American Audio TURNTABLE HTD 45 User Manual
Have a look at the manual American Audio TURNTABLE HTD 45 User Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 120 American Audio manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
SET-UP
Turntable Installation:
1. Do not place the unit in a location where it will be exposed to direct sunlight or near any type of
heating appliance.
2. Do not place the unit in a location where there is high humidity or a lot of dust.
3. Cartridge may pick up slight sound pressure or vibrations of near by speakers. For best results,
do not install this unit too close to speakers.
4. Install this unit on a horizontal surface that is stable and vibration free.
5. The rubber feet have been specially designed to isolate the unit from excess vibration. The feet
may also be used to stabilize the main body horizontally. Adjust the height of the unit by turning
the feet in a clockwise or counter-clockwise direction.
Tonearm Balance and Stylus Pressure:
Adjustment of horizontal zero balance and stylus pressure:
1. Remove the stylus protective cover, if so equipped. Never touch the stylus tip during the adjust
ment.
2. Lower the Tonearm Lever (24).
3. Release the tonearm clamp and release the tonearm from the arm rest.
4. Set the Anti-Skate(26) adjustment to zero.
5. Rotate the Counterweight(27) in either direction until the Tonearm(2) is perfectly balanced
horizontally (floats freely).
6. Return the Tonearm(2) to the arm rest and lock it in place.
7. Hold the Counterweight(27) stationary with one hand and rotate only the stylus-pressure ring to
bring the number “0” of the ring into alignment with the center line on the tonearm rear shaft.
8. Rotate the Counterweight(27) clockwise until the scale value corresponding to the recommended
stylus pressure.
Note: The recommended stylus pressure of the optional cartridge that may have been includ-
ed with your unit is 2 grams. For all other cartridge systems please refer to the manufactures
specification included with the cartridge.
Anti-Skate:
The anti-skate adjustment prevents the Tonearm Assembly (2) from skipping across the record from
the centrifugal force that is caused spinning rotation of the Platter (1). The Anti-Skating (26) control
knob should be set to the same value as the stylus pressure. For example if your Counterweight (27)
is set to 2.5 grams the Anti-Skate (26) value should also be set to 2.5.
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 11
CONTROLS AND FUNCTIONS
1. Platter - This platter connects directly to the center spindle
(16). The platter and center spindle (16) holds a vinyl
record perfectly center. The platter also spins the
record at a consistent speed.
2. Tone Arm Assembly - This assembly will be explained in tonearm section
on the page 15.
3. Pitch Adjust Slider - This slider is used to adjust the playback pitch
percentage (platter speed) when the Quartz Lock (4)
function is inactive. Use this slider to match the
BPM’s of this unit to that of another music source.
4. Quartz Lock Select Button - This button is used to turn the pitch function on and
off. When the Quartz function is activated the platter
will hold the RPMs at 0% pitch, regardless of the
Pitch Slider (3). When the quartz function is inactive
the Pitch Slider (3) may be used to manipulate plat-
ter speed.
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 12
15
16
18
1
2
3
5
6789101112
13
14
4
17
5 & 6. Pitch Select Button - This button is used to change the pitch value. The
pitch percentage can be changed between 10%,
20% and 50%. 10% will allow the least amount of
pitch manipulation and 50% will allow the most
amount of pitch manipulation. Pressing the button's
will toggle between the two pitch modes. An LED will
indicate which pitch percentage mode is activated.
Note, the Quartz Lock (4) function must be turned off
in order for the pitch function to operate.
Special Note: As stated above the turntable also has a pitch percentage value of 50%. To activate the
50% pitch value press and hold both the +/- 10%(6) and +/- 20%(5) pitch values until both the their
respective LED's turn on.
7. Reverse Rotation Selector Button - The turntable has the ability to play records in
r everse. Simply press the button at any time to acti-
vate this function. The function LED will glow when
activated. To deactivate the reverse function, press
the button again.
8. Stop Control Knob - By adjusting the brake control knob, you can control
the time the turntable takes to come to a complete
stop.
9. Start Control Knob - Using the Start Control Knob, you can adjust the
time it takes for the turntable to get up to full RPM.
10. Target Light - The target light is designed to light up the stylus
in a dark environment for proper stylus positioning.
NOTE: When storing the turntable remove the
target light.
11. 45-rpm Speed Selector Buttons - Engaging this button will rotate the platter at 45
RPMs. A function LED will glow when this function
is activated.
12. 33-rpm Speed Selector Button - Engaging this button will rotate the platter at 33
revolutions per a minute (RPMs). A function LED will
glow when this function is activated.
Special Note: The platter has the ability to rotate at 78 RPMs. This is an outdated function that is
rarely used. To activate the 78 -RPM function press and hold both the 33 (12) and 45 (11) RPM selec
-
tors until both the their respective LED turn on.
13. START/STOP Button - This over sized push button controls platter
motion. When the unit is turned on the platter will not
automatically begin to spin. Pressing the button
once will engage the high torque motor and spin the
platter, pressing this again will stop the platter.
CONTROLS AND FUNCTIONS
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 13
14. Power Switch - This is a rotary power switch. To turn main power on
turn the switch in a clockwise direction. To turn main
power off turn the switch in counter-clockwise
direction.
15. Strobe Indicator Pilot Lamp - This is specially designed to pulse a beam of light at
the strobe indicators (17) on the turntable platter.
This will give the illusion that indicators are not
spinning at certain speeds.
16. Center Spindle - This spindle holds the turntable platter (1) and
records stable and centered.
17. Strobe Indicators - The platter has four rows of indicators. These indica-
tors are used to visually detail various stages of
pitch. The indicators are illuminated by strobe indica-
tor pilot lamp (15). Each row may appear to stand
still at different pitch levels.
Note: The use of heavy fluorescent lighting
directly above the turntable will defeat the Strobe
Lamp Pilot Lamp (15) affect indicator accuracy.
18. START/STOP Button - This over sized push button controls platter
motion. When the unit is turned on the platter will not
automatically begin to spin. Pressing the button
once will engage the high torque motor and spin the
platter, pressing this again will stop the platter.
CONTROLS AND FUNCTIONS
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 14
CONTROLS AND FUNCTIONS
19. Stylus Headshell - The included headshell is used to connect your sty-
lus with the tone arm.
20. Headshell Locking Nut - After attaching the headshell to the tonearm, this
locking nut will securely hold the headshell to the
tonearm.
21. S-Shaped Tone Arm - The tonearm is the mechanism that holds the head-
shell and stylus allowing it to glide across a record.
22. Tonearm Clamp and Rest - Use this rest to safely hold the tonearm in position
during non use and transportation.
23. Tonearm Lift Adjust Screw - This screw is used to adjust the clearance between
the stylus and a record. The stylus clearance is set
at the factory to be between 8~13mm. Adjustments
to the tonearm clearance should only be made if
necessary.
23. Tonearm Lever - This lever is used to safely elevates the tone arm
above a record surface without endangering a
records surface.
24. Tonearm Assembly Height Control - This adjustment is used to control the overall height
of the tonearm assembly. The tonearm should always
be perfectly parallel to the platter.
25. Anti-Skate Control - The anti-skate applies inward force to the tonearm to
prevent outward skipping across the record due to
the centrifugal force cause by platter rotation. The
anti-skate value should be equally to that of the sty-
lus counterweight pressure (see counterweight 27).
26. Counterweight - The counterweight adjustment applies the proper
downward pressure on the stylus.
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 15
1926232221202524
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 16
TROUBLE SHOOTING
Trouble Shooting: Listed below are common problems you may encounter, and solutions.
The turntable has no power:
1. Check the power cord, is it connected?
The sound is distorted or on one side only:
1. Make sure that the cartridge is properly wired. Refer to the Cartridge Assembly section on page 9.
2. Check if the stylus is worn out.
3. Make sure that the cartridge is making a proper connection. If need be, remove the cartridge and
clean the contacts on the back with Isopropyl alcohol, and reinsert it.
4. Check if the selector switch on the mixer is set to "Line" instead of "Phono." If so, switch
the selector switch to "Phono." Always connect the turntable RCA cord to the Phone input on a
mixer.
5. Check the RCA cables, are they connected properly? When the RCA cables are frequently
connected and disconnected, they may become damaged and need to be r eplaced.
6. Check the ground connection. Make sure it is not loose.
The sound level is very low:
1. Is the turntable connected to a device with a PHONO preamp. Connect the turntable to a preamp
mixer that has a PHONO input. Make sure the turntable is connected to the PHONO input,
NOT
AUX or LINE.
The turntable skips consistantly:
1. Is the turntable on a unstable surface. Refer to Turntable Installation on page 11.
2. Check if the tonearm is balanced properly. Refer to Tonearm Balance and Stylus Pressure on page
11.
3. Check if the stylus is worn out.
4. Check your records, are they warped?
1-YEAR LIMITED WARRANTY
A. American Audio
® hereby warrants, to the original purchaser, American Audio® products to be
free of manufacturing defects in material and workmanship for a period of 1 Year (365 days)
from the date of purchase. This warranty shall be valid only if the product is purchased within
the United States of America, including possessions and territories. It is the owner’s responsibility
to establish the date and place of purchase by acceptable evidence, at the time service is sought.
B. For warranty service, send the product only to the American Audio
® factory. All shipping charges
must be pre-paid. If the requested repairs or service (including parts replacement) are within the
terms of this warranty, American Audio
® will pay return shipping charges only to a designated
point within the United States. If the entire instrument is sent, it must be shipped in its original
package. No accessories should be shipped with the product. If any accessories are shipped
with the product, American Audio
® shall have no liability whatsoever for loss of or damage to
any such accessories, nor for the safe return thereof.
C. This warranty is void if the serial number has been altered or removed; if the product is modified
in any manner which American Audio
® concludes, after inspection, affects the reliability of the
product; if the product has been repaired or serviced by anyone other than the American Audio
®
factory unless prior written authorization was issued to purchaser by American Audio
®; if the product is
damaged because not properly maintained as set forth in the instruction manual.
D. This is not a service contract, and this warranty does not include maintenance, cleaning or peri-
odic check-up. During the period specified above, American Audio
® will replace defective parts
at its expense, and will absorb all expenses for warranty service and repair labor by reason of
defects in material or workmanship. The sole responsibility of American Audio
® under this war-
ranty shall be limited to the repair of the product, or replacement thereof, including parts, at the
sole discretion of American Audio
®. All products covered by this warranty were manufactured
after January 1, 1990, and bear identifying marks to that effect.
E. American Audio
® reserves the right to make changes in design and/or improvements upon its
products without any obligation to include these changes in any products theretofore manufac-
tured.
F. No warranty, whether expressed or implied, is given or made with respect to any accessory sup-
plied with products described above. Except to the extent prohibited by applicable law, all imp-
lied warranties made by American Audio
® in connection with this product, including warranties of
merchantability or fitness, are limited in duration to the warranty period set forth above. And no
warranties, whether expressed or implied, including warranties of merchantability or fitness, shall
apply to this product after said period has expired. The consumer’s and or Dealer’s sole remedy shall
be such repair or replacement as is expressly provided above; and under no circumstances shall
American Audio
® be liable for any loss or damage, direct or consequential, arising out of the use
of, or inability to use, this product.
G. This warranty is the only written warranty applicable to American Audio® Products and super-
sedes all prior warranties and written descriptions of warranty terms and conditions heretofore
published.
WARRANTY
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 17
SPECIFICATIONS
GENERAL
Model: American Audio
® HTD 4.5 - Super High Torque Direct Drive Turntable
System: 3-Speed Direct Drive Phono Turntable Table
Dimensions: 450 (W) x 353 (D) x 86 (H) mm
Installation: Place on flat surface or mount in flat case
Weight: 25Lbs. / 11 Kgs
Power supply: AC 115v~60Hz/230v~50/60Hz
Power consumption: 13W
Environmental conditions: Operational Temperature: 5 to 35˚C (41 to 95˚F)
Operational Humidity: 45 to 85% RH (non-condensation)
Storage Temperature: -10 to 60˚C (4 to 140˚F)
Accessories: Instruction Manual, Connecting Cord
Headshell, AC Cord, Slipmat,
Target Light, 45 Adapter
TURNTABLE SECTION
Type: 3-Speed Fully Manual
Motor: 16 Pole, 3 Phase, Brushless DC Motor
Driving Method: Direct Drive
Turntable Platter: 332mm dia. Aluminum Diecast
Speeds: 331/3 and 45-rpm and 78rpm
Wow and Flutter: Less than 0.1% WRMS (JIS WTD) with 331/3rpm
S/N Ratio: More than 60dB (DIN-B)
Pitch Controls: +/- 10%•+/- 20%,+/-50%
Starting Torque: More than 4.5kgf.cm
Braking System: Electronic brake
Starting Time: 0.2~6 sec.(Adjustable)
Braking Time: 0.2~6 sec.(Adjustable)
Time for Speed Change: Less than 0.2 sec. from 331/3 to 45 rpm.
Less than 0.2 sec. from 45 to 331/3 rpm.
Less than 0.5 sec. from 331/3 to 78 rpm
High of Cue (first track): 7.5~10mm
Descend of Cue: 1~3 sec.
TONEARM SECTION
Type: Static balanced S-shaped tonearm with detachable headshell
Effective Arm Length: 230mm
Overhang: 15mm
Tracking Error Angle: Less than 3 degree
Tracking Force Adjustment Range: 0-4g
Applicable Cartridge Weight: 13~18g
Anti-skating Range: 0~3g
Output: 2.2~5.8mV at 1KHz 5cm/sec (HP-4005)
Frequency Response: 20Hz - 20KHz
Channel Separation: More than 15 dB
Channel Balance: Within 2.5dB at 1KHz
Needle Pressure range: 2.5g (Cartridge 520SK)
SPECIFICATION
DESCRIPTIONS UNIT NORMAL
Output Difference:: dB 2.3
Output Level: mv 2.5~5.5
Speed (Speed Range) +/- 10% Hz 2.7K ,3.3K
Speed (Speed Range) +/- 20% Hz 2.4K ,3.6K
Speed (Speed Range) +/- 50% Hz 1.5K ,4.5K
Speed (Center Range) Hz 2995~3005
Wow and Flutter % 0.08
Channel separation dB 20
©American Audio® - www.americanaudio.us - HTD 4.5™ Instruction Manual Page 18
©American Audio® American DJ® Group of Companies World Headquarters: 4295 Charter Street Los Angeles, CA 90058 USA Tel: 323-582-2650 Fax: 323-582-2610