MicMix MasterRoom XL-305 Spring Reverb Clone

Where we discuss new analog design ideas for Pro Audio and modern spins on vintage ones.
jlm
Posts: 7
Joined: Fri Feb 08, 2008 3:43 am

Re: MicMix MasterRoom Spring Reverb Project

Post by jlm » Thu Dec 18, 2008 12:58 pm

After the first two or so the tension isn't as tight. The tension however doesn't effect the delay of the line, the number of turns does since it's torsional. In that sense it's not like a musical instrument string.
Thanks for all your answers; I was more concerned about any physical damage that could be done to the transducer because of the increased tension, not the sonic aspects.

User avatar
mediatechnology
Posts: 3849
Joined: Sat Aug 11, 2007 2:34 pm
Location: Oak Cliff, Texas
Contact:

Re: MicMix MasterRoom Spring Reverb Project

Post by mediatechnology » Thu Dec 18, 2008 1:09 pm

We used the 13.5 ms line in the XL-305 on that same sled. The transducer that the spring hooks on to is a piece of wire soldered into a brass tube. It has quite a bit of pull strength.
https://ka-electronics.com

Project Veritas: Google "Machine Learning Fairness" Whistleblower Goes Public, says: "burden lifted off of my soul." https://www.youtube.com/watch?v=g1VeElB ... e=youtu.be
If banned by YouTube: https://www.bitchute.com/video/g1VeElBAeas/
Epstein's Death May Be A "Turning Point In The Public's Willingness To Accept Official Bullshit." https://www.zerohedge.com/news/2019-08- ... l-bullshit

emrr
Posts: 518
Joined: Sun Mar 02, 2008 11:27 pm
Location: NC, USA
Contact:

Re: MicMix MasterRoom Spring Reverb Project

Post by emrr » Thu Dec 18, 2008 4:57 pm

I am recalling a lightbulb shunt limiter on the dedicated reverb amp/speaker combo in my Hammond M102 organ. I assume that's to address the boioioioioinnnggg.
Best,

Doug Williams
Electromagnetic Radiation Recorders

User avatar
mediatechnology
Posts: 3849
Joined: Sat Aug 11, 2007 2:34 pm
Location: Oak Cliff, Texas
Contact:

Re: MicMix MasterRoom Spring Reverb Project

Post by mediatechnology » Thu Dec 18, 2008 6:19 pm

I think it could be for boing. IIRC Orban used a limiter in their unit.

The shunt limiter is in the drive side or receive?
https://ka-electronics.com

Project Veritas: Google "Machine Learning Fairness" Whistleblower Goes Public, says: "burden lifted off of my soul." https://www.youtube.com/watch?v=g1VeElB ... e=youtu.be
If banned by YouTube: https://www.bitchute.com/video/g1VeElBAeas/
Epstein's Death May Be A "Turning Point In The Public's Willingness To Accept Official Bullshit." https://www.zerohedge.com/news/2019-08- ... l-bullshit

jlm
Posts: 7
Joined: Fri Feb 08, 2008 3:43 am

Re: MicMix MasterRoom Spring Reverb Project

Post by jlm » Fri Dec 19, 2008 11:08 am

emrr wrote:I am recalling a lightbulb shunt limiter on the dedicated reverb amp/speaker combo in my Hammond M102 organ. I assume that's to address the boioioioioinnnggg.
It's definitely for the protection of the reverb drive transducer, according to the note on the schematic: These lamps are used as volume limiters, not for illumination! :)

emrr
Posts: 518
Joined: Sun Mar 02, 2008 11:27 pm
Location: NC, USA
Contact:

Re: MicMix MasterRoom Spring Reverb Project

Post by emrr » Fri Dec 19, 2008 11:12 am

beat me to it; thanks
Best,

Doug Williams
Electromagnetic Radiation Recorders

User avatar
mediatechnology
Posts: 3849
Joined: Sat Aug 11, 2007 2:34 pm
Location: Oak Cliff, Texas
Contact:

Re: MicMix MasterRoom Spring Reverb Project

Post by mediatechnology » Fri Dec 19, 2008 11:13 am

So the lamp is a transducer burnout protector rather than de-boing device.

EDIT: Listening to some of the heavily distorted Perez Perado tracks from the 50's and 60's I can see why they added the lamp.
https://ka-electronics.com

Project Veritas: Google "Machine Learning Fairness" Whistleblower Goes Public, says: "burden lifted off of my soul." https://www.youtube.com/watch?v=g1VeElB ... e=youtu.be
If banned by YouTube: https://www.bitchute.com/video/g1VeElBAeas/
Epstein's Death May Be A "Turning Point In The Public's Willingness To Accept Official Bullshit." https://www.zerohedge.com/news/2019-08- ... l-bullshit

emrr
Posts: 518
Joined: Sun Mar 02, 2008 11:27 pm
Location: NC, USA
Contact:

Re: MicMix MasterRoom Spring Reverb Project

Post by emrr » Sat Dec 20, 2008 11:34 am

it does seem to be very smooth, so some de-boing happens.
Best,

Doug Williams
Electromagnetic Radiation Recorders

jlm
Posts: 7
Joined: Fri Feb 08, 2008 3:43 am

Re: MicMix MasterRoom Spring Reverb Project

Post by jlm » Mon Dec 22, 2008 6:03 am

The Orban reverb was one of the nicest sounding units using "Hammond" springs. It used a "floating threshold detector" that seemed to do a good job.
There's also one unit I'm very curious about: Fairchild had a chunky beast with springs; I remember, there was one at Studios Barclay when I worked there in the 70's -it was decommissioned at the time. I have found only minimal litt about it, no schemos. Maybe it didn't sound that good...

emrr
Posts: 518
Joined: Sun Mar 02, 2008 11:27 pm
Location: NC, USA
Contact:

Re: MicMix MasterRoom Spring Reverb Project

Post by emrr » Mon Dec 22, 2008 9:11 am

I've not heard one to comment. 3 tanks I think. Uses the Fairchild SS 600 series mic preamp modules for pickup; maybe for drive too. Have to look at some pics I've saved to remember.
Best,

Doug Williams
Electromagnetic Radiation Recorders

Post Reply