icon Audio MB 845i Скачать руководство пользователя страница 9 | Manualshive

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Page 9

9 Guarantee

Thank you for purchasing one of our amplifiers. We
hope you will be pleased with it.

This amplifier is guaranteed by the dealer you
purchased from for 12 months from the date of
purchase for parts and labour, excluding
shipping. Valves are consumables and therefore
on a 12 months pro-rata wear basis. Please keep
your receipt as proof of purchase, this will be
needed.

All units are individually tested for performance for at
least six hours before despatch to you. In the unlikely
event  that  you  believe  the  unit  is  not  functioning
correctly,  it  may  be  helpful  to  contact  us  first  as  we
may  be  able  to  assist  you.  Then  we  would  request
that you return the item to us for further action.

You  are  advised  to  inform  us  of  any  change  of
address or change of ownership in order that we may
keep  you  up  to  date  of  any  upgrades  or
improvements. Check our website.

Exclusions

Claims for any damage to either amplifiers or valves
must be reported within three days of receipt.

This  amplifier  is  designed  for  normal  domestic  hi  fi
use.  It  is  not  guaranteed  for  commercial,  Public
Address  use,  or  use  in  other  situations.  The

guarantee becomes void if the unit has been
modified in any way not approved by Icon Audio.

10 Packing Instructions

It is essential that the original box and packing be
kept in good condition, as this provides vital
protection during transit. Please do not write on
box, but use removable labels.

Should the original

box and packaging be lost or become unusable a
repacking charge of one hundred pounds will be
made.



Re-use the supplied plastic bag to keep the

amp clean and free from damp.



The mains lead fits in a foam cut-out

underneath the amplifier.



Send the valve covers and valves in the
separate supplied box. See above for
valve removal.



Valves should be removed, numbered and

packed in “Bubblewrap” or similar for
protection inside the valve cover.



If the amplifier is stored in the box, keep

upright.



Do not store in damp conditions as the

transformer windings may corrode.



If the amplifiers are shipped insurance is

desirable due to the high unit value.

icon Audio

UK LTD

351 Aylestone Road Leicester LE2 8TA

Email: [email protected] Website: www.iconaudio.com

Phone +44 (0) 116 244 0593 Cell +44 (0) 778 715 8791

Fax 0116 244 0593

2019-07-26 G version

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Содержание MB 845i

Страница 1: ...dealer or one of our team Valve amplifiers do need a little more attention than their solid state counterparts but the sonic results are well worth it In this manual we have tried to include everything that you need to know Please let us know if you find any errors or feel that we have missed anything out The MB 845i are push pull all triode power amplifiers using the fabulous 845 high power triod...

Страница 2: ...ode N A Run min 6 hour test Check input Output Valve Bias level v Sound Quality Channel Balance Valve Microphony Valve Seating Hum level L R mv RF Test LED brightness Serial No sticker and recorded Mains voltage 110 120 230 240V IEC Mains Fuse 5A Soft Start Fitted N A Sales invoice Bottom label Credit card receipt Customer survey form Bias meter Transformer Protection N A Upgrades Output valves 1s...

Страница 3: ...Page 3 MB 845i Valve Insertion ...

Страница 4: ...to Earth terminal 6 SWITCH ON The blue mains indicator should light up The 845s will glow bright yellow You will likely hear a humming noise for about 20 secs through your speakers this is normal After about 40 seconds the amplifier should now be working The small valves should have a visible orange glow from the cathode heaters With the pre amp volume control set to minimum there should be no sou...

Страница 5: ...the system up and play some music with plenty of bass e g dance music preferably in mono FM tuners are usually switchable to mono and stand the speakers close together If correct you should hear plenty of bass if not reverse the terminals for one channel only either at the amp or speaker You will now hear more or less bass The higher bass output is the correct setting to use Another alternative is...

Страница 6: ...inate or prove which component if the problem Left or right amplifier If both probably the source unit Try another source If one amplifier is distorted check the bias No bias reading means either a fuse blown or a faulty valve Distorted sound at higher volumes may be because one of the output 845i valves is not working This could be due a faulty 845 or one of the MB845i internal fuses blowing A sy...

Страница 7: ...ar in mind that your mains voltage fluctuations can affect your readings by up to 10 If all the valves are reading slightly high or slightly low this is usually due to mains fluctuation In this case no adjustment is necessary TIP If one or two valves are out of line with the average only adjust those valves to the settings of the others Showing a probe in output valve test point 4 Adjusting If all...

Страница 8: ...nt bias Most people find it easier to do a course adjustment within 10 of 180mv and then do a final adjustment when the amplifier is fully warmed up If all is well there should be no more than a barely detectable hum from the speakers and the amplifier should sound OK when tested You may need to adjust the Hum Adj screw see section 6 6 If you cannot set up 180mv then the valve is probably faulty o...

Страница 9: ...use It is not guaranteed for commercial Public Address use or use in other situations The guarantee becomes void if the unit has been modified in any way not approved by Icon Audio 10 Packing Instructions It is essential that the original box and packing be kept in good condition as this provides vital protection during transit Please do not write on box but use removable labels Should the origina...

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