Decimator Gstring Debug / Help!

[DIMstompboxes]

I see, I found one in eBay c version but still will source somewhere else.
Can someone help point me where it can be bought in London area? or UK
You see I'm using downward expander noisegate but the thing is there is no send/return feature on it, that's why I'm eying to build this one and for comparison also with my Boss NS2 so I could sell it later if this one is a keeper.

Cheers,
Roger  

[Harold]

Just send an email to Gert-Jan of newtone-online.nl if he'd like to sell you a few...

[DIMstompboxes]

Thanks Harold 
Have you tried using it live loud setting? or with single coil pickup?

[Harold]

Thanks Harold 
Have you tried using it live loud setting? or with single coil pickup?

I used it live once, it's on YouTube if you search for Tank86 and Doornroosje.

I don't play single coil guitars, but I guess my enormous amount of gain makes the same amount of noise

[DIMstompboxes]

Thanks buddy, if you find some free time please share it us (final schematic/BOM/parts placement) 
Cheers,
Roger

[Harold]

Thanks buddy, if you find some free time please share it us (final schematic/BOM/parts placement) 
Cheers,
Roger

The schematic I posted is correct; the component placement is on my todo list. I became a father last Thursday, so my priorities have shifted a bit ... 

[jmasciswannabe]

Thanks buddy, if you find some free time please share it us (final schematic/BOM/parts placement) 
Cheers,
Roger

The schematic I posted is correct; the component placement is on my todo list. I became a father last Thursday, so my priorities have shifted a bit ... 

Conrats, man!

[Kipper4]

Congratulations Harold.

[Harold]

Thanx!  

I've managed to paint you guys the 4 components I had to rearrange:



Hope this will help you to build it correctly!

[DIMstompboxes]

Thanks Harold,
I'm searching for the final BOM.....
I also read your post on this

I found this differences between the layout and the schematic:

Component   Schematic   Layout
D3   1N4148   2x1N4148
D4   1N4148   2x1N4148
R9   27K   51K
R10   100K   150K
R12   10M   20M
R13   20K   12K
R14   20K   12K
R30   10K   20K
R32   68K   22K
R37   620R   560R

My friend "Bolachan" username member here got THAT2181C and he's going to build this one, afterward we can compare mine(downward expander noisegate and Boss NS2) with this.
Finally after a long wait since 2007 quest for superb NOISEGATE may come to end   

BTW any replacement for TR/and DUAL suggestion?

Cheers

 

[Harold]

Thanks Harold,
I'm searching for the final BOM.....

I have this in my notes:

100k   5
100R   1
10k   3
12k   2
150k   1
1k   3
1M   5
200k   1
20k   8
20m   2
22k   1
47k   1
51k   1
560R   1
5k1   2
750R   1

100nF   3
100pF   2
100uF   1
10uF   4
1uF   1
22pF   1
22uF   2
330nF   2
470nF   2

400x   1 (didn't use it on my build because of the voltage drop)
1N4148   13
1N5819   1
   
MPS2222A   1
2N5551   1
   
LF347   2
LF353   2
THAT2181C   1
   
10kB   1
1M trim   1

I also read your post on this

I found this differences between the layout and the schematic:

Component   Schematic   Layout
D3   1N4148   2x1N4148
D4   1N4148   2x1N4148
R9   27K   51K
R10   100K   150K
R12   10M   20M
R13   20K   12K
R14   20K   12K
R30   10K   20K
R32   68K   22K
R37   620R   560R

That are the differences between the Decimator and the Decimator G-String, I guess ... I've built both, and the G-String is more sensitive, probably because it only has to track your guitar signal, not your boosted/distorted/etc signal.

BTW any replacement for TR/and DUAL suggestion?

I've used the LF353 and LF347, it's probably work correctly with all JFET Op amps.

[DIMstompboxes]

Ah its clear now  
Anyone, any suggestion for MPS2222A and 2N5551 replacement?

Harold thanks buddy  

[fendman]

Ah its clear now  
Anyone, any suggestion for MPS2222A and 2N5551 replacement?

Harold thanks buddy  

Hey Dim, you can still get the IC's and the MPS2222A , 2N5551  from Farnell UK.

[DIMstompboxes]

Ah its clear now  
Anyone, any suggestion for MPS2222A and 2N5551 replacement?

Harold thanks buddy  

Hey Dim, you can still get the IC's and the MPS2222A , 2N5551  from Farnell UK.

Thanks goodness, my wife shes the one in London. I search into bitsbox only the 4PDT coz I need it now I'll check the FARNELL for IC and TR so she could send it at the same time.  Is it a store or place? Anyway I'm gonna try google it. Thanks Mike good news 

[Govmnt_Lacky]

Just a heads up....

If anyone needs the THAT2181C SIP IC for this.... PM me and Ill see what I can do for you! 

I have built this before and it is THE best noise gate I have ever used.  I am tempted to build the G-string model but, I really dont use my effects loop much so... Is it worth it?

[Harold]

I have built this before and it is THE best noise gate I have ever used.  I am tempted to build the G-string model but, I really dont use my effects loop much so... Is it worth it?

Yes.

As soon as you have anything that boosts or adds dirt to your signal, the loop is a huge improvement!

[DIMstompboxes]

The thread title should now be change to "Decimator Gstring VERIFIED" 

[DIMstompboxes]

Hello Harold, anyone,
1. Is it ok to use 1n914 diode as replacement for 4148 for this job? I got lot of them but no 4148...
2. I counted 6 jumper wire, Am I correct?
3. Trimmer 1M wiper should be attached to r36 (1k) resistor? How do I calibrate this trimmer?
4. Anymore pointer....
Mine just received and I'll have it by end of the month...I also included one pc THAT2181 B version coz their minimum is 20 pounds....
Silly me I found its ok to use 1n914

Cheers,
Roger

[Govmnt_Lacky]

1. Is it ok to use 1n914 diode as replacement for 4148 for this job? I got lot of them but no 4148...
2. I counted 6 jumper wire, Am I correct?
3. Trimmer 1M wiper should be attached to r36 (1k) resistor? How do I calibrate this trimmer?

1) YES
2) No idea. Probably need Harold to answer that one.
3) Set the trimmer so the "effect" level out is the same as the "bypass" volume.

Dont know if the 2181B will be the same as the 2181C. I was under the impression that the "C" version was critical to this build. Please let us know.

[fendman]

Just about got mine built...a few parts still to get. 6 jumpers is what I have, the trimpot on mine will have to be a vert standing as I can't get the Bourns 3362 to fit.

The 20M res I put two 10M in series.

Mike