[Arpiben]

PC speakers.

Hi Paulus,
After a not so easy search, it appears that your speakers have an input impedance of 4 Ohms. This is quite low and therefore it draws maximum current from Mojo. I understand now why your item is getting warm.
Cheers.

 

[Paulus XII]

Hi Paulus,
After a not so easy search, it appears that your speakers have an input impedance of 4 Ohms. This is quite low and therefore it draws maximum current from Mojo. I understand now why your item is getting warm.
Cheers.

 
Hi Arpiben,
 
Will this be unhealthy for Mojo? What do you think?

 

[Arpiben]

Hi Arpiben,

Will this be unhealthy for Mojo? What do you think?

Don't know. I forgot by I think Mojo is specified from 8 Ohms upwards.
In order to limit current you may set maximum volume/gain with your loudspeaker and therefore reduce output voltage from Mojo.
Rgds

 

[AudioBear]

yes, 4 Ohms would draw a lot of power.  Mojo delivers something like 700+ mW into 8 Ohms and is approved for 4 Ohm headphones so Mojo can take the load but it will dissipate a lot of power driving speakers.  I doubt it was designed with driving speakers as a normal use.  Maybe @Rob Watts will comment.

 

[pr0b3r]

   
 
 
I strongly suspect the AK70 is aimed at cashing-in on owners of a particular DAC-Amp, due to it's success, and the fact that it sounds easily as good as, and arguably better than, the TOTL AK DAP. If they can't beat the SQ of a $599 DAC-Amp + $100 smartphone, with a $3,500 DAP, then they may as well try to grab a piece of the action by creating a relatively-affordable partner for it, which (by a hilariously-absurd 'coincidence'

is priced at exactly the same $599 as that DAC-Amp). iRiver also know that the discontinued AK100 has popularly been stacked with said DAC-Amp, by many audiophiles.
 
 
I have no objection to AK producing a (relatively) sensibly priced DAP that will feed Mojo nicely. I just find it quite laughable that they're being so obvious about it, without openly saying it.
 
Possible proof (not that it was needed) that Mojo took a big bite out of somebody's overpriced pie...
 
.

That's also the first thing that came to my mind when I saw the specs of that AK70. Haha! I'm still not that much of a fan of the analytical sound of AK DAPs, but the features are promising on this one. Might be a real game changer. Also, maybe it's just me, but I feel like AK is just like the Apple brand of high end audio devices. JMO. 

 

[Rob Watts]

  yes, 4 Ohms would draw a lot of power.  Mojo delivers something like 700+ mW into 8 Ohms and is approved for 4 Ohm headphones so Mojo can take the load but it will dissipate a lot of power driving speakers.  I doubt it was designed with driving speakers as a normal use.  Maybe @Rob Watts will comment.

Assuming I understand correctly, Paulus stated that the Logitech Z623 is powered, so that Mojo will just see a very easy power amp input load. No need to worry about the actual impedance of the loudspeaker's 4 ohms.
 
Yes Mojo will go down to 4 ohms, but certainly not speakers. It will drive 8 or 16 ohm efficient horns though.
 
Rob

 

[Rowethren]

Just reporting back, after 2 days of commuting to London with my Mojo in the new official case it has not shutdown once. The external of the case gets slightly warm but nothing to worry about. Not bad considering it has been around 24 degrees in London (not that hot for a lot of you guys but in the UK that is pretty warm).

 

[jadeboy]

 
Hi @jadeboy,
 
I have been using both Lync & now Skype for Business without encoutering the issues you related ( Win7). I suggest you to have a look at your audio device settings in Skype. In my case, by default it is set to computer audio driver and not  Chord or Asio.
If Mojo is switched off or its USB data is unplugged, and you have selected Asio or Chord driver it is normal that applications may scratch since they can not establish any comunication with the DAC. As for instance, when trying to play Foobar without Mojo/USB plugged.
Good luck in solving the issue.
Rgds

 
I have tired everything I can think of.. the audio device in Skype is setup for a different audio output.. it does really matter what is setup in Skype for Business/Lync.. once the Chord Device is enable in the sound control panel, Lync will crash right away (disable Chord Device/and all other sound devices, launch Lync - no problem - enable Chord Device - Lync crashes right away).

 

[Slaphead]

Just reporting back, after 2 days of commuting to London with my Mojo in the new official case it has not shutdown once. The external of the case gets slightly warm but nothing to worry about. Not bad considering it has been around 24 degrees in London (not that hot for a lot of you guys but in the UK that is pretty warm).

A couple more days of that and you'll be getting a hosepipe ban over there in the UK

I use my Mojo as a desktop DAC/Amp, which means I almost always have it charging at the same time, and only just gets slightly warm to the touch.

 

[Rowethren]

A couple more days of that and you'll be getting a hosepipe ban over there in the UK

I use my Mojo as a desktop DAC/Amp, which means I almost always have it charging at the same time, and only just gets slightly warm to the touch.

Well the Mojo does get hotter than slightly warm but not too bad, I was saying the outside of the case doesn't get too warm. Either way no where near the shutoff temperature.

Thankfully we should be safe from a hose pipe ban seeing as it has been a typical Summer and raining most days! :rolleyes:

 

[Paulus XII]

Don't know. I forgot by I think Mojo is specified from 8 Ohms upwards.
In order to limit current you may set maximum volume/gain with your loudspeaker and therefore reduce output voltage from Mojo.
Rgds

 
Just did that and all's fine with temperatures.

 

[Mython]

 

Just reporting back, after 2 days of commuting to London with my Mojo in the new official case it has not shutdown once. The external of the case gets slightly warm but nothing to worry about. Not bad considering it has been around 24 degrees in London (not that hot for a lot of you guys but in the UK that is pretty warm).

A couple more days of that and you'll be getting a hosepipe ban over there in the UK

I use my Mojo as a desktop DAC/Amp, which means I almost always have it charging at the same time, and only just gets slightly warm to the touch.

 
Hey, not all of us live in the rarefied air (and with an endless mountain stream of water) on a personal Alp - the only Alps us Brits have is a potentiometer or two!
 
 
Oh well... at least we can mow the lawn, on a Sunday, even if we're banned from watering it...

 

 

[Slaphead]

Hey, not all of us live in the rarefied air (and with an endless mountain stream of water) on a personal Alp - the only Alps us Brits have is a potentiometer or two!


Oh well... at least we can mow the lawn, on a Sunday, even if we're banned from watering it...  

LOL - You win

 

[Light - Man]

   
Hey, not all of us live in the rarefied air (and with an endless mountain stream of water) on a personal Alp - the only Alps us Brits have is a potentiometer or two!
 
 
Oh well... at least we can mow the lawn, on a Sunday, even if we're banned from watering it...

 

 
No need to waste your energy mowing the lawn in the heat, just get yourself some grass eating pets and water your pets and your lawn all at the same time!

 

 

[canali]

the audeze cipher cable that accompanies the new sine portable seems interesting.
...wonder if that is the way of the future for many of us who want good portable sound without
the added gadgets and gizmos adding weight or just bulk.
 
i'd definitely que up for something like that can could be android/ios compatible and offer the mojo magic
for my smartphone, dap or laptop.
 
will chord consider coming out with something similar should this new market heat up, i wonder....?
 
a while ago there was some discussion of this cable's unique approach to portable sound vs the dragonfly red (see below).
audeze then came on to clarify a few things, which i thought i'd post here.
http://www.head-fi.org/t/793518/audeze-sine-series/1470
 
seems most interesting: keeps any EQ settings the same etc....many things going on, it seems
 

 
http://www.theverge.com/2016/6/7/11874706/iphone-7-lightning-headphones-reasons
 
 
post #1477 of 1534

6 days, 13 hours ago



 

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1. Audeze
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1. 202 Posts. Joined 5/2009
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  anyone compared the cipher cable to a dragonfly red?

Two entirely different products. The Cipher is not just a DAC, it has a DSP, AMP and a power management module to adjust power draw from iDevice when it is in different modes (sleep mode, screen-off etc). In addition it has a MEMS microphone and a Analog to Digital convertor.  In future, we will also add more functionality to the DSP to have additional features (more than just EQ) and it will be upgradable through the App. We intentionally limited the power draw and optimized the circuit, to ensure we don't drain the battery.