Flatline Compressor Layout

[Laus]

Don't know if this is the right topic...but I have two small questions about the schematic.

- what's the role of R1 being as heigh as 10M? Won't that pop when switching?
- is there a way to me the diodes not Ge but Si and compensate that somewhere?

thnx!

[markm]

Mine doesn't Pop. 
I beleive the Ge Diodes are essential for the circuit to function correctly.

[blanik]

how does the flatline compare to the Ross or OS (generic description)?

R.
i'm not entirely satisfied with the Ross and i've realised i need more the sustain fx than the compress fx...

[markm]

i need more the sustain fx than the compress fx...

I don't think you can acheive one without the other really.....

[blanik]

as long as it sustains... 

what is the good reason for me to build a Flatline to replace my Ross?

R.

[markm]

what is the good reason for me to build a Flatline to replace my Ross?
R.

I'm not sure I can actually give you a reason to build it.
The Flatline sounds very good but, I don't know as if it can offer you more sustain than the Ross.
I can assure you though that it will sound different! 

[blanik]

what is the good reason for me to build a Flatline to replace my Ross?
R.

I'm not sure I can actually give you a reason to build it.
The Flatline sounds very good but, I don't know as if it can offer you more sustain than the Ross.
I can assure you though that it will sound different! 

good thing you're not a compressor salesman...! 



i like the Ross but there's something missing in my sound when it's on, it narrows to much the frequencies or something... so far the best stompbox comp i tried was the Punch Factory by Aphex...

i heard good thing here about the flatline (specialy from you! lol) so i was wondering if this one might have been my DIY punch factory... 

[markm]

i heard good thing here about the flatline (specialy from you! lol) so i was wondering if this one might have been my DIY punch factory... 

Okay.
I'll accept the responsibility!
Being that the Flatline is of the optical design, I would think it would get you closer to the Punch Factory than the Ross will.
With that said though, having never used or heard the Punch Factory, I have to say that the 280a Comp may be closer still although the 280a circuit does suffer from quite a slow recovery when set at or near max compression.

[blanik]

you're right, it might be the optical thing... nerver tried one (dunno if the Punch Factory optical?)...

[markm]

you're right, it might be the optical thing... nerver tried one (dunno if the Punch Factory optical?)...

Yeah, it is.

[djwackfriz]

Hi guys

I just finished building this circuit on PCB, but I'm getting a ground short somewhere - I forgot to check continuity, put in the battery, and a minute later the battery was too hot to touch!

I've cut into the board wherever there is the possibility of a solder bridge, double checked the orientation of the VTL5C2 and the TL072, as well as pots / jack / switch...

is there any way G5 (which decouples) could be causing a ground short? It IS oriented according to the layout...

[djwackfriz]

OK update, I removed D5, and the short went away and the circuit sounds AWESOME... totally blows away my BBE Opto-Stomp as far as sustain and volume. Awesome job guys!