compressor schematic/design for guitar

[radix]

I'd like to build a compressor for bass guitar. I'm thinking of doing a JFET variable resistor and opamp design. Does anyone have a favorite compressor design or schematic for electric guitar or bass?

Yes, I know I can buy some for $25, but I'd like to tinker.

 

[AlfaNovember]

Have you looked at the Engineer's Thumb?

 

[radix]

Have you looked at the Engineer's Thumb?

Interesting, thanks. That's a fair bit more involved than what I was looking at before, but looks nice.

 

[radix]

Have you looked at the Engineer's Thumb?

I was able to order the PCB from OSH Park fro $26 for 3 boards using the Gerber files on the web site. We'll see how it goes. First time using OSH. good price, but takes a bit as they need to fill out a full panel before cutting it up.

I'll post the extras for sale once I get one assembled.

I was able to get all the parts from Mouser. They had the transconductance amp chip in DIP.

 

[AlfaNovember]

The sunsetting of DIP packaging is going to be the end of us amateur solder slingers, eh? I built an ET using Merlin's now-discontinued board; it worked well but as a couch noodler I've found I don't use it much.

 

[radix]

The sunsetting of DIP packaging is going to be the end of us amateur solder slingers, eh? I built an ET using Merlin's now-discontinued board; it worked well but as a couch noodler I've found I don't use it much.

I've seen guys do SMT really well using flux + small solder "spot joint" to fix the part in place, then solder pins. Even doing 100-pin packages and the super tiny parts. And they are pretty fast. I guess I just need to bite the bullet and get a surface mount board and parts and practice.

 

[Count Arthur]

I've seen guys do SMT really well using flux + small solder "spot joint" to fix the part in place, then solder pins. Even doing 100-pin packages and the super tiny parts. And they are pretty fast. I guess I just need to bite the bullet and get a surface mount board and parts and practice.

You can get cheap practice kits on Amazon and Ebay:

Amazon.co.uk : smd practice kit

SMD SMT Components Practice Board Solder Skill Training Beginner DIY Kit r | eBay

Description: <br>This is a perfect Soldering skills training materials for beginners <br> <br>Specifications: <br>Board Size: 80x60mm/3.15x2.36" <br>Quantity: 1 Set <br> <br>Note: <br>Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid <br>Due to the...

www.ebay.co.uk

 

[rationaltime]

I've seen guys do SMT really well using flux + small solder "spot joint" to fix the part in place, then solder pins. Even doing 100-pin packages and the super tiny parts. And they are pretty fast. I guess I just need to bite the bullet and get a surface mount board and parts and practice.

How do you solder BGA s at home?

 

[radix]

How do you solder BGA s at home?

It's a QFN, not a BGA.

 

[Ixnay]

I really like the Madbean Afterlife but the site says "Sold Out" for the kits. All the data is still there.

 

[Cbdb2]

For my DIY guitar amp I used a That Corp IC. Sota. Lots of compressor designs here. https://thatcorp.com/pedal-page/
And it was SMD. I soldered it to a smd to dip adapter, wasn't hard.

 

[radix]

I was able to order the PCB from OSH Park fro $26 for 3 boards using the Gerber files on the web site. We'll see how it goes. First time using OSH. good price, but takes a bit as they need to fill out a full panel before cutting it up.

I'll post the extras for sale once I get one assembled.

I was able to get all the parts from Mouser. They had the transconductance amp chip in DIP.

I got the boards from OSH Park. I placed the order on 3/25, and it was upgraded to a "swift" fab on 3/26. Someone else ordered a swift, and they were able to fit my layout in that same fab order. No extra cost. It shipped on 4/1 and I received it on 4/5, via standard post office shipping. Total time: 11 days. For $26, not bad, IMO.

Here's some photos of a partially assembled board.