QHW Audio THE BOX II Owner'S Manual Download Page 15

             

THE BOX II      

 
 

Owner's manual 

 

15 

 

 
 
 

You can set gain with The Box II powered 

on or off. If volume is too high or The Box II is 
connected to a very sensitive power amplifier, 
small noises can be heard when switching gain at 
no signal and if there is a signal present while 
doing it, take in consideration increasing gain will 
result in louder sound at your speakers. Therefore, 
be careful with results. 

 

 Operation 

 
 

During operation, LED light in frontal panel 

will be on. This light is not direct and comes from 
interior of enclosure, so depending on angle you 
are viewing it from you will see it brighter or 
dimmer. This has been made this way to avoid LED 
to disturb you when in darkness in your Home 
Theatre watching a movie, in example. 

 

 
 

When The Box II powers up you can hear a 

small noise, especially if it is connected to a very 
sensitive power amplifier. This is normal behavior, 
The Box II does not have mutting relays or 

Summary of Contents for THE BOX II

Page 1: ...THE BOX II Owner s manual...

Page 2: ...THE BOX II Owner s manual 2 Index This manual has the following sections Safety warnings Welcome Rear panel description Installation and connections Setting gain Operation Troubleshooting...

Page 3: ...o a technician before connecting it again in order to verify it didn t suffered damage which can lead to danger DO NOT USE THE EQUIPMENT NEAR WATER This equipment must not be used near water bathtubs...

Page 4: ...CLEANING Disconnect the appliance from mains before cleaning it Use a clean and dry cloth Do not use aggressive cleaning chemicals as glass cleaners because it could damage painting This apparatus mee...

Page 5: ...r sound lovers and congratulations for your intelligent decision This is an electronic instrument designed for accomplish its task with great precision and fidelity for many years This manual will hel...

Page 6: ...THE BOX II Owner s manual 6 Rear panel description 1 DC power input 2 Audio RCA inputs 3 Audio RCA outputs...

Page 7: ...ake sure that The Box II is unplugged from mains and any other equipment taking part in connection is powered off Connect outputs form equipment sourcing signal to The Box II input to the input termin...

Page 8: ...HE BOX II Owner s manual 8 its signal to paying attention to channels LEFT and RIGHT order Following drawings show a generic connection schema and some examples for setting up The Box II in your syste...

Page 9: ...THE BOX II Owner s manual 9...

Page 10: ...THE BOX II Owner s manual 10...

Page 11: ...THE BOX II Owner s manual 11...

Page 12: ...C input is connected internally in the way that positive goes to center pin and negative to sleeve Once all audio wires are connected connect the DC power supply putting firmly the connector in the re...

Page 13: ...4 in The Box II external power supply end Setting gain The Box II features a configurable by user gain This gain can be set to 0 8 3 6 9 5 or 12 dB to suit your needs and tastes Configuration is done...

Page 14: ...1 SW2 SW3 GAIN OFF OFF OFF 0 8 dB ON OFF OFF 3 dB OFF ON OFF 6 dB OFF OFF ON 9 5 dB OFF ON ON 12 dB Rest of positions are not officially supported nevertheless The Box II will sound and work without a...

Page 15: ...rs Therefore be careful with results Operation During operation LED light in frontal panel will be on This light is not direct and comes from interior of enclosure so depending on angle you are viewin...

Page 16: ...ion is low lower than 9 watts and is protected against overcurrent and overvoltage from mains Keeping it always on or to power it on and off each time you use your system is your own decision As any e...

Page 17: ...pecially when the level rises Check all audio cables are firmly put in their terminals Try another cable it may be some damage not visible in an apparently right cable create distortion and strange no...

Page 18: ...ses If possible try to use another mains outlet to see if noise disappears Unplug and disconnect from audio chain all equipment except those essential to see if noise source is a device not working in...

Page 19: ...6 dB or better EIN 123 dBu input terminated with 47 Ohm 6 dB gain Total Harmonic Distortion at 1 KHz 20 Hz 20 KHz passband 0 0006 at any gain up to 4 V RMS of output on 10 KOhm load Intermodulation Di...

Page 20: ...S MANUAL VERSION 1 0 ENGLISH Madrid 15 de marzo de 2021 MADE IN SPAIN 2021 Quality Hi Fi Works Audio S L Puerto Serrano 12 28045 Madrid Tel 34 912794129 email info qhwaudio com THE BOX II Owner s manu...

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