Komet Aero 33 Owner'S Manual Download Page 10

SPEAKERS FOR THE AERO

33 

 
 
The Aero

 

33

 is a big sounding amp. It is voiced for a sparkling clean sound at low volumes, and 

a  smooth,  dynamic  -  harmonic  overdrive  and  strong  midrange  punch. 

In  our  opinion

,  these 

characteristics  are  best  complimented  with  a  closed  back, 

(preferably  vintage)

 

12

  speaker 

cabinet.  Our  favorite  reference  speakers  for  Komet

  amplifiers  in  general  are  original  coned, 

vintage 12 inch Celestion

 speakers from the 1960’s. You may come to a different conclusion, 

depending on your playing style and preferences.     
 
A  2 

12  cabinet, 

(open or  closed  back)

,  is  another  excellent  choice,  but  care  should  be  taken  to 

select  speakers  that  can  handle  the  power,  low  end,  and  attack.  The  Komet

Amplification 

speaker cabinet lineup is another excellent option. Please see our website 

www.kometamps.com

  

for  full  speaker  cabinet  information.  Whichever  cabinet  you  do  use,  make  sure  you 

set  the 

impedance  selector  correctly

.  If  you  use  two  cabinets,  keep  in  mind  that  the  outputs  are  in 

parallel. This means that if you are operating the amplifier on two, 16 Ohm cabinets,  you must 
set  the  amplifier’s  impedance  selector  to  the  8  Ohm  setting.  If  you  operating  on  two,  8  Ohm 
cabinets, set the selector to 4 Ohms. We do not recommend using two, 4 Ohm cabinets.  Speaker 
wiring diagrams are located at the end of this owner’s manual.  

 
An Important Note on Speaker Cables

Cabinets and Speakers

:  It is crucial that you always 

maintain a solid, un-interrupted signal between your amplifier and speaker cabinet. Sub-standard 
speaker cables as well as sub-standard cabinet wiring can become problematic, intermittent and 
fail over time. This can possibly causing damage to your amplifier and speakers. We recommend 
that you use quality brand speaker cables (

16

 to 

18 gauge is sufficient) made 

with quality male 

input plugs. The speaker cable plugs should be soldered directly on to the internal speaker cable 
wires. Using a quality made speaker cable will ensure a tight fit from the amplifier’s speaker 
jacks to the speaker cabinet.   

 

 
Your speaker cabinet should be equipped with a quality brand input jack. We prefer and use the 
Switchcraft

 #11 mono input on our cabinets, amplifiers and vintage repairs.  Many vintage 

speaker cabinets from the 1960’s to 1970’s used the Switchcraft

 #11 jack. It is reliable, solid 

and time tested. Many modern made brand speaker cabinets use the #11, but not all. Some  
manufacturers have their speaker jacks panel mounted on the back of their cabinets which 
incorporate an internal circuit board on which the jacks are soldered. This type of system is not 
designed for a type #11 jack, and conversion to the #11 can be very tedious. All electrical work 
should be performed by a professional and knowledgeable technician.  
 
We also strongly urge you to inspect and make sure that all of your internal speaker cabinet wire 
leads  are  soldered  at  the  speaker  jack  and  soldered  at  the  speaker  terminals.  We 

do  not

 

recommend using the 

"

slide on

"

 type gripping speaker wire terminals. These grip type terminals 

loosen  over  time  causing  an  interruption  or  failure  of  the  signal.  These  recommendations  help 
guarantee a solid, 

un-interrupted signal

 from the amplifier to the speakers at all times.

  

 

 
Please  note

:

 

Komet

 

Amplification  recommends  using  resistive  load  attenuation  devices

 

in 

conjunction  with  any  Komet

  amplifier  and  speaker  cabinet.  Please  see  our  website 

www.kometamps.com

 

for further information on the Komet

 Airbrake

 attenuator. The owner’s 

manual for the Komet 

Airbrake

 is located at the end of this manual. 

 

 
Copyright 1999-2017, Komet

Amplification. Group, L.L.C.  May not be reproduced in any form without express written consent from Komet

Amplification. 

Summary of Contents for Aero 33

Page 1: ... Komet Aero 33 Owner s Manual Copyright 1999 2017 Komet Amplification Group L L C May not be reproduced in any form without express written consent from Komet Amplification ...

Page 2: ...d in nanoseconds they can cause considerable or permanent damage to electronic equipment Electrical surges can damage electrical equipment by burning or fusing internal wires or by the gradual degradation of a device s internal components The best way to prevent damage is to unplug your amplifier when not in use NOTE Devices such as refrigerators and air conditioners require large amounts of energ...

Page 3: ...ts have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 12 CAUTION To disconnect the unit completely from the Mains unplug the unit Turning the power switch off does not completely disconnect the unit from the Mains 13 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades w...

Page 4: ...uct must not be disposed of with other waste Instead it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment The separate collection and recycling of your waste equipment at the time of disposal will help conserve natural resources and ensure that it is recycled in a manner that ...

Page 5: ... option with most amplifiers is to roll down the treble control The treble control is passive reduces a portion of the signal so the result is a loss of gain and muddy distortion The Hi Cut feature allows you to set the preamp EQ for the right balance by darkening or brightening the overall tone without changing the basic EQ setting 5 Presence Control affects the highest frequencies in the output ...

Page 6: ...art displays the placement of the power and pre amp tubes V1 to V7 7 Fast Gradual switch enables the musician to alter the response characteristics of the amplifier to suit their playing style A simple flip of the switch lets you choose between two different responses to your picking dynamics and guitar s volume control settings This is not an extra gain stage or gain boost circuit Instead it func...

Page 7: ...is another excellent 12AX7 option With this factory stock tube compliment the Aero 33 sounds powerful complex and detailed The distortion is balanced and harmonically rich Please note you may find that some pre amp tubes whether newly manufactured used or even n o s may be too microphonic for the first gain stage V1 of a Komet amplifier A microphonic preamp tube is a condition in which a tube will...

Page 8: ...chords a loss of tightness or punch a weak sounding treble and bass and loss of certain sonic frequencies or note bloom We suggest that you first start by replacing your power tubes Pre amp tubes can last a very long time and do not necessarily need to be replaced as often as the power tubes However we do recommend that you have both the pre amp and power tubes properly tested by a technician betw...

Page 9: ...r tubes that are under biased or drawing too much current will usually create the following symptom a low background hum sound coming from the amp which may get louder as time passes You should inspect the plates of the power tubes the flat grey colored metallic square section inside the center of the power tube s Make sure your amplifier is on Do not confuse the yellow orange filament glow on the...

Page 10: ...er cables 16 to 18 gauge is sufficient made with quality male input plugs The speaker cable plugs should be soldered directly on to the internal speaker cable wires Using a quality made speaker cable will ensure a tight fit from the amplifier s speaker jacks to the speaker cabinet Your speaker cabinet should be equipped with a quality brand input jack We prefer and use the Switchcraft 11 mono inpu...

Page 11: ...del ALWAYS make certain that your AC power cable is unplugged when replacing any fuse Mains Fuse blowing Unplug amplifier from the wall AC Remove the power tubes see precautions section Install a new 3 Amp slow blow fuse 2 Amp slow blow 240V Plug into the wall AC and turn the amp on with no power tubes in the sockets Should the mains fuse continue to blow with no power tubes installed then your am...

Page 12: ...f two things Under normal operating conditions this symptomatic sound can be the result of weak power tubes i e power tubes that have reached their operational lifespan You may also notice this symptom when the volume control and saturation control are completely dimed out 100 even with new power tubes This is a result of both the power tubes and output transformer reaching complete saturation and...

Page 13: ... with us to have your amp shipped back to Komet Amplification for factory service CLEANING We recommend cleaning your head box tolex with a slightly damp warm cloth towel Please be very careful when cleaning the front panel of your Aero 33 head box The points of the plexi glass triangle Komet logo could possibly catch on a cleaning cloth We recommend that you clean the triangle Komet logo starting...

Page 14: ...prove tremendously after being played over time The harmonic complexity will continue to improve the tone will sweeten up and become even more fluid and resonant Have fun Thank you for purchasing our product Michael Kennedy Holger Notzel Co owners Komet Amplification CONTACT Komet Amplification 1865 Dallas Drive Baton Rouge LA 70806 1454 225 926 1976 Email info kometamps com Website www kometamps ...

Page 15: ...4 X 12 16 Ohm Speakers in series parallel for 16 Ohms Note Komet Amplification recommends using a 16 Ohm load with their amplifiers for the best sonic results Copyright 1999 2017 Komet Amplification Group L L C May not be reproduced in any form without express written consent from Komet Amplification ...

Page 16: ...Komet Airbrake Manual Copyright 1999 2017 Komet Amplification Group L L C May not be reproduced in any form without express written consent from Komet Amplification ...

Page 17: ...e overall sound of an amplifier The Komet Airbrake sounds very natural and transparent at reasonable levels of attenuation It allows the user to bring the level of a 50 60 Watt Komet amplifier down to that of a cranked 20 to 25 watt amplifier all the while retaining its distinct voice and dynamics It is therefore best suited to match Komet amplifiers to a smaller room or in a quieter playing setti...

Page 18: ...6 Keep in mind that the combined load of both cabinets or both speaker loads will be 8 Set your amplifier s impedance selector accordingly to 8 Do not use two 8 speaker cabinets The combined load will be 4 which is below the Komet Airbrake 8 16 Ohm operating range For the same reason do not use two 4 cabinets Never combine two cabinets of different impedance ratings for example an 8 cab and a 16 c...

Page 19: ...apability for the Komet Airbrake is 200 Watts under full attenuation You should not have a problem using the Komet Airbrake with a 100W amplifier but it is always best to operate your 100W amplifier and attenuator within reason Note we do not recommend adjusting the Ohm settings via the adjustable lugs located on one of the resistors within the unit They are factory set Final note The Komet Airbra...

Page 20: ...The Komet Airbrake Layout Copyright 1999 2017 Komet Amplification Group L L C May not be reproduced in any form without express written consent from Komet Amplification ...

Page 21: ...setting forth the name address and daytime telephone number of the owner together with a brief description of any claimed defects Parts or product for which replacement is made shall become the property of Komet Amplification The customer may be responsible for all costs of transportation and insurance both to and from Komet Amplification depending on result of inspection and validation of warrant...

Page 22: ... amplifier We are a commercial address Please check any corresponding box on shipping label Please do not return ship your amplifier for Home Delivery service or Saturday delivery Please do not send for early morning before 9 00 A M delivery We prefer afternoon delivery Note Komet Amplification will not be held responsible for any Komet amplifier amplifier component or contents damaged or lost dur...

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