Ovation Engineered for Art 1707 User manual

Engineered for Art™

Model 1707 Integrated Amplifier User Manual
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Model 1707 Integrated Amplifier User Manual
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O V A T I O N
H I G H F I D E L I T Y
Engineered for Art™
Model 1707 Integrated Amplifier User Manual
February 2019 rev 1.0
©

Model 1707 Integrated Amplifier User Manual
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Welcome to Ovation High Fidelity.
Thank you for purchasing this Ovation High Fidelity product. Every effort has
been taken during the design, engineering and manufacture to ensure the
highest levels of craftsmanship and quality so that you will have many years of
trouble-free operation and musical enjoyment.
Proof of Purchase
Should the item be returned under warranty, proof of purchase will be required.
Therefore, you must retain the original purchase invoice and receipt. We suggest
you staple this into the rear inside cover of this user manual and retain it in a safe
place after reading it
Product Usage Declaration
This product is designed for use in a domestic hi-fi system with 8 Ω(‘Ohm’) rated
loudspeakers.
Warranty: -
•This product is warranted free of manufacturing defects for a period of five
years from date of purchase.
•This warranty excludes cases where the product is abused, or used for
purposes other than which it was intended, or modified in anyway whatsoever
•The warranty is not transferable
•Remote controls are warranted for a period of one year from date of purchase.
The warranty does not cover damage due to battery leakage
•The costs of sending the product back to the company under warranty, and its
subsequent return, are for the account of the purchaser

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Returns Policy/30 Day Money Back Guarantee
Should you not be 100% satisfied with your product for any reason, you may
return it within 30 days from date of delivery for a full refund provided
•The product is returned packed in the original packaging
•The product is not damaged in anyway whatsoever either electrically or
cosmetically
•The company reserves the right to deduct from the refund any costs required
to make good any damage to products returned by customers.
•The costs of returning the product back to the company under the 30 day
money back guarantee are for the account of the purchaser.
The Ovation High Fidelity Company reserves the right to modify and/or make
technical and/or design changes to the design of its products without obligation to
prior purchasers

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Unpacking Your New Product
Do not damage the carton or the packaging.
Retain all packaging (outer box, internal polystyrene buffers,
polythene anti-scratch bags, documentation) in a safe, dry place
until after your 30 day Money Back Guarantee has expired.
Check that you have the following items in the shipping carton:-
•Model 1707 Integrated Amplifier Unit
•Model 100 Remote control
•IEC mains lead with appropriate mains plug for your region
•User manual (this document)
Where to Locate Your New Model 1707 Integrated Amplifier
Your Model 1707 must be located in a well-ventilated area away
from sources of heat, dust and humidity and direct sunlight. You
should position the product alongside your other equipment. We do
not recommend that you stack high fidelity components directly on
top of one another as this could interfere with ventilation.
You may not place any Ovation High Fidelity product on a carpet as
this will obstruct airflow and can lead to overheating.
Make sure that where the product is located, no liquids or any other
foreign objects can enter the unit through the ventilation holes.
Keep this equipment out of the reach of children.

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Warning!
Ovation High Fidelity products contain no user serviceable parts.
There are lethal mains voltages inside the unit.
DO NOT open the product under any circumstances - If faulty,
refer it back to Ovation High Fidelity if still within the warranty
period or to a qualified, authorized service engineer if not.
This product must be Earthed when in use. Use the supplied
mains cable to ensure this.
If you are not going to be using your equipment for any length of
time –e.g. going away on vacation - it is advisable to unplug it from
the mains.
Cleaning your Ovation High Fidelity Product
1. Unplug the unit from the mains supply
2. Use a soft, slightly damp cloth or chamois leather wipe to clean the
unit.
3. Use a soft, dry, lint free cloth to wipe the unit down after step 2 is
completed
4. Never use any abrasive agent to clean the unit –e.g. Cif, Vim, CLR
or Softscrub
5. Never use furniture polish or similar oil based agents to clean your
unit
6. Never use any solvent based cleaner like petroleum (i.e. gasoline),
turpentine, benzene, paraffin, methylated spirits or similar

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Model 1707 Front Panel Controls
Figure 1 - Model 1707 Front Panel Layout
Model 1707 Rear Panel Connections
Figure 2 - Model 1707 Rear Panel layout

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Connecting Signal Sources to your Model 1707 Integrated Amplifier
Figure 3 - Model 1707 Connection Diagram
The figure above shows how to connect the Model 1707 to source equipment
and your loudspeakers. Note carefully the polarity of the loudspeaker
connections.
Switching ON and OFF
(See ‘Using the Model 100 Remote Control’ later in this Document for the
functions supported by remote control operation)
Firstly, ensure the MAINS POWER SWITCH on the wall socket is ON. When
first plugging the unit into the mains power, the unit will enter standby mode
where the power consumption will be <0.5W.
To bring the unit out of standby, depress and then release the select dial on
the left-and side of the front panel. Note if you do this too quickly, the unit will
intentionally not respond –you must keep the button depressed for at least 1
second. The red MUTE LED will illuminate along with the green input selection
LED made during the last power-up cycle. Note, the default input is CD which
is selected when the unit is powered up after the mains is first been applied.

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The MUTE LED will extinguish a few seconds later, indicating that the output
is active and the loudspeakers are engaged.
To turn your Model 1707 OFF, depress the select dial for at least 1 second
and then release. The red MUTE LED will illuminate for a few seconds
indicating that the loudspeakers have been muted as the unit powers down.
About 3 seconds later the red LED will extinguish, indicating the unit has
entered standby. Note that an internal LED, visible through the top plate
ventilation grill remains ON whilst the unit is connected to the mains whether
it is in standby or active.
Selecting a Source
To select a source, simply rotate the SELECT dial either clockwise or anti-
clockwise. The green LED associated with the selected source will
illuminate.
Adjusting the Volume
The VOLUME control is located on the right-hand side of the front panel.
Rotate it clockwise to increase the volume and anti-clockwise to decrease
the volume. When coming out of standby, or powering up for the first time,
the volume is automatically set to the 8 o’clock position.
Note that the volume control is velocity sensitive. If you rotate it fast, the
volume will increase/decrease quickly in 4 dB steps. If you rotate is slowly
the volume will change in 2 dB steps, and if you rotate it one notch at a time
the volume increase will be gradual in 0.5 dB steps, allowing you to adjust
the volume precisely.
Attention: playing music at high levels for sustained periods can
damage your hearing.
Muting the output
To mute the output from the loudspeakers, depress then release the volume
pushbutton. Depress and release the button again to restore signal to the
outputs. When the Model 1707 is muted, the RED MUTE LED on the left-
hand side of the front panel will illuminate.
Note, muting the loudspeaker outputs does not mute the headphone
socket on the front panel.
The headphone sockets however will be muted for a short period
during the power up and power down cycles.

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Using Headphones with Model 1707
When active (i.e. not in standby mode), depress the volume control dial. This
will mute the loudspeakers, but sound will continue to available via the
headphone socket. The headphone output of the Model 1707 is suited to
headphones with an impedance of between 20 and 100 Ωs.
To re-engage the loudspeakers, depress the volume dial and then release it.
About the Advanced Protection Features on the Model 1707
A sophisticated 32-bit microprocessor-based system continuously monitors the model
1707 for DC offset errors and/or loudspeaker short circuits. If an error is detected, the
loudspeakers are instantly disconnected from the amplifier.
During power up an power down cycles, to ensure there are no extraneous sounds, the
system mutes the loudspeakers and the headphone output.
In the event of a fault condition arising and the speakers being disconnected, the
GREEN LED’s that surround the volume level control will flash once per second, and the
RED MUTE LED will illuminate.
If this happens, check that you do not have a wiring short between the Model 1707 and
your loudspeakers. You could check this for example by powering down and then
disconnecting your speakers and powering the unit up again. If the unit behaves
normally, you have a speaker or speaker cable fault. Clear the fault, reconnect the
speakers and then power up the unit again.
In the unlikely event after disconnecting the loudspeakers the MUTE LED remains
illuminated and/or the GREEN LED’s around the volume control continue to flash, you
have an internal fault. Kindly contact Ovation High Fidelity via the Contact page on our
website for service.

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Using the Model 100 Remote Control
Follow the instructions on the graphic below
Depress and then
release this button to
alternately power-up the
Model 1707 or place it
into standby mode
standby mode
The LED will illuminate
when transmitting a
command
Increase the volume
Decrease the volume
Depress and release this
button to cycle clockwise
through the input
sources. The
corresponding input
source indicator LED on
the front panel will
illuminate
Switch the tone control
in and out with this
button. Applies only to
those products that have
this facility.
Depressing this button
will mute the
loudspeakers but NOT
the headphone output
socket on the front panel
Select soft roll-off filter
for 96kHz and higher
sampling rates or
standard sharp filter. For
44.1 and 48 kHz sample
rate recorded material,
this function is disabled.
This function is only
active on products fitted
with the digital input
facility. See the
respective product user
manual for further details
Select Bluetooth radio
reception. Only active
on Bluetooth equipped
products.
This button is reserved
for future use

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Changing the batteries on the Model 100 Remote Control
The batteries in the Model 100 Remote control will typically last
from between 6 and 12 months, depending upon usage. When your
preamplifier or amplifier no longer responds to the remote control,
or the functions operate erratically, the batteries must be replaced.
1. Slide the battery compartment cover off on the underside of the
remote control
2. Remove the old batteries
3. Insert 2 off new AAA batteries, carefully noting the polarity
orientation
4. Replace the battery compartment cover after which the remote
should function correctly again.
Important Note:
If you are not going to be using your system for some weeks or
months, we recommend you remove the batteries from your remote
to avoid battery leakage, which will damage the internal
connections and is not covered by the warranty. Store the batteries
in a dry, cool location. Further, we recommend that you use good
quality non-leak batteries like Duracell, Energizer or Rayovac.
Important Notice:
Batteries contain harmful chemicals and can
damage the environment. Always dispose of
batteries safely and in compliance with your
local environmental regulations.

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Replacing the Fuses on your Model 1707 Integrated Amplifier
In the unlikely event that the mains fuse on your unit should blow,
you should check the following carefully before replacing it:-
1. You are using the correct mains voltage. The mains voltage for
your product is set at the factory at the time of shipping and shown
on the rear panel bottom left hand side of the unit.
2. The power switch on the wall socket is turned ON and the IEC
mains plug is securely seated in the power receptacle on the rear of
the Model 1707.
3. If your unit does still does not operate, you need to replace the fuse
as detailed below
Important! Always unplug the unit from the
mains before attempting to replace the fuse!
Use a flat bladed screw driver to lever open the fuse drawer
Replace the Model 1707 fuse with the ratings as indicated below
Mains Voltage
Fuse Rating
Fuse Type
110-130 VAC
6.3 A T
‘T’
220 –250 VAC
3.15 A T
‘T’
Firmly push the drawer closed, after which you can reconnect the
unit to the mains and then apply power.
Do not use fuses marked FF, F or M as these are fast/medium
acting and will likely blow when you power the amplifier up. Only
use ‘T’ fuses.
If the fuse immediately blows again, refer your unit to a qualified
repair technician, or if still under warranty, contact the factory via
the ‘Contact’ page at www.ovationhifidelity.com
Never use fuses rated higher than shown in the table above on
your Model 1707. Equipment fuses are designed and rated to
prevent fire hazard and are a legal requirement in all countries.

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Trouble Shooting –Model 1707 Integrated Amplifier
Problem
Likely Cause
Action
Unit will not power up when depressing and
releasing the SELECT dial
Power switch on the wall plug is
not on, or the unit is not plugged
in
Turn the mains power wall socket switch
on and ensure the unit is plugged in and
the power cable is securely seated in the
power receptacle on the rear of the unit.
Power Switch is on, but unit still
does not power up
If the wall socket is ON and the unit
plugged in correctly, check the Model 1707
mains fuse –see Page 13
There is no sound coming from the system
The mute function has been
selected and or the volume is set
too low
If the RED MUTE LED is illuminated,
depress the VOLUME dial on the front
panel and then release it. The MUTE LED
will extinguish. If no sound is coming from
the speakers, try adjusting the volume
control in the clockwise direction. The level
will be indicated by the green light within
the volume dial recess
Incorrect source is selected
Make sure the input SELECT dial is turned
to select the source you have plugged into
the rear panel of the unit and/or that you
have plugged your source into the correct
RCA receptacle on the rear of the unit.
Hum and a ‘shhhh’ sound comes out of the
speakers when Phono is selected
No source is connected to the
Phono input
Without a turntable connected to the
Phono input on the rear panel, you will get
hum and hiss from the loudspeakers when
you turn the volume up. Once you connect
a turntable, this noise will disappear
A turntable is connected, but there
is still hum coming from the
speakers
Make sure that the turntable earth bond
wire is firmly attached to the Phono Ground
Thumbscrew located in the top left-hand
corner on the rear panel. See Figre 2 and
Figure 3 (green wire) for details
The sound coming from the loudspeakers
unit and through the headphones has no
bass and is not a proper stereo sound
The input and/or output
interconnects on the unit’s rear
panel are not pushed completely
into their associated receptacles
Make sure all interconnect plugs are fully
seated into their respective sockets. Make
sure the speaker wiring polarity is correct :
+ on the Model 1707 to + on the
loudspeaker and - to - on the speaker
The remote control is not working
The remote control batteries are
flat
Replace the remote control batteries –See
Page 12
The remote-control range is low and/or
control of the Model 1707 using the Remote
is erratic
The remote control batteries are
flat
Replace the remote control batteries –See
Page 12
The remote control is not working despite
replacing the batteries
Hang-up of the microprocessor
controller within the Model 1707 -
highly unlikely but possible
Turn the power switch on the wall OFF.
Wait 20 seconds. Turn the switch ON and
then retry the remote control
If your unit is still not working correctly, kindly contact Ovation High Fidelity
via the ‘Contact’ page at www.ovationhifidelity.com

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Glossary –Some General Terms
AC
Alternating Current –the type of supply used in normal house wiring and to power consumer appliances like
TV’s, washing machines and high fidelity systems
A-D or A/D
Analog to Digital –an electronic technique whereby an analog signal is sampled at short, regular intervals
and the sampled value converted into a representative numeric value that is stored in computer memory, CD
or some other mass storage media
Analog Signal
A voltage or current signal that varies continuously with time. Examples are the pickup signal from a
turntable, or the output signal from a microphone. All natural world signals are analog.
Balanced Audio Signals
A method whereby audio is transferred between equipment using two connections without reference to
ground, making it highly immune to ground loop induced hum and extraneous noise pickup. Uses XLR
connectors. See Unbalanced or single-ended audio signals
Bipolar Transistor
A three-terminal semiconductor amplifying device
CMT
Current Mode Topology –a type of audio amplifier wherein the peak current into the main amplifier stage is
determined directly by the output voltage and the gain setting resistor. Also known as CFA (Current
Feedback Amplifier)
D-A or D/A
Digital to Analog –the technique of converting digitally stored samples into a continuous analog signal
Damping factor
A measure of an amplifiers load impedance divided by its output impedance. The higher the figure the better.
In a modern amplifier, any figure above 50 should be considered adequate and above 100 excellent
DC
Direct Current. Examples would be the type of current supplied by a battery
Decibel or dB
A logarithmic measure of an analog signal with respect to a reference, or expressed as the difference
between two signals. 20 dB = 10x and 40 dB = 100x while 100 dB = 100 000x. By way of an example, if the
S/N of a preamplifier is -100 dBV, it means that the noise is 100 000 times lower than 1V –i.e. 10 millionths
of a Volt. The ‘V’ in dBV refers to the reference which is 1V and is an industry standard of measure
Digital Audio Signal
An audio analog signal is sampled at discrete time intervals and the resultant samples converted to a
numerically representative value. An example is a CD, where the original analog signal (e.g. the voice of a
singer) is sampled 41000 times a second and each sample converted to a 16 bit digital representation using
an A-D which is then written to the CD
Digital signal
A binary coded numerical value represented by 0’s and 1’s where the ‘0’ value corresponds to 0V and the ‘1’
corresponds to 3.3V, 5V or some other non-zero voltage. Digital signals are either parallel or serial format.
Examples of digital signals would be the co-ax output from a CD drive (serial digital signal), or the data on an
Ethernet cable used in communications (also a serial digital signal)
Distortion and Noise
The presence in any electrical signal of unintended harmonics and/or noise. Reducing distortion and noise
are key goals in any equipment that reproduces audio signals
EMI or Electro-Magnetic
Interference
Noise and/or extraneous signal introduced into a systemthrough magnetic or capacitive coupling
mechanisms. Filtering, bandwidth limiting and careful design and equipment layout can reduce the effects
orders of magnitude below human hearing threshold
EQ
Equalization
Frequency Response or
Bandwidth
The extent of frequencies an amplifier can reproduce to within a specified range. Human hearing covers
20Hz to 20 kHz. Audio amplifiers should cover at least 2 Hz to 100 kHz (-3 dB) to ensure a flat response
within the human hearing range of 20 Hz to 20 kHz
Input Sensitivity
The level of input signal required to produce a given output from a preamplifier or a power amplifier.
IR Remote
Infra-red Remote control
JFET
Junction Field Effect Transistor –a three terminal semiconductor amplifying device that somewhat emulates
vacuum tube triodes in its performance characteristics.
Ω
Unit of electrical resistance. Most loudspeakers are rated at 8 Ωs
Output Power
Measured in Watts, the amount of electrical power that can be delivered into a loudspeaker load by an
amplifier. Always quoted into a known resistive load –usually 4 or 8 Ωs
Phono socket
The small round sockets –usually grouped in Left (WHITE) and Right (RED) pairs on the rear side of audio
equipment. Also referred to as ‘RCA Phono’ sockets
RC5 IR
The protocol by which commands from the remote are encoded and transmitted via infra-red to the receiving
equipment which then executes them. Invented by Philips in the 1970’s and now one amongst 4 or 5
industry standards
RIAA
Recording Industry Association of America –The association that standardized the LP/vinyl playback
equalization curve in the early 1960’s that is still the standard for LP/vinyl today
Signal to noise ratio (SNR)
A measure of the amount of noise in a system against the nominal output signal of that system. In modern
equipment, any figure lower than -90 dBV should be considered very good, and lower than -100 dBV
excellent
Slew Rate or S/R
The fastest rate of output voltage change that an amplifier can sustain. For consumer audio amplifiers, any
figure above 100 Volts per microsecond (100 V/us) should be considered excellent
Small signal rise time
A measure of the speed (i.e. rate of change) of an amplifier or preamplifier when dealing with low level
signals in the 1-2 Volt range. Small signal rise time and slew rate (S/R) are not equivalent
Unbalanced or single-ended
audio signals
With this type of interconnection, the audio signal is transferred between equipment using a ground
connection and a signal connection. It is more common than balanced audio signals due to its lower
implementation cost, but much more susceptible to noise pick-up
VMT
Voltage Mode Topology –a type of amplifier wherein the peak current into the main gain stage is limited to
that of the input stage ‘Long Tail Pair’ (LTP) current source. Also known as VFA (Voltage Feedback
Amplifier)
XLR
The standard interconnect format for balanced audio signals

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Specifications
Model 1707 Integrated Amplifier
General Description
A 110 Watt per channel stereo integrated amplifier featuring 4 line and a MM RIAA phono stage. Comprehensive microprocessor
protection covers output shorts, DC offsets and switch ON/OFF muting along with remote control. A set of preamplifier output sockets
allow a second amplifier or sub-bass to easily be attached to the Model 1707.
Inputs 5 off for CD, Tuner, Music Server, Aux, Phono; Phono equipped with a rumble filter
Input sensitivity Phono: 3mV at 1kHz; Aux and Tuner –350 mV; M/Serv and CD 2V; Phono overload capability ref 5mV
input: > 32 dB 20 Hz to 20 kHz
Output Power 110 Watts RMS into 8 Ohms, both channels driven; 190 watts into 4 Ohms both channels driven; 330
Watts into 2 Ohms, single channel driven. All power levels quoted for 0.1% distortion
Distortion Typically 0.001% at 1 Watt into 8 Ωs; Better than 0.007% at 100 Watts into 8 Ωs; Better than 0.01% at
160 Watts into 4 Ωs; 0.1% at rated output power
Peak Output Current > 20 A for 50 ms both channels driven
Slew rate > 140 V/us in both +ve and -ve directions
Frequency Response 1Watt into 8 Ohms: Line Level inputs: 20Hz to 20 kHz +0dB -0.1dB; 2Hz to 200 kHz +0dB -3dB
Phono: RIAA conformance 20 Hz to 20 kHz +-0.15dB typical
Built-in Phono Rumble Filter: -0.2dB at 20 Hz, -24 dB at 2 Hz ref output at 1kHz
Signal to Noise Ratio Line: -100 dB ref 1 Watt Output into 8 Ωs; -110 dB ref 100 Watts into 8 Ωs
Phono: ~79 dB ref 5 mV input at 1 kHz as measured at pre-out sockets
Pre-out Drive 10k Ωor higher ; Pre-out output impedance: 220 Ohms
Headphone Output 3 VRMS into 32 Ω; distortion < 0.02% 20Hz to 20kHz
Operating voltages 100-130 VAC or 200 to 260 VAC factory set at time of order
Power consumption 500 VA Max; < 1W in standby mode
Weight 15 Kgs unit only; 20 kgs when packed for shipment
Operating Temperature -10 deg C to +45 deg C non-condensing
Warranty 5 years on parts and labour. Terms and conditions apply - See website for details.
The Ovation High Fidelity Company Limited
Norfolk, England
www.ovationhifidelity.com
™

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Owners Information
Date Purchased: ____________________________________
Dealer (if Applicable): ________________________________
Warranty Registration Date: ___________________________
Serial Number: _____________________________________

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Model 1707 Integrated Amplifier User Manual
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The Ovation High Fidelity Company
Norfolk, England
www.ovationhifidelity.com