Döhmann Helix Two Original operating instructions

HELIX TWO Mk2 INSTALLATION & OPERATION GUIDE
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DA-MAN-H2-003 www.dohma audio.com
HELIX TWO
Mk2 Pho ograph
I stallatio & Operatio Guide

HELIX TWO Mk2 INSTALLATION & OPERATION GUIDE
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Table of Co te ts
A Note from Döhma Audio . . . . . . . . . 3
The Helix Two . . . . . . . . . . . 4
Importa t Messages to be Read Before U packi g the Tur table . . . . . 5
Ope i g the Shippi g Case . . . . . . . . . 6
Packi g List . . . . . . . . . . . 6
U packi g a d Assembli g the Helix Two . . . . . . . 7
Adjusti g the I ter al Suspe ded Chassis Height . . . . . . . 13
Operati g the Helix Two . . . . . . . . . . 14
Speed Co trol . . . . . . . . . . . 14
Each Tur table has a Serial Number . . . . . . . . 15
Register Your Tur table . . . . . . . . . . 15
The Data a d exter al Power Port . . . . . . . . 16
Helix Two Features . . . . . . . . . . 16
Specificatio s . . . . . . . . . . . 17
Customer Support . . . . . . . . . . 18
Factory Co tact I formatio . . . . . . . . . 18

HELIX TWO Mk2 INSTALLATION & OPERATION GUIDE
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A Message from Döhma Audio
Tha k you for i vesti g i a Döhma Audio Helix Two Mk2 tur table.
We believe that to u lock the pote tial of the i formatio co tai ed i the grooves of a vi yl record a d to
experie ce absolute emotio al e gageme t with a artist’s work, it takes a audio system where atte tio
has bee placed o the smallest details a d time has bee take to perfect the desig .
I spired by the u ique visio of audio desig er Mark Döhma , Döhma Audio leads a o-holds-barred
assault o what is possible i co temporary audio tur table & to earm desig . Ack owledgi g the lege dary
pio eers that have come before us, we look forward a d strive to create the most adva ced a alogue audio
systems available today.
Your Helix Two tur table i corporates state-of-the-art tech ologies that have previously ever bee applied
to audio applicatio s. It is a heirloom quality i dustrial work of art that has bee desig ed to give you the
ultimate e joyme t of your record collectio .
Döhma Audio co ti ues to i ovate a d ma ufacture class leadi g products to support our visio for
excelle ce i e gi eeri g a d musical playback performa ce. All i ovatio s are based o reproducible
e gi eeri g pri ciples, ot marketi g hype.
Music is o e of the greatest expressio s of the huma soul. We have meticulously crafted this tur table to
faithfully deliver the esse ce of every performa ce. E joy!
Mark Döhmann – Director of Design and Systems Architecture

HELIX TWO Mk2 INSTALLATION & OPERATION GUIDE
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The Helix Two
The Helix Two Mk2 i corporates the Döhma tech ologies i to a smaller footpri t with a si gle to earm
facility a d is e gi eered to deliver u paralleled performa ce i a alogue playback.
It is the result of ma y years of research, developme t, collaboratio a d liste i g by i ter atio ally
acclaimed a alogue desig er Mark Döhma .
Mark ide tified the specific challe ges of desig i g a ew be chmark tur table a d the explored what
tech ologies exist i the world that address these challe ges. After i vestigati g solutio s used i aerospace,
spectrometry, medical imagi g a d electro microscopy, Mark i corporated these tech ologies i to a ew
tur table desig .
Due to its fully i tegrated Mi usK vibratio isolatio system utilizi g NSM a d mecha ical crossover
tech ology, its ability to deal with vibratio a d reso a ce is u surpassed a d allows the music to be e joyed
with a outsta di g level of realism.
The Helix Two has a ew custom desig ed Swiss-ma ufactured motor which i corporates the very latest
tech ology arou d co sta t torque performa ce a d quiet ess of operatio .
The Helix Two is desig ed to operate flawlessly i o -ideal e viro me ts such as older houses with woode
floors, upper floors, attics where exter al vibratio s are carried through buildi gs – eve those made from
co crete, steel, a d brick. Due to its revolutio ary vibratio isolatio system, it is also ot depe de t o a
high-quality audiophile sta d.
The desig has made it possible to i corporate a level of e gi eeri g previously ot possible at this price poi t
a d as a result, the Helix Two is co sidered to be outsta di g value. The more compact dime sio s a d o e
box desig allow it to be used i smaller spaces a d sta dard sized sta ds.
Ofte chose by discer i g audiophiles arou d the world as their refere ce a alogue system, as well as bei g
the tur table of choice for ma y high-e d bra ds exhibiti g i major i ter atio al hi-fi shows, the Helix Two
simply allows the music to flow a d the full pote tial of the system to be achieved.

HELIX TWO Mk2 INSTALLATION & OPERATION GUIDE
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Importa t Messages to be Read Before U packi g the Tur table
Please read a d e sure that you u dersta d the followi g i formatio before proceedi g to u pack, assemble
a d operate the tur table.
CAUTION:
CAUTION:CAUTION:
CAUTION:
The fully packed shippi g crate ca weigh i the
order of 65-80kg (143-177 lbs). Please use a suitable trolley
or tra sportatio device to move it to the i stallatio
locatio .
CAUTION
CAUTIONCAUTION
CAUTION:
::
: The tur table assembly i the bottom
compartme t weighs approximately 30kg (60 lbs).
A two-perso lift is required for safety. Check your local
occupatio al safety regulatio s whe i doubt.
WARNING
WARNINGWARNING
WARNING:
::
: Please read the i structio s
carefully before i stalli g the tur table.
Never ope the tur table chassis!
Electrical Shock hazard.
Whe i doubt, please co tact your dealer.
WARNING:
WARNING:WARNING:
WARNING: Never move the table from a flat surface
without the tra sportatio screws i place. If the tur table
is moved without the tra sportatio screws i place, the
i ter al isolatio mecha ism ca be damaged a d such
damage is ot covered u der warra ty.
RECOMMENDED:
RECOMMENDED:RECOMMENDED:
RECOMMENDED:
Please retai the tra sport screws i
the eve t the table must be moved at a later date.

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Ope i g the Shippi g Case
The Helix Two is shipped i a si gle professio al road case. The lid has two pia o hi ges o o e side a d two
co ve tio al hi ges o the other side.
To ope the lid, twist the two pia o keys a d lift the lid ope via the two rear hi ges. There are 3 mai
compartme ts. The top compartme t co tai s the platter, clamp a d accessories. The bottom compartme t
co tai s the tur table a d the compartme t o the right co tai s the optio al to earm. If a to earm has ot
bee shipped with the tur table, the right compartme t will be empty.
The beari g assembly is tra sported pre-lubricated, attached to the tur table chassis. The platter assembly
comes complete with the upper beari g assembly which is precisio matched to the i verted beari g post
fou d o the chassis.
A 5mm (3/16 i ch) ball beari g is co tai ed withi the beari g housi g. Whe mou ti g the platter to the
chassis platform please e sure the ball beari g is i side the i verted beari g post a d has ’t dropped out i
shippi g. If the ball beari g is missi g, replaceme t ball beari gs are available from your dealer.
The twi belts are also pre-i stalled o the platter from the factory for easy tra sport.
For ease of i stallatio , a brightly coloured stri g is supplied to facilitate the quick a d easy i stallatio of the
belts over the pulley. Please ote that a y twi e or cord approx. 30cm (12 i ches) i le gth is suitable for this
purpose. The tur table is located i the bottom compartme t.
Packi g List
•200ml bottle of Sulliva s Cove Award Wi i g Si gle Malt Whisky (a gift from us to you)
•A gift card
•A pair of white gloves
•A bubble level
•Coloured stri g to facilitate the fitti g of the belts arou d the motor spi dle
•Döhma Audio Helix Two Tur table
•Helix Two Flight Case
•To earm if ordered
•Helix Two User Ma ual

HELIX TWO Mk2 INSTALLATION & OPERATION GUIDE
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U packi g a d Assembli g the Helix Two
STEP 1
STEP 1STEP 1
STEP 1
Bri g the Helix Two road case i to positio for u packi g a d i stallatio . Remember to use a trolley of
tra sportatio device due to the weight of the road case. To ope the lid, twist the two pia o keys a d lift the
lid ope via the two rear hi ges.
STEP 2
STEP 2STEP 2
STEP 2
The platter, clamp a d accessories are embedded withi a block of solid black foam which we refer to as the
‘top compartme t’. Place your ha ds dow either side of the top compartme t, grip the bottom edges of the
block of foam a d lift the top compartme t vertically up a d out of the road case. Place the top compartme t
o the floor or somewhere where you ca access it later. You will ow be able to see the tur table wrapped i
plastic located i the bottom compartme t.
We hope that you e joy our gift to you, the award wi i g Sulliva s Cove si gle malt whisky. We advise that
for the sake of completi g the tur table i stallatio accurately, that you co sume it after, ot prior to
i stallatio .  স হ ঺ ঻

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STEP 3
STEP 3STEP 3
STEP 3
Remove the tur table from the bottom road case a d place i fi al operatio al positio . Recomme ded
i stallatio requires a surface capable of supporti g up to 60Kg (120 lbs) a d a 480mm (19”) wide x 480mm
(19”) deep surface which allows space for the power cable to exit eatly.
STEP 4
STEP 4STEP 4
STEP 4
Please ote the 4 x LONG M6 tra sport securi g screws used to lock the table chassis to the suspe sio
system (vibratio isolatio platform) duri g shippi g. They are located ear the i er edge of the Platter Ri g
show below.
O ce the tur table is i its fi al operati g positio , remove the 4 x LONG M6 tra sport securi g screws with
a Alle wre ch (Hex key).
* VERY IMPORTANT
* VERY IMPORTANT* VERY IMPORTANT
* VERY IMPORTANT –
––
– T
TT
The
he he
he tra sport screws must be
tra sport screws must be tra sport screws must be
tra sport screws must be u screwed eve
u screwed eveu screwed eve
u screwed eve ly. Start with o e screw a d
ly. Start with o e screw a d ly. Start with o e screw a d
ly. Start with o e screw a d u screw it
u screw it u screw it
u screw it
for a few rotatio s, the move to the ext
for a few rotatio s, the move to the ext for a few rotatio s, the move to the ext
for a few rotatio s, the move to the ext screw a d
screw a d screw a d
screw a d u screw
u screw u screw
u screw it
it it
it for the same amou t of rotatio s, the the
for the same amou t of rotatio s, the the for the same amou t of rotatio s, the the
for the same amou t of rotatio s, the the
same for the third screw a d the the same for the fourth screw.
same for the third screw a d the the same for the fourth screw. same for the third screw a d the the same for the fourth screw.
same for the third screw a d the the same for the fourth screw. Retur to the first screw a d the repeat
Retur to the first screw a d the repeat Retur to the first screw a d the repeat
Retur to the first screw a d the repeat
this process so that the
this process so that the this process so that the
this process so that the top of the tur table rises eve ly a d is ot lo
top of the tur table rises eve ly a d is ot lotop of the tur table rises eve ly a d is ot lo
top of the tur table rises eve ly a d is ot lop
pp
psided. To make this easier, it is
sided. To make this easier, it is sided. To make this easier, it is
sided. To make this easier, it is
recomme ded that
recomme ded that recomme ded that
recomme ded that you place o e ha d o the surface a d ge tly push dow while u screwi g each of the
you place o e ha d o the surface a d ge tly push dow while u screwi g each of the you place o e ha d o the surface a d ge tly push dow while u screwi g each of the
you place o e ha d o the surface a d ge tly push dow while u screwi g each of the
screws
screws screws
screws so that you avoid the mecha ism
so that you avoid the mecha ism so that you avoid the mecha ism
so that you avoid the mecha ism pushi g up u eve ly as the screws are u screwed a d eve tually
pushi g up u eve ly as the screws are u screwed a d eve tually pushi g up u eve ly as the screws are u screwed a d eve tually
pushi g up u eve ly as the screws are u screwed a d eve tually
removed.
removed.removed.
removed. If the two
If the twoIf the two
If the two screws
screws screws
screws o o e side are u screwed a d removed prior to the other screws o the other
o o e side are u screwed a d removed prior to the other screws o the other o o e side are u screwed a d removed prior to the other screws o the other
o o e side are u screwed a d removed prior to the other screws o the other
side bei g u screwed a d removed, the
side bei g u screwed a d removed, the side bei g u screwed a d removed, the
side bei g u screwed a d removed, the i ter al mecha ism may ‘s ap up’ u eve ly a d this ca damage the
i ter al mecha ism may ‘s ap up’ u eve ly a d this ca damage the i ter al mecha ism may ‘s ap up’ u eve ly a d this ca damage the
i ter al mecha ism may ‘s ap up’ u eve ly a d this ca damage the
i ter al mecha ism
i ter al mecha ismi ter al mecha ism
i ter al mecha ism. PLEASE AVOID THIS POSSIBILITY BY FOLLOWING
. PLEASE AVOID THIS POSSIBILITY BY FOLLOWING. PLEASE AVOID THIS POSSIBILITY BY FOLLOWING
. PLEASE AVOID THIS POSSIBILITY BY FOLLOWING THE
THE THE
THE ABOVE INSTRUCTIONS CAREFULLY.
ABOVE INSTRUCTIONS CAREFULLY.ABOVE INSTRUCTIONS CAREFULLY.
ABOVE INSTRUCTIONS CAREFULLY.
* I the eve t that the Helix Two
* I the eve t that the Helix Two * I the eve t that the Helix Two
* I the eve t that the Helix Two is moved at a later date, the tra sport screw
is moved at a later date, the tra sport screwis moved at a later date, the tra sport screw
is moved at a later date, the tra sport screws
ss
s must be
must be must be
must be screwed
screwedscrewed
screwed i eve
i evei eve
i eve ly i
ly i ly i
ly i
the exact opposite process
the exact opposite processthe exact opposite process
the exact opposite process to the o e described above. THIS
to the o e described above. THIS to the o e described above. THIS
to the o e described above. THIS MUST HAPPEN PRIOR TO ATTEMPTING TO MOVE
MUST HAPPEN PRIOR TO ATTEMPTING TO MOVE MUST HAPPEN PRIOR TO ATTEMPTING TO MOVE
MUST HAPPEN PRIOR TO ATTEMPTING TO MOVE
THE
THE THE
THE TURNTABLE.
TURNTABLE.TURNTABLE.
TURNTABLE.
* WARNING: If the tur table sustai s damage due to a failure to comply with these i structio s, the cost of
* WARNING: If the tur table sustai s damage due to a failure to comply with these i structio s, the cost of * WARNING: If the tur table sustai s damage due to a failure to comply with these i structio s, the cost of
* WARNING: If the tur table sustai s damage due to a failure to comply with these i structio s, the cost of
repairs will ot be covered by the Döhma Audio Warra ty policy.
repairs will ot be covered by the Döhma Audio Warra ty policy.repairs will ot be covered by the Döhma Audio Warra ty policy.
repairs will ot be covered by the Döhma Audio Warra ty policy.
* Please retai the tra sport screws i the eve t the table must be moved at a later date.
CAUTION:
CAUTION:CAUTION:
CAUTION: The tur table assembly i the bottom compartme t weighs
approximately 30kg (66 lbs). A two-perso lift is required for safety.
Check your local occupatio al safety regulatio s whe i doubt.

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STEP 5
STEP 5STEP 5
STEP 5
Place a soft bla ket or cloth o a flat surface to place the platter o . Remove the platter from the top
compartme t solid foam a d place it o the bla ket with the beari g side up. Remove the soft plastic beari g
protector o the u derside of the beari g to reveal the beari g assembly o the bottom of the platter.
Remove the soft plastic beari g protector from the i verted beari g post o the chassis.
STEP 6
STEP 6STEP 6
STEP 6
Perform a i itial levelli g of the chassis by wi di g each of the four feet up or dow . Use a bubble level o
the top plate of the chassis as a starti g poi t. Visually check each foot to e sure that all four are firmly
co ecti g with the surface of the shelf that the tur table is placed o .
STEP 7
STEP 7STEP 7
STEP 7
Faste the record clamp to the spi dle. The record clamp is the desig ed to also be the most secure ha dle to
move the platter i to placeme t positio . Check that the twi belts are sitti g i the matchi g grooves o the
platter.
Loop the supplied brightly coloured stri g (or a y suitable stri g/cord) behi d both belts to e able the belts to
be pulled over the motor spi dle with ease.

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STEP 8
STEP 8STEP 8
STEP 8
Ge tly lower the platter to the beari g & feed the stri g through the rear portal o the side of the motor
spi dle. Fi ish loweri g the platter o to the beari g & pull the stri g with the two belts attached up a d over
the motor spi dle. O ce the belts are i the motor spi dle grooves, ge tly remove the stri g.
STEP
STEP STEP
STEP 9
99
9
U pack the exter al power supply a d place the u it o the floor or o a other shelf away from the tur table.

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STEP 10
STEP 10STEP 10
STEP 10
* WARNING: The power switch located at the fro t of the
* WARNING: The power switch located at the fro t of the * WARNING: The power switch located at the fro t of the
* WARNING: The power switch located at the fro t of the exter al power supply
exter al power supplyexter al power supply
exter al power supply MUST be i the OFF positio
MUST be i the OFF positio MUST be i the OFF positio
MUST be i the OFF positio
prior to co ecti g
prior to co ecti g prior to co ecti g
prior to co ecti g the umbilical ca
the umbilical cathe umbilical ca
the umbilical cable a d
ble a dble a d
ble a d IEC power cables.
IEC power cables.IEC power cables.
IEC power cables.
* WARNING: NEVER i sert i to the exter al power supply or pull out a y power cords that
* WARNING: NEVER i sert i to the exter al power supply or pull out a y power cords that * WARNING: NEVER i sert i to the exter al power supply or pull out a y power cords that
* WARNING: NEVER i sert i to the exter al power supply or pull out a y power cords that are live
are live are live
are live
(e ergised). The power must be switched off at the socket whe power cords are i serted or removed from
(e ergised). The power must be switched off at the socket whe power cords are i serted or removed from (e ergised). The power must be switched off at the socket whe power cords are i serted or removed from
(e ergised). The power must be switched off at the socket whe power cords are i serted or removed from
the
the the
the exter al power supply
exter al power supplyexter al power supply
exter al power supply.
..
.
* WARNING:
* WARNING: * WARNING:
* WARNING: If the tur table sustai s damage due to a failure to comply with
If the tur table sustai s damage due to a failure to comply with If the tur table sustai s damage due to a failure to comply with
If the tur table sustai s damage due to a failure to comply with these i structio s,
these i structio s, these i structio s,
these i structio s, the cost of
the cost of the cost of
the cost of
repairs will ot be covered by
repairs will ot be covered by repairs will ot be covered by
repairs will ot be covered by the Döhma Audio Warra ty policy.
the Döhma Audio Warra ty policy.the Döhma Audio Warra ty policy.
the Döhma Audio Warra ty policy.
E suri g that you are complyi g with the war i gs a d i structio s stated above, co ect a suitable IEC
power cable to match your cou try’s sta dard to the IEC Power e try socket o the rear of the exter al power
supply box.
STEP 1
STEP 1STEP 1
STEP 11
11
1
Co ect the exter al power supply usi g the umbilical cord to the 5-pi socket at the rear of the Helix Two
tur table. Refer to the image below to ide tify the 5-pi socket:
Set the power switch o the fro t of the power supply to ‘ON’. The butto s o the fro t left-ha d side of the
tur table top plate will glow red. Press the butto o the left to activate the tur table to spi . Press the same
butto agai to stop the rotatio . O ce the rotatio has stopped, press the butto o the right a d check that
the table rotates. Press agai to stop.
STEP 1
STEP 1STEP 1
STEP 12
22
2
I stall the to earm as specified by the ma ufacturer.

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STEP 1
STEP 1STEP 1
STEP 13
33
3
Please Note: Before performi g this step, please check the level of the platter a d adjust the four chassis feet
accordi gly to achieve as horizo tal level as possible. Adjust the armboard - proper adjustme t is achieved
whe the armboard is level with the top surface of the platter.
Place a small bubble level o the armboard for verificatio . Adjust o e side at a time i small i creme ts.
Adjust the positio accordi gly by usi g the four small access holes o top of the tur table. These holes
accept a 4mm Alle wre ch (Hex key). Below these holes are four levelli g screws. Typically, o ly small ¼ tur
adjustme ts are required to level the armboard.
A key aspect of the Helix tech ology is the floati g armboard. Adjusti g these four screws raises the armboard
to a floati g positio which is mag etically damped. This allows the armboard to be additio ally isolated from
the chassis.
STEP 1
STEP 1STEP 1
STEP 14
44
4
Ge tly feel the armboard to co firm that it is free to move horizo tally side to side a d forward a d aft. The
purpose of this step is to check that the armboard u dercarriage adjustme t has bee successful. Repeat
Steps 12 a d 13 if required u til the armboard is level a d the u dercarriage cleara ce criteria are met.
S
SS
STEP
TEPTEP
TEP 1
11
15
55
5
Adjust the to earm a d cartridge as specified by the ma ufacturer.
Armboard
Adjustment
Screws

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Adjusti g the I ter al Suspe ded Chassis Height
The Helix Two tur table co tai s a Mi usK Negative Stiff ess Mecha ism (NSM) which is hidde i side the
table chassis. This is a state-of-the-art mecha ical reso a ce isolatio device that is i tegral to the tur table’s
performa ce.
With the to earm a d cartridge mou ted o the table, place a record o the platter a d the clamp to achieve
play back weight. Adjust the large thumbwheel o the left-ha d side of the top of the table by scrolli g the
wheel toward you to raise, or by scrolli g the wheel away from you to lower u til the platter is floati g
betwee the upper most a d lower most travel limits of the suspe sio (approx. ±5mm). This is the required
‘floati g’ positio for record playback.
A small LED Height I dicator light is displayed i the fro t pa el. The light should sit ear the middle of the slot
whe viewed from the fro t of the table. The light will move up a d dow as the suspe sio travel operates.
Adjust the thumbwheel o ly if the travel of the suspe sio is at the top or bottom of the travel limit whe
table is at rest. The total suspe sio travel available is approximately 10mm i total (approx. ±5mm).
If you depress the platter to the lowest limit of the suspe sio travel, you may hear a ge tle ‘clu k’ sou d.
This is othi g to be co cer ed about a d is simply a i dicatio that the suspe sio has reached the limit of
its dow ward travel ra ge.
Please Note:
Please Note: Please Note:
Please Note: Set
SetSet
Set-
--
-up assistance and complete service
up assistance and complete service up assistance and complete service
up assistance and complete service is
is is
is availa le worldwide through authorized dealer and
availa le worldwide through authorized dealer and availa le worldwide through authorized dealer and
availa le worldwide through authorized dealer and
representative network.
representative network.representative network.
representative network.
Thumbwheel
L D Height Indicator

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Operati g the Helix Two
There are two butto s o the left-ha d side of the tur table’s top plate.
For the purposes of these i structio s, we will refer to them as ‘Left Butto ’ (LB) a d ‘Right Butto ’ (RB)
To play a record at 33⅓ RPM, press the LB o ce.
To stop platter rotatio , press the LB o ce agai .
To play a record at 45 RPM, press the RB o ce.
To stop platter rotatio , press the RB o ce agai .
If you are already playi g at 33⅓ RPM a d you wish to play at 45 RPM, press the RB o ce.
To stop platter rotatio , press the RB o ce agai .
If you are already playi g at 45 RPM a d you wish to play at 33⅓ RPM, press the LB o ce.
To stop platter rotatio , press the LB o ce agai .
Speed Co trol
The tur table is calibrated at the factory to provide accurate speed performa ce. However, there are a
umber of factors that ca affect the accuracy of a tur table’s speed performa ce a d all tur tables should
be checked for speed accuracy whe serviced. The Helix Two Mk2 has speed co trol fu ctio ality, allowi g
the user to make fi e adjustme ts to achieve a highly accurate speed.
To access the speed co trol fu ctio ality, refer to the two speed co trol butto s located o the tur table’s
rear pa el. The top butto i creases the speed a d the bottom butto reduces the speed.
Please ote that to make super-fi e adjustme ts, press either the top speed i crease butto or the bottom
speed decrease butto o ce. Each click adjusts the speed 0.1RPM at the spi dle. Give that the spi dle to
platter ratio is approx. 1/10, each click is adjusti g the speed by 1/100
th
of a RPM. This is o ly practical for
very fi e adjustme t.

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For adjustme ts of a greater mag itude, press a d hold either the top speed i crease butto or the bottom
speed decrease butto for 5 seco ds. The speed will either i crease or decrease, depe di g o which butto
you are pressi g. Whe you are satisfied with the speed, do ot press a y butto s for 60 seco ds. At this
poi t, the ew calibrated speed will be stored i the tur table’s memory (ROM) a d will be the ew setti g
from that mome t o wards, eve if the power is tur ed off.
Please ote that the Helix Two is a ‘set a d forget’ desig , mea i g it has bee desig ed to hold its
performa ce parameters a d ot eed adjusti g, so it is very rare that a tur table will require a y speed
adjustme t but the fu ctio ality is there i the eve t that it’s eeded.
Each Tur table has a Serial Number
Each Döhma Audio Helix Mk2 tur table has a u ique Serial Number that is recorded i the ma ufacturer’s
database alo g with all of the i formatio pertai i g to that specific u it. The Serial Number starts with a
“DA” a d ca be fou d o the tur table’s ide tificatio tag o the right side of the rear pa el as show i the
image above.
Register your Tur table
If you have purchased a ew Döhma Audio Helix tur table as the first ow er, please register your tur table
o -li e by visiti g www.dohmannaudio.com , selecti g ‘Support
SupportSupport
Support’ or ‘Customer Care
Customer CareCustomer Care
Customer Care’ from the top me u, a d
selecti g ‘Warra ty Registratio
Warra ty RegistratioWarra ty Registratio
Warra ty Registratio ’. Please take a mome t to fill out the o li e form to e sure that your
tur table is registered i the Döhma Audio Warra ty Program.

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The Data & Exter al Power Port
Each Döhma Helix Two Mk2 has a Data a d exter al power port o the rear pa el. This port is used to
co ect the exter al power supply however ca also be used by a approved tech icia to facilitate the
tra sfer of data to the tur table’s electro ics (software upgrades, etc).
Helix Two Features
State-of-the-art custom desig ed Swiss-ma ufactured motor
Micro Sig al Architecture© (MSA)
Negative Stiff ess Mecha ism Vibratio Isolatio (NSM)
Mecha ical Crossover Tech ology (MCT)
Tri-Modal Platter system (TMP)
Edge Dampi g Ri g (EDR)
To e arm Dampi g System (TDS)
Reso a ce Tu ed Suspe sio (RTS)
Diamo d Like Coati g Amorphous Material Beari g Frictio Modifier (DLC)
High Torque Adjustable Drive (HTAD)
Facility for o e to earm

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Specificatio s
Top Plate
All Helix Two tur tables come with a black a odized alumi ium top plate as sta dard.
A carbo fibre top plate is available as a upgrade.
Armboard
All Helix Two tur tables come with a black a odized alumi ium armboard as sta dard.
Armboards are removable a d allow simple i tercha ge a d calibratio .
A Adva ced Composite Armboard is available as a upgrade.
To earm Mou ti g
The Helix Two tur table is capable of mou ti g o e to earm up to 12” (305mm).
Speed Co trol
Speed is co sta tly calibrated over 130,000 times per seco d to deliver precise 33.33 or 45.15 rpm
(factory default).
Default factory set speeds are: 33 RPM & 45 RPM
78 a d other RPM’s are available by request
Speed ca be adjusted via the use of the speed co trol adjustme t butto s located o the rear pa el
of the tur table.
Drive System
Fully i tegrated Swiss-ma ufactured high torque motor
Dual belt platter drive desig ed to reduce static electricity a d vibratio s.
Power Optio s
110-120 VAC, 50/60Hz 2A
220/240 VAC, 50/60 Hz 1A
Dime sio s
Dime sio s i millimetres: 480mm x Depth 400mm x Height 200mm
Dime sio s i i ches: 18.9” x Depth 15.8” x Height 7.9”
Weight
Combi ed shippi g weight is 70Kg (155 pou ds) i a custom road case.
Recomme ded i stallatio requires a surface capable of supporti g up to 60Kg (133 pou ds).

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Customer Support
Full customer support of Döhma Audio products is available worldwide through authorized dealer a d
represe tative etwork. This i cludes set-up a d performa ce optimizatio assista ce, service a d warra ty
support.
Please refer to your local Döhma Audio dealer with a y e quiries.
Co tact:
SEPEA audio
[email protected]
[phone] (E glish, Germa , Russia , Slovak, Czech)
Factory Co tact I formatio
Döhma Audio Pty Ltd
U it 2, 11 Friars Road
Moorabbi Victoria 3189
MELBOURNE, AUSTRALIA
Telepho e (Ge eral): [phone]
Telepho e (Factory Tech ical Support): [phone]
e quiry@dohma audio.com
Please Note:
Please Note: Please Note:
Please Note: Döhmann Audio products are manufactured in Australia.
Döhmann Audio products are manufactured in Australia.Döhmann Audio products are manufactured in Australia.
Döhmann Audio products are manufactured in Australia.