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deathg0d

B22 Casework Modifications!

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Impressions:

http://www.sgheadphones.net/index.php?showtopic=10520&st=15#

 

Finally!!!!!

22/12/2009 B22 was completed!!! After 5 long months of planning, fabrications and improvements, i thnk i am proud to present you everyone here a B22 builded fully in Singapore. Not sure if i am the first but i think i will be the first to complete a 5 channels here.

i would like to express my gratitudes to my partner and friend who provided and aided me with his excellent soldering and electronic skills, where i did the part in designing, sourcing, fabrications and technical researches which by working together we are able to make this project a big success :D

 

here are some brief techincal highlights and the feel of a fully balanced setup ;D

 

B22:

5 channels build

DACT CT2 24 steps potentiometer

Mundorf solders and wires hook up

Canare wires

Amphenol and Neutrik connectors

Switchcraft power connects

Bulgin buttons

Otto 2:1 switch

Integrated o24/e24 solid state transformer and circuit switch

Thermal sensors to prevent overheating

 

Some initial impressions of the following setup Macbook>TOSlink>DA11>B22>Balance K702 (2000+hours)

my live recorded tracks from various concert cds sounded incredible, soundstage is jaw dropping huge with a very 3D presentation. B22 has a very black background even at high volume and each instruments can be distinguish very very easily. however i have not really heard a full balance setup before so when A/B ing balance and unbalance, the presentation are the former will have the singer more upfront and personal feel while the latter will have a more laid back big hall feel.

 

the soundstage and imaging of the balance setup are seriously stunning, there are so much air and i can hear the decay of each note slowly fading away. B22 is really a power beast, it is the first time i can feel the bass from K702, some may still not be satisfied with what K702 can give in the bass, but to me, i find it to be very faithfully reproduce. i cannot imagine how K1000 will perform and will be very tempted to get my hands on a pair if my wallet allows me to after this project :P

 

i will provide more impressions after giving my b22 more run time, for now here are some pictures of the unit.

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Edited by deathg0d

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Wow! :clunk: (sound of jaw dropping on the floor). Great work. Love that front panel too, where did you get it done?

 

 

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front panel and case are fab by a cnc company after much very hard persuasion

 

How much hurt to your wallet was the persuasion? :))

 

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Well done. Wonder how much it cost in total to build this Power Tank? Any chance of mass production??

 

this unit definitely cost alot, however, i can build for anyone who is interested at a fee. it will sure be lower then building it from oversea, however, b22 major cost will still be at it cases unless there is more then 3 pieces then i can nego with the cnc to get cheaper pricing.

 

currently a dude has already requested me to build a 3 channel separate psu and i am working out a cost for him :))

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this unit definitely cost alot, however, i can build for anyone who is interested at a fee. it will sure be lower then building it from oversea, however, b22 major cost will still be at it cases unless there is more then 3 pieces then i can nego with the cnc to get cheaper pricing.

 

currently a dude has already requested me to build a 3 channel separate psu and i am working out a cost for him :))

 

Quote me the price for a 3 channel Balance/SE plus 3 channel dedicated PSU complete. Planning to pair this with a K1000.

 

Await your PM.

Edited by OutdoorXplorer

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Quote me the price for a 3 channel Balance/SE plus 3 channel dedicated PSU complete. Planning to pair this with a K1000.

 

Await your PM.

 

hi bro i think you are not very sure about b22 channels setup relations, thus for the benefits of anyone who are not sure i will give a brief explanations here

b22 channels configs are used in this few ways.

 

3 channels

left,right and active ground - thus this is know as single ended or unbalanced

 

4 channels

left +, left -, right +, right - - can be config to use a passive ground with any two of the boards to work in SE/unbalanced mode.

 

5 channels

left +, left -, right +, right - and active ground - same as 4 channels but the ground utilize a board which amb would recommend as from his specs, active grounding is better then passive grounding.

 

6 channels

it is actually two 3 channels config and that is why a 6 channels can drive 2 SE headphones at the same time. by wiring up the left +, left -, right +, right - channels, it became a balance setup. thus this is also why some people would feel that a 6 channels b22 is an overkill.

 

now do you get the picture on the relationship between the b22 and balance wiring of a headphone?

and as usual, the more the channels are being required, the more the cost will go up in every way from casing, balance volume pot etc.

having a separate psu casing is because it will remove humming due to electronics interferences from the toriods if house within the same box as the box.

Edited by deathg0d

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