A Mix of #0060 OD100WR/ #183

67plexi · Post by **67plexi** » Fri Dec 23, 2011 3:43 pm

The preamp of #0060 OD100WR and the rest is #183
It will have a single tube reverb with a ½ power switch.
I wanted to go with the 3 tube reverb but the chassis is 7” to short.
Have a combo cab for this chassis. It’s going slow………………
Soon to order a Drake 1202-32 OPT and replace the Magnetic components OPT.

Thanks to all, Steve.

67plexi · Post by **67plexi** » Fri Dec 23, 2011 4:04 pm

It's a mess now.

jelle · Post by **jelle** » Fri Dec 23, 2011 5:25 pm

Great start. One thing confuses me...183 and lnfb on v1b? Where will you put the four reverb controls that sn 60 has? Love the nos parts.

dreric · Post by **dreric** » Sat Dec 24, 2011 5:09 pm

jelle wrote:Great start. One thing confuses me...183 and lnfb on v1b? Where will you put the four reverb controls that sn 60 has? Love the nos parts.

Cool rehab of a build.

Jelle, care to elaborate on the 4 control reverb? Tone, volume, dwell...........?

Eric

jelle · Post by **jelle** » Sun Dec 25, 2011 4:27 am

Honestly...dunno 100% sure how sn 60 works. I'd love to meet that amp. But I'm sure it's an improvement over the earlier ODRS amps in terms of reverb implementation.

Jelle

Max · Post by **Max** » Mon Dec 26, 2011 5:00 pm

jelle wrote:Honestly...dunno 100% sure how sn 60 works. I'd love to meet that amp. But I'm sure it's an improvement over the earlier ODRS amps in terms of reverb implementation.

Jelle, IMO it's no "improvement" in the sense of "better", but just a different approach with advantages and disadvantages (as so often in the realm of technology):

With of course some simplification you could perhaps think of the OD sound of the older pre OD reverb topology as beeing a bit similar to a Deluxe Reverb or a Fender stand alone reverb unit in front of a Tweed Deluxe that are cranked to deliver power amp distortion harmonics and sustain. As you'll know in this configuration the reverb will get the more prominent in the texture of the clipping tone the more the tone decays, a bit similar to a ducking effect.

With the later post OD reverb topology, the spring reverb - again with some simplification - acts more or less like any other effect in the loop.

AFAIK ODR #060 doesn't have four reverb controls but the usual two (send and return), but it has two ratios (clean and overdrive). And - again with some simplification - you could perhaps think of these two ratios as acting like two seperate send controls in front of the "send" control: http://www.premierguitar.com/Magazine/I ... 100WR.aspx

Cheers,

Max

ampdork · Post by **ampdork** » Mon Dec 26, 2011 8:49 pm

I like the post preamp reverb Dumble did as a mod for a few amps. Without question it more closely follows nature.

Max · Post by **Max** » Tue Dec 27, 2011 5:15 am

ampdork wrote:I like the post preamp reverb Dumble did as a mod for a few amps.

AFAIK most of the post OD ODR amps aren't pre OD ODRS amps that have been modded but have been originally built by Alexander Dumble with the post OD topology.

ampdork wrote:Without question it more closely follows nature.

IMO most opinions can be questioned - this one beeing no exception. Or can you really name some reasons beyond any doubt why the post OD reverb of ODR #060 is more in accord with "nature" (?) than the pre OD reverb of a Jim Kelley 30/60 or FACS or a Dumble ODRS like this one: https://tubeamparchive.com/viewtopic.ph ... 952#188952 ?

Cheers,

Max

67plexi · Post by **67plexi** » Tue Dec 27, 2011 5:46 pm

Clean ratio and overdrive ratio. Let you all know how it turns out.

Steve.

ampdork · Post by **ampdork** » Tue Dec 27, 2011 7:15 pm

OK max so your saying that time based effects put before an amp has no bearing on sound. Either sounds equally "natural" to you?

Look...fine... It is only my opinion....and the opinion of every manufacturer of a time based effects and the opinion of damn near all sound engineers...

Max do you also think Stereo is natural sounding?

Max · Post by **Max** » Tue Dec 27, 2011 8:40 pm

ampdork wrote:Either sounds equally "natural" to you?

Natural: I didn't pick up the electric guitar because I'm interested in "natural" sounds. I'm a great fan of completely artificial human made music (Hendrix, Stockhausen, Zappa, Bach etc.) performed with completely artificial human made devices like violins or Steel String Singers. Of course I like the sounds of nature. But if I want to listen to the natural sound a waterfall, I would just visit the place where it is.

So IMO a pre OD reverb ODSR amp and a post OD reverb ODR amp are just two differrent musical instruments. And to say that the later ODR is "better" or an "improvement" IMO doesn't make more sense than to say that a modern trumpet is "better" than a baroque trumpet.

Stereo and High Fidelity: IMO just clever marketing ideas. IMO trying to reproduce the ambience of Covent Garden in a living room is a nonsense approach. But of course I'm aware that my opinions concerning this aren't the mainstream ones.

Cheers,

Max

boldaslove6789 · Post by **boldaslove6789** » Wed Dec 28, 2011 2:35 am

Looks great Steve! Gonna be a tight fit huh.

I hope to start stock piling parts for my 100w SSS with the 3 tube ODR Reverb, too bad ya didn't have room, I hear it kicks A$$.

67plexi · Post by **67plexi** » Wed Dec 28, 2011 4:06 pm

Greg, I don’t think the reverb can be crammed or shoe horned in this chassis.

I will have to use an outboard unit. As far as the SSS 3 tube reverb sounds interesting.

The SSS NOS parts are expensive.

Take care,Steve.

67plexi · Post by **67plexi** » Mon Jan 02, 2012 9:22 pm

Thanks’ to Robert Hinson for the ultra fast shipping.
This Drake 1202-132 clone (the black flag) OPT is larger than the PT.
Should deliver the clean head room I’m looking for.

Steve.

passfan · Post by **passfan** » Mon Jan 02, 2012 10:20 pm

A heads up on your half power switch. Toggles switch differently than sliders. If your layout diagram shows a slider and you wired a toggle the exact same way your switching and LED will be backwards.

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