XTZ SUB AMP1
Contents
1. A XTZ SUB AMP1 Subwoofer Amplifier 2009 XTZ AB www xtz se Contents About KTZ Technical presentation Preparations Practice of sound Installation and placement tips Mounting and connection tips Functional reference Technical specifications Service amp Support Page Onn C1 A Q 12 Contents XTZ SUB AMP1 offers some possibilities so in order to utilize your new loudspeaker in the best way you should carefully read through this manual before using the loudspeaker for the first time It may take some patience in order to make the loudspeaker sound optimal If you have no previous experience of these kinds of installations or if you have any questions feel free to contact our free of charge support and we will help you See further under the heading of Support on the last page of this manual Philosophy XTZ Goals Contact us Our reference and starting point is to recreate a natural sound but also in respect to the fact that acoustics always is a matter of taste Our main goal is to provide the best value for money Our concept Cut down the numbers of middlemen Put more money on product quality and less on advertising Manufacture cost effective in large volume Provide perfect technical solutions Website www xtz se E mail info xtz se Amplifier Unpacking Accessories SUB AMP 1 works just as good for those who want to power the passive subwoofers XTZ 992. AC INPUT OUT SPEAKER OUT 0 180 phase adjustment Switch ON and the high pass are available Switch OFF and the high pass are unavailable Balanced input Line level inputs to subwoofer Use these RCA jacks to connect audio signals from line level outputs on a receiver preamplifier television set or surround sound decoder If only a mono single subwoofer output is provided connect it to either of input jack Stereo high level inputs to subwoofer Use these terminals when line level connections are not available from receiver preamplifier or surround sound decoder Connect to regular 230 V 50 Hz High Level OUTPUT to speaker passive subwoofer Stereo high level inputs to subwoofer Use these terminals when line level connections are not available from receiver preamplifier or surround sound decoder _ 10 The high pass crossover removes the deepest part of the bass spectra This is helpful in many rooms since they heavily amplify the deep bass tones which may lead to uncontrolled bass Remark By connecting both lines in inputs to the same signal you increase the level by 3 dB Certain types of simpler low level audio cables may create a noise in the subwoofer We recommend double shielded low level cables to be used Construction type Dimensions Weight Freguency response Connections Power amplifier Connections and settings Amplifier Class AB 376 x 396 x 225 mm HxBxD Feet add 22m
3. exactly twice as long as the width should be avoided since they may create unwanted resonance Be aware that furniture may vibrate and thus create bad sound at loud bass To get the best result the front speakers should be placed symmetrical in front of the listener The distance between the front speakers should be around 80 of the distance to the listener In other words the recommended angle between the front speakers should be 45 Either you can have the loudspeakers angled in towards the listener or you can have them directed straight ahead Some loudspeakers sounds better when angled but this may also depend on reflections from the side walls By angling the loudspeakers inwards you decrease unwanted reflections and thus you get a better stereo perspective 0 8x Placement of the subwoofer The correct height Cables Finally The placement of the subwoofer in the room dramatically affects the overall frequency response and sound level of the system At low frequencies the effect of the room is strong Even a slight change in the subwoofer s location can make a significant difference in the frequency balance Patience and experimentation is needed to find the optimal placement The placement affects the phase difference between the main loudspeakers and the subwoofer Subwoofers often get a more linear frequency response placed in a corner If the loudspeakers are small they should be placed on stands or ti
4. W10 17P or any other subwoofers SUB AMP1 can be perfect as a amplifier for bi amping for full range speakers By using one or two subwoofers with correct placement it is often easier to get a better frequency response The XTZ Sub Amp 1 is equipped with a powerful 300 watt amplifier with a large heat sink for effective cooling For professional use studio PA etc it is equipped with a balanced input The terminal connectors are gold plated and very solid To achieve a high power and a long durability the amplifier use a large toroidal transformer large electrolytic capacitors and Toshiba bipolar transistors in the output stage The active amplifier also provides a variety of adjustment options not possible to obtain using a passive filter These include phase frequency high pass filtering volume etc By using these settings the main amplifier is relieved and only needs to drive the midrange and treble This usually results in lower distortion and the risk of damages on it is lowered Carefully unpack the speaker and pay attention so you don t break anything If possible save the packing box for future transportations If there should be damage on the loudspeaker please contact your retailer Check that the mains voltage marking on the back panel matches your local mains voltage If the product is cold wait to connect the power cable till it reaches room temperature If you don t do this you can cause damage
5. lted so that they are on the same level as the ears Try to keep them as short as possible By its electrical parameters a long conductor will have a bigger influence on the sound than a short one The subwoofer cable should be shielded to avoid noise Make sure that all connections are clean and not oxidised All connections should be mechanically stable both power signal and loudspeaker cables Signal cables should be separated from other cables Please remember that good sound is a matter of taste so you have to experiment to obtain your favourite one We wish you best of luck Mounting alternatives Connect using the correct phase Overload Load SUM AMP1 is constructed to be placed lying down or standing up Place the logotype in same direction as SUB AMP1 Always connect using the correct phase from the pole on the amplifier to the pole on the loudspeaker and corresponding for minus With high power load under long time there is risk of overloading the driver and or the amplifier We recommend that no more than 2pcs of 8 Ohms subwoofer should be connected to SUB AMP1 This is because the impedance should be extremely low Mount the feet on the side you want to be down If you by accident connect the other way there is no risk of damage However the sound will not be correct especially in the lower frequencies If you play extremely loud for a long time there is a big risk that you destro
6. m 16 kg pes 10 250 Hz Gold plated RCA XLR Balanced input Speaker input Banana plug Pole screw Speaker output Banana plug Pole screw 300 W RMS in 4 ohm 400 W RMS in 2 ohm e Stereo low level input balanced input and high level speaker input Auto on Phase selector 0 to 180 degrees Boundary frequency control 40 250Hz Volume control High pass switch Heavy duty screw terminal connectors _ 11 Service Support If you need service contact your local dealer You are always welcome to contact us if you have problems with product by e mail support xtz se Webpage www xtz se Please contact our free of charge support if you need installation advice or if any problems occur during the installation Contact us by e mail support xtz se and include your phone number if you require help and we will ring you back _ 12 ALWAYS pack the product part very carefully Unfortunately damages during transportation are very common If the package is weak the transporting company does not compensate damages Always enclose a copy of the receipt and a description of the defect
7. of the product Main power cable User manual Logotype Robber feet In which room do you achieve the best sound Reflections Amplification of bass frequencies Room dimensions Furniture Front speakers Angling This chapter contains common information on loudspeaker placement and installation This is general rules so there are exceptions of some rules No matter how good the equipment is in the wrong listening environment it will inevitably sound bad There are some basic rules concerning a proper loudspeaker installation Carpets curtains and soft furniture absorb mid range and high frequency sound and this is preferable Big empty area on the contrary reflects it and produces hard reflections that may lead to blurry dialogue Apart from colouring the sound also the perspective of the sound will deteriorate Reflections in the room can roughly be compared to the reflections that yield ghost pictures on a TV screen A loudspeaker that is placed near a wall ceiling or floor will amplify lower frequencies in a sometimes not desirable way since it may lead to an indistinct sound recreation This amplification becomes even more obvious if the loudspeaker is placed near a corner Thus for a sound as clear as possible the loudspeaker should be placed at least 30 cm about 12 inch away from the wall Some constructions are made to be placed closed to a wall Quadratic rooms or rooms where the length is
8. y the product Functional reference XTZ SUB AMP1 Rear panel Main switch ON OFF VOLUME FREQUENCY EQ1 EQ 2 Power switch Press down I to power on and the indicator will be lighted Press 0 to power off Make sure it is set OFF when connecting disconnecting cables There is an automatic switch on the subwoofer When it has signal in it will switch on and consequently switch to standby this is indicated by the LED which turns blue when standby is present when no signal is present after a certain time period Therefore you can have it ON constantly Controls volume level of subwoofer Be gentle on the volume knob please remember that certain sound signals may containa lot of energy Variable control from 40Hz to 250Hz provides 3dB optimum setting of subwoofer crossover frequency to match crossover frequency of Home Theatre components Increases 7dB 25Hz Increases 7dB 50Hz To obtain the optimal sound you should let the subwoofer be in ON mode The amplifier will then immediately have the right working temperature from the beginning Turn off the subwoofer if it is not in use for along period Excessive use of EQ can lead to damage of the subwoofer when used at high volumes Excessive use of EQ can lead to damage of the subwoofer when used at high volumes EQ 2 and High Pass filter should not be used at same time PHASE HIGH PASS BALANCE LINE IN SPEAKER IN
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