New at runoffgroove.com: Ginger

[B Tremblay]

Ginger is our redesigned and improved version of the Flipster.  It much more accurately resembles the character of the Ampeg SB-12 Portaflex amp that inspired it.  Check it out: http://runoffgroove.com/ginger.html

Six sound clips are available on the Sounds page: http://runoffgroove.com/salvo.html#ginger

[Bill Mountain]

As a bassist always in search of the next killer bass distortion, I am super excited about this update.  The original flipster was way cool!

[Bill Mountain]

I broke away from finals to take listen.  This sounds killer.

[joegagan]

brian, i read the notes and applaud your drive to get it better and better. also, nice that you strayed outside the lines of the original circ to pay homage to the sound of the original.

the clips sound great. i know a lot of bass players will dig this.

[John Lyons]

Strange how the guitar clips all have some noticeable overdrive but the bass clips (other than the last
one) are not overdriven much at all. The bass playing seemed lite handed...maybe that's it.
Either way, nice work fellas!

[akc1973]

Sounds great! 

[bigandtall]

Anyone want to do a run of pcbs? 

[chi_boy]

Anyone want to do a run of pcbs? 

+1 for that.

Sounds great on guitar.

[wesman26]

Strong approval.

Is there any reason the red LEDs by Q1 and Q2 can't be replaced with 1N5818's in the manner they are placed by Q3?

[azrael]

Looks like a sweet design.

Could you not scale down the 1M resistor in the mu-amp stage to like 470K? Just trying to wrap my head around the circuit, looking forward to putting one together.

[DavenPaget]

Looks like a sweet design.

Could you not scale down the 1M resistor in the mu-amp stage to like 470K? Just trying to wrap my head around the circuit, looking forward to putting one together.

1M is fine .

[stm]

Strong approval.

Is there any reason the red LEDs by Q1 and Q2 can't be replaced with 1N5818's in the manner they are placed by Q3?

The diodes on the first two 2N5457 JFETs are chosen as red LEDs because their conduction voltage (aprox. 1.5V) is very similar to the maximum input voltage without clipping for the 2N5457.  This prevents harder clipping.  Eventually three silicon diodes in each direction could be used.

[Bill Mountain]

Strong approval.

Is there any reason the red LEDs by Q1 and Q2 can't be replaced with 1N5818's in the manner they are placed by Q3?

The diodes on the first two 2N5457 JFETs are chosen as red LEDs because their conduction voltage (aprox. 1.5V) is very similar to the maximum input voltage without clipping for the 2N5457.  This prevents harder clipping.  Eventually three silicon diodes in each direction could be used.

So, this is the first time I've seen this done.  Could this technique be used on any signal you don't want getting too hot before it hits an active component?

[frequencycentral]

I thought this project would benefit from a PCB with all the pads along the edge, option for various trimmer sizes, and no standing resistors. I believe it to be correct, but still need to check it. Anyone fancy going over it for errors?

[wesman26]

Strong approval.

Is there any reason the red LEDs by Q1 and Q2 can't be replaced with 1N5818's in the manner they are placed by Q3?

The diodes on the first two 2N5457 JFETs are chosen as red LEDs because their conduction voltage (aprox. 1.5V) is very similar to the maximum input voltage without clipping for the 2N5457.  This prevents harder clipping.  Eventually three silicon diodes in each direction could be used.

So, this is the first time I've seen this done.  Could this technique be used on any signal you don't want getting too hot before it hits an active component?

I've also never seen this done.  Very cool.

[Davelectro]

Trimpot pads are wrong.

[chi_boy]

Trimpot pads are wrong.

I respectfully disagree.  Why are they wrong?


@frequencycentral - It's a little tough to check without the part values or a part numbered schematic. 

[Davelectro]

Trimpot pads are wrong.

I respectfully disagree.  Why are they wrong?

I might be missing something here but all their leads seem to share the same trace. They are not supposed to work as variable resistors that way.

Edit: Nevermind. I got it.  I was confused because leads are hardly noticeable over the black pads.

[frequencycentral]

I've updated my layout (above) with component values. If it's not showing above with the values, refresh your cookies and pour a glass of milk. Still needs a little check over.

@frequencycentral - It's a little tough to check without the part values or a part numbered schematic. 

When I do layouts, I find I work quicker if I don't add the values when I add the components. And when I add the values later I have to cross reference between the schematic and the layout, which is a bit of a  double check of the layout. So......it may be a little tough to check without the part values, but........that's how I roll. 

[chi_boy]

When I do layouts, I find I work quicker if I don't add the values when I add the components. And when I add the values later I have to cross reference between the schematic and the layout, which is a bit of a  double check of the layout. So......it may be a little tough to check without the part values, but........that's how I roll. 

That's cool.  I'm just a rookie.  Thought I would try, but kept getting lost.  Practice, Practice, Practice.....