XTZ CLASS-A100D3 User manual

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XTZ CLASS-A100D3
CLASS A INTEGRATED HIGH-END AMPLIFIER
User manual
© 2008 XTZ AB , www.xtz.se

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Table of contents
Page:
Contents
3
About XTZ
4
Technical presentation
5
Preparations
6
Practice of sound / Installation and placement tips
7
Mounting
9
Functional reference
10
Technical specifications
13
Ser ice & Support
14

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Contents
Contents
C ngratulati ns f y ur purchase f the
CLASS
A100 D3.
CLASS A100D3
pr vides many p ssibilities, in
rder t utilize thi
s pr duct in the best way, please
read the manual carefully bef re using R m
Analyzer. It takes patience t ptimize a hifi
system. If y u lack experience fr m this kind f
measurements r have any questi ns, please
c ntact ur “free f charge” supp rt.
(Support inf n the last page f the user manual)
Read the manual bef re using the pr duct and use
all p ssibilities carefully.

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About XTZ
Philosophy
Our reference and starting p int is t recreate a
natural s und, taking int acc unt th
at ac ustics
always is a matter f taste.
XTZ Goal
Our main goal is to pro ide the best alue
for money.
Our c ncept:
- Cut d wn the numbers f middlemen
- Put m re m ney int pr duct quality
and less n advertising.
- Manufacture c st-effective in large v lume
- Pr vide perfect technical s luti ns
Contakt
Website: www.xtz.se
E-mail: [email protected]

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Technical presentation
Amplifier
CLASS A100D3 is the third
generati n f this
amplifier.
The amplifier is designed t pr vide maximum
s und quality. All inputs and speaker c nnecti ns
are g ld plated and f the highest quality.
A p werful ring-c il transf rmer c ntributes t an
effective p wer supply. F ur p wer utput
transist rs per channel makes it p ssible t handle
high currents. The switching between
inputs/s urces is d ne by g ld plated relays, which
gives a l w dist rti n and a sh rt signal way
thr ugh the amplifier.
The third generati n is n w built by m dules (f r
future devel pment) and has g t a l t f new
c mp nents with impr ved quality.
Class A/Class AB
The amplifier can be switched between class A and
AB. This means y u d n t always have t use class
A m de if n t feasible. There is als an
aut m de
available; if the heat sink temperature exceed
s 55 C
the amplifier selects class AB aut matically. Class A
r AB m de can als be selected with the rem te
c ntr l.
CLASS A MODE
Class A m de increases the
bias current thr ugh
the utput transist rs t achieve the best p ssible
perf rmance. The amplifi
er draws a l t f p wer
even when idling, creating l ts f heat dissipati n
making it very h t.
CLASS AB MODE
Class AB is the standard perating m de am ng
c nventi nal amplifiers. The maximum utput
p wer is radically higher than in Class A m de.
This m
de is suitable when y u want t play l ud
f r l ng peri ds. The risk f verheating is
c nsiderably l wer than with class A perati n.
Class A m de uses a higher n minal
quiescent current thr ugh the utput
stage, which in turn pr duces m re heat
dissipati n. The utput transist rs heat
the c ling sink, and the temperature is
measured by a sens r, feeding the
inf rmati n back t the utput stage, thus
regulating the bias.
Cabinet
The new cabinet, with s fter c rners, is alm st
c mpletely made fr
m s lid aluminium, enhancing
the quality impressi n as well as the mechanical
stiffness.
Outer interference is effectively shielded, and the
alumini
um c ntributes t spreading the heat
generated inside. This impr ves the
heat
dissipati n, c ling f r the amplifier better.
I high precisi n v lume c ntr l maintains a perfect
balance between the channels, regardless f what
level is selected.
The
v lume kn b, input select r and rem te
c ntr l unit are all made fr m aluminium.
Remote control
Class A100 D3 has a newly
devel ped rem te
c ntr l, t adapt it t newer functi ns and make
then handling easier and better.
RIAA
Preamplifier f r MM/MC pick-
up. There is a switch
t change between MM and MC.
MM = m ving magnet ~2-5mV
MC = M ving c il ~0.5mV

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Preparations
Unpacking
Carefully unpack the pr duct, and pay attenti n s
y u d n't break anything. If p ssible, save the
packing b x f r future transp rtati ns.
Sh uld
there be any
damage n the pr duct, please c ntact
y ur retailer.
Check that
the mains v ltage marking n the back
panel matches y ur l cal mains v ltage.
If the pr duct is c ld,
wait t c nnect the p wer
c rd until it reaches r m temperatu
re. If y u d n’t
d this y u may cause damage f the pr duct.
Accessories
Main p wer c rd
Rem te c ntr l
User manual

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Practice of sound / Installation and placement tips
This chapter c ntains c mm n inf rmati n n
l udspeaker placement and installati n.
These are general rules, s there are excepti ns.
In which room do
you achie e the best
sound?
N matter h w g d the equipment is, in the wr ng
listening envir nment it will inevitably s und bad.
There are s me basic rules c ncerning a pr per
l udspeaker installati n:
Reflections
Carpets, curtains and s
ft furniture abs rb mid
range and high frequency s unds
, and this is
n rmally preferable. Big empty areas
, n the
c ntrary, reflect it and pr duce
hard reflecti ns
that may lead t a
blurry dial gue. Apart fr m
c l uring the s und, als the perspective f
the
s und will deteri rate. Reflecti ns in the r m can
r ughly be c mpar
ed t the reflecti ns that cause
gh st pictures n a TV screen.
Amplification of bass
frequencies
A l udspeaker that is placed near a wall, ceiling r
fl r will amplify l we
r frequencies in a s metimes
n t desirable way (since it may lead t
an indistinct
s und repr ducti n
). This amplificati n bec mes
even m re bvi us if the l udspeaker is placed near
a c rner. Thus, f r a s und as clear as p ssible, the
l udspeaker sh uld
be placed at least 30 cm (ab ut
12 inch) away fr m the wall.
S me c nstructi ns are designed t be placed cl se
t a wall.
Furniture
Be aware that furniture may vibrate creating
bad
s und at l ud bass levels.
Room dimension
Quadratic r
ms r r ms where the length is
exactly twice as l ng as the width sh uld be
av ided, since they may create unwanted
res nances.
Cables
Try t keep them as sh rt as p ssible. By its
electrical parameters, a l ng c nduct r will have a
bigger influ
ence n the s und than a sh rt ne. It
may als w rk as an antenna picking up
vari us
signals that may bec me a c nstant n ise in an
active subw fer.
Make sure that all c nnecti ns are clean and n t
xidized. All c nnecti ns sh uld be mechanically
stable
, b th p wer, signal and l udspeaker cables.
Signal cables sh uld be separated fr m ther
cables.

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Front speakers
T achieve the best results
the fr nt speakers
sh uld be placed symmetrically
in fr nt f the
listener. The distance between the fr nt
speakers
sh uld be ab ut
80% f the distance t the listener.
In ther w rds, the rec mmended angle between
the fr nt speakers is 45°.
Finally
Please remember that g d s und is a matter f
taste, s y u have t experiment t btain y ur
fav urite ne. We wish y u best f luck!

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Mounting
Connect with the
correct phase
Always c nnect using the c rrect phase, fr m the
+-p le n the amplifier t the +-
p le n the
l udspeaker and respectively f r the minus (-) p le
If y u by accident c
nnect the ther way,
there is n risk f damage. H wever, the
phase f the signal will be n t c rrect,
resulting in impr per s und.
O erload
With high p wer l ad under l ng time there is risk
f verl ading the driver and/ r the amplifier.
If y u play extremely l u
d f r a l ng time
there is a
risk that y u destr y the
pr duct.
The initial playing
time
Amplifiers d n t generally need any “playing in”
time. Class A amplifiers need a few minutes
in
rder t stabilize the perating temperature.
Class A m de uses a higher n minal
quiescent current thr ugh the utput
stage, which in turn pr duces m re heat
dissipati n. The utput transist rs heat
the c ling sink, and the temperature is
measured by a sens r, feeding the
inf rmati n back t the utput stage, thus
regulating the bias.
The regulati n takes a few minutes bef re
it bec mes c mpletely stable. During this
time high listening v lumes sh uld be
av ided.

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Functional reference
1. STANDBY
2. CD
3. DVD
4. AUX
5. PHONO
6. DIGITAL
7. VOLYM
8. IR
9. DISPLAY
10. POWER ON/OFF
11. AC INPUT
12. VOLTAGE
13. DIGITAL Inputs
14. SUB OUT
15. REC OUT
16. PRE OUT
17. AMP IN
18. PHONO MM/MC
19. PHONO IN
20. CD
21. DVD
22. AUX
23. SPEAKER TERMINALS
24. SPEAKER TERMINALS
8

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Remote control
25. STANDYBY
26. DIM
27. MUTE
28. OPERATION MODE
29. INPUTS
30. VOLUME
1 STANDBY
T set the pr duct in standby m de, with ut
turning it ff
2 CD
CD as s urce
3 DVD
DVD as s urce
4 AUX
Aux as s urce
N rmally used t c nnect a TV r dec der
5 PHONO
Ph n as s urce
F r c nnecting y ur LP player
6 DIGITAL
Ch sing the digital inputs
Push it nce t change
t next digital
input
7 VOLUME
Adjusting the v lume n the amplifier
8 IR
Infra red eye
D n t put anything in the way f the IR
-
eye
9 DISPLAY
All inf rmati n is sh wn here
10 ON/OFF
The main p wer n/ ff
Sh uld be set t OFF
when g ing away f r
a l nger time
11 AC INPUT
F r c nnecti n the p wer c rd
12 VOLTAGE
The input v ltage that is used
EU ~220-240V & USA ~110-130V
13 DIGITALINGÅNG
Digital input, change input by pushing the butt n
ne m re time.
Push it nce t change
t next digital
input

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14 SUB OUT
F r c nnecting active subw fers
15 REC OUT
N n v lume c ntr lled utput. F r TAPE
/MD
rec rding
16 PRE OUT
V lume c ntr lled utput, fr m the preamp.
N rmally c nnected t AMP IN. Can be used f r
c nnecting ther p wer amps
17 AMP IN
Input t the p wer amp. Is n rmally c nnected t
the PRE OUT
18 PHONO
Switch between MM and MC.
Remember t c nnect the gr und screw
fr m the LP player
19 PHONO IN
LP Player as s urce
Check what pick-
up type is used, and set
the amplifier acc rdingly
Remote control
20 STANDBY
T set the pr duct in standby m de, with ut
turning it ff
21 DIM
L wer the backlight in the display
22 MUTE
Sets the v lume t zer
”MUTE” in the display.
23 OPERATION
MODE
Press CLASS A, CLASS AB
r AUTO t put the
amplifier int the c rresp nding perating
m de.
The display will sh w y
ur selecti n. In AUTO
m de the built-
in micr c mputer will
aut matically set the m st suitable m de.
Class A m de uses a higher n minal
quiescent current thr ugh the utput
stage, which in turn pr duces m re heat
dissipati n. The utput transist rs heat
the c ling sink, and the temperature is
measured by a sens r, feeding the
inf rmati n back t the utput stage, thus
regulating the bias.
The regulati n takes a few minutes bef re
it bec mes c mpletely stable. During this
time high listening v lumes sh uld be
av ided.
24 INPUT
Ch se s urce
25 VOLUME
V lume c ntr l

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Technical specifications
Construction type
Integrated amplifier
Dimensions
158 x 445 x 468 mm (HxWxD)
Inc Feet & Terminals
Weight
22 g
27 g including cardboard box
Frequency response
5 Hz- 50 Hz (non-flatness < 0.5dB)
SNR Ratio
>100dB (A Weighted, 100W, 8ohm)
Impedance (input)
20 Ohms
Voltage gain
42dB
Damping factor
>100
C Power supply
~220-240V & ~110-130V
POWER
2x50W 8 Ohm (Class A)
2x110W 8 Ohm
2x180W 4 Ohm
2x300W 2 Ohm
Connections
Gold plated RCA,
Spea er output: Banana /Pole screw
Volume handling
Crystal chip CS3310 for volume control in
0,5dB
steps
D C
Analog Devices AD1955

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Ser ice & support
Precautions
If the unit bec mes unusually h t, y u sh uld
immediately change the perati n m de t CLASS
AB by pushing the c rresp nding butt n n the
rem te c ntr l.
This amplifier has
a pr tecti n against verl ad
and sh rt-
circuit. When PROTECT is sh wn n the
display, y u sh uld immediately turn the unit ff
.
When the reas n f r the PROTECT warning is
f und and has been taken care f, y u may turn the
amplifier n again.
Als , when used under n rmal c
nditi n the unit
bec mes
h t, s y u sh uld n t c ver it r place it
in a l cati n with reduced ventilati n, i.e cl sed
b xes r narr w areas. D n t place any
ther
equipment n the t p f the amplifier. Neither
sh uld it be placed near ther s urces f heat.
Safety
Read the manual and these precauti ns bef re
taking the unit in perati n.
D n t exp se the unit t high temperatures.
Av id placing the unit in cl sed racks, b xes etc.
Av id m isture, liquids and dust.
D n t pen the cabinet while the AC p wer c rd is
c nnected.
D n t turn n and ff the amplifier repeatedly in a
sh rt peri d f time.
Make sure that n bjects (c ins, needles etc.) fall
int the unit.
If y u plan t leave the unit unused f r a l nger
time (when n a j urney f r instance), make sure
the AC p wer c rd is n t c nnected.
When c nnecting:
Make all the necessary c nnecti ns bef re turning
the unit n. Never c nnect l udspeaker- r signal
cables while the amplifier is turned n.
Ser ice
If y u need service c ntact y ur l cal dealer.
Y u are always welc me t c ntact us if y u have
pr blems with pr duct by e-
mail:
[email protected]
Webpage: www.xtz.se
ALWAYS pack the pr duct / part very
carefully. Unf rtunately damages during
transp rtati n ar
e very c mm n. If the
package is weak, the transp rting
c mpany d es n t c mpensate damages.
Always encl se a c py f the receipt and a
descripti n f the defect.
Support
Please c ntact ur “free- f-
charge” supp rt if y u
need installati n advice, r
if any pr blems ccur
during the installati n.
C ntact us by e-mail [e-mail]
and include
y ur ph ne number if y u require help, and we will
ring y u back.
Guarantee
This pr duct is supplied with a ONE year guarantee
against manufacturing fa
ults r defects that might
alter the perf rmance f the unit. Refer t y ur
supplier f r full sales and guarantee terms.