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Post by gouge on Jan 1, 2017 16:35:16 GMT -6
i thought you might bring some wisdom to the table Doug.
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Post by gouge on Jan 1, 2017 4:38:25 GMT -6
what does loading the mic do to the sound? the talk online which has also been confirmed by shure is that the sm57 was designed to see a 600ohm load as that was standard gear 30 or so years ago. because a lot of modern preamps are rated around 1200-1500 ohms it means the sm57 is not being loaded to it's optimum and as such will sound harsher in the upper mids and a little thin in the bass. that is the sm57 sound to me. so using a 600 ohm impedance via a variable impedance preamp or a 1k approx resistor soldered across the xlr pins it is said will reduce the harshness and flatten out the bass. from what I've read the capsule in the sm57 is wanting 10-15 ohms and a 1:4 transformer. there are a bunch of transformers that will suit ami t58 cinemag 1057 lundahl 1636 crimson audio orange crimson audio yellow Hammond 560c however the idea is the loading will make a difference to the stock transformer so i'm starting there. I don't know what the upgrade transformers are designed for loading wise. only way to know is to try a pot and tweak away.
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Post by gouge on Dec 31, 2016 17:56:16 GMT -6
there are others with more experience than me on this so i'll just throw this out there with the understanding I am guessing.
To me there is an acoustics issue going on. Was this recorded in a vocal booth? looking at the eq graph posted above it looks like there are nulls and comb filtering at play. listening to the track it seems small and boxy.
was this tracked in a vocal booth?
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Post by gouge on Dec 31, 2016 17:46:15 GMT -6
Cheers guys.
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Post by gouge on Dec 28, 2016 4:16:49 GMT -6
Might have answered my own question. I think the vp28 already has a low input impedance.
Can anyone confirm the impedance is around 760ohms.
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Post by gouge on Dec 28, 2016 3:56:10 GMT -6
Found some spec.
In line mode the impedance is 10k.
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Post by gouge on Dec 28, 2016 3:32:32 GMT -6
So I need to get a crazy idea out of my head.
I'm looking to make a load box for my sm57. Same thing that has been written about online.
I started thinking what if I use the vp28 in line mode. Would line mode give me 600ohm impedance for the mic.
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Post by gouge on Dec 27, 2016 23:16:17 GMT -6
What makes you believe it's transformerless? Was it modded? I have one of those - the "L" stands for "Lavalier" and it has an attached cable - but the one I have is lowZ balanced (The spec sheet you linked to says 150 ohms) and I'm quite certain it has a transformer - every 545 I've ever taken apart that was stock* has had one, both HiZ and Low Z versions. I wouldn'w want to risk mine on snare drum - it's my favorite harp mic, one of the few things I still like to use mics of that lineage on. I got mine NOS in the box - didn't even have a plug on the cable yet! * - The SF Bay Area is where the idea of modding 57 style mics by pulling the transformer originated. I have read online it was transformerless and on the spec sheet it doesn't show a transformer like it does on the standard 545. Other than that I don't know. I will crack it open when I get it. I also am not sure if it is trs or Ts. Hoping trs so may need a small mod if not. Either way it was the size that caught my eye.
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Post by gouge on Dec 27, 2016 17:39:18 GMT -6
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Post by gouge on Dec 27, 2016 16:38:39 GMT -6
Devo.
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Post by gouge on Dec 26, 2016 4:04:55 GMT -6
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Post by gouge on Dec 26, 2016 4:00:27 GMT -6
bbc absorbers with perforated Masonite.
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Post by gouge on Dec 23, 2016 23:43:14 GMT -6
A lot of 'old timey' recordings sounded like the room it was recorded in, and that wasn't a bad thing to my old timey ears. If you have NO sense of the acoustic space music was recorded in, how do you establish an auditory emotional connection with the music? Well, you can, and that's what modern mix production should do. But there's no reason to think that no one today wants to hear or identify with the sound of a specific acoustic space emotionally. The problem seems to be that people are trying to use spaces that are too small. Small and live don't work. To get around the issues there becomes a need to apply layers and layers of acoustic traps that improve the sound by removing the room. It comes down to volume of the space.
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Post by gouge on Dec 23, 2016 23:35:33 GMT -6
Bought my kids a vocoloco for Xmas to use ib the family room. Fun times ahead
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Post by gouge on Dec 23, 2016 22:28:15 GMT -6
That looks like a bbc designed gobo.
I have the entire manual at home. I use it as a design guide.
Back home in a Fe days. Will upload the images.
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Post by gouge on Dec 23, 2016 19:33:38 GMT -6
Only 12 or so hours so merry Xmas to all from the land that invented chilled guiness and pavlova.
Now where is my beer. Oh that's right it's in the freezer chill in n.
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Post by gouge on Dec 23, 2016 15:41:15 GMT -6
Are you looking for a cheap solution?? Get 4 old rugs, roll them up tightly and put them along the floor/wall joints of them room. Problem solved. If you don't know the center frequency I doubt that your rug method works well. In my experience all pressure depended methods are NG for DIY. But this one works always in all rooms if money is not there.... a rolled up rug is not a pressure based trap it is a velocity based trap. the rug method works well enough, as does a couch. another method is to buy a roll of insulation and just stand it in the corner still wrapped up.
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Post by gouge on Dec 23, 2016 4:27:25 GMT -6
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Post by gouge on Dec 23, 2016 4:06:01 GMT -6
30x18x12 will allow 2 rooms.
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Post by gouge on Dec 23, 2016 4:00:17 GMT -6
2 weeks is not enough time.
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Post by gouge on Dec 23, 2016 3:48:45 GMT -6
I'm a designer in my day job so i'd start with the site and look at the location of the building. From their identify view corridors as well as opportunities and constraints.
from what you've said, i would definitely lean towards a one room setup and save some money by not having a high level of isolation. i would not bother with diagrams like the one above. i would keep it simple. a rectangle. 30x18x12.
I should say up front, i don't agree with the general philosophy online which is to build an enclosed box and fit it out with no connection to the outside world. i think that undervalues the true potential.
that said, i am more than keen to help wherever possible.
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Post by gouge on Dec 23, 2016 2:28:45 GMT -6
yeah I understand. I meant what is your current layout that you are going to fitout. or is this a new build?
you need to work up a brief first.
things like.
1. what instruments will you record 2. how many people need to fit 3. is one room ok 4. access to amenities
for mixing there is a minimum size which is around 1500cu feet. the size you are using would suit a one room setup.
the ratio of 1:2:3 is not ideal. is that flexible.
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Post by gouge on Dec 23, 2016 1:30:06 GMT -6
these are diy, they work insanely well. the battens were designed to suit the width of the trap but you could just do it random. Attachments:
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Post by gouge on Dec 23, 2016 1:26:24 GMT -6
do you have a floor plan?
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Post by gouge on Dec 23, 2016 1:21:49 GMT -6
acoustic tiles are no good.
you might try
timber slats with backing cloth/250mm pink batts/speaker cloth.
now you have a gobo with absorbing on one side and reflecting on the other.
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