Thank You For Choosing
Garrett Metal Detectors!
Thank you for choosing Garrett Metal Detectors’ ACE™
series detector. This enhanced metal detector has all the
depth and technology, including Garrett’s exclusive
Target ID technology you need to make your treasure
hunting adventures exciting and very rewarding. All of
our products are backed by 40 years of extensive
research and development that ensures your ACE
detector is the most advanced of its kind in the industry.
The ACE series of detectors include Garrett’s patented
discrimination feature. This technology, found only on
Garrett detectors, features two indicator scales that allow
the user to see the detector’s discrimination setting
(Lower Scale) as well as the analysis of each detected
target (Upper Scale). They also include the highly
acclaimed 6.5x9” PROformance searchcoil. This highly
rugged, epoxy-filled searchcoil covers more ground per
scan and offers greater depth to find those deeply buried
Garrett Metal Detectors
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Ace 150 • Ace 250
treasures.
In order to take full advantage of the special features and
functions of the Ace 150 and 250 metal detectors,
carefully read this instruction manual in its entirety.
We also recommend you take time to read Garrett’s
Treasure Tips and Hunting Hints booklet for expert
advice on successfully hunting, pinpointing and digging
your targets.
Table of Contents
ACE Parts 7
ACE Assembly 8
ACE Controls & Features
ACE 150 12
ACE 250 19
Troubleshooting Guide 26
Warranty & Service 27
Warning 30
4
Garrett Metal Detectors
Accessories 32
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Ace 150 • Ace 250
ACE Illustration
Search
coil
Lower
Stem
Upper
Stem
Control
Housing
ACE Parts
No tools are required to assemble the ACE 250 or 150
enhanced metal detectors. 4 AA batteries are included
with the detector.
Spring
Knob
Washer
Threaded
Bolt
Clip
S-shaped
Ramrod Stem
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Garrett Metal Detectors
Handle
Grip
Detector
Stand
LCD
Screen
Pushbutton
Controls
Padded
Arm Cuff
Before assembling your ACE metal detector ensure you
have the complete set of parts, which include:
• Control Housing with S-shaped Ramrod Stem
• Upper Stem
• Lower Stem
• Two (2) Knobs
• Two (2) Washers
• One (1) Threaded Bolt
• Searchcoil with Cable
If any part is missing, please contact your local dealer.
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Ace 150 • Ace 250
ACE Assembly
1. Attach the Lower Stem to the Searchcoil by
first removing the paper liner from the two
mounting washers and inserting them into the
Stem (adhere to stem) then slip the
Searchcoil onto the Stem.
2.
Insert the Threaded Bolt through the holes of
the searchcoil and hand-tighten the two Knobs.
3. Install the Upper Stem to the Lower Stem
and then this assembly to the ACE Control
Housing by depressing the two buttons and
coupling the Stem to the Housing unit.
Adjust for the most comfortable operating
length.
4. Wrap the Searchcoil cable snugly about the
stem with the first turn of the cable over the
stem.
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Garrett Metal Detectors
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Ace 150 • Ace 250
5. Insert the cable connector into the connector on
the housing and hand-tighten securely.
6. All ACE detectors come with batteries installed.
Slide cover back to replace batteries.
7. The location of the arm cuff may be adjusted
by removing the screw in the bottom of the arm
rest and rotating the cuff 180°.
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Garrett Metal Detectors
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Ace 150 • Ace 250
ACE 150 Controls
1. POWER Pushbutton - Press the POWER button once
to turn the detector ON or OFF. Note: After turning
detector off, wait 3 to 5 seconds before turning back ON.
2. SENSITIVITY Pushbutton - Push the SENSITIVITY
button to step through the four (4) sensitivity levels,
which are continuously shown on the LCD screen.
Use lower sensitivity levels in locations where the
detector is behaving erratically due to excessive metallic
trash interference, high mineral soils, saltwater beaches,
or other metal detectors are present.
3. MODE Pushbutton - Push the MODE button to select
one of three desired detection Modes:
• All-Metal Mode - This MODE is designed to
detect every type of metal and should be used
when you want to find all metal items or when
the materials of the desired object is
unknown.
Switch to the All-Metal Mode to aid in locating a
target when its signal is inconsistent.
(Inconsistent signals can mean a trash target is
nearby a good target).
Use higher sensitivity levels when searching for very
small or very deep targets.
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Garrett Metal Detectors
• Jewelry Mode - This mode is designed to
find jewelry such as rings, bracelets, watches
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Ace 150 • Ace 250
and necklaces and ignore most trash items
such as bottlecaps and nails.
• Coins Mode - This modeis designed to find
all types of coins and eliminate trash items
such as iron, bottlecaps, most pulltabs and
other objects normally encountered while
coin hunting. Some bent pulltabs and pieces of
tabs may not be eliminated from detection.
Some digging of junk targets is to be expected.
ACE 150 Features
The ACE 150 is designed with Garrett’s exclusive
Graphic Target ID technology, which indicates the
probable identification of a target along a horizontal
scale that reads from low conductive metals (e.g. iron) on
the left to high conductive metals (e.g. U.S. coins) on the
right.
1. Mode - Indicates which detection mode is
selected by highlighting the corresponding
word on the LCD screen.
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Garrett Metal Detectors
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Ace 150 • Ace 250
2. Target ID Legend - A Target ID Legend is located
directly above the LCD screen and indicates commonly
found targets and metals. When a target is detected, the
Target ID cursor will appear below the word that most
likely indicates the type of target found, based on its
conductivity.
3. Upper Scale - The Upper Scale, where the Target ID
cursor is illuminated when a target is detected, consists
of five (5) graphical segments.
4. Target ID Cursor - The Target ID cursor is illuminated
in the Upper Scale and indicates the probable identity of
a detected target.
5. Lower Scale - The lower horizontal scale, or Notch
Discrimination Scale, indicates the discrimination pattern
where the ACE will or will not produce an audible signal
when a target is located. This scale changes when
switching between Detection Modes.
No audible signal will be produced when a target is
located where a notch is present (those regions of the
Lower Scale where no cursors are visible).
6. Coin Depth - The depth of a coin, or similar sized
target, will be shown on the LCD screen. Depth is
indicated when the LCD scale is illuminated at 2”, 4” or
6+ inches. Sweep over the target with the searchcoil 1”
from the soil to get the most accurate reading. Note:
Targets larger than a coin may display shallower than
acutal depth while targets smaller than a coin may
display deeper than actual depth.
7. Low Battery Indicator - When the unit’s batteries
become weak, the Low Battery Indicator will turn on. For
best performance, replace the old batteries with quality
alkaline AA batteries. NiMH rechargeable batteries may
be used, but will have a shorter life per charge. You can
expect 20 to 40 hours of operation depending on battery
type.
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Garrett Metal Detectors
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Ace 150 • Ace 250
Access and replace the batteries by gently sliding the
cover off the control housing. Remove batteries from the
ACE when the unit will be stored for longer than 30 days
(See Page 10).
8. Headphone Jack - ACE sport phones with 1/4” plug
can be inserted into the jack found on the reverse side of
the Control Housing.
9. Tone ID - The Tone ID feature produces distinct
audible tones based on a target’s conductivity:
• High conductivity targets (such as U.S. coins)
produce a unique belltone signal.
ACE 250 Controls
The ACE 250 includes these additional control functions
not found on the ACE 150:
• Medium conductivity targets (such as jewelry,
nickels and international coins), produce a
standard-pitched audio signal.
• Low conductivity targets (such as iron and
nails) produce a low-pitch audio signal.
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Garrett Metal Detectors
1. DISCRIM Pushbutton - Use the (+) or (-) DISCRIM
pushbuttons to move the Target ID cursor to the left or
right. Next, use the ELIM Pushbutton to modify the
discrimination pattern on the Lower Scale.
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Ace 150 • Ace 250
2. ELIM Pushbutton - Press the ELIM (Eliminate)
pushbutton to eliminate or activate the LCD cursor
located on the Lower Scale, directly below the Target ID
cursor.
The ELIM function can be used to modify each Mode’s
discrimination pattern. For example, when an unwanted
target is located while hunting press the ELIM button to
create a Notch (delete the cursor) to eliminate that
specific target.
structure.
When pinpointing, the Upper Scale on the LCD Screen
indicates signal strength. When the greatest number of
LCD segments (increasing left to right on the scale) is
shown, the center of the searchcoil is directly over the
target with the depth of a coin-sized target shown on the
depth scale.
4. MODE options:
All Notch Discrimination modifications made while in the
CUSTOM mode will be retained when the detector is
turned OFF. However, all changes made to the Notch
Discrimination scale while in the ALL-METAL, JEWELRY,
RELICS and COINS modes will return to the factory
settings when the detector is turned OFF.
3. PINPOINT Push Button - Press and hold the
Pinpoint pushbutton to determine the exact location of a
target that is still hidden in the ground, wall or other
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Garrett Metal Detectors
• CUSTOM Mode - This Mode can be
programmed solely by the operator. The
ACE 250 is factory preset with the CUSTOM
Mode set the same as the COINS Mode. By
using the DISCRIM and ELIM push buttons, an
operator can modify the Notch Discrimination
settings to individual specifications, which will
be retained in the CUSTOM Mode when the
ACE is turned OFF.
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Ace 150 • Ace 250
The CUSTOM Mode can be used to find
specific metal items. For example, if an
earring has been lost, scan the matching
earring with the ACE 250 while in the
CUSTOM mode. Note where the Target ID
cursor appears when the earring is scanned.
Next, use the DISCRIM pushbutton to move
the Target ID cursor to the left and right. Push
the ELIM button to delete the LCD cursors on
the notch Discrimination Scale, leaving only
the one where the Target ID cursor illuminated
when the earring was scanned. The ACE 250
is now programmed to find only the missing
earring based on the conductivity of its
matching pair.
ELIM can also be used to modify the Notch
Discrimination Scale to reject a specific type of
trash while detecting all other metal. When a
trash metal is detected while hunting, simply
push the ELIM button to create a notch where
the Target ID cursor signaled the presence of
the trash. The next time the ACE 250
encounters the same trash item, it will not
produce an audible signal.
• RELICS Mode - Designed to eliminate trash
targets normally associated with relic hunting,
while detecting good targets in the lower
conductivity range, such as lead and brass.
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Garrett Metal Detectors
23
Ace 150 • Ace 250
ACE 250 Features
The ACE 250 includes these additional features that are
not found on the ACE 150:
recommended settings of each MODE. Note: After
turning detector OFF, wait 3 to 5 seconds before turning
back on.
2. Target ID Legend - The Target ID Legend depicts
illustrations of coins, metals and trash items for a quick,
visual reference when hunting.
3. Upper Scale - The Upper Scale, where the Target ID
cursor is illuminated when hunting, consists of twelve
(12) graphical segments for more precise Target ID and
discrimination.
4. Coin Depth - Coin Depth is expanded to four (4)
depth indicators including 2”, 4”, 6” and 8+ inches.
1. POWER Push Button - Press and release to switch
the unit ON and resume hunting with the same settings
and modifications used prior to turning the unit OFF
When the POWER Push Button is pressed and held for
5 seconds the ACE 250 will return to the factory
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Garrett Metal Detectors
5. Sensitivity - The ACE 250 has eight (8) Sensitivity
settings for more precise depth and target detection.
6. Battery Condition Indicator - An LCD display is
continuously illuminated to indicate the battery level.
25
Ace 150 • Ace 250
Troubleshooting Guide
SYMPTOM SOLUTION
No power
Erratic sounds or
target ID cursor
movement
Intermittent
Signals
I’m not finding
specific targets
Target ID Cursor
bounces
1. Ensure batteries are installed in the correct position.
2. Replace all old batteries with all new batteries
1. Ensure your searchcoil is securely connected and
the coil cable is tightly wound around the stem
2. Ensure you are not using the detector indoors
where excessive amounts of metal are found
3. Reduce your sensitivity setting
4. Determine if you are close to other metal
detectors or other metal structures such as
electrical power lines, wire fences, benches, etc.
(NOTE: Iron targets may cause erratic sounds or Target
ID Cursor movement. You can identify iron targets in an
All-Metal Mode)
Intermittent signals typically mean you’ve found a
deeply buried target or one that is positioned at a
difficult angle for your detector to read. Increase the
sensitivity on your detector and scan from different
directions until the signal becomes more definite. In the
case of multiple targets switch to the All-Metal Mode or
press PINPOINT to precisely locate all targets.
(NOTE: Iron targets may cause Intermittent Signals.
You can identify iron targets in an All-Metal Mode).
Ensure you are using the correct mode for the type of
hunting you are doing. If you are hunting for coins,
ensure you are in the COINS mode. You may also use
the All-Metal mode, which detects all metal targets to
ensure desired targets are present.
If your Target ID Cursor bounces erratically, chances
are you’ve found a trash target. However, a Target ID
Cursor may bounce if a good target (such as a coin) is
not parallel to the searchcoil (e.g. on edge). It may also
bounce if there is one or multiple “junk” targets laying
next to the good target. Scan from different directions
until your Target ID Cursor becomes more stable.
ACE Warranty & Service
Your ACE detector is warranted for 24 months, limited
parts and labor, but does not cover damage caused by
alteration, modification, neglect, accident or misuse.
In the event you encounter problems with your ACE
detector please read through this Owner’s Manual
carefully to ensure the detector is not inoperable due to
manual adjustments. On the ACE 250, press and hold
the POWER Pushbutton for 10 seconds to return the
recommended factory settings.
Before you return your ACE detector to the factory make
certain you have:
1. Checked your batteries, switches and connectors.
Weak batteries are the most common cause of detector
“failure.”
2. Contacted your dealer, particularly if you are not
26
Garrett Metal Detectors
27
Ace 150 • Ace 250
familiar with the ACE detectors.
3. Included a letter that fully describes the problem and
conditions under which they occur.
4. Included your name, address and a phone number
where you can be reached between 8:30 a.m. and 4
p.m., C.S.T.
5. Carefully packed the detector in its original shipping
box or other suitable box. Make certain that proper
insulation or packing material is used to secure all parts.
Do not ship stems or headphones, unless they are a part
of the problem. Be certain to return all coils.
6. Ship to:
Garrett Metal Detectors
Hobby Repair Department
1881 W. State Street
Garland, Texas 75042
You can call Garrett’s Customer Service Department at
1-800-527-4011 (U.S.A.) or 1-972-494-6151 (Outside
U.S.A.) if you have further questions.
Please allow approximately one week for Garrett
technicians to examine and repair your detector after
they receive it; plus another week for return shipping. All
equipment will be returned via UPS or parcel post, unless
written authorization is given by you to ship collect by air
parcel post, UPS Blue (air) or air freight.
International Customers
It is recommended our international customers contact
their local dealer for repairs and warranty service to avoid
the high costs of international shipping rates. If you do
not know where to locate your local dealer please contact
the Garrett factory by calling 1-972-494-6151 or e-mail us
at sales@garrett.com.
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Garrett Metal Detectors
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Ace 150 • Ace 250
WARNING!
Any metal detector may discover underground power
lines, explosives or other items which when struck could
cause personal injury. When searching with your ACE
detector observe these precautions:
• Do not hunt in an area where there might be
underground electric lines or pipes buried at a
shallow depth.
• Do not hunt in a military zone where bombs
or other explosives may be buried.
• Avoid striking any line known to be or
suspected of carrying electrical power.
• Do not disturb any pipeline, particularly if it
could contain flammable gas or liquid.
particularly in areas where you are uncertain of
underground conditions.
• Always use reasonable caution in digging,
30
Garrett Metal Detectors
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Ace 150 • Ace 250
ACE Accessories
Garrett offers a complete line of ACE accessories that will
increase your success and enjoyment of treasure hunting
with your new detector. These accessory products are
available from your local or dealer or by calling the
Garrett factory at 1-800-527-4011.
1. ACE Tote Sport Bag - #1651500
$14.95
Rugged and durable, this ACE series tote bag is 18” in
diameter and is made of durable nylon mesh to easily
hold and store all ACE series detectors (when
disassembled) and accessories.
2. ACE Sport Phones - #1612400
$14.95
These sleek, light-weight
sport headphones, with a
1/4” adapter, are designed
especially for the ACE
detector series to mask
out external noise for
greater audio signal
clarity.
3. ACE Baseball Cap - #1663100
$9.95
This 100% cotton cap
features an embroidered
green Garrett logo on the
front, red and green ACE
logo on the side and
green garrett.com on the
reverse. Comes with a
convenient Velcro strap on the back.
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Garrett Metal Detectors
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Ace 150 • Ace 250
4. ACE Digging Shovel - #1606100
$14.95
Highly durable, this ACE
series stainless steel
digging tool, with handy
depth scale, is ideal for
digging in all kinds of soils.
5. ACE Sport Visor - #1663200
$9.95
The ACE series black
Sports visor protects eyes
from sun's rays and glare
and includes padded rim
to catch perspiration.
Quick slip ON / OFF
design is perfect for men
and women.
6. RAM Books
Charles Garrett and other professional treasure hunters
share their knowledge and experience of treasure
hunting in these fine books:
New Successful Coin Hunting $9.95
Treasure Hunting for Fun and Profit $9.95
Ghost Town Treasures $9.95
Find Gold with a Metal Detector $9.95
Buried Treasure You Can Find $ 14.95
Gold of the Americas $9.95
Treasure Recovery from Sand and Sea $7.95
New Modern Metal Detectors $12.95
Gold Panning is Easy $9.95
Introduction to Metal Detecting $1.00
The Competitive Treasure Hunt $9.95
Treasure Caches Can be Found $9.95
Treasure Tips & Hunting Hints Booklet $4.95
34
Garrett Metal Detectors
35
Ace 150 • Ace 250
Garrett Metal Detectors
1881 W. State Street
Garland, Texas 75042
Add $1.00 for each book (maximum $3.00) for shipping and
handling charges. Please call the Garrett factory to place orders
for all other accessories.
Total for RAM Books
8.25% Tax (Texas residents only)
Handling Charge
Total
Enclosed check or money order
I prefer to order using my: (check one)
American Express MasterCard
Visa Discover
CC # Ex Date
Signature
Name
TREASURE HUNTING NOTES:RAMBook Order Form
Address
City, State, Zip
36
Garrett Metal Detectors
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