Become a Site Supporter and Never see Ads again!

Author Topic: Beyer MV100 mods  (Read 5384 times)

0 Members and 1 Guest are viewing this topic.

Online jbell

  • TDS
  • Trade Count: (143)
  • Needs to get out more...
  • *****
  • Posts: 4167
  • Gender: Male
  • Spreadicated
Beyer MV100 mods
« on: February 20, 2011, 04:48:46 PM »
Can the mv100 be modded to have gain knobs instead of the stepped gain switch?  I have seen some old posts on changing out chips, but haven't seen if anyone has added gain knobs.
Microtech Gefell M20's> Nbob KCY> Naiant PFA(60v) > Sound Devices Mixpre-6 @24/48

-22        -12         -6        TDS     
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][}   
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][} 
__________________________
|Record|  Runtime: 4:19.99  {|||] 75%

Offline TNJazz

  • Ninja
  • Trade Count: (44)
  • Needs to get out more...
  • *****
  • Posts: 5537
  • Gender: Male
  • "Those who know, know."
    • NINJA DYNAMITE
Re: Beyer MV100 mods
« Reply #1 on: February 21, 2011, 03:46:23 PM »
I believe Chris Church did this to one (or maybe something like it) but doing that on this preamp far exceeds the point of diminishing returns in my opinion.  Why bother modding it if it's not going to make a significant improvement in the sonic quality?

EDITED TO ADD:  You already have an MP-2 in your sig, and that preamp is a much better one than the beyer.  Just my opinion, and as always YMMV
« Last Edit: February 21, 2011, 04:05:15 PM by TNJazz »
Check out my band!  --> http://www.ninjadynamite.com

Offline Church-Audio

  • Trade Count: (44)
  • Needs to get out more...
  • *****
  • Posts: 7573
  • Gender: Male
Re: Beyer MV100 mods
« Reply #2 on: February 21, 2011, 10:57:43 PM »
Can the mv100 be modded to have gain knobs instead of the stepped gain switch?  I have seen some old posts on changing out chips, but haven't seen if anyone has added gain knobs.

Yes it can between the max and minimum settings. Resistors and a rotary switch are all that is needed. Simple mod.. Again you cant turn a turd into a steak but you might be able to turn it into a hotdog.

Chris
for warranty returns email me at
EMAIL Sales@church-audio.com

Offline TNJazz

  • Ninja
  • Trade Count: (44)
  • Needs to get out more...
  • *****
  • Posts: 5537
  • Gender: Male
  • "Those who know, know."
    • NINJA DYNAMITE
Re: Beyer MV100 mods
« Reply #3 on: February 23, 2011, 09:31:08 AM »
you cant turn a turd into a steak but you might be able to turn it into a hotdog.

Where's that "Instant Classic" image?   ;D
Check out my band!  --> http://www.ninjadynamite.com

Offline page

  • Trade Count: (25)
  • Needs to get out more...
  • *****
  • Posts: 8392
  • Gender: Male
  • #TeamRetired
Re: Beyer MV100 mods
« Reply #4 on: February 23, 2011, 09:50:49 AM »
you cant turn a turd into a steak but you might be able to turn it into a hotdog.

Where's that "Instant Classic" image?   ;D

This is the third time in as many weeks we've had to look for it, I'm hunting it down and creating a thread just for it when I get a chance.
"This is a common practice we have on the bus; debating facts that we could easily find through printed material. It's like, how far is it today? I think it's four hours, and someone else comes in at 11 hours, and well, then we'll... just... talk about it..." - Jeb Puryear

"Nostalgia ain't what it used to be." - Jim Williams

Online jbell

  • TDS
  • Trade Count: (143)
  • Needs to get out more...
  • *****
  • Posts: 4167
  • Gender: Male
  • Spreadicated
Re: Beyer MV100 mods
« Reply #5 on: February 23, 2011, 10:12:12 AM »
  ???

Can the mv100 be modded to have gain knobs instead of the stepped gain switch?  I have seen some old posts on changing out chips, but haven't seen if anyone has added gain knobs.

Yes it can between the max and minimum settings. Resistors and a rotary switch are all that is needed. Simple mod.. Again you cant turn a turd into a steak but you might be able to turn it into a hotdog.

Chris
« Last Edit: February 23, 2011, 06:19:57 PM by jmbell »
Microtech Gefell M20's> Nbob KCY> Naiant PFA(60v) > Sound Devices Mixpre-6 @24/48

-22        -12         -6        TDS     
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][}   
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][} 
__________________________
|Record|  Runtime: 4:19.99  {|||] 75%

Offline hi and lo

  • Trade Count: (38)
  • Needs to get out more...
  • *****
  • Posts: 2314
Re: Beyer MV100 mods
« Reply #6 on: February 23, 2011, 10:22:31 AM »
ruh roh.

On a lighter note.. I vaguely recall from my dat-head days that someone was modding the mv100 unit to prevent preamp overload. I'd like to see the guts of this unit. I'm sure there's room for improvement and switching out a few caps and resistors might go a long ways to improve a modest unit.

Offline flipp

  • resident curmudgeon
  • Trade Count: (17)
  • Needs to get out more...
  • *****
  • Posts: 4308
Re: Beyer MV100 mods
« Reply #7 on: February 23, 2011, 10:23:57 AM »
version 2 and 3

Offline Todd R

  • Over/Under on next gear purchase: 2 months
  • Trade Count: (29)
  • Needs to get out more...
  • *****
  • Posts: 4889
  • Gender: Male
Re: Beyer MV100 mods
« Reply #8 on: February 23, 2011, 11:10:46 AM »
ruh roh.

On a lighter note.. I vaguely recall from my dat-head days that someone was modding the mv100 unit to prevent preamp overload. I'd like to see the guts of this unit. I'm sure there's room for improvement and switching out a few caps and resistors might go a long ways to improve a modest unit.

I modded the gain on my mv100 when I had it (about 10 years ago I think?).  IIRC, I re-did the gain so it was something like 12-18-28 rather than 20-40-60.  The mv100 can take a pretty hot mic signal, but it has a relatively low max output voltage.  So it can easily overload on the outputs when you're recording a PA-driven concert (ie, a loud source).

I found that set at 20db gain (it's lowest setting), it would often distort due to overloading the outputs when I was running neumann km184's -- which are pretty typical output for condensors, something like 15mv/Pa. 

Unless you mod the gain structure, if you're using an mv100 for concert recording, I'd recommend using the -10db attenuators on your mics (which km184's don't have), or using attenuator cables.
Mics: Microtech Gefell m20/m21 (nbob/pfa actives), Line Audio CM3, Church CA-11 cards
Preamp:  none <sniff>
Recorders:  Sound Devices MixPre-6, Sony PCM-M10, Zoom H4nPro

Offline page

  • Trade Count: (25)
  • Needs to get out more...
  • *****
  • Posts: 8392
  • Gender: Male
  • #TeamRetired
Re: Beyer MV100 mods
« Reply #9 on: February 23, 2011, 11:29:41 AM »
version 2 and 3

got the pirate one? I do loves me the pirate classic pic. It always seemed emblematic of our attitude.  ;D

ruh roh.

On a lighter note.. I vaguely recall from my dat-head days that someone was modding the mv100 unit to prevent preamp overload. I'd like to see the guts of this unit. I'm sure there's room for improvement and switching out a few caps and resistors might go a long ways to improve a modest unit.

I modded the gain on my mv100 when I had it (about 10 years ago I think?).  IIRC, I re-did the gain so it was something like 12-18-28 rather than 20-40-60.  The mv100 can take a pretty hot mic signal, but it has a relatively low max output voltage.  So it can easily overload on the outputs when you're recording a PA-driven concert (ie, a loud source).

What *is* the max output dbu anyway? I mean, it looks like a sax but it's not based on what's inside.
"This is a common practice we have on the bus; debating facts that we could easily find through printed material. It's like, how far is it today? I think it's four hours, and someone else comes in at 11 hours, and well, then we'll... just... talk about it..." - Jeb Puryear

"Nostalgia ain't what it used to be." - Jim Williams

Offline flipp

  • resident curmudgeon
  • Trade Count: (17)
  • Needs to get out more...
  • *****
  • Posts: 4308
Re: Beyer MV100 mods
« Reply #10 on: February 23, 2011, 11:34:04 AM »
version 2 and 3

got the pirate one? I do loves me the pirate classic pic. It always seemed emblematic of our attitude.  ;D


I don't think so, at least my search terms didn't find it on my HD.  :-[

Offline Todd R

  • Over/Under on next gear purchase: 2 months
  • Trade Count: (29)
  • Needs to get out more...
  • *****
  • Posts: 4889
  • Gender: Male
Re: Beyer MV100 mods
« Reply #11 on: February 23, 2011, 01:40:58 PM »

What *is* the max output dbu anyway? I mean, it looks like a sax but it's not based on what's inside.

Interesting.  The manual for the mv100 is available in the ts.com archive section, and it states a max output of 15dbu.  With condensors like the km184's and a minumum 20db gain setting, that implies it won't overload until about a 125db SPL.  That does seem like the mv100 may not have been the culprit in the overloading I used to experience.  I thought I investigated it way back when and determined it was the mv100 overloading, not that it overloaded the inputs to my recorder (an Aiwa HD-X3000 back then, same as the HHB1 or Marantz PMD700).

At any rate, fixing the gain structure on my mv100 fixed the problem.
Mics: Microtech Gefell m20/m21 (nbob/pfa actives), Line Audio CM3, Church CA-11 cards
Preamp:  none <sniff>
Recorders:  Sound Devices MixPre-6, Sony PCM-M10, Zoom H4nPro

Offline Tim

  • Trade Count: (1)
  • Needs to get out more...
  • *****
  • Posts: 32925
  • Gender: Male
Re: Beyer MV100 mods
« Reply #12 on: February 23, 2011, 03:04:22 PM »
Todd, I and some friends had similar issues with the mv100 in the chain with km140s and an ad500e/1k
I’ve had a few weird experiences and a few close brushes with total weirdness of one sort or another, but nothing that’s really freaked me out or made me feel too awful about it. - Jerry Garcia

Online jbell

  • TDS
  • Trade Count: (143)
  • Needs to get out more...
  • *****
  • Posts: 4167
  • Gender: Male
  • Spreadicated
Re: Beyer MV100 mods
« Reply #13 on: February 23, 2011, 04:57:23 PM »
 :yahoo:
« Last Edit: February 23, 2011, 06:21:26 PM by jmbell »
Microtech Gefell M20's> Nbob KCY> Naiant PFA(60v) > Sound Devices Mixpre-6 @24/48

-22        -12         -6        TDS     
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][}   
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][} 
__________________________
|Record|  Runtime: 4:19.99  {|||] 75%

Offline Todd R

  • Over/Under on next gear purchase: 2 months
  • Trade Count: (29)
  • Needs to get out more...
  • *****
  • Posts: 4889
  • Gender: Male
Re: Beyer MV100 mods
« Reply #14 on: February 23, 2011, 05:06:53 PM »
Todd, I and some friends had similar issues with the mv100 in the chain with km140s and an ad500e/1k

Good point Tim, I forgot I was sometimes running the mv100 directly into DAT and sometimes was running into my Apogee AD500e.
Mics: Microtech Gefell m20/m21 (nbob/pfa actives), Line Audio CM3, Church CA-11 cards
Preamp:  none <sniff>
Recorders:  Sound Devices MixPre-6, Sony PCM-M10, Zoom H4nPro

 

RSS | Mobile
Page created in 0.122 seconds with 56 queries.
© 2002-2020 Taperssection.com
Powered by SMF