Aaron D-200 Instructions Manual

Category
Audio amplifiers
Type
Instructions Manual

This manual is also suitable for

The single biggest bone of contention that customers have with speaker manufacturers is
caused when a speaker is damaged by too much power input or by amplifier distortion. This is not
covered by warranty as it is deemed to be customer abuse, often the customer feels this problem
should not arise. So in an effort to further improve our relationship with you, (our valued customer),
there is something we will try to help you understand in an effort to circumvent this potential
problem.
As a manufacturer it is impossible to protect or prevent you the consumer from damaging
the speaker when one of the two following things happen:
1: Using an amplifier that has too much output for the speakers capacity.
2: Causing the amplifier to distort by turning up the volume too high.
The first problem is easy to avoid. When you purchase an amplifier you must take note
of its` power output. This will tell you the minimum size speaker to purchase. For instance if
you purchase a 100W speaker then the amplifier must be rated at 100W or less. By the way, it is
perfectly alright to use a 400W speaker with a 10W amplifier there is no limit in that direction but as
a general rule an amplifier closer to the rating of the speaker will sound a little better. If the speaker
is very efficient the improvement will be less obvious.
The second problem is far harder to understand and avoid. You see, even if the amplifier
power is smaller than the speaker it is still possible to damage the speaker. This is caused by what
is known as distortion. An amplifier distorts when the volume control is turned up too high forcing
the amplifier past its rated power output. So an amplifier rated at 100W can be forced to put out
120W. But 20W of that power is distortion and this is what damages your speaker. The hard part
is to know when your amplifier has passed its limit and is distorting. The position of your volume
control will not tell you, if the source output, (the source is a DVD player, CD player or Tape deck
etc.) is high then the amplifier may distort with the volume control at 12 o’clock but on the other
hand if the source has a low output the amplifier may not distort until 3 o’clock. The only way to tell
is by listening carefully to the music quality. Don’t turn the volume control any more if the sound
becomes harsher, less tight and a bit blaring. That holds even if the volume control is less than half
way.
DECOR
INSTRUCTIONS
Congratulations on choosing a pair of “Aaron” loudspeakers. We at Aaron have gone to the upmost
trouble to ensure your continuing satisfaction for many years to come. Every individual speaker must
meet our exacting specifications with regards to performance and craftsmanship before it is allowed to
leave our factory.
IT IS ABSOLUTELY VITAL YOU READ
THIS NEXT SECTION!
OTHERWISE IT COULD CAUSE YOU A
LOT OF NEEDLESS EXPENSE
TIMES WHEN YOUR SPEAKERS ARE AT MOST RISK FROM YOU.
1: Parties are the most common cause of speakers being damaged by too much power or by distortion, it often
happens because of a desire to have the music loud. Distortion is harder to detect because it is masked by lots
of other noise.
2: After you have been listening to the music for a while there is a natural temptation to turn up the volume. This
is because your ears lose their sensitivity.
3: Turning up the volume so you can hear the music in another part of the house or outside. Instead either
install extension speakers or have long speaker leads.
4: Your children, (if you have them), when you are not present often have the stereo distorting. Either fix it so
they can’t turn the stereo on or educate them about the expensive damage caused by having the volume too
high.
5: After you have been to a loud concert or live gig. Once again your ears have become less sensitive.
6: When you are in a state of intoxication is another time when there is a temptation to turn the volume up with-
out care.
The best way to avoid the above potential problems is at a time when you are fresh, turn the volume control
up until the quality of the sound changes as described previously. Take note of that position and make sure, no
matter what the circumstances, the volume control is not turned above that point. If at that point the volume is not
loud enough there is only one solution, it means you have to purchase a larger amplifier and, if required, larger
speakers.
CONNECTING YOUR SPEAKERS
• Depending on the model you have purchased connection can be done either by using bared wire,
4mm banana plugs or with 8mm spades. If you choose to use bared wire for our three way terminals,
simply unscrew the nuts and you will find under the nut a hole to push the wire into.
• We do not supply speaker cable with the speakers because every installation is different. There
are though, some important points to note. Keep the speaker cable as short as practical and use
good quality cable. As a guide if the cable is more than 5M then the conductor diameter must be
greater than 1.5mm (18 Gauge) at no stage is it suitable to use wire diameter less than 1mm (22
Gauge). The longer the run of cable the thicker it needs to be.
• When connecting the speaker to the amplifier it is very important that the positive (+) terminal on
the amplifier is connected to the positive terminal on the speaker. In most cases this means that the
red terminal on the amplifier is connected to the red terminal on the speaker. Likewise the black ter-
minals are connected to each other. Failure to do this will result in a reduced bass performance and
loss of stereo image.
• Never allow the two conductors in the speaker cable to touch each other, this could cause damage
to your amplifier.
• In the case where cable is already wired through the house or the cable has no markings contact
your Hi Fi specialist for advice.
CONNECTING THE D-200 & D-400
CENTRE CHANNEL
CENTRE CHANNEL WIRING INSTRUCTIONS
After you have connected the two lower terminals in the normal manner to the main left and right
amplifier outputs wire the centre channel as follows. The centre channel wiring process is the same
for the D-200 and D-400. If you refer to the diagram you will see that a twin cable is connected to the
top terminal of the speakers on both sides. Then at the back of the Amplifier these two cables are
then twisted together and connected to the amplifiers centre channel output. This results in the two
part centre channels being wired in parallel. Please note the combined impedance of the two centre
channel half’s is 6 ohms.
SPEAKER INPUT IMPEDANCE
Very important please note: What we state in this section relates only to the AARON
LOUDSPEAKER product, we are not responsible for any nominal specifications quoted by any
other manufacturers that may be inaccurate.
It is important that you understand a little about your speakers impedance for two main rea-
sons. One is to calculate how much undistorted power your amplifier will deliver. Secondly to check
that the speaker’s impedance is suitable for your amplifier or if it’s safe to have two speakers on the
output of each channel. The speaker input resistance is quoted as the “nominal impedance” this is
what you base all your calculations on.
1: If you wish to calculate the output power from the amplifier then you must first look at the
amplifier specifications. It will usually give you an output rating for 4 ohms and 8 ohms. If the nominal
speaker value is 8 ohms for example, then the amplifier’s power rating for 8 ohms is the one you have
to allow for. Note: If the speaker’s nominal impedance is 6 ohms (which is the case with some models
on the Aaron range) then the maximum undistorted power from the amplifier will be half way between
the 4 ohm and the 8 ohm rating.
These wires can be connected to
the other center channel speaker input
instead of directly to the amplifier.
Note: Wires are
twisted together.
Left and Right Main channel
connections are done to the
lower terminals on the speakers.
2: It is safe to have a speaker with a nominal impedance greater than the amplifiers minimum
output rating. But care must be taken not to use a speaker or speaker combination that is below the
amplifier’s minimum impedance capability. Having said that, most reputable amplifier manufacturers
allow for a small safety margin, for instance it is not likely to cause any problem if you connect an
AARON” 6 ohm speaker to an 8 ohm rated amplifier output. Should you wish to put two speakers on
each amplifier output, a little more care is required. Below is a list of safe combinations that can be
used with the most high quality, modern amplifiers.
Main speaker (ohms) 16 16 8 16 6 8 8 6
& & & & & & & &
Second speaker (ohms) 16 8 16 6 16 8 6 8
If your combination does not fit any of the above seek advice from the amplifier manufacturer
before turning the system on. Note: a 6 plus 6 ohm connection may be possible but check first as the
amplifier will need to be rated into 2 ohms to make this combination safe.
SURROUND SOUND
SPEAKER PLACEMENT
With an audio visual system, “centre channel” and “surround sound” speakers have to be
placed in certain positions to obtain the best surround sound effect. However the system must also
fit in with your room layout and décor, so more often than not the following recommendations can’t be
followed to the letter. Still, our advice is to stick as close as possible to the guidelines below.
With the combined centre channel and main speakers they will give you the best results if
they are placed equal distance on each side of the TV panel. The audio image will also further im-
prove if they are placed at some distance away from the panel. This is despite the fact that we offer
special covers to match the panel height with the expressed purpose of placing the speakers adja-
cent to the panel. Positioning the speakers directly next to the panel is a lifestyle decision that has
the sole benefit of enhancing your home environment without a huge negative affect on the surround
sound image quality.
Surround sound speakers should be placed one each side of your listening position at ap-
proximately ear height or higher. It is also common to place them behind the listening position each
side of the room at ear height or higher. Both positions will give you excellent results but it is worth-
while to note that the software has been recorded assuming the surround sound will come from the
sides.
MOUNTING OPTIONS
On the back of the D-100 AND D-200 you will see two metal key holes. These can make your
installation very easy because all that is required are two screws on your wall. It is important though,
that you make sure the screws are fixed securely enough to hold the speakers weight.
Key Holes for
mounting on
wall screws.
Rubber Buffer
supplied but
not fixed on.
Optional mounting
brackets available
in 3 sizes to stand
the D-200 off the wall.
ATTACHING SPIKES
By attaching the supplied spikes to
speakers it can further enhance the
sound quality, especially if the floor
construction is not rigid or covered with
carpet.
Use spike and locknut in each cor-
ner to adjust the spike heights so the
speaker doesn’t wobble when on an
uneven floor.
If you wish to avoid scratching hard
surfaces use the supplied rubber buffers
to cover the spike bushes.
CARING FOR YOUR SPEAKERS
ROUTINE MAINTENANCE:
Periodically wipe the cabinets with a damp cloth using a mild detergent or you may use a polish such as
Mr Sheen.
Vacuum the grill cloth with the brush attachment of the vacuum cleaner from time to time.
Vacuum the grill and lightly dust the speaker diaphragms with a clean paint brush.
Every 2 years rotate the Woofer one screw hole.
THINGS TO BE CAREFUL OF
Never use more than a small adjustment on your tone controls especially at high volumes.
Turn down the volume when changing a record or switching from one source to another.
Whenever changing wires, plugs, etc always turn all equipment off.
When you get your speakers check that they have not been damaged in transit. Please keep the original
cartons in case of future need, they fold flat and take little space.
Don’t push in the diaphragms with any force.
Do not expose the diaphragms to direct sunlight.
It is not advisable to place your speakers in a damp environment.
Don’t use solvents to clean any part of the speaker.
Consult with your Hi Fi specialist before connecting more than one speaker to each output of your amplifier.
Never connect your speakers to the electricity mains.
Tampering with the internal parts of the speaker may cause damage not covered by warranty.
If a part fails, insist on a genuine replacement.
Do not put your ears too close to the speakers or play them too loud for extended periods of time, as this
may cause partial hearing loss.
Beware! Cats love sharpening their claws on speaker cloth.
D-100 D-200 D-400
Frequency
Response
90Hz - 20KHz
(± 3db)
90Hz - 20KHz
(± 3db)
50Hz - 20KHz
(± 3db)
Recommended
Amplifier
Power
20 - 100W per
channel undistorted
20 - 100W per
channel undistorted
20 - 200W per
channel undistorted
Sensitivity
Ref 2.83V, 1M
86db 86db 86db
Nominal
Impedance
8 ohms
8 ohms (6 ohms
Combined Centre
Channel)
8 ohms (6 ohms
Combined Centre
Channel)
Tweeter
25mm Dome
Tweeter
2 x 25mm Dome
Tweeter
2 x 25mm Dome
Tweeter
Midrange 132mm Cone
Woofer
132mm
Pistonic Cone
2 x 132mm
Pistonic Cone
5 x 132mm
Pistonic Cone
Cabinet
Dimensions
270mmH
168mmW
95mmD
505mmH
168mmW
95mmD
1100mmH
180mmW
205mmD
Enclosure
Finish
Black with Gray or
Black Grill
Black with Gray or
Black Grill
Black with Gray or
Black Grill
Weight 2.4kg each 4.6kg each 14.5kg each
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Aaron D-200 Instructions Manual

Category
Audio amplifiers
Type
Instructions Manual
This manual is also suitable for

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