Ayre Acoustics Stereo Amplifier K 5XEMP User Manual

Ayre K-5xeMP  
Owner’s Manual  
Preamplifier  
 
Table of  
Contents  
Welcome to  
Ayre . . . . . . . . . . . . . . . . . . . . . . . 2  
Installation . . . . . . . . . . . . . . . . . . . . 3  
Operation. . . . . . . . . . . . . . . . . . . . . 6  
Specifications . . . . . . . . . . . . . . . . . . 11  
Warranty . . . . . . . . . . . . . . . . . . . . 12  
Notes . . . . . . . . . . . . . . . . . . . . . . 15  
Connections and  
Controls and  
Numbers and  
Statement of  
A Place for  
 
Welcome to  
Ayre  
Your Ayre K-5xeMP offers a significant advance in  
the musical performance of high-fidelity equipment.  
The warmth and immediacy of a live performance  
are apparent from the first listening. The  
combination of superb resolution and a natural,  
relaxed quality will draw you into the music, time  
and time again.  
This level of performance has been implemented  
using the highest level of workmanship and  
materials. You can be assured that the Ayre  
K-5xeMP will provide you a lifetime of musical  
enjoyment.  
To our North American customers, please be  
sure to mail your warranty registration card and  
photocopy of your original sales receipt within 30  
days in order to extend the warranty to five  
years.  
2
 
Connections and  
Installation  
The Ayre K-5xeMP preamplifier is easy to connect  
and use. The following guidelines will ensure that  
the installation goes smoothly.  
Location  
The infrared beam of the  
remote transmitter will also  
travel through glass.  
A good location for your preamplifier is in an  
open-backed cabinet or on a shelf. The receiver for  
the infrared remote control is mounted behind the  
display lens on the front panel. A direct line of sight  
from the listening position will ensure the  
maximum range.  
Inputs  
When you have a choice, a  
balanced connection will offer  
slightly higher sound quality  
than an unbalanced  
The Ayre K-5xeMP offers two pairs of balanced  
inputs and two pairs of unbalanced inputs. Balanced  
connections are made via three-pin XLR connectors,  
while unbalanced connections are made via RCA  
connectors.  
connection.  
The FET switches used in the input selector  
circuitry offer transparent, noise-free switching,  
3
 
with no moving parts. Please be aware that they can  
be overloaded if the output voltage from the source  
component is too high.  
Do not use a source component that has  
an output level greater than 4 V rms  
unbalanced, or 8 V rms balanced.  
Using a source component with too great an output  
level will cause distortion.  
The input connectors on the  
rear panel are labeled to  
match the input selector  
buttons.  
In this modern era of diverse source components, it  
has become impractical to pre-label the inputs with  
the actual name of the source. Instead, the K-5xeMP  
has simple alpha-numeric labels that allow you to  
easily remember the selector button associated with  
each source component.  
Tape Outputs  
By connecting the “Tape Out” jacks on the rear of  
the K-5xeMP to a recorder with analog inputs,  
recordings may be made directly from the other  
source components connected to your preamplifier.  
The tape outputs are switched on and off at the front  
panel or via the remote. Please refer to the section  
“Controls and Operation” for further information.  
If a recorder is not installed in  
your system, the “S2” input  
performs exactly like the other  
unbalanced inputs.  
If you are connecting a recorder to your  
system, be sure to connect its outputs to  
the “S2” input of the K-5xeMP.  
This will prevent the undesired possibility of  
creating a feedback loop when making a recording.  
4
 
A y r e  
S.N.  
K-5 Stereo Preamplifier  
Boulder, Colorado USA  
Right Channel  
S2  
B1  
B2  
Left Channel  
S2  
B2  
B1  
Outputs  
Outputs  
Volts  
50/60 Hertz  
Tape  
Out  
Tape  
Out  
S1  
S1  
10  
W
Max  
Main Outputs  
The balanced outputs use  
XLR connectors, while the  
unbalanced outputs use RCA  
connectors.  
The Ayre K-5xeMP offers one pair of balanced  
outputs and one pair of unbalanced outputs. Both  
pairs of outputs may be used simultaneously.  
However, please note that the level of the  
unbalanced outputs will be 6 dB lower than the  
balanced outputs.  
AC Power  
Connect the Ayre K-5xeMP to an unswitched power  
source. When the unit is first connected to the AC  
power, the input selector will default to “B1”, the  
volume control will default to “11”, the display will  
be set to “On”, and both the mute and record output  
will be set to “Off”. Removing the AC power from  
the unit will cause it to lose its current settings and  
revert to the default settings.  
Although proprietary RFI (radio-frequency  
interference) filtering is built into the preamplifier,  
in some situations an AC power-line filter (such as  
those offered by Ayre) may provide additional  
sonic benefits.  
5
 
Controls and  
Operation  
The Ayre K-5xeMP preamplifier may be controlled  
using either the front panel buttons or the included  
remote control handset. Basic functions are available  
at both locations, while additional functions are  
available only at the remote control handset.  
Remote Control  
The supplied remote control handset can operate  
both the K-5xeMP preamplifier as well as an Ayre  
CD player. The controls to operate the CD player  
are grouped towards the top of the handset, while  
those for the preamplifier are grouped towards the  
bottom.  
The remote control handset uses 2 x AAA batteries,  
which must be installed before use. Access to the  
battery compartment is achieved by sliding the  
cover on the rear of the unit.  
6
 
Basic Functions  
The following functions are accessible via both the  
front panel buttons and the remote control handset.  
Volume Control  
The volume control comprises 66 individual levels,  
each with a step size of 1.0 dB allowing for precise  
selection of the desired volume setting.  
When the unit is first connected to an AC power  
source, the volume level defaults to “11”, a relatively  
low setting. After that, the current volume setting is  
retained in memory, and will remain constant when  
changing inputs.  
Mute  
The mute button provides an easy way to  
temporarily turn the volume of the K-5xeMP to  
“zero”. The current volume control setting is  
retained in memory and appears on the display.  
7
 
Input Source Selection  
The input selector buttons are located below the  
display. Alpha-numeric labels that match the  
connector labels on the rear panel (B1, B2, S1, S2)  
are used to denote the inputs. When the unit is first  
connected to an AC power source, the “B1” input is  
selected by default.  
Tape Output  
The “Tape Output” function  
does not operate on the “S2”  
input. This avoids the  
When the “Tape Output” button is pressed, the  
indicator will light up and the signal from the  
currently selected source component will be routed  
to the “Tape Out” connectors. This allows a  
recording to be made.  
undesired possibility of  
creating a feedback loop.  
Turn the “Tape Output” off, unless a recording is  
being made. This will completely disconnect the  
recorder from the K-5xeMP (including the ground  
connection), avoiding the possibility of undesired  
ground loops.  
Additional Functions  
The following function is available only via the  
remote control handset.  
Display  
The display of the K-5xeMP may be turned off if  
desired. A single blue light indicates that the  
8
 
display is off. When commands are received, either  
from the front-panel buttons or the remote control,  
the display will be activated for a few seconds to  
confirm the command, and then turn off  
automatically. Pressing the “Display” button on the  
remote control again will turn the display on.  
Processor Pass-Through  
When using the Ayre K-5xeMP in a surround-sound  
system for home theater, it is desirable to use the  
“Processor Pass-Through” mode. This mode allows  
your two-channel music sources to be routed  
directly through the K-5xeMP, avoiding the sonic  
degradation of most processors, and at the same time  
allows the front two channels of the theater system  
to integrate with the K-5xeMP with the touch of a  
single button.  
If you are using a surround-sound processor, connect  
the front left and right outputs of the processor to  
one of the inputs on the K-5xeMP. Please note that  
9
 
the K-5xeMP can accept either balanced or  
unbalanced signals.  
To activate the “Processor Pass-Through” mode for  
that input, remove the AC power from the K-5xeMP  
for at least 10 seconds. Then, while pressing the  
input selector button corresponding to the chosen  
surround-sound processor input, re-connect the AC  
power.  
The chosen input is now programmed for “Processor  
Pass-Through” operation, disabling the now  
redundant volume control of the K-5xeMP. When  
that input is selected, the preamplifier section of the  
K-5xeMP is set to unity gain (0 dB), and the volume  
is controlled directly from the surround-sound  
processor. The volume indicator of the K-5xeMP will  
display “PP” to show that the “Processor  
Pass-Through” mode has been selected for that  
input.  
To clear the “Processor Pass-Through” mode from  
an input and restore normal operation, remove the  
AC power from the K-5xeMP for at least 10 seconds.  
Then, while pressing the “Mute” button, re-connect  
the AC power.  
Break-In  
100 to 500 hours of music  
played through the system will  
ensure full break-in.  
Due to the manufacturing processes used for the  
printed circuit boards, wires, and capacitors, a  
break-in period is necessary for the preamplifier to  
reach its full performance potential.  
10  
 
Numbers and  
Specifications  
Maximum Input Level  
Input Impedance  
4 V rms – unbalanced inputs  
8 V rms – balanced inputs  
20 k– unbalanced inputs  
40 k– balanced inputs (20 kper phase)  
XLR Input Polarity  
Pin 1 – Ground  
Pin 2 – Non-inverting (Positive)  
Pin 3 – Inverting (Negative)  
Maximum Gain  
4 dB – unbalanced outputs  
10 dB – balanced outputs  
Frequency Response  
Output Impedance  
DC – 200 kHz  
110 – unbalanced outputs  
220 – balanced outputs (110 per phase)  
Power Consumption  
Dimensions  
10 watts  
17-¼" W x 13-¾" D x 4-¾" H  
44 cm x 35 cm x 12 cm  
Weight  
25 pounds  
11.5 kg  
11  
 
Statement of  
Warranty  
North American Warranty  
Your Ayre K-5xeMP preamplifier is warranted  
against defects in workmanship and materials for a  
period of ninety days from the date of original  
purchase. This ninety-day coverage is automatic  
upon acceptance of delivery and no registration is  
required.  
Additionally you have the option, at no cost, to  
extend the warranty for a period of five years from  
the date of purchase (except for the disc transport  
mechanism, which will be warrantied for a period of  
two years from the date of purchase) by returning  
the completed Warranty Registration Card and a  
photocopy of your original purchase receipt in the  
enclosed postage-paid envelope to Ayre within  
thirty days of product delivery. This optional  
warranty is only available within the thirty-day  
registration period.  
12  
 
North American Warranty Statement  
1. If any defects are found in the materials or  
workmanship of this Ayre product within the  
warranty period, the unit will be repaired or  
replaced by Ayre Acoustics, Inc. (Ayre) or its  
authorized agent.  
2. Purchaser must return the product, packed in the  
original shipping carton, freight prepaid to:  
Ayre Acoustics, Inc.  
2300-B Central Avenue  
Boulder, Colorado 80301  
or to Ayre’s authorized agent. The product must be  
accompanied by a written description of the defect  
and a photocopy of your original purchase receipt.  
Ayre will not be responsible for any shipping  
damage and strongly recommends the purchase of  
shipping insurance.  
3. Ayre reserves the right to inspect any product  
that is the subject of any warranty claim prior to  
repairing or replacing it. Final determination of  
warranty coverage lies solely with Ayre.  
Out-of-warranty claims will be billed for labor,  
materials, return freight, and insurance as required.  
Any product for which a warranty claim is accepted  
will be returned to the purchaser and the cost of  
shipping and insurance will be factory prepaid  
within the boundaries of the USA. Units to be  
shipped outside of the USA will be shipped freight  
collect only.  
13  
 
4. Ayre strives to manufacture the finest possible  
equipment, and therefore reserves the right to make  
improvements on its products, without necessarily  
assuming any obligation to retrofit such changes  
upon its previously manufactured models.  
5. The above warranty is the sole warranty given by  
Ayre, and is in lieu of all other warranties. All  
implied warranties, including warranties of  
merchantability or fitness for any particular purpose  
shall be strictly limited to the duration of the above  
warranty. Ayre shall have no further obligation of  
any kind, whether express or implied. Further, Ayre  
shall in no event be obligated for any incidental or  
consequential damages as a result of any defect or  
any warranty claim, whether express or implied.  
6. Ayre does not authorize any third party,  
including any dealer or sales representative, to  
assume any liability of Ayre or make any warranty  
for Ayre. The unit must not have been altered or  
improperly serviced. The serial number on the unit  
must not have been altered or removed.  
7. The remaining period of this warranty is only  
transferable to subsequent purchasers if the product  
is resold by an authorized Ayre dealer.  
International Warranty  
Warranty terms outside of North America may vary.  
Please contact the authorized Ayre distributor in  
your country of purchase for the terms of warranty  
and also the service itself.  
14  
 
A Place for  
Notes  
Serial Number:  
________________________________________  
Purchase Date:  
Dealer:  
________________________________________  
________________________________________  
________________________________________  
Salesperson:  
15  
 
16  
Rev. 1.3a  
 
 
Ayre Acoustics, Inc.  
2300-B Central Avenue  
Boulder, Colorado 80301  
+1-303-442-7300  
 

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