Chord Mojo 2 Thread ___ [product released January 31, 2022 -- starting on page 95 of thread]

[jarnopp]

I sold my Mojo 1 the minute I heard Mojo 2.

I love Mojo 2; will never sell Mojo 1!

 

[chaotic_angel]

So this came at dinner time, nevermind the snack photo bomb

 

[Nostoi]

I love Mojo 2; will never sell Mojo 1!

They compliment each other well, for sure.

 

[chaotic_angel]

Helo, I am charging using 2.5 A adapter, Blue on menu is ON. Now the led charging shows Green. While mojo 2 is now getting very warm, is it normal?

 

[dsrk]

Helo, I am charging using 2.5 A adapter, Blue on menu is ON. Now the led charging shows Green. While mojo 2 is now getting very warm, is it normal?

Yes it's normal it does get hot.
Green means it's charging from 60-80%. Blue is 80-100%.
Menu - Blue is some what fast and White is max fast charging. Green is slow charging.

 

[Alenotta]

Oh I see, so the usb cable is what’s causing the white noise (pops) i guess?

I like poly too, but majority of the music i listen to is via Apple Music, so still need to stay connected to my main sources (iPhone, iPad, MacBook).

Great solution for people that buy music though…

I did try a OTG cable for my iPhone from amazon that made some loud noises when it wiggled. I thought was the cable so I sent that back and got the official apple one which seems fine. I haven't had any white noise pops listening to Tidal via USB C to the Mojo 2. Fingers crossed it stays that way.

 

[chaotic_angel]

Occasional and intermittent crackling popping noise, android cellphone UAPP
STILL EXISTS!!
My usb C to C is 30cm already ..

 

[subwoof3r]

mojo 2 is now getting very warm

Personally, since I use my Mojo 2 as a desktop solution only, I bought this cheap 120mm (but quiet) fan at amazon.
Mine is 24/7 fresh.
Even if we say that M2 can handle such warm, its always better and safe for all components inside it

 

[headmanPL]

Personally, since I use my Mojo 2 as a desktop solution only, I bought this cheap 120mm (but quiet) fan at amazon.
Mine is 24/7 fresh.
Even if we say that M2 can handle such warm, its always better and safe for all components inside it

Mojo2 doesn't get anywhere near as warm as Mojo1 could. A tip for Mojo1 (which also works for Mojo2), was to stand it up so that it is stood on the thin end where the Chord logo is engraved and the LED orbs are the topside. It really worked, especially when charging and listening. Mojo2 runs a lot cooler, but it's how I stand it if I am charging and listening. I bought the Mojo1 in December 2015. It still gives 6 hours listening time on the original battery, so I think this helps.

 

[dsrk]

Personally, since I use my Mojo 2 as a desktop solution only, I bought this cheap 120mm (but quiet) fan at amazon.
Mine is 24/7 fresh.
Even if we say that M2 can handle such warm, its always better and safe for all components inside it

I use similar setup to cool down Mojo 2 especially when I am charging and listening to it.
I actually bought the fan for Topping A30 Pro which really gets hot, Mojo 2 doesn't nearly get as hot. But it does get hot when charging and using it at the same time.

 

[Kentajalli]

I use similar setup to cool down Mojo 2 especially when I am charging and listening to it.
I actually bought the fan for Topping A30 Pro which really gets hot, Mojo 2 doesn't nearly get as hot. But it does get hot when charging and using it at the same time.

I like that! very impractical for mobile use, but I like that.
This should now be obvious that an outer case for a device that gets warm, is not a good idea.
On Mojo Classic, I traced the source of the heat to the charge-pump circuit (circuit under side, an inductor and accompanying components). The battery never got warm by itself.
Chord has decided not to bind this section thermally to the outer case, in an attempt to keep the case cool. they have attached the battery to the upper shell (the coolest part) to save the battery.
With all due respect to Chord, I don't think it works as intended in practice.
Since the device sits on its rubber legs, all the heat from the charge circuit rises, and the heat from the FPGA and the input chip will add to it, to finally hit the underside of the battery.
The little foam insulation pad they use on the underside of the battery, only helps with hotspots, but heat will ultimately get to the battery.
I thought of a different a way!
I used a simple heat transfer pad attached to the bottom shell, and thermally did bind the charge circuit to the bottom shell!
Now, Mojo2's case is not as well-made as Mojo1, so the top shell does not make perfect contact with the bottom shell, which is good for my purpose.
The heat from the charge circuit gets transferred quickly to the bottom shell and starts to dissipate out because of its large size and mass, all the while, the top shell is somewhat insulated from the bottom shell (because it does not make full contact with it).
In practice, while charging and specially charging and listening, the bottom shell gets hotter than before (as expected and intended), but after thermal equilibrium sets in, the top shell (the important section) remains cooler than before. I argue that the faster heat dissipation of the bottom shell saves the battery, which is attached to the top shell.
Bottom line, at least don't suffocate it in a leather case. Turn it upside down, or on its side in use (to keep the battery cool) or do the simple Mod. if you like.

 

[Edyeded86]

Has anyone tested different connection cables between mojo 2 and source to see if it make a difference in SQ?

I tried using my Fiio (usb c to lightening) OTG cable from mojo to iPhone, but found that the usb micro and apple adapter produces a better sound quality? Has anyone else tried any other variations to iPhone?

 

[headfry]

Has anyone tested different connection cables between mojo 2 and source to see if it make a difference in SQ?

I tried using my Fiio (usb c to lightening) OTG cable from mojo to iPhone, but found that the usb micro and apple adapter produces a better sound quality? Has anyone else tried any other variations to iPhone?

Absolutely big improvements can be had, but there are those that claim that since it's "digital" any properly designed USB cable will sound the same (the signal is actually analogue carrying a digital signal and is susceptible to noise and other detriments). If you're curious, try a cable upgrade - they're not all expensive - and return it if it doesn't make enough of a difference. I don't use an iPhone but use an iPad Pro and going from the stock generic cable to the Curious Hugo Link with Audioquest Jitterbug made my Mojo's sound go from that of a cheaper DAC (e.g. Dragonfly Red) to a high end DAC and I've been happy with it since, now with M2.

Here's a good video on the topic:

For those that don't believe there are sound quality differences that's fine - I'm not challenging your findings, I'm reporting what I'm experiencing.

 

[Kentajalli]

Absolutely big improvements can be had, but there are those that claim that since it's "digital" any properly designed USB cable will sound the same

Please include me and Rob Watts to those.

(the signal is actually analogue carrying a digital signal and is susceptible to noise and other detriments).

Mind boggles!

 

[paulrbarnard]

Please include me and Rob Watts to those.

Mind boggles!

+1.
There are significant differences between cables for mobile use, but that is related to length, connectors and aesthetics. The first two of those can have an impact on sound from a reliability perspective but not from a quality perspective, assuming the conductors are not made of damp string. The third factor can certainly have an substantial influence subjectively.

My considerations for a cable for a portable device is; short, right angle connectors and solid connection. I use a DDHIFI cable which was overly expensive for what it is but very capably fulfills my primary requirements.