Pass B1

Audiolab 9000N
hmm

i was misled by audiodocs layout
i think hes layed out the PCB vertically
(which is not a bad thing actually - omishras wiring is going all around the PCB - the vertical arrangment would counter that - would it not?

also wouldnt the trafo be towards the rear it doesnt need to be side by side with the pass PCB does it? - it can overlap at the rear correct?

i think audiodocs arrangemnt would require a 9 inch width and a 10-11 inch depth
Omishra layout wouldl require a 13 inch width and maybe even an 8 inch depth

a 13 *10 cab would be the most versatile i guess for almost any build
hmm will see how much matl ive got
 
magma said:
hmm

i was misled by audiodocs layout
i think hes layed out the PCB vertically
(which is not a bad thing actually - omishras wiring is going all around the PCB - the vertical arrangment would counter that - would it not?

also wouldnt the trafo be towards the rear it doesnt need to be side by side with the pass PCB does it? - it can overlap at the rear correct?

i think audiodocs arrangemnt would require a 9 inch width and a 10-11 inch depth
Omishra layout wouldl require a 13 inch width and maybe even an 8 inch depth

a 13 *10 cab would be the most versatile i guess for almost any build
hmm will see how much matl ive got
Click to expand...

You are correct, if you keep PASS B1 volume control position at the front then input is at LHS and PS + output is that RHS. You have to make RCA output, r-core and PS at RHS and input RCA at LHS(Opposite to my layout). As per Audiodoc's layout, on making it vertical make signal wire longer for me. But it could fit to 9" X 9" or 10"X10".

I given preference to audio signal doing shortest path because power lines are filtered at destination on any board but audio is not. There everything goes away for PS and you need at least 13" X 8" (WXD). I am inspired more by rack mountable gadgets. :) That reflect in my choice of layout.

Ideally, preference could be wires going away from boards without crossing each other, (like spider legs from its body)
 
Last edited:
hmm
one more doubt

is the volume control knob reqd for all?

if so - where exactly is it to be located ( considering a 12.5inch by 10inch cab )
someone with the actual PCBs please measure and check where the pot , pot pcb, PASS b1 PCB actaully fit
i need the centre distance of the pot from the edge ( internal distance )

rgds
ALi
 
magma said:
hmm

i was misled by audiodocs layout
i think hes layed out the PCB vertically
(which is not a bad thing actually - omishras wiring is going all around the PCB - the vertical arrangment would counter that - would it not?

also wouldnt the trafo be towards the rear it doesnt need to be side by side with the pass PCB does it? - it can overlap at the rear correct?

i think audiodocs arrangemnt would require a 9 inch width and a 10-11 inch depth
Omishra layout wouldl require a 13 inch width and maybe even an 8 inch depth

a 13 *10 cab would be the most versatile i guess for almost any build
hmm will see how much matl ive got
Click to expand...

I would keep input/output wires of b1 as short as possible.

Regards,
Sachin
 
how is this for shortest signal paths i/p and O/p


i have no electronics experience (hence is may be potentially wrong) - just thought this would have shortest wires for i/p and o/p
 
sachu

all cabs i have built for my personal use have the partition
hell, not only do they have a partition - the PSupply sector is almost enclosed in an independent aluminium casing
obviously costs go .....

on the knob front
those knobs can be done- but im really tired of redesigning
i already have a batch of knobs in stock (the same that i used in my last cab build)
 
sachu888 said:
Hi,
I can help you on boards,if there are 10 or more people.Total cost would be 750+shipping(approx) for all three PCbs(B1+LDR+PS).There are few AK members interested for boards.Post your interest here if anyone need boards.
I have received request from following members:
1.Doors
2.Magma
3.Svaze

Regards,
Sachin
Click to expand...


Is this just for boards or for complete kit? If its a complete kit, I can find a taker.

Edit: OMishra and Sachu - Please PM me if any payment/balance is pending for current GB.

--G0bble
 
hmm similar to oms

this is an easier layout for cab work
 
Last edited:
gobble said:
Is this just for boards or for complete kit? If its a complete kit, I can find a taker.

Edit: OMishra and Sachu - Please PM me if any payment/balance is pending for current GB.

--G0bble
Click to expand...

Hi Gobble,
This one is only for boards.I am getting requests from HFV and AK regarding boards,so I thought of another run of PCBs.Complete kit takes too much time and efforts.I will post a complete BOM with links or part no.It took us almost two months to decide right components at reasonable cost.

Regards,
Sachin
 
sachu888 said:
Yes Magma,
your layout is good,but how will you mount LSA board over B1.

Regards,
Sachin
Click to expand...

ahhh... that is the question

i dont know myself .. i can probably manage it if i had the boards using custom setoffs and aluminium panels ...not easy i agree
but theres no way i can design a cab without the boards
nothing will allign!

anyway
i have checked my raw matl
will start a 13*10 cab tomm

i just need the position of the volume control knob to be finalized so someone can at least use what i put together
 
magma said:
how is this for shortest signal paths i/p and O/p


i have no electronics experience (hence is may be potentially wrong) - just thought this would have shortest wires for i/p and o/p
Click to expand...

Magma,

THis is very nice layout.
If you are planning only two input then they are default provided on PASS B1 board. There is provision of toggle switch connected to B1 at LHS of Vol Control will do the selection. Green rectangle is not required.

LSA Vol Control we designed has stereo pot mounted on PCB (2.2" X 2.2").
  1. This stereo pot has fastener/nut mounted to chassis, PCB attached to it. please see my layout. Unnecessary overlap could be avoided.
  2. This PCB could be mounted vertically near PASS B1 board and three wires extended up to chassis mounted stereo pot. These carry PS and variable DC supply for LED. Hence no audio degradation or extension rod is not required.
Other compartments are nice.
 
Last edited:
omishra said:
Magma,

THis is very nice layout.
If you are planning only two input then they are default provided on PASS B1 board. There is provision of toggle switch connected to B1 at LHS of Vol Control will do the selection. Green rectangle is not required.

LSA Vol Control we designed has stereo pot mounted on PCB (2.2" X 2.2").
  1. This stereo pot has fastener/nut mounted to chassis, PCB attached to it. please see my layout. Unnecessary overlap could be avoided.
  2. This PCB could be mounted vertically near PASS B1 board and three wires extended up to chassis mounted stereo pot. These carry PS and variable DC supply for LED. Hence no audio degradation or extension rod is not required.
Other compartments are nice.
Click to expand...

excellent
when and if i make a pass B1 ( correction - when and if, YOU make my pass B1 ) - we'll do what you said above! - :D
 
As have already posted my cabinet is ready. Just waiting for the rcores which omishra will send today (Will pay you at the stroke of midnight today as promised).

Will add a mesh (similar to what omishra has used) between the supply sections and preamplifier board at a later date.

I am planning to replace the two electrolytics with samwha ones with lugs which will be placed off board to reduce the height of the cabinet to a 54 mm.
 
Hi all,
Magma is ready to build cabs for B1.I am opting for one.Please express your interest if you want one.

Regards,
Sachin
 
Thats what I was just asking sachin ....Also was suggesting that if magma cud give an initial rough cost, others can decide ...
 
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