emitum thin and clean power case!

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plainjanefrancis
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Re: emitum thin and clean power case!

Post by plainjanefrancis » Mon Mar 23, 2020 3:22 pm

This case looks super nice. I'm a little disappointed about the power, however. It provides the same amount of power as 1 Intellijel Palette case. If I were to move from my two palette cases to this one, I'd still be over the power limit (not including my 1U rows) Now I'm trying to figure out if I should sell some of my digital modules to make this case work... :help:

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mikmanner
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Re: emitum thin and clean power case!

Post by mikmanner » Mon Mar 23, 2020 6:51 pm

I have this case its very good. The power I was concerned about but Jason at Signal Sounds contacted the guy who makes them and was told the real upper limit is 1700 not the advertised 1200 +12 I guess maybe it's less efficient past 1200? No idea. But I have been running it at about 1500 for a couple months and it's fine still super clean.

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Re: emitum thin and clean power case!

Post by plainjanefrancis » Mon Mar 23, 2020 8:40 pm

mikmanner wrote:
Mon Mar 23, 2020 6:51 pm
I have this case its very good. The power I was concerned about but Jason at Signal Sounds contacted the guy who makes them and was told the real upper limit is 1700 not the advertised 1200 +12 I guess maybe it's less efficient past 1200? No idea. But I have been running it at about 1500 for a couple months and it's fine still super clean.
Thanks for posting this info! That's great to hear. I just placed my order, so hopefully my setup will work as well (fingers crossed).


*update, I got an email from Frank of Emitum saying that the PSU actually can handle up to 2A+12v (max) and is stable at 1.8A

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attacca
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Re: emitum thin and clean power case!

Post by attacca » Wed Jun 24, 2020 6:21 pm

I just ordered this case, I hope it works out well. I've been wanting a smaller 2x84 or 2x104 similar to intellijel but without their 1U row/IO for years!

Can someone share a use case for the Quad Balanced Outs? Any idea on the voltage input range for use with battery power?

Thanks!

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attacca
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Re: emitum thin and clean power case!

Post by attacca » Sat Jun 27, 2020 9:51 pm

DO NOT BUY THIS CASE! This is not worth $425, the materials are cheap, it is poorly though out, and poorly put together. I only paid $382 and it is still a ripoff.

The threaded inserts aren't the right pitch so I am unable to fill either the top or bottom row. I can only fill about 3/4 of the row before the holes are no longer aligned.

When I received the case the lid had slid down over the case (if modules were installed the lid would be on the knobs). The aluminum is thin and flexes a lot allowing the case to slide over its ~1.5mm lip instead of resting on it. Also, I would not trust that handle with a full case.

Almost all of the screws were loose, barely hand tight (busboard was ok). Top and bottom rails flopping freely (bottom rail upside down).

The quad balanced outs (seriously what is the point of these) do nothing but get in the way and take up precious depth. I cannot install a Mutable Links or Peaks (25mm deep) in the top left corner without the ribbon connector hitting the outs preventing the module to sit flush. You shouldn't have to worry about a 25mm deep module fitting....ever.

I don't really trust the power either, it works but I would expect it to be more precise. I get 5.261v on the 5v rail and only 11.95v on the +12v rail. I tested with and without modules installed and let it warm up for a bit. My EP-360 has 5.02v on the 5v rail even if the case is empty or full and is dead on 12v too. I don't know how sensitive modules are these days, it may be nothing.

Anyway the case is nothing but a disappointment. The quad outs should be ditched, the busboard should be either on the top or bottom, in the middle just fucks your depth on both rows. The aluminum should be a bit heavier duty or at least give the lid a platform to rest on or some reinforcement.

Save your money, the cardboard box the case comes in is stouter than the case itself.
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attacca
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Re: emitum thin and clean power case!

Post by attacca » Tue Jun 30, 2020 1:06 am

I would like to give an update.

Emitum (Frank) have been very accommodating and patient with me (I was pretty unpleasant to them in my email). I was informed there were some QC issues with an early batch and I got one that slipped through and assured the rails and power are better now.

They have offered to replace the case free of charge.

I will update again when the new one arrives.

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attacca
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Re: emitum thin and clean power case!

Post by attacca » Fri Jul 03, 2020 8:33 pm

Alternate title could be: Sán-Sán Review Pt. 2: Electric Boogaloo and it wouldn't be far off.

This is a follow up to my original review of said case.

I was sent this replacement for free directly from Emitum, they did not want the other case in return (I had already RMA'd it with PC anyway and ordered a different brand altogether from Thomann). I was pretty upset with them and imagine the free case was them trying to salvage reputation, I told them I was going to review the replacement. This case has the updated busboard design and rails. Notice the right angle keyed headers this time.

Long story short, this case is worse than the first one. Pictures and details are in the imgur gallery below (easier that way, I have a couple places to post this).



Also, as soon as I powered on the case, the busboard started emitting (Emituming) very high pitched electrical noise akin to coil whine. I made a recording as fair as I could, no fuckery. I kept the mic equal distances from myself and the busboard, I didn't mess with the gain to make it sound worse than it is. I didn't even convert the .wav to .mp3 as to be completely transparent. Have a listen:

https://u.teknik.io/mmeW6.WAV

Overall I'm pretty disappointed in the whole situation. I have much better things to do than rearrange my racks, arrange RMAs, make trips to the post office, trade countless emails, and write reviews to warn people.

I'm sure starting a competitive Eurorack company in this day and age is hard work and I applaud them for trying. But IMHO, these products are not fit for sale, especially how picky noodlers/wigglers can be.

Thanks for reading.

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Glitzerstrahl
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Re: emitum thin and clean power case!

Post by Glitzerstrahl » Tue Jul 07, 2020 3:32 am

I was just considering getting this case as I haven’t heard any negative feedback before. Just curious if others can corroborate Attaca’s experience above? Are these common problems with the Emitum cases? If so are there any other thin, light 6u 84hp cases on the market not made of wood? Been looking around but can’t find anything similar... (Don’t need the 1u row of the intellijel cases.)

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attacca
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Re: emitum thin and clean power case!

Post by attacca » Tue Jul 07, 2020 3:47 am

I was unable to install a full row of modules in the Emitum, twice. The build quality is noticeably cheap and the new/improved bus board emits loud, high pitched electrical noise.

I just received the EVZ1-84 today and it is exactly what I wanted, built like a tank, clean power, I have significantly lower noise in this case than even my EP-360 which I thought was pretty good. I am writing a full review soon.
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Glitzerstrahl
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Re: emitum thin and clean power case!

Post by Glitzerstrahl » Tue Jul 07, 2020 4:47 am

Not to go off topic and distract from Emitum’s thread but this looks really interesting. The power supply looks weak though at only +12V / 1000mA, -12V / 1000mA, +5V / 500mA... curious how much load it can actually handle?

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attacca
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Re: emitum thin and clean power case!

Post by attacca » Tue Jul 07, 2020 12:57 pm

Well I'm pretty confident you can run it at edge of the limit, probably further. I'm pushing just under 1000ma on +12v and all seems fine. For me the 500ma 5v is a non issue. The Emitum is rated at 1200/1200/1000, so not much better.

I've heard rumors that ACL are making a beefier version of the KAZU that powers this case.

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Glitzerstrahl
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Re: emitum thin and clean power case!

Post by Glitzerstrahl » Tue Jul 07, 2020 10:02 pm

attacca wrote:
Tue Jul 07, 2020 12:57 pm
Well I'm pretty confident you can run it at edge of the limit, probably further. I'm pushing just under 1000ma on +12v and all seems fine. For me the 500ma 5v is a non issue. The Emitum is rated at 1200/1200/1000, so not much better.

I've heard rumors that ACL are making a beefier version of the KAZU that powers this case.
So I hear too, apparently there is a 2A version in the works...

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Re: emitum thin and clean power case!

Post by koobraelc » Wed Jul 08, 2020 4:29 am

Thank you so much for your comments. Every piece of feedback we got is useful for us to improve our product way forward. As myself is also a picky wiggler, I definitely want to make sure of the excellent quality of the products that we ship to every single customer. That’s why I immediately shipped you another new unit after you mailed us about the issues that you came across.

Again, I am really sorry about your experiences and would like to reply to the issues that you’ve addressed in this post.

1. Screw loose and tilted top lid.
I inspected the replacement carefully before shipping out to you to make sure the quality is good. So I was surprised when I saw that the screws are loose. The only possible explanation I can think of is it’s damaged during the shipping. Currently, we use FedEx to take care of our shipments to the US and we have very limited options right now. We would be more careful about the packing and add more cushions way forward to prevent such unexpected damages to happen again.

2. Threaded inserts alignment issues.
I compared the inserts with Tiptop rails, and they are all matched. So I guess It’s not a tolerance issue. It may cause by the bent edge on the side. You may want to check the detail on Imgur.

3. The deep modules won’t fit in
Yes, it’s as shallow as it can. The key traits of this case are lightweight and portable. But definitely, there is a drawback - not all modules can fit in. The range of depth that sán-sán can accommodate is from 29mm to 42mm

4. Power issue
In the first version, the power spec was 1.2A on +/- 12v. Since we got some feedback about it, the new power spec is 1.8A on +/-12v.

Voltage normally drops when more modules are installed. To make sure the output is as close to +/-12v and 5v as possible, we added a bit margin when no modules are connected. Therefore, when plugged in more modules, the output power will be close to the rating - +/-12v, and 5v so that It won’t affect any sound or usage. Especially, most 5v usage is for MCU. Therefore, we use a little bit higher voltage for 5v.




We are still trying to find a way to completely get rid of the hiss issue you mentioned. The sound actually comes from the Murata capacitors that we use. Murata offers some explanation on it and the tricky part is that it does not happen on every piece of the products, making it even hard for us to completely solve it at the moment. As for now, however, if you install the modules on the case and cover the power bus board, the sound would be much more bearable and minimal. Also, this hiss issue doesn’t affect the output sound quality.

FYI
https://www.murata.com/en-global/produc ... ution/naki
All about Synths
https://emitum.com

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Glitzerstrahl
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Re: emitum thin and clean power case!

Post by Glitzerstrahl » Wed Jul 08, 2020 10:21 am

Fantastic response! So glad to hear that you are open to the feedback and working hard on improvements.
I live in Japan and have a few detailed questions so I will dm you separately if that’s ok. Thank you.

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attacca
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Re: emitum thin and clean power case!

Post by attacca » Wed Jul 08, 2020 1:55 pm

Thanks for your reply.

I don't know why that single busboard screw was backed out, it was the only one in this case, the rest were ok. I think the cases are getting squished in shipping, forcing the edges to overlap. I don't think you can change how your packages are handled as they are shipped around the world, best bet would be to add a stopper in each corner of the case that prevents slippage.

As far as the threaded rails go. I think you are right that the folded metal edges are causing the issue, but whatever the problem, if you get two cases and cannot fill either the top or bottom row with modules, it defeats the purpose of the case. I tried to fill them with Mutable and Erica modules and couldn't. The EVZ1 was simple and worked first try, this issue needs to be addressed for future cases.

I'm not sure about your power under load, I never got that far. I just tested the EVZ1 fully loaded at its rated limit: +11.94v, -11.97v, and 5.007v, everything within 0.5% load or not. My first case from you only had 11.95v on +12v rail, before any voltage drop. Personally I wouldn't tolerate the busboard whine even if it isn't in the audio, I use my case in mic'd environments, it has to be silent. I have a laptop that has very similar whine from its PSU and it does make into recordings (not just over the mic, high frequency ripple that is subtle but noticeable even in a DAW). It is possible to build a silent PSU/busboard design and I think that should be a priority, covering the bus board is not good enough.

Anyway, thank you again. I hope you get all the quirks ironed out!

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