First Gainclone - Help with Parts List

[schmalex]

Hello,
I’ve read through the PDF user guide on chipamp.com (which was very helpful) and browsed this forum extensively. Before I order an LM3875 kit from BrianGT, I want to make sure I have the correct parts list. Could you all look over the list below and tell me if I am on the right track. Any changes, improvements, or less expensive options? I think this is the correct transformer. Have I left out anything? I’m also trying to anticipate cost. I've sourced all my parts from Parts Express to cut down on shipping, but I would be open to getting things elsewhere. This is my first gainclone and I have almost no experience with electronics. Any suggestions are welcomed.

Thanks,
Alex

1 Non-inverting LM3875 rev.3 Stereo Kit - $45
chipamp.com

1 Toroidal Transformer - $42.26
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=122-620

2 Binding Post Pairs - $8.25
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=091-1250

2 RCA Black/Red Pair - $5.30 http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=091-1120

2 pair Spade Terminals - $5.00
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=091-315

1 Chassis Plug - $1.89
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=090-443

1 Pack 2A Fuse - $1.36
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=071-653

Additional Items -
-Internal Wires
-Solder
-Power Cord
-Heat Sink
-Heat Shrink

 

[ScottRHinson]

It doesn't look like the binding posts would be insulated from the chassis....which might be an issue if it's a metal chassis.

Scott

 

[dsavitsk]

I think you want slow blow, and not fast blow fuses.

Here are some cheap insulated binding posts: http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=091-1140

-d

 

[homer09]

your fuses are not compatible with your IEC socket. you need 5x20mm fuses for that socket, not 1-1/4" x 1/4".

start thinking about chasis = hardest part!

is this a true amp, or integrated? if you have two pairs of RCA's, you need a method of switching inputs.

 

[schmalex]

Parts List

Thanks for pointing out some of my minor league errors. My plans are for a NON-integrated amp - the 2 pairs of RCAs was a typo. I also hadn't thought of the need for -insulated- binding posts.

Can anyone comment on the toroidal transformer? Is this the right one? Apex jr. has some much less expensive versions, but I don't know if they will work well.

As for the chassis, I've got some ideas. There's a plastics dealer down the street from me. "Have you considere a future career in plastics?" I'm thinking about picking up some of their scraps and making an acrylic Patek, with a metallized interior for shielding. Haven't quite figured that out yet. And where can I get a solid copper bar out of a trash can...

Thanks

 

[chipco3434]

That tranny will work fine. For a little more umph you could go to the Avel 330VA 2x25v. Five mo' dolla's.

 

[Kofi Annan]

Five mo' dolla's.

Not to be a stickler on the spzellin', but it should be dollaz.

Kzofi

 

[chipco3434]

I meant dollaz.