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Owner’s

Manual

Model

 

S E 8 4 U F O 3

 

Stereo Power Amplifier

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Содержание SE84UFO3

Страница 1: ...Owner s Manual Model S E 8 4 U F O 3 Stereo Power Amplifier ...

Страница 2: ...utlet that is up to present day electrical code 6 Always maintain quick access to the power cord outlet so that the unit can be unplugged for emergency power disconnect 7 Always replace fuses with the same type and ra ng speciﬁed on the product s cker Defea ng the fuse or installing a fuse that is too large will void the life me warranty 8 Only install or replace tubes when the unit is oﬀ and the ...

Страница 3: ...cement tubes such as those that shipped with the product are available from Decware Replace tubes every 3000 5000 hours TUBE LOCATIONS 5U4 RECTIFIER OUTPUT TUBE 6P15P EL84 INPUT TUBE 6922 6N1P 6N5P Tubes should be carefully installed prior to hooking up your product Tube sockets can seem unusually ght when the product is new be sure to get the tubes worked down fully so that the base of the tube t...

Страница 4: ...cks are shorted together There is a HI LO switch next to the speaker jacks on the ampliﬁer This is used to match the ampliﬁer to a given loudspeaker load It is operated while music is playing and selected by ear for the best sound The ampliﬁer will work ﬁne with the HI LO switch in either posi on regardless of speaker load however each seing will make your speaker sound diﬀerent or perform diﬀeren...

Страница 5: ...equipped with a volume control If using a preamp connect the output of the preamp to one of the two input jacks on the ampliﬁer and set the ampliﬁer s volume control somewhere between 1 2 way up and full Use the volume control on your preamp to adjust listening volumes This ampliﬁer requires about 2 volts to come to full power 2 Volts is the average output signal level found in most line level dev...

Страница 6: ...ct into the air which is then re absorbed by the glass tubes causing worse sound than if no condi oner was used Excep ons are Isola on transformers such as the Tripplite brand model ISO 500 or a power re generator Always try to avoid power strips or extension cords whenever possible as they can cause ground loops between your components resul ng in hum We recommend the ISO 500 when power condi oni...

Страница 7: ... input tube and compa ble alternate such as 6922 6DJ8 7DJ8 6N23P 6N5P 6N11 can all be operated at more than one bias point resul ng in diﬀerent sounds from each There is no right or wrong seing for any of the above men oned tubes Simply listen to the amp with both seings and select the best one to your ears NOTE When opera ng the bias switch while the ampliﬁer is on you will hear a pop sound come ...

Страница 8: ...he rec ﬁer tube so there are likely several more pin for pin compa ble op ons that are not listed here 1 Turn the volume control on the ampliﬁer all the way down 2 Turn on the upstream components ﬁrst such as your source and preamp if you re using one 3 Turn on the power ampliﬁer and wait 60 seconds for it to warm up and then slowly raise the volume control Tube Rolling Sequence of Opera on ON 1 T...

Страница 9: ...d see if the ampliﬁer sounds any beIer or stronger For example the two 6P15P EB output tubes can be replaced with a new set and then the ampliﬁer can be listened to If no substan al improvements are heard the new tubes can be returned to their boxes and the test can be repeated again in 6 months or whenever there is doubt The same can be done for the INPUT tube and the RECTIFIER tube Always have a...

Страница 10: ...arts are capacitors and resistors which are all too easy to replace In the event that your ampliﬁer does need service please contact Decware so we can help you troubleshoot the amp by phone or make arrangements for the products return to Decware for inspec on and repair The life me warranty covers defects in materials and workmanship under normal use and opera ng condi ons Tubes have a separate 90...

Страница 11: ... Consump on 65 WaIs Circuit Design Single Ended Triode Nega ve Feedback None THD 2 24 1 waI 20 20kHz 0 14 2nd H SNR 79dB HUM 64dB Tube Rec ﬁer 1 5U4 or 5AR4 or 5Y3GT Output Tubes 2 EL84 or 6P15P EV Input Tube 1 6922 or 6N1P or 6DJ8 or 7DJ8 or 6N5P Size Dimensions 8 0 H x 6 125 W x 12 0 D Weight 17 lbs Fused 5 x 20 mm 3 AMP 120V or 1 6 AMP 240V Norm Temperature Transformer 130 F 80 F ambient room S...

Страница 12: ...t used Re route cable away from power supplies and power cords or replace with shielded cable Digital Light Dimmer s on same circuit Turn off digital dimmers WIFI bridge or router nearby Locate farther away from audio components Hum from amp itself Chattering rectifier tube Tap on tube to see if chattering stops and if so replace rectifier tube Power transformer Poor voltage or over voltage at the...

Страница 13: ...nel stops working No signal to that channel Take the cable from the channel that works and put it into the channel that stopped working If it starts working the amp is fine but you have either a bad cable or problem with your preamp or source component Speaker cable came unhooked Reinstall speaker cable Output tube failed Replace output tube Channel imbalance Output tubes no longer match Replace o...

Страница 14: ...e switch is set to the wrong source Adjust the switch to the other position Your source is not playing Start source Interconnect cables are unhooked Reinstall interconnect cables Incorrect tubes are installed Install correct tube types tubes are installed in the wrong locations Reinstall tube in the correct locations Sound is real weak Source switch set to wrong source Reduce volume and Adjust sou...

Страница 15: ...ed single ended transformers are used to ensure no transparency is lost in the output transformer itself Addi onally a triode circuit is used which is linear under a wide range of speaker loads so that it requires no ﬁdelity robbing nega ve feedback To ensure 2 waIs can drive diﬃcult speaker loads the primary impedance ra o for the output stage is much higher than normal so that when a speaker s i...

Страница 16: ... vast majority of us are unaware of true poten al of holographic imaging Even those of us lucky enough to witness really perfect rooms didn t hear it for the handicap of the mass produced retailed audio gear used for the demos Please invest some me in hun ng down the weak links in your audio chain as you enjoy the wonderful sound of this amp As you do you ll hear your amp again for the ﬁrst me and...

Страница 17: ...OWNERS MANUAL for Model SE84UFO3 PAGE 17 ...

Страница 18: ...OWNERS MANUAL for Model SE84UFO3 PAGE 18 DATE INSTALLED TUBE TYPE TUBE replacement LOG ...

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