The Avro Tone Arm Installation Guide VTA Pod

TTW Audio
www.ttweights.com
LJT Manufacturing
www.ljtmfg.com
Direct Line: 905 953 7923
Plant Floor: 905 953 7772
The Avro Tone Arm Installation Guide
VTA Pod Installation Guide
Avro Tone Arm Installation Guide
The Avro tone arm is a very simple installation; the following parts are shipped in this configuration:
1 – The VTA Pod (optional) Non VTA Pod is standard
2 – The Main Tone Arm Assembly
3 – The VTA Indicator
4 – The counter Weight
5 – The head Shell
6 – The Set up Jig
7 – Optional Cable
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Avro Tone Arm Installation Guide
1
1
2
2
VTA HANDLE provides accurate and simple
and quick VTA adjustments. Turn
CLOCKWISE to lower VTA arm height.
3
VTA LOCK SCREW is locked / unlocked by
finger pressure. NO TOOLS!
4
The massive optimally dome shaped arm
tower is machined from SOLID Surgical 303
Stainless Steel for optimal rigidity and
absolute control of resonance.
5
The super accurate variable ANTI SKATE
HANDLE is set by rotating the dial
6
Stainless VTA Piston and massive arm base
4
5
6
3
The removable Dial Indicator provides dead
accurate tone arm height positioning also
providing marked positions for thin to thick
records (Std/180/200 gram).
Copper OIL Bearing Damper
Precision Gimbal Bearings with tuned
aluminum S shaped (for rigidity)arm tube
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Avro Tone Arm Installation Guide
The TTW Remote Arm Pod Systems
Non VTA Standard Pod System
The standard arm pod is not adjustable simply install the tone arm and cable as shown and use the tone arm VTA to set
the initial VTA with the jig provided. All VTA adjustments are done with the tone arm VTA handle as shown below.
Install the tone arm as per instructions on Install Main Arm Assembly to Arm POD
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Avro Tone Arm Installation Guide
Avro VTA Pod Systems
Note: The VTA POD is used to rough set the height of the tone arm. The VTA should be adjusted from the tone
arm VTA system using the indicator as the instructions will outline. If you have purchased the Graham Tone
Arm without VTA then “On the Fly VTA” System will apply, thanks
Any disassembly of the tone arm base, pod, pod cap or tone arm will VOID all warranties. If in doubt email
[email protected]
The VTA pod may be used in two configurations the standard AVRO set up is configuration One, the AVRO tone arm has
built in “On the Fly” height adjustments. The Option Two Graham configuration provides on the Fly VTA adjustment. The
TTW Graham tone arm does not have a dial VTA system and requires the VTA pod.
Standard Avro Manual Movement of VTA Piston
The Manual VTA piston allows a very long travel and the tone arm is initially set using the manual movement of the piston
as shown.
Configuration Two: “On the Fly VTA System”
Graham Tone Arm Only: Fine VTA adjustment of pod height providing stable “On the Fly” very small
adjustments.
The VTA on the fly POD will be factory set with the turntable you have purchased. The POD is factory configured and is
preset to the correct height and all that needs to be done is fine adjustment after the arm is set up using the setting jigs.
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Avro Tone Arm Installation Guide
Avro: Manual Movement of VTA Piston
Note: The standard provides a long range of adjustments and will only be used for initial
arm height set up.
1
Lowest Position
1
You may remove one of the THREADED PLUGs on either side of the pod. The arm
pod will move easier for adjusting. If the plug is left in place the piston will move
slowly but this is the safest way to move the arm.
2
Assure the top and bottom screw are unlocked with a 3/32 Allen key
2
Highest Position
3
Move arm pod piston as shown by holding the cap and gently lifting up or down to the
desired position.
You must lock the two locking set screws before you release the arm piston to lock the
piston at the correct height.
Do not attempt to unlock the center screw it is a fixed set screw.
3
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Avro Tone Arm Installation Guide
Skip for AVRO - Using the Graham Configuration Two: “On the Fly VTA System”
1
1
The VTA “Knob”
Note: The standard On the Fly VTA height is factory set, this is a guide
for upgrading your Tone Arm Pod and or if you have purchased the
optional VTA System at any time.
To installing the VTA Knob move the piston to the highest position and lock the two set
screws as described in the previous section.
2
Simply remove the threaded plug with a ¼ inch Allen key and thread the VTA Screw all
the way in (clockwise) until the VTA knob stops. Note the gap, when the VTA handle is
turned you will see very fine movement here. The POD VTA Knob DOES NOT
change the indicator dial this system moves the entire arm assembly upwards and
downwards. This feature is designed for super fine listening tuning and may be
adjusted while the record is playing. Clock wise moves the arm assembly upwards.
3
NOTE: Do not unscrew the Knob any more than three turns after you see the thread
as shown.
2
3
In the event you mistakenly unscrew the VTA knob all
the way out no harm will come to the tone arm,
simply follow the procedure as we have described and
re install the VTA knob.
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Avro Tone Arm Installation Guide
AVRO - Install Main Arm Assembly to Arm POD - Please do not remove the Arm Tie
Hold the tone arm assembly as shown and slide into
VTA bushing. Assure the VTA lock screw is unlocked
for the moment.
1
The VTA handle thread should line up to the VTA
receiver post as shown.
2
The tone arm will only fit as shown, simply look at the
VTA lock screw and it should line up the slot in the VTA
Bushing.
(Picture below) Turn the VTA knob clockwise to thread
the handle in to the VTA Post. Turn the handle
3
approximately 1 turn just to start the thread.
2
1
3
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Avro Tone Arm Installation Guide
PLEASE NOTE: The VTA screw line up to
the post –that is located on the tone arm
base. Turn the VTA screw clockwise until
the thread starts and gently screw it down.
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Avro Tone Arm Installation Guide
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Avro Tone Arm Installation Guide
Install Tone Arm cable
The arm is in the Highest VTA position to provide access to
the tone arm cable.
Align the DIN connector PIN in the tone arm cable as shown
and press tone arm cable in to DIN plug as shown. Assure
the cable is pushed in all the way.
1
See picture below for PIN position looking from underside of
tone arm base, the cable should line up to the slot.
2
1
2
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Avro Tone Arm Installation Guide
1
Once the cable is installed turn the VTA handle another 5 turns approximately ½
into the VTA Post as shown, no need to lock the VTA at this point.
1
Setting Tone arm Position and Basic VTA (Based on an 18.5 mm Cartridge
Height - See chart Page 11)
Assure the top and bottom screw are unlocked with a 3/32 Allen key.
2
Do not attempt to unlock the center screw it is a fixed set screw.
This provides the rough set VTA (next page) and also allows the use of
different thickness platter
The VTA piston will now move up and down ½ an inch by hand as shown.
The piston rides on an air cushion and will move slowly with some resistance
for accurate positioning.
2
3
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Avro Tone Arm Installation Guide
Gently place the center JIG spindle adaptor on the platter as
show.
2
1
Position the arm until the JIG locates on the top spigot of the
tone arm and the spindle adaptor line up with the matching
holes on the JIG. This sets the arc position very accurately
1
2
Hold the VTA piston as shown and move up or down to set
the VTA as level as possible, fine tuning will be done with the
VTA screw.
3
Relock the top and bottom screw with a 3/32 Allen key
holding the piston place until locked.
3
The tone arm is now positioned and the VTA is set at 91
degrees (plus or minus a little) and this is generally the starting point of final VTA adjustments.
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Avro Tone Arm Installation Guide
Fine Adjusting the Initial Tone Arm VTA
Unlock the VTA Lock Screw turning counter clockwise just ¼ turn.
1
Turn the VTA adjustment handle counter clockwise to raise the arm and clockwise to lower the arm. Adjust carefully and
when the jig bubble is level lock the VTA Lock Screw.
Once the basic VTA is set install the Dial Indicator by sliding it in to the receiving hole all the way down and then move the
indicator slight upward until the dial reads “0”
ALWAYS TIGHTEN THE VTA LOCK SCREW BEFORE PLAYING.
ALWAYS LOOSEN BEFORE ADJUSTING. ON THE FLY
ADJUSTMENT IS POSSIBLE TO THE CHANCE OF DAMAGING
YOUR STYLUS IS REAL – IF YOU SLIP.
2
1
3
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3
Avro Tone Arm Installation Guide
See next page for Cartridge Heights
How to use the indicator –Using the chart helps
understand actual movements of the arm height and
the corresponding changes in angles of SRA/VTA.
The dial can be rotated also to set the zero, simply
unlock the bezel lock screw , and turn the black
outside bezel ring to set a zero and lock the screw.
The two preset points are moved by simply sliding
them around the circle and may be used for record
heights and or changes you have made.
1
2
1
2
2
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Avro Tone Arm Installation Guide
Ortofon cartridges dimensions chart F being the cartridge Height
Knowing the fundamental cartridge dimensions will in a lot of cases make it easier to mount and align cartridge and
tonearm correctly
CARTRIDGE MODEL
A
B
C
D
E
F
2M Series
12.7 mm
18.5 mm
M 2.5 mm
24 mm
9.5 mm
18 mm
OM Series
12.7 mm
16 mm
Ø 2.6 mm
24 mm
9.5 mm
18 mm
MC High Output
12.7 mm
16 mm
Ø 2.6 mm
20.5 mm
9.5 mm
18.5 mm
MC Vivo Series
12.7 mm
16 mm
Ø 2.6 mm
22.5 mm
9.5 mm
18.5 mm
MC Dance Series
12.7 mm
16 mm
Ø 2.6 mm
22.5 mm
9,5 mm
18.5 mm
MC Rondo Series
12.7 mm
17 mm
M 2.5 mm
23.5 mm
7 mm
20 mm
MC Cadenza Series
12.7 mm
18.5 mm
M 2.5 mm
19.5 mm
9.5 mm
18 mm
MC Windfeld
12.7 mm
18.5 mm
M 2.5 mm
19.5 mm
9.5 mm
18 mm
MC A90
12.7 mm
16.85 mm
M 2.5 mm
20.7 mm
9.2 mm
19 mm
MC Kontrapunkt
Series
12.7 mm
18.5 mm
M 2.5 mm
19.5 mm
9.5 mm
18 mm
MC Jubilee
12.7 mm
18.5 mm
M 2.5 mm
19.5 mm
9.5 mm
18 mm
MC Valencia
12.7 mm
18.5 mm
M 2.5 mm
19.5 mm
9.5 mm
18 mm
MC 20 Super
12.6 mm
17 mm
Ø 2.6 mm
23.5 mm
8.5 mm
19 mm
11 mm
19 mm
9.4 mm
19.2 mm
SPU Royal N
mounted on the SPU
N adaptor
MC Quintet Series
17.7 mm
12.7 mm
17 mm
M 2.5 mm
23.1 mm
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Avro Tone Arm Installation Guide
A - distance between centres of mounting holes
B - cartridge width
C - mounting holes diameter
D - cartridge length
E - distance from stylus tip to the centre of mounting holes
F - the height from stylus tip to top cartridge mounting surface
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Avro Tone Arm Installation Guide
Horizontal Balancing and Tracking Force
Remove the tone arm tie at this stage. Please note always keep the stylus guard in place when
making any changes.
Horizontal Balance
Mount the shell/cartridge onto tonearm, suitable cartridge self weight is 4 – 12gr (Up to 20
with heavier counter weight)
1
Thread the counterweight on to the back of the arm and adjust counter weight by turning it
until the tonearm floats approximately/ horizontal to the turntable and the baseboard.
Turn the dial on the weight to set to “0”
2
1
2
Note: A new Counter Weight is being developed, there are currently two version, the one with the o-rings on the
outside is lockable with the set screw, the other standard weight turn and stays in place with a spring loaded ball on
the arm shaft.
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Avro Tone Arm Installation Guide
Stylus Pressure
1. Turn the stylus pressure adjustment ring to “0” as shown above
2. Move the counter weight forward by turning it until its indicator points to the recommended stylus pressure.
3. The AVRO Arm should be used with a digital stylus gauge for accurate results, the incremental lines will be
accurate within +/-.2 grams only******************
4. Once final position is achieved lock the counterweight as shown
We recommend the use of a digital stylus gauge for better results.
Azimuth Adjustments
1
Unlock the Azimuth screw and the headshell can be rotated until
the azimuth is correct, parallel from the front view as shown..
1
2
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Avro Tone Arm Installation Guide
Anti-Skating Adjustment
When a vinyl record spins, the stylus riding in the groove is pulled in
toward the center of the vinyl, causing a greater stylus pressure
against the outside wall of the groove than against the inside wall.
In order to counter this pressure, an anti-skating mechanism is
incorporated in the tonearm.
It is calibrated from 0 to 3gr in 0.5gr increment corresponding with
the same calibration for somewhat less of the stylus pressure.
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Avro Tone Arm Installation Guide
Installing Your Own Cartridge with the Alignment Protractor
Supplied.
1 –Line up the A-A line with the pivot point of the tone arm with the
ruler by eye, rough position
1
2 – Line up tone arm (move pod) to match the cross hairs. There are
the two common methods, try each; the Lofgren (L) or Baerwald (B) they are slightly
different alignment theories but both work well. Move the spindle point and set the
tone arm to the corresponding cross hairs.
Align the zenith by loosening the screws and rotating the cartridge until the front
face parallel to the cross hairs and make sure you align the stylus tip to the cross
hairs as shown.
The huge advantage of the remote pod is the cartridge does not have to be adjusted
to set the final position relative the grid lines. The final fine adjust can be done by
gently moving the arm pod.
2
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Avro Tone Arm Installation Guide
All Products of TTWeights, trade names, names, product names, logos and designs are Copyright.
TTWeights / LJT Manufacturing and Consulting Limited Warranty
TTWeights / LJT Manufacturing and Consulting (TTW) is providing a warranty for this unit against defects in materials and/or
workmanship for four (4) years from the date of purchase by the original retail purchaser. TTW’s sole obligation under this warranty
is limited to the repair or replacement, at TTW’s option, of any part(s) found to be defective. TTW’s obligation to repair or replace
defective parts is the purchaser’s sole and exclusive remedy, and TTW’s shall not be liable for any injury and/or property damage,
direct or indirect, arising out of the use of the product or defect in or failure of the product. This warranty does not extend to any
product/turntable whose serial number has been defaced or altered. Any product that TTW determines to cause a defect or
malfunction due to incorrect installation, modification, misuse, or servicing by the purchaser or service technician not authorized by
TTW to perform such service will not be warranted. This warranty does not cover trivial or cosmetic defects that do not impair the
unit’s normal function. TTW reserves the right to make engineering changes to this product without assuming any obligation to
install such change in any product previously manufactured. This warranty to repair or replace defective parts is in lieu of all other
express or implied warranties of merchantability or fitness for a particular purpose. There are no warranties that extend beyond the
description herein.
Product is subject to change without notice due to continuous research and development.
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