Revox A77 pingpong tape echo with drone distortion

Rob · Last edited by Rob on Fri Aug 26, 2005 3:01 pm; edited 1 time in total

The tape echo is pretty straightforward, a little saturation and the right type of headgap and emphasis damping. AB'ing with the original goes pretty well.

The A77 had an option for a motor speed control. However, increasing or decreasing speed cannot go too fast or the tape will break. It seems 2 seconds is about the limit.

Extra is of course the possibility of a much shorter delay time on the G2 (a tape deck does have some distance between the heads).

In the feedback loop I put a filter that can be morphed between flat and bandpass with the center always at unity gain. This is optional, so when you remove it be sure to reconnect the green cables, otherwise there will be no echo repeats.

Noise is also optional, the modules can simply be deleted if not of interest.

Tape echo should have the proper type of distortion and the standard G2 distortion modules imho fail for this purpose. The proper build up of an odd harmonic series is quite crucial, so there is a little DIY odd harmonic distortion after the echo taps. Well, let your ears be the judge.

Together with the distortion this echo seems quite useful for drone.

Just posted some more explanation on the workings at:
http://electro-music.com/forum/topic-7477.html
Its in the sixth post from top.

RevoxA77EchoEFX.pch2

Description:

Model of a Revox A77 with motor speed control and used in the old fashioned pingpong echo way. Added an extra bandfilter in the feedback loop and a distortion that goes well for deeply saturated drones.

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RevoxA77EchoEFX.pch2

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gomidas · Posted: Mon Aug 15, 2005 1:21 am Post subject:

THIS IS SIMPLY BEAUTIFUL well done

I have try your reVox on many patchs (drums,bass,synth...) and I LOVE IT Very Happy

THANK YOU ROB, YOU ARE THE BEST Hail the Master

mosc · Posted: Mon Aug 15, 2005 9:27 am Post subject:

Rob.

This patch is a gold mine. Not only is the tape echo cool - very cool - but the eq, emphasis, noise, and distortion are great building blocks in themselves.

You da man... king

blue hell · Posted: Mon Aug 15, 2005 11:16 am Post subject:

And it's fun to play as well as is wioth just the variation controls.

Fozzie · Posted: Mon Aug 15, 2005 12:31 pm Post subject:

sensational, this one competes quite succesfully with my space echo for guitar echoes, it's character, versatility and adjustable (!) noiselevel are just great!

woohoo for the guru Cool

Afro88 · Posted: Mon Aug 15, 2005 4:55 pm Post subject:

nice!!!

Thanks again Rob!!

mother misty · Posted: Mon Aug 15, 2005 11:42 pm Post subject:

Haven't heard the original but this ones sounds really, really, really good!
First class!! thumb up

W.T. · Posted: Wed Aug 17, 2005 2:07 pm Post subject:

great work Laughing

cappy2112

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