Cambridge Audio Turntable TT50 User Manual

TT50  
Turntable  
User’s manual  
2
 
TT50  
Limited warranty  
Safety precautions  
Cambridge Audio warrants this product to be free from defects in  
materials and workmanship (subject to the terms set forth below).  
Cambridge Audio will repair or replace (at Cambridge Audio's option) this  
product or any defective parts in this product. Warranty periods may vary  
from country to country. If in doubt consult your dealer and ensure that  
you retain proof of purchase.  
Checking the Power Supply Rating  
For your own safety please read the following instructions carefully  
before attempting to connect this unit to the mains.  
Check that the power supply unit indicates the correct supply voltage. If  
your mains supply voltage is different, consult your dealer.  
To obtain warranty service, please contact the Cambridge Audio authorised  
dealer from which you purchased this product. If your dealer is not  
equipped to perform the repair of your Cambridge Audio product, it can be  
returned by your dealer to Cambridge Audio or an authorised Cambridge  
Audio service agent. You will need to ship this product in either its original  
packaging or packaging affording an equal degree of protection.  
This unit is designed to operate only on the supply voltage and type that  
is indicated on the power supply unit. Connecting to other power sources  
may damage the unit.  
This equipment must be switched off when not in use. To reduce the risk  
of electric shock, do not disassemble any part of the unit. There are no  
user serviceable parts inside. Refer servicing to qualified service  
personnel.  
Proof of purchase in the form of a bill of sale or receipted invoice, which  
is evidence that this product is within the warranty period, must be  
presented to obtain warranty service.  
The lightning flash with the arrowhead symbol within an  
equilateral triangle is intended to alert the user to the  
presence of un-insulated ‘dangerous voltage’ within the  
product’s enclosure that may be of sufficient magnitude  
to constitute a risk of electric shock to persons.  
This Warranty is invalid if (a) the factory-applied serial number has been  
altered or removed from this product or (b) this product was not  
purchased from a Cambridge Audio authorised dealer. You may call  
Cambridge Audio or your local country Cambridge Audio distributor to  
confirm that you have an unaltered serial number and/or you purchased  
from a Cambridge Audio authorised dealer.  
The exclamation point within an equilateral triangle is intended  
to alert the user to the presence of important operating and  
maintenance instructions in the service literature relevant to  
this appliance.  
This Warranty does not cover cosmetic damage or damage due to acts of  
God, accident, misuse, abuse, negligence, commercial use, or modification  
of, or to any part of, the product. This Warranty does not cover damage due  
to improper operation, maintenance or installation, or attempted repair by  
anyone other than Cambridge Audio or a Cambridge Audio dealer, or  
authorised service agent which is authorised to do Cambridge Audio  
warranty work. Any unauthorised repairs will void this Warranty. This  
Warranty does not cover products sold AS IS or WITH ALL FAULTS.  
The crossed-out wheeled bin is the European Union symbol  
for indicating separate collection for electrical and electronic  
equipment. This product contains electrical and electronic  
equipment which should be reused, recycled or recovered  
and should not be disposed of with unsorted regular waste.  
Please return the unit or contact the authorised dealer from  
whom you purchased this product for more information.  
REPAIRS OR REPLACEMENTS AS PROVIDED UNDER THIS WARRANTY ARE  
THE EXCLUSIVE REMEDY OF THE CONSUMER. CAMBRIDGE AUDIO SHALL  
NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR  
BREACH OF ANY EXPRESS OR IMPLIED WARRANTY IN THIS PRODUCT.  
EXCEPT TO THE EXTENT PROHIBITED BY LAW, THIS WARRANTY IS EXCLUSIVE  
AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES  
WHATSOEVER INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF  
MERCHANTABILITY AND FITNESS FOR A PRACTICAL PURPOSE.  
Approvals  
This product complies with European Low Voltage  
(73/23/EEC) and Electromagnetic Compatibility  
(89/336/EEC) Directives when used and installed  
according to this instruction manual. For continued  
compliance only Cambridge Audio accessories should be used with this  
product and servicing must be referred to qualified service personnel.  
Some countries and US states do not allow the exclusion or limitation of  
incidental or consequential damages or implied warranties so the above  
exclusions may not apply to you. This Warranty gives you specific legal  
rights, and you may have other statutory rights, which vary from state to  
state or country to country.  
NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR  
TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO  
THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER  
AUTHORITY TO OPERATE THE EQUIPMENT.  
This equipment has been tested and found to comply with the limits for  
a Class B digital device, pursuant to Part 15 of the FCC Rules. These  
limits are designed to provide reasonable protection against harmful  
interference in a residential installation. This equipment generates,  
uses and can radiate radio frequency energy and, if not installed and  
used in accordance with the instructions, may cause harmful  
interference to radio communications. However, there is no guarantee  
that interference will not occur in a particular installation.  
If this equipment does cause harmful interference to radio or television  
reception, which can be determined by turning the equipment off and  
on, the user is encouraged to try to correct the interference by one or  
more of the following measures:  
- Re-orient or relocate the receiving antenna.  
- Increase the separation between the equipment and receiver.  
- Connect the equipment into an outlet on a circuit different from that to  
which the receiver is connected.  
- Consult the dealer or an experienced radio/TV technician for help.  
3
 
Important safety instructions  
Please take a moment to read these instructions before installing your  
TT50, as they will enable you to get the best performance and prolong  
the life of the unit. We advise you follow all instructions, heed all  
warnings and keep the instructions for future reference.  
Overloading  
Do not overload wall outlets or extension cord as this can result in a risk  
of fire or electric shock. Overloaded AC outlets, extension cords, frayed  
power cords, damaged or cracked wire insulation, and broken plugs are  
dangerous. They may result in a shock or fire hazard.  
Positioning  
Choose the installation location carefully. Avoid placing it in direct  
sunlight or close to a source of heat. Also avoid locations subject to  
vibration and excessive dust, cold or moisture. Do not place the unit on  
an unstable surface or shelf. The unit may fall, causing serious injury to  
a child or adult as well as serious damage to the product. Do not place  
other equipment on top of the unit. Do not install near any heat sources  
such as radiators, heat registers, stoves, or other unit (including  
amplifiers) that produce heat. No naked flame sources, such as lighted  
candles, should be placed on the unit.  
Lightning  
For added protection during a thunderstorm, or when it is left  
unattended and unused for long period of time, unplug the unit from the  
wall outlet and disconnect the antenna or cable system. This will prevent  
damage to the unit from lightning and power-line surges.  
Cleaning  
To clean the unit, wipe its case with a dry, lint-free cloth. Do not use any  
cleaning fluids containing alcohol, ammonia or abrasives. Do not spray  
an aerosol at or near the unit.  
Use only with cart, stand, tripod, bracket, or table specified by  
the manufacturer, or sold with the unit. When a cart is used,  
use caution when moving the cart/unit combination to avoid  
injury from tip-over. This unit must be installed on a sturdy,  
level surface. Do not place in a sealed area such as a  
bookcase or in a cabinet.  
Attachments  
Do not use attachments not recommended by your dealer as they may  
cause harm to the unit. Only use the specified attachments/accessories  
with this unit.  
WARNING - To reduce the risk of fire or electric shock, do not expose this  
unit to rain or moisture. This unit must not be used near water or  
exposed to dripping or splashing water or other liquids. No objects filled  
with liquid, such as vases, shall be placed on the unit. In the event,  
switch off immediately, disconnect from the mains supply and contact  
your dealer for advice. The unit can be used in moderate climate.  
Servicing  
Refer all servicing to qualified service personnel. Servicing is required  
when the unit has been damaged in any way, such as power-supply cord  
or plug is damaged, liquid has been spilled or objects have fallen into  
the unit, the unit has been exposed to rain or moisture, does not operate  
normally, or has been dropped. These units are not user serviceable,  
never attempt to repair, disassemble or reconstruct the unit if there  
seems to be a problem. A serious electric shock could result if this  
precautionary measure is ignored. In the event of a problem or failure,  
please contact your dealer.  
Electronic audio components have a running in period of around a week  
(if used several hours per day). This will allow the new components to  
settle down, the sonic properties will improve over this time.  
Grounding and polarisation  
Do not defeat the safety purpose of the polarized or grounding type plug.  
A polarized plug has two blades with one wider than the other. A  
grounding type plug has two blades and a third grounding prong. The  
wide blade or third prong are provided for your safety. If the provided  
plug does not fit your outlet, consult an electrician for replacement of  
the obsolete outlet.  
Contact the service department should any of these conditions occur:  
- When the power-supply cord or plug is damaged.  
- If liquid has been spilled, or objects have fallen into the unit.  
- If the unit has been exposed to rain or water.  
- If the unit does not operate normally after following the operation  
instructions, adjust only those controls that are covered by the  
operation instructions.  
Power sources  
The unit should be operated only from the type of power source  
indicated on the marking label. If you are not sure of the type of power-  
supply to your home, consult your product dealer or local Power  
Company.  
- If the unit has been dropped or damaged in any way.  
- When the unit exhibits a distinct negative change in performance.  
Power cord protection  
The unit must be installed in a manner that makes disconnection of the  
power supply from the mains socket outlet (or appliance connector from  
the rear of the unit) possible. Where the power supply is used as the  
disconnect device, the disconnect device shall remain readily operable.  
Protect the power cord from being walked on or pinched particularly at  
plugs, convenience receptacles, and the point where they exit from the  
unit.  
Be sure to insert each power cord securely. To prevent hum and noise, do  
not bundle interconnect leads with the power cord or speaker leads.  
4
 
TT50  
Assembly/setup  
Before using your TT50 for the first time it is necessary to remove the  
transit screws and fit the drive belt, platter and lid.  
2. Next fit the drive belt around the sub-platter and the smaller diameter  
part of the motor pulley (for 33rpm use).  
Please very carefully remove the parts separately from the packaging.  
Note: It is very important to avoid getting sweat or grease on the belt as  
these will deteriorate the performance and reduce the belt's lifespan.  
Use absorbant kitchen paper to remove any oil or grease from the outer  
edge of the hub and the belt if necessary.  
3. Fit the main platter over the spindle of the sub platter.  
Accessories (included)  
3
0
0
5
2
0.5  
4
1
0
Drive belt Hook Earthing lead  
Counterweight  
4. Fit the lid to the turntable, carefully over the hinge prongs and adjust  
the screws if necessary until the lid stays open where you want it to  
without being too stiff to open or close.  
L
R
Rear view  
5. Connect the supplied power supply unit.  
L
R
1. First remove the two red transport screws which secure the motor  
during transportation.  
6. Connect the TT50 using a RCA/phono to RCA/phono interconnect  
lead to an amplifier with either an internal or external phono stage.  
Always use the phono input (sometimes labelled Gram, Disc or RIAA)  
on your amplifier. Line inputs (such as CD, Tuner, Tape or Video) are  
not suitable. As the TT50 is supplied with a Moving Magnet type  
cartridge use either the input marked for MM phono on your amplifier,  
or switch your phono stage to MM mode.  
3
0
0
5
2
0.5  
4
1
0
Remove  
The earthing wire of the tonearm lead should be connected to the  
earth terminal on your amplifier (if provided).  
These protect the motor and its assembly by preventing it from moving  
around in transit. The screws must be removed before use to allow the  
motor to float on its suspension, this provides a level of isolation of  
between the motor drive and external vibrations and vice versa.  
If your amplifier does not have an input suitable for phono cartridges  
you will require a separate phono amplifier stage such as our Azur  
540P or 640P models which are then connected between the record  
player and a free line level input of the amplifier. For further  
information contact your Cambridge Audio dealer.  
Retain the screws so that they can re-fitted should you need to move the  
turntable in the future.  
Note: A Philips screwdriver is required.  
5
 
Assembly/setup continued  
Connection using phono stage  
2. Carefully rotate the counterweight until the armtube balances out, i.e.  
floats horizontally parallel to the surface of the turntable. The arm  
should return to the balanced position if it is moved up or down. This  
adjustment must be done carefully. Do not forget to remove the  
cartridge protection cap if fitted.  
TT50  
L
R
Phono Stage  
Amplifier  
3. Once the arm is correctly balanced return it to the rest. Hold the  
counterweight so it cannot rotate and your setting is not lost, and  
gently revolve the downforce scale ring only until the zero is in line  
with the white line. Check whether the arm still balances out.  
Connection using amplifier with built-in phono stage  
TT50  
L
R
4. Now rotate the whole counterweight and scale ring together counter  
clockwise (seen from the front) to adjust the downforce according to  
the cartridge manufacturer's recommendations. One mark on the  
scale represents 1 mN (0.1g) of downforce.  
Amplifier with phono stage  
Note: The recommended downforce for the factory fitted cartridge is  
20mN / 2.0g.  
7. Carefully remove the protective cover from the supplied cartridge.  
Anti-skating (bias) adjustment  
The TT50 features a magnetic anti-skate which applies a non contact  
force to the arm to counter-act the natural force applied by the record as  
the stylus is forced towards the center of the spiralling groove.  
Cartridge downforce adjustment  
The supplied counterweight is suitable for cartridges weighing between  
3.5 and 5.5g.  
An alternative counterweight for cartridges weighing between 6 - 9g is  
available as an accessory part, contact your Cambridge Audio dealer if  
you need this part.  
The anti-skate adjustment has been designed so that it is matched to  
the tracking force adjustment (higher tracking force requires higher anti-  
skate) and should be set to the same numerical value.  
Before adjusting the downforce, first set the anti-skating adjustment to  
zero.  
Setting the correct anti-skate ensures that the average pressure on both  
sides of the stylus is equal for best stereo separation and tracking  
ability.  
3
0
0
5
Turn the dial anti clockwise to apply magnetic anti-skate so that the  
metal pin indicates the same reading as the downforce setting  
previously set.  
2
0.5  
4
1
0
2
0.5  
4
1
0
Note: The anti-skate for the supplied cartridge is 2.0g. This is not a  
critical setting and an accuracy of +/- 0.5g is usually quite sufficient.  
2
0.5  
1. Gently push and turn the counterweight onto the armtube stub. Lower  
the armlift and position the cartridge in the space between arm rest  
and platter.  
4
1
0
Your turntable is now ready for use.  
6
 
TT50  
TT50 features  
Top view  
7
30  
0
5
1
2
0.5  
4
1
0
8
3
4
2
5
9
6
1
10  
11  
13  
14  
12  
1
Transportation screws  
Rear view  
Marked red, to be removed before use. See ‘Assembly’ section for more  
information.  
15  
2
Drive pulley  
Two levels for 33rpm and 45rpm.  
17  
16  
20  
Motor  
3
L
R
18  
21  
4 Drive belt  
19  
5
15  
Sub platter  
Lid  
Turntable cover.  
6
Acrylic main platter  
Removable to allow changing speed by moving the belt on the pulley.  
16  
17  
18  
Lid hinges  
Hinge fasteners  
Power supply socket  
7
Tonearm counterweight  
Used to adjust tracking force (downforce).  
The turntable is supplied with a 16V AC power supply suitable for your  
country's mains supply. Check the label before connecting to ensure  
compliance with the mains rating in your home.  
8
Anti-skate  
Uses to adjust anti-skating force.  
Note: Connect the low voltage plug from the power supply to the socket  
on the rear of the record player before connecting the power supply to  
the mains.  
9
Tonearm lift lever  
Raises and lowers the arm onto the record to be played.  
10  
Tonearm rest  
19  
Signal output sockets  
The turntable must be connected to a RIAA/Phono Stage or Amplifier  
with built in RIAA/Phono Stage by a stereo RCA/PHONO lead.  
11  
Tonearm  
12  
On/Off switch (underside)  
20  
Grounding terminal  
Starts and stops the motor.  
Connect to the grounding/earth post of your Phono Stage/Amplifier.  
13  
14  
Headshell with finger lift  
21  
Isolation feet  
Fitted Audio Technica AT95E MM cartridge  
7
 
Operating instructions  
Cartridge replacement/adjustment  
IMPORTANT!  
Playing records  
The TT50 is compatible with 33 1/3rpm and 45rpm records between 7”  
and 12”.  
The TT50 record player is supplied with a factory fitted and adjusted  
Audio Technica AT95E Moving Magnet cartridge fully aligned and setup  
at the factory. The following instructions for adjusting the cartridge are  
provided in case the cartridge is replaced by a different model at a later  
date.  
Place the record over the spindle holding the record only by its  
outermost edge.  
Before playing it is a good idea to clean the record using an appropriate  
cleaning brush designed specifically for use with records, we particularly  
recommend the type with soft carbon fibre bristles which also reduce  
static charge on the record surface.  
It is not necessary to adjust the factory fitted cartridge.  
The supplied cartridge has a lifespan of approximately 1000-1500  
hours.  
Move the arm so that the stylus is over the start of the record and then  
switch the motor on. Now use the tonearm lift lever to lower the stylus  
onto the record.  
The stylus assembly is removable for servicing. To replace the stylus  
firmly grip the green plastic stylus assembly as shown and pull it  
downward, replace with part number ATN95E.  
When finished lift the stylus from the record using the tonearm lift lever  
before turning the motor off. Return the arm to the tonearm rest.  
Always return records to their sleeves to prevent dust from being  
collected by the record due to static attraction.  
Changing replay speed  
To play records at 45rpm first remove the platter, and using the  
accessory tool provided, hook the belt over the larger diameter part of  
the motor pulley. Refit the platter. To revert to 33rpm repeat the  
procedure using the smaller step on the pulley.  
Fitting of a replacement stylus or whole new cartridge is best left to a  
dealer as the stylus and its cantilever are very fragile and adjustment of  
a new cartridge is somewhat fiddly.  
Cartridge fitting  
All cartridges with half inch mounting holes can be fitted. Leaving the  
needle's protection cover on, fit the cartridge to the headshell using the  
screws supplied with the cartridge by passing one screw through each  
slot in the headshell. Do not tighten the nuts yet. The supplied  
counterweight is suitable for cartridges weighing between 3.5 and 7g.  
An alternative counterweight for cartridges weighing between 6 - 10g is  
available as an accessory part, contact your Cambridge Audio dealer if  
you need this part.  
Connect the tonearm wires to the cartridge pins as follows.  
3
0
0
5
2
0.5  
4
1
0
Maintenance and cleaning  
L
R
Your record player requires little or no regular maintenance. Remove  
dust with a slightly moistened antistatic cloth. Never use a dry cloth  
because this will create static electricity which attract more dust!  
Antistatic cleaning fluids are available at specialist stores but must be  
applied sparingly to avoid damage to rubber parts. It is recommended to  
fit the stylus cover before cleaning or maintenance is carried out to avoid  
damage.  
Cartridge rear view  
White - Left channel positive (L+)  
Red - Right channel positive. (R+)  
Green - Right channel return (R -)  
Blue - Left channel return (L -)  
If the player is not used over a long period of time the drive belt can be  
removed to prevent unequal stretching.  
Note: Always disconnect the record player from the mains power supply  
as a precaution before maintenance!  
8
 
TT50  
4. Now turn the platter by hand and place the stylus tip at position B.  
Again look directly from above to see if the cartridge body sides are  
parallel to the lines on the protractor.  
Cartridge alignment  
Because a normal tonearm pivots about its bearing point as it traverses  
a record, the angle between the cartridge body and record groove will  
gradually vary as the record is played.  
The idea of cartridge alignment is to minimise this inherent error. A  
simple alignment protractor is included in this manual to facilitate this.  
Note: The TT50 is fully aligned at the factory for the supplied AT95E  
cartridge and does not require this adjustment to be made unless a new  
or different cartridge is fitted.  
The supplied protractor allows the error to be adjusted out at two critical  
positions on the record surface (63mm and 120mm radius) in such a  
way that then minimises the error at all other positions. The protractor is  
simply cut out from the manual and placed on the turntable as  
described, a printable version is also available for download on the  
Cambridge Audio website at: www.cambridgeaudio.com/support.php  
5. If the cartridge body sides are not parallel to the lines on the  
protractor, move the cartridge body back in the headshell a little (a  
millimetre or so).  
The procedure is as follows:  
1. Move your cartridge to the front-most position possible in the  
headshell as shown.  
6. Lift the tone arm up and turn the platter by hand to go back to  
position A, realign the cartridge body so that it is again parallel to the  
lines on the protractor without moving it back or forwards in the  
headshell (i.e. try to rotate the body only).  
2. Using a scalpel or similar, cut the dotted line where the hole shown  
on the Alignment Protractor and place it over the turntable spindle.  
The Alignment Protractor is located in the ‘Technical specifications’  
section of this manual.  
The cartridge protractor can also be photocopied or downloaded from  
our website and printed. After copying/printing always check the mm  
measurement reference scale against a ruler which then makes sure  
your protractor is accurate. Copiers and printers can sometimes slightly  
distort the images they print, so if you find this to be the case make  
adjustments to the copier or print scaling and reprint until the scale is  
correct.  
7. Again lift the tone arm and turn the platter by hand then place the  
stylus tip back at position B. Again look directly from above to see if  
the cartridge body sides are now parallel to the lines on the  
protractor.  
8. If not, move the cartridge body back in the headshell by another  
millimetre or so and repeat the procedure.  
The idea is to find the position in the headshell front to back that allows  
adjustment of the cartridge so that its sides are parallel to the lines on  
the protractor at both positions A and B.  
Cartridge downforce adjustment  
Refer to the 'Assembly/setup' section of this manual.  
3. Turn the platter gently by hand so that you can carefully rest the  
stylus tip exactly on the cross at position A. Looking directly from  
above carefully rotate the cartridge body so that its sides are parallel  
to the protractor lines as shown.  
Note: Lift the tone arm before turning the platter to avoid damaging the  
the needle/stylus.  
9
 
Cartridge replacement/adjustment continued  
Adjusting the azimuth  
The cartridge needle must be vertical in the record groove in order to  
trace the groove wall modulations correctly.  
Anti-skating (bias) adjustment  
Refer to the 'Assembly/setup' section of this manual.  
A small screw at the bearing end of the arm allows incorrect azimuth to  
be corrected if your needle is not mounted exactly perpendicular to the  
cartridge body (which can be the case).  
1. Slacken off the screw just enough to be able to revolve the arm tube  
without applying force.  
Side view  
Note: Do not remove the screw completely!  
2. With the aid of a good magnifying glass adjust the needle until it is  
vertical in the groove (i.e. perpendicular to the record's surface).  
Ideally this should correspond to the top surface of the cartridge body  
being parallel to the record surface. When you are satisfied that the  
needle is vertical, retighten the screw carefully.  
Under no circumstances should the arm tube be adjusted with the  
needle still in the record groove! Irreparable damage may be caused to  
the cantilever suspension! The arm must be lifted to make each  
adjustment and lowered afterwards to check it.  
10  
 
TT50  
Technical specifications  
Troubleshooting  
Turntable  
Nominal speeds  
The platter doesn't turn although the unit is switched on  
The unit is not connected to the power supply unit.  
33 1/3 or 45rpm  
Speed variance  
0,8 %  
No mains at the socket.  
Wow and flutter  
0,12 %  
Drive belt is not fitted or has slipped off.  
Signal to noise ratio  
Downforce range  
Effective tonearm length  
Overhang  
<-65dB  
1.0 to 3.0g (10 - 30mN)  
218.5mm (8.6")  
No signal through one or other channel or both  
channels  
18.5mm  
Possible Wiring fault. Check that there are connections from the  
cartridge to the internal tonearm wiring, and the turntable output to  
your phono stage/amplifier.  
Outboard power supply  
16V AC @ 500mA.  
EU, UK and Canadian/US versions available  
2W  
Power consumption  
Phono input not selected at amplifier.  
Phono stage not switched on.  
Dimensions (W x H x D)  
415 x 118 x 320mm, lid open  
415 x 365 x 405mm, lid closed  
5.5kg approx. unpacked  
Standard ½“  
Weight  
Amplifier not switched on.  
Tonearm mount  
Amplifier or speakers defective or muted.  
No connection to the loudspeakers.  
Cartridge (supplied)  
Model  
Audio Technica AT95E  
Moving Magnet  
Strong hum on phono input  
No earth connection from turntable to amplifier.  
Type  
Stylus  
0.4 x 0.7 mil elliptical diamond on  
aluminium tube cantilever  
(replacement part ATN95E)  
1000-1500 hours  
Turntable or Phono stage placed too close to transformers or other  
generators of magnetic fields.  
Lifespan  
Distorted or inconsistent sound from one or both  
channels  
Record player is connected to wrong input of amplifier.  
Recommended load resistance  
47kohms  
Recommended load capacitance 100 -220 pF total (inc. arm lead)  
MM/MC switch on amplifier incorrectly set.  
Stylus/needle or cantilever damaged.  
Wrong rpm used for record.  
Frequency response  
Channel separation  
Channel balance  
VTA  
20Hz - 20kHz +/- 3dB  
> 22dB @1kHz  
< 2dB  
20 degrees  
Drive belt overstretched or dirty.  
Tracking force range  
Recommended tracking force  
Nominal output voltage  
Mass  
1.5 to 2.5g (15mN - 25mN)  
2.0g (20mN)  
Platter bearing without oil.  
3.5mV (@ 1kHz, 5cm/sec)  
5.7g  
Bad connections, plugs not fully pushed home.  
Tracking force and/or anti-skate incorrectly adjusted.  
The cartridge protractor can also be photocopied or downloaded from  
our website and printed. After copying/printing always check the mm  
measurement reference scale against a ruler which then makes sure  
your protractor is accurate. Copiers and printers can sometimes slightly  
distort the images they print, so if you find this to be the case make  
adjustments to the copier or print scaling and reprint until the scale is  
correct.  
For more frequently asked questions (FAQs), technical advice and  
information on getting the most out of your TT50, please visit the  
Support section on Cambridge Audio’s website:  
Measurement reference - mm  
Measurement reference - mm  
Cartridge alignment protractor  
Cartridge alignment protractor  
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A
B
63mm  
63mm  
112200mmmm  
11  
 
Cambridge Audio  
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London SE1 4BB  
England  
© 2007 Cambridge Audio Ltd  
 

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