
the seatbelt attaches.
- First, pry the plastic cover off the upper seatbelt mounting point. This
should come off without much effort, revealing a large bolt.
- Use socket set/adjustable wrench to unscrew this bolt. There will be 4
or 5 washers that will come off with it. They will not fall
off, so don't worry about them.
- When you are done, allow the seatbelt to retract into the door - the
bolt will stop it safely.
- Now go around to the outside of the door. You will see that the circular
cutout (opposite the side where the seatbelt mounted) has a "flat spot" on
one side. Use your flat screwdriver to pry the plastic plug out at this
point. It should snap off easily.
- Look into the hole. You should see a small screw or possibly a bolt
head, which is holding the inside door piece in place. Remove this
screw/bolt, and be VERY careful not to drop it into the door.
- Once that screw is removed, the very topmost part of the door panel
should be loose. pull on it gently, and two metal snap-clips at the bottom
will come out, and the 3" by 8" section of door panel will be free. Put it
in the hatch for safe-keeping.
- Next we will focus on taking off the large section of the door panel
- Taking off the top section should have revealed two screws which hold
the big panel in place. Remove them.
- The molded plastic assembly that contains the window controls and the
"hand grip" is all one piece. There should be black (?) carpeting at the
bottom of the "hand grip" hole. Use your flathead screwdriver to
lift up the carpeting at both of the edges down in the
little hand hole. Yes, there are two screws hidden
down there. Remove them. Lift up on that edge, and you'll sense resistance
from the upper edge, by the stenciling that says "window controls" ... slide
a small flat screwdriver into the upper edge, and you should help to release
a clasp. The window control/hand grip piece will lift straight up, and the
plug going to the window control will unsnap. Again, put the piece into the
hatch for safekeeping.
- Lock the door. Now pull out gently on the (inside)
handle. Use your other hand to pry the plastic cup that sits behind the door
handle out. There are 2 snaps on both the top and bottom. It will take some
wiggling to get the part out - you'll end up locking/unlocking it and
playing with the handle for a bit, but the part should come out with no
trouble. Throw it in the hatch.
- At this point, all the "secrets" of the door
panel are gone.
- Along the perimeter of the panel, you will find a number of screws.
There are two at the front edge of the panel, with plastic washers. There
are two at the bottom, holding the plastic seatbelt guard in place. There
are three screws holding the rear seatbelt protector in
- Beyond these screws, there are the dreaded snap-clips which are common
to nearly all door panels. Be very careful with these. If
you have never removed a door panel, it's a given that you're going to break
some. Probably 60% of 'em. Basically what you do now is go around the
perimeter of the door, pulling on the edges. They will "pop" loudly when
they release. Off the top of my head, there are 2 or 3 on each edge, and 4
or 5 along the bottom. Eventually you will have all the edges free.
- To actually take the panel off, pull out the seatbelt a bit so you have
some slack. Now pull outward on the bottom of the panel, and lift up gently.
The panel will break free without very much effort. If
you're working hard to get it off, you've probably got something that's
- When you get the panel off, the seatbelt will still be threaded through
it. Gently pull it out until you reach the end of the belt (a few feet) and
set the entire door panel gently down on the ground, leaning against the
Replacing the Rear SpeakersReplacing the rear speakers is quite a bit
easier, but it is still a very time-consuming job. There is NO
way to get the speaker out through the little rectangular hole.
Instead, you have to remove all the body panels
in the hatch from around the speaker.
- Tools Needed: Socket Set
- First, remove the rear (hatch) carpet and tie-downs.
- Take off the removable pieces. There are two panels that provide access to
the taillights from the inside - these snap out easily. Then remove the
speaker grilles, by pulling up on the inside edge of the
cloth cover. The inside edge will pop up, then pull sideways to release the
outside edge. If you still have the vinyl cover that keeps people from looking
into your hatch, unhook it from the hatch, and then remove the winding
assembly by pulling it straight up at each end.
- The first panel to remove is at the rear of the hatch, dead-center. It is
held in place with two large plastic thumbscrews, and a few nuts at the
bottom. Remove them, and the center piece should come out easily.
- The two panels to the right and left of center should also come out
easily. They are held in place with a number of nuts screwed into the bottom
and sides of the car.
- Next you remove the panels that are actually covering the speakers. Same
story - find the nuts and screws, remove them, then lift the panel out.
Installing an aftermarket CD ChangerOkay, so maybe you like the Bose
setup, and you just want to install a CD player. If you can't get your hands on
a factory player, and/or want the convienence of a 6 disc changer, that's a
You'll have to add an "RF-Style" CD-changer. These
changers essentially broadcast CD sound over your current FM radio. This is
good, because it means that you don't have to get into any hardcore wiring
issues. This is bad, because it means that the sound quality of the CD player
will be limited by the sound quality of your FM radio. Realistically, though, if
you're happy with the sound from the stock system, you'll be happy adding a CD
One owner's experiences in adding a CD changer
More to come real soon! Keep watching!You really got me (midi)
CreditsPage written and maintained by: Adam Lotz -
People who submitted significant contributions to
- Rob Wunsche - CD changers
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