A guide to building the Pass F4 amplifier

[buzzforb]

Do you have a link? That would be a very useful reference.

 

[Triodethom]

Go to Home > Forums > Amplifiers > Power Supplies > Power Supply Resevoir Size

Post 1843 . Then go from there Goatee has done the work in a spreadsheet for us.

 

[buzzforb]

Thank you very much. A great asset.

 

[bnorrish]

What post # has the spreadsheet?

 

[Triodethom]

What post # has the spreadsheet?

post 1843 in the above power supply reserve thread .

 

[thor61]

Just ordered a Large Illuminated Black Anodized Anti-Vandal switch to be used with the Diy Store Soft start.... See link > http://www.diyaudio.com/forums/swap...ated-black-anodized-anti-vandal-switches.html it's a really great deal ! See Pic >

 

[PKI]

What are the max voltage and current for those switches?

 

[thor61]

250v @ 5amps Click on above link as a Diy member is selling them ! The price is $ 18.54 shipped to US address, also he is trying to get a group-buy going which should cut prices alot ! Using this switch with the Diy-Store Soft start pcb is far cheaper than using a conventional Vandal sw circuit with its own transformer and then still needing various parts and thermisters to control start-up ect...

 

[Russellc]

Interesting - board is $7. I have not looked the the BAs that closely. Anyone post one of those to make standalone preamp? Need to add some sort of attenuation for volume. I am sure there are a few other details.

Their is a thread in here somewhere, poster has B-1 into BA-3 FE, then to F-4. I was asking questions about the smaller transformer when using as FE...I'll try to find it.

Russellc

 

[thor61]

For anyone looking for Psu capacitors check this guy out > http://www.diyaudio.com/forums/vend...vishay-058-15000uf-40v-caps-f5-turbo-amp.html He has some of the best business ethics and service I have ever experienced ! Also great stuff and prices... Now I know why I confused, one minuit where talking about the psu section of the amp then we somehow jump into F4 front end options. See pic >

 

[Russellc]

Interesting - board is $7. I have not looked the the BAs that closely. Anyone post one of those to make standalone preamp? Need to add some sort of attenuation for volume. I am sure there are a few other details.

Have a look at this:

http://www.diyaudio.com/forums/pass-labs/196857-between-f4-f5.html

Look at the part when Timbarnes shows his set-up.

Russellc

 

[thor61]

Russellc, Great link it answers many questions I and others probably been wondering about but had not been ready to ask. Still trying to get past the building stages. Forums are great, much better than a book. Books don't reply or offer multiple perspectives.

 

[bnorrish]

Have a look at this:

http://www.diyaudio.com/forums/pass-labs/196857-between-f4-f5.html

Look at the part when Timbarnes shows his set-up.

Russellc

Thank you for digging this up. My boards (F4 and BA-3) came in the mail today. I already have the Mezmerize B-1 board. I may give the B-1/BA-3 a shot.

 

[rcck1688]

Can you tell where can I buy the user friendly baseplate?

 

[bnorrish]

Can you tell where can I buy the user friendly baseplate?

It comes with the 4u and 5u chassis in the DIYAudio store.

 

[palmito]

It comes with the 4u and 5u chassis in the DIYAudio store.

The plates by themselves are available in the spare parts section of the chassis part of the store.

 

[AudioSan]

maybe mention that he also can get it from modushop?
modushop.biz

 

[thor61]

What is the minimum heatsink required for building a stock F4 with-out running into problems ? Most of these amps are huge ! Could one use one of these enclosures ? See link > http://www.modushop.biz/ecommerce/cat079_l2.php?n=1

 

[6L6]

Probably something the size of the "Jack of all Chassis' 165mm x 300mm (6.5" x 11.8")

Of course you could run less bias, or use a fan. There are some very quiet fans available.

 

[thor61]

Would the above case work for a stock F5 ? The reason for my questions are I have a chance to pick one up half price. But I dont really need more stuff laying around till I find a use ! Its the one with 300 x 120 x 40 heatsinks. If not the F5 haw about a Aleph 3 or Zen Mods Babbel-fish with 2 output devices ? I have 90% of the needed parts for my F4, then this deal comes along (To much like Murphys law)