Wanted: Two Rock Ruby schematic

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ZxCv84
Posts: 5
Joined: Tue Jun 26, 2007 1:10 pm

Wanted: Two Rock Ruby schematic

Post by ZxCv84 »

Any1 have a decent schematic for this one?
Or maybe even a layout too?
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Darkbluemurder
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Re: Wanted: Two Rock Ruby schematic

Post by Darkbluemurder »

I don't have either but you could check www.proguitar.de. They show pictures of a Ruby in the amp section under the Two Rock subsection. Hope that helps.
ZxCv84
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Re: Wanted: Two Rock Ruby schematic

Post by ZxCv84 »

Thanks, but still can't figure out how they solved the effectsloop.
bluefireamps
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Re: Wanted: Two Rock Ruby schematic

Post by bluefireamps »

PM sent.
Dave
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ZxCv84
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Re: Wanted: Two Rock Ruby schematic

Post by ZxCv84 »

Thanks a lot Dave!
bluefireamps
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Re: Wanted: Two Rock Ruby schematic

Post by bluefireamps »

No problem. I can't vouch for its' accuracy, but I've heard it's correct. Enjoy!
Dave
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mohowski
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Re: Wanted: Two Rock Ruby schematic

Post by mohowski »

Any chance I could get a copy, too? I've been wondering about that one.

Thanks!
jakehop
Posts: 37
Joined: Fri Oct 12, 2007 1:57 pm

Re: Wanted: Two Rock Ruby schematic

Post by jakehop »

I too would like to see that schematic.

Thanks in advance!
korngold
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Joined: Fri Aug 29, 2008 5:46 pm

Re: Wanted: Two Rock Ruby schematic

Post by korngold »

mohowski wrote:Any chance I could get a copy, too? I've been wondering about that one.

Thanks!
+1

Please PM me! Thank you.
breakfastbuddy
Posts: 102
Joined: Wed Aug 02, 2006 7:49 pm
Location: Norway (south)

please bluefireamps

Post by breakfastbuddy »

can you please send me one also . thank you in advance
esp-joh@online.no Espen from Norway
arska
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Joined: Sun Aug 31, 2008 12:23 pm

Re: Wanted: Two Rock Ruby schematic

Post by arska »

Any chance to have a copy?
bluefireamps
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Re: Wanted: Two Rock Ruby schematic

Post by bluefireamps »

Here it is. I didn't draw it, so I don't know if it's accurate. Enjoy!
Dave
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GatesofDawn67
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Location: Peabody, MA USA

Re: Wanted: Two Rock Ruby schematic

Post by GatesofDawn67 »

There is a resistor missing between the return jack and the network feeding the return recovery stage. Otherwise the amount of voltage feedback from the 22M resistor would depend on the output impedance of the FX pedal plugged into the return jack.

Some FX have a passive output where the volume control is connected directly to the output jack. A typical value for this pot is 10k. Max Z out occurs when set to -6dB, which would be 2.5k.

For this reason, the resistor would be 47k or higher.

My suspicion is that the 220k/470pf parallel combination should be on the other side of the 22M feedback/220k to ground combination.

In other words, return jack to one end of the 220k/470pf. The other end of the 200k/470pf goes to the 22M, the 220k to ground and to the grid of the recovery stage. This also makes the 220k to ground make sense as it it forms a 6 dB attn with the other 220k.
paulster
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Re: Wanted: Two Rock Ruby schematic

Post by paulster »

Here's a high-res pic of Two Rock's Rocket clone which also includes their effects loop, so the schematic can be verified against that if anyone is so inclined.

http://ampgarage.com/forum/download/file.php?id=11509

Since the general consensus I'm picking up on this seems to be that it sounds pretty awful when it is engaged I'm not going to volunteer! 8)
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GatesofDawn67
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Location: Peabody, MA USA

Re: Wanted: Two Rock Ruby schematic

Post by GatesofDawn67 »

Thanks for the gut shot. I looks like the schematic is correct.

My guess is it is a copy of the Dumblator return ckt. The Dumblator and Dumblator II schemes are the same as the Two Rock's implementation.

Are the Dumblator schemes wrong (are they all based on a single reverse engineering job)?

Did HAD make a mistake? This voltage feedback circuit is the same one he uses in his preamp and he implements it correctly in the preamp.

Or was he experimenting?
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