My Pass F5 Build

[bibin3210]

Curiosity from an electronics illiterate ...

What are the components on long, yellow-insulated wires, and what is the reason for them being mounted high off the board? Sticking my head out with a guess: anything to do with temperature sensing?

Yes, you are right. They are thermistors and will be bend towards the MOSFET after fixing it on the heatsink.

thanks,
Bibin

 

[kroyin]

After so much love and care why not 2
sk170/2sj74? They would be worthwhile upgrades

 

[bibin3210]

After so much love and care why not 2
sk170/2sj74? They would be worthwhile upgrades

I will get it from Spencer and upgrade. Is there any noticeable difference in the SQ?

Thanks,
Bibin

 

[kroyin]

I think the jfets supplied are lower power version of 170/74.

Since you upgraded the resistors (improvement on mostly asthetics than SQ) think you should upgrade the JFETS (probable SQ improvement)

 

[bibin3210]

Completed the source selector last weekend.





Cost: 250 INR

Source selector rotary switch:



Cost: 65 INR

Source selector and its power supply:



Knobs for the source selector and volume pot:



Cost: 650 INR (From HK)

The source selector along with the preamp (DIY B1) will be mounted in a separate cabin



Cost: 2500 INR

Here is the drawing of the cabin:


Cost: Approx. 1500 INR

 

[denom]

Great going as usual Bibin

Waiting to see pics of the Cab now, you know why If it is looking as good as it is on the blue print, am sure we will have some action on the group buy front being discussed in the Pass B1 thread :licklips:

 

[spirovious]

I eager to see the final product & read review.Nice work Bibin.

 

[apk]

The cabinet design looks very nice. Now to see it in real!

Can you post the link from where you purchased the source selector and volume knobs.

Thanks.

 

[TheCoolestOne]

Looks good Bibin. Once you post the pics of the finished product i'm sure many people will want to order one

 

[apk]

Looks good Bibin. Once you post the pics of the finished product i'm sure many people will want to order one

+1. I think many of us (including me) who are participating in the B1 group buy would be interested in a good quality decently priced cabinet. Let's hope Bibin's cabinet can meet that criteria.

 

[bibin3210]

The cabinet design looks very nice. Now to see it in real!

Can you post the link from where you purchased the source selector and volume knobs.

Thanks.

I brought those knobs from ebay.

Aviation Grade Aluminum Knob 09 Volume Control Potentiometer and Switch | eBay

Source selector is made by me.

Thanks,
Bibin

 

[bibin3210]

Finally the Cabs are ready and the front and back panels will be ready by tomorrow.

Today completed measuring the PCB holes and made holes on the cabinet and fixed the threaded spacers and internal connectors.

Posting few snaps here:

















Thanks,
Bibin

 

[anilva]

Looks very well made cabinet. Are you planning to mount the heatsinks with fins aligned horizontally. If yes, it may not be the best thing to do unless there is forced air through the fins.

Looking forward to the completed pictures.

Cheers.

 

[bijinmb]

Looks pretty neat and shipshape arrangement for the PCB mounting...

 

[kroyin]

Anil is right...these sinks (I'm guessing 6x12) placed horizontally, with .6V bias without force cooling will reach 65~75c.

Good that you have spk protection in place

But an excellent build

 

[bibin3210]

Looks very well made cabinet. Are you planning to mount the heatsinks with fins aligned horizontally. If yes, it may not be the best thing to do unless there is forced air through the fins.

Looking forward to the completed pictures.

Cheers.

Thank you Anil. The Cabs are made by the same guy who is making cabinets for "TORVIN".

Yes i am mounting it horizontally and i am aware of the efficiency drop. But i want those seamless horizontal lines on the cab sides just for the aesthetics. As you mentioned i will be providing forced air to the fins through the rack.

Thanks,
Bibin

 

[bibin3210]

Anil is right...these sinks (I'm guessing 6x12) placed horizontally, with .6V bias without force cooling will reach 65~75c.

Good that you have spk protection in place

But an excellent build

Thank you Kroyin. Yes i am using Speaker Protection and Soft Start board.

Thanks,
Bibin

 

[gopib]

Very nice cabinet. Good amount of planning must have gone into this. kudos. The layout will be something I would look forward to. It will certainly be awesome.:clapping:

 

[bibin3210]

The front and back panels for B1 and F5 are ready.

















Thanks,
Bibin

 

[anilva]

Outstanding machining....Great looks and finish.