-
Posts
6,405 -
Joined
-
Last visited
-
Days Won
13
Content Type
Forums
Gallery
Store
Posts posted by RadoStefanov
-
-
Pretty sure zaxcom is always 32kHz . If you use XR. But who cares?. I would not recommend using zhd for range. Just don’t make sound for children shows. Adults can not hear over 16khz anyways.
As far as noise goes I am not as concerned about it.Honestly no preamp should be noisier then the condenser mic.
even $20 once.But fast transient loud peaks are handled a lot better by 74x transmitters.
I believe the ZMT never clip is not “real” dual AD. It employs a compressor in order to work. -
-
On 1/1/2023 at 2:02 PM, ramallo said:
I feel the bag weights as much as the gear.
-
5 minutes ago, r.paterson said:
They are called *silent" series so example AO-633S here's is link. https://www.portabrace.com/product-page/ao-633s
The one above looks smaller
13 hours ago, RadoStefanov said:THis is a nice bag. Who makes it?
I take it back. It is shit.
-
38 minutes ago, r.paterson said:
The latest portabrace range.. I bought one 3
2 or 3 years ago but wasn't tight for me still in its box. Could fit rf dist in a nova etc would be better for it.
What is the exact model? Portabrace have the right idea to make bags but their execution is always poor.
-
7 hours ago, r.paterson said:
It's the portabrace light..
Is it an old one?
-
-
-
And besides: Not knowing your battery is about to die immediately disqualifies this battery.
-
19 minutes ago, Johnny Karlsson said:
Same device (SMV) : yes.
Different battery designs = same draw : no.
Read Larry's post above. the SMV design allows it to run at full power, even when the AA has only 0.9V left, but in order to compensate for the low voltage, the transmitter draws "upwards of 0.6 Amps" at that voltage. Not sure what the current draw is at a full 1.5V (Larry?). And because this lithium AA stays at a constant 1.5V until it dies.... you get it.
So it is not the battery but the transmitter design.
And in this scenario NIMH will have a better run time considering the higher mAh and the way lectrosonics draws less when voltage is lower.
You can also decrease your RF power to extend your run time. Still nothing to do with the battery.
-
5 hours ago, Johnny Karlsson said:
Haha, well good luck with that.
A milliamp hour is a milliamp hour, yes, but in a device that draws 500 milliamps vs one that draws 900 milliamps will make a difference in how long the battery will last.
In this case, we are comparing apples and oranges, because one of the batteries puts out a constant voltage until it dies, the other one gradually drops the voltage.
What I thought might make a difference is the fact that the particular device I was testing the batteries with draws more current when it sees a lower voltage.
That’s why I wanted to run the test to see what the actual real difference in runtime (if any) would be.
I am not an electrician so it’s completely possible I’m confused, but anyway, I feel that I found out what I wanted to find out, and shared it here for those who care.
To calculate the run time we are comparing the same devices at the same draw right?
-
10 hours ago, Johnny Karlsson said:
Right, but...
The theory I wanted explore was that the transmitter draws more current when the voltage is lower, and therefore would potentially drain the battery quicker.
This Lithium AA:
3300mWh @ 1.5V = 2200mAh
And NiMh:
2450mAh @ 1.2V = 2940mWh
2550mAh @ 1.2V = 3060mWh
2700mAh @ 1.2V = 3240mWh
Of course, one thing that throws the formula off is, the NiMh doesn’t start at 1.2V fresh off the charger. It can be as high as 1.47V, then drops down to around 1.35V over the first 15 min or so. Then gradually drops further. So using the above calculation formulas does not give you the accurate comparison. That’s why running the tests in real life seemed to make more sense. And again the tests I did shows that the practical run-time is about equal.
I had no idea mah means something else but milliampere hour.
sorry. Don’t mean to be an asshole.
But I think since the great senator Mike Michaels is not participating anymore I will try to put his weight and his tradition on my shoulders.
🙂 -
41 minutes ago, Johnny Karlsson said:
In theory, yes - but depends on which theory. Since the current draw is higher at 1.2V that it is at 1.5V. That’s what got me curious and made me want to test these to see what it meant in practice. And that does seem to even things out in terms of runtime.
But no, I’m not planning to switch over to these.
Now, if anyone could make a safe AA rechargeable that could run a DBSM for 6h30min, THAT would make me switch! (Not expecting that happening any time
soon).
At the same draw mAh power is mAh power. It should be… “ to be clear” IT IS less than eneloop pro 2550-2600 mAh
-
9 hours ago, Johnny Karlsson said:
4:34 with the fresh eneloop pro at 50mw, so pretty much same.
In theory you should be able to do better with Eneloop pro.
13 hours ago, Johnny Karlsson said:One advantage over NIMH is that these are lighter weight.
The main advantage of NIMH is the predictability of run time based on the drain.
the main reason “ apart from cost” I try to use NIMH on everything.
I have zero interest in the current lithium rechargeable technologies.
Sometimes there is no need to reinvent the wheel. -
RIP Don,
Anybody knows how to open the female XLR on top of the cable? Mine finally died.
-
11 minutes ago, GAGaudio said:
Anyone try this mount? Looking for a good DPA 4017c hard mount that can support a softie. Can't find many options.
Of course i would prefer a E-OSIX but they only have it for indoor (soft).
don’t waist your time with a softie. Especially the Rycote softie.
Get a Cinela COSI. You are going to use it a lot more than anything else.
-
2 minutes ago, MartinTheMixer said:
Not sure what your question is.
Not sure what your answer is.
you are buying ipowers sales men Mumbai jumbo.
How long a battery stays over 15V “thanks for clarifying” should have no affect on a properly designed equipment using an officially standardized battery. Unless the manufacturer don’t know how to make a battery power device. -
Just now, MartinTheMixer said:If you were to measure these 2 different types of cells at 1.5 volts or higher, which cell would provide a longer run time at or above 1.5 volts? There is the answer.
Huh?
what?
what are you trying to say?
-
1 hour ago, MartinTheMixer said:
You asked "where do I get this?" and then talk about one being "better". I didn't say one was better or worse because of this, I made the statement that the cells at discussion here would be at 1.5 volts longer than Energizer lithium, and since a depleted Energizer Lithium has 1.5 volts for less time than the battery than the ones in this discussion, that is where I "get this".
And as I said even their own specs are exactly as I stated.
Again “but maybe a little clearer”:how do you get to the conclusion that this battery will run longer than energizer lithium?
who cares about the discharge rate?
You should be clearer about your statement.
1 hour ago, RadoStefanov said:Well, if it helps, the batteries we are discussing here have 1.5 volts for a longer period of time than Energizer lithium. Il
Sincerely, Martin
It seam like you are saying that the 1.5V for a longer period “life “.
Nobody cares about 1,5V. If your wireless performs differently lower than 1.5 the battery is the least of your problems. -
3 hours ago, MartinTheMixer said:
Well, if it helps, the batteries we are discussing here have 1.5 volts for a longer period of time than Energizer lithium. Il
Sincerely, Martin
not even close. Where do you get this? Those are maybe a little bit better than 2500mAh eneloops and 2700mAh powerexs “by their data”. But I don’t trust manufacturers claims very often.3 hours ago, Ontariosound said:I gave up on rechargeable AA's many years ago. In my Lectro SM's they would level out at 1.2 volts and always have me
concerned with that number when viewing on the 411A's. And they are heavy. Similar issue in my TS3 EL slates, the
apparent cruising altitude voltage of 1.2 was tricky. And they seemed to swell up in the tight sled and tunnel.
I did like them in my Zaxcom RX 200's, long life. But heavy as a tank and that quick jump from 6 volts to 5ish was irritating ( 4 AA's).
So I just use Energizer Ultimate Lithiums. When the voltage starts to drop and drop, time to replace. They have gone
up in price but the light weight and predictability is comforting. Granted, Documentary is my main focus. If I stuck with scripted Union shows a charging station and a Boom Op and Utility would make it more environmentally friendly.
I use eneloop Pro 90%
they are a money maker and keep zaxcom transmitters a lot cooler.
Also I 100% prefer the expectability and consultancy of NIMH compared to the the opposite in lithiums. -
14 minutes ago, IronFilm said:
@JonneWilkinson, are you using the Sony DWA-01D to power your receivers and get the audio out of them into your Sound Devices recorder?
Has anything simpler/lighter/cheaper/smaller than the Sony DWA-01D ever came out instead for powering SONY DWR receivers? (by Sony, or anybody else?)
Have you ever come across any issues mixing digital Sony wireless together other wireless on set? (Shure/Lectrosonics/Wisycom/Zax/etc) So long as they're properly frequency coordinated they don't interfere with each other?If you have only receivers in the bag it should not matter that much.
-
I love the Italian Restaurant Menu design of the brochure. 🙂
-
I hope to see you all there.
-
2 hours ago, Andrew From Deity said:
I'd be down for either night
Monday 25th
9PM
Help with understanding Zaxcom ZHD wireless system
in Equipment
Posted
Not how it works. The hardware has to match 32bit which is pretty much impossible.
about the 32bit: might be an advertising gimmick. 136dB dynamic range can be easily send over 24bit. And I doubt the 136dB is a realistic number. There is for sure an expander implemented.
32 bit over digital wireless sounds like insane amount of data even with the compression.