The Centrance HiFi M8 thread - Page 51

For me the question is moot, since I've already sacrificed the 1/8" HP port for the micro BNC SPDIF coax out.  And the golden adapter.

Edited by jacal01 - 11/29/12 at 7:35am

^ This is an option?

Just to clarify the argument for LO versus 1/8 HO. By tolerating a 1/4 adapter plug that just sits passively in the 1/4 jack and would only become an issue when removing it for a 1/4 headphone plug, you gain the following advantage:

1-Use of the M8 as a DAC only
2-Ability to AB the M8's integrated amp section versus any other portable, transportable or desktop amp for comparison/potential upgrade.
3-Ability to use the DAC in the above scenario as a matter of convenience and flexibility. Those who have attended many audio gatherings will appreciate the flexibility I think.

Functionally you get two different devices:

1-HifiM8 w/o LO = DAC/Amp, Pre-amp, iDevice transport/dock w/ XLR, 1/4, 1/8 jacks.
2-HifiM8 w/ LO + plug adapter = DAC/Amp, Pre-amp, iDevice transport/dock, DAC. w/ XLR, 1/4, 1/8 jacks.

Remember too, the number of self powered portable/transportable DACs is relatively small. So the HifiM8 now becomes a viable alternative for those looking for non USB dependent portable DAC w/ a battery. You've basically done what the CLAS + Rx amp combo does for half the price w/ more features and more flexibility by implementing a LO. Whether this can be done in the design is still unknown.


To clarify the USB input then, Android and USB on the go devices would use the same USB jack found on the far left of the iDevice version? Then the only difference is swapping the iDevice USB jack for SPDIF input. Thus anyone using the SPDIF LX version could also connect any iDevice to the LX USB jack if it works w/ the camera connection kit?

Btw, is there a price difference between the LX and non LX M8? Some confusing posts about this in the thread.
Edited by Akula1321 - 11/29/12 at 8:30am

Not really, no.  Let's just say that production is not being set up for a coax out configuration.

 

But I did vote for analog line out way back when, the quality of the volume pot being the question.  Michael stated that there should be no discernible difference.

 

Don't forget, you're also getting asynch 24/192 USB transport function with the optical SPDIF out.

Edited by jacal01 - 11/29/12 at 8:55am

I may not understand your question.

As I understand it for the LX and i~device the M8 can be used;  a) a computer USB DAC > connected to a AMP  b) a computer USB DAC/AMP for headphones c) a battery operated DAC > to an AMP d) a battery powered DAC/AMP for headphones.

 I would not be inconvenienced with a 1/4" with 1/8" adapter and line out at the 1/8" jack.  This configuration would make the device slightly more versatile for all.  That said, just my personal usage, I will be fine without line out.  That said, line out is a useful function, and one that might be expected on a device of this caliber?

 

OK, I think I'll sit back and let the dust settle on this one.  I'll be OK either way...

 

When you first mentioned the different jack options, this is the idea I had...

- faceplates with the jacks mounted

- the jacks connected to a pinstrip or short cable (possible a small pcb on the jacks if space/mounting options allow)

- this connects to sockets on the board (or vice versa)

- obviously which pins are connected depends on the jacks used

- so this would allow for changing faceplates and thus jacks, as all the soldering is already done on the faceplate, the rest is just plug 'n play

 

Granted this is all easier said than done. 'Twas just the idea in my head.

I would prefer to have a true line out. But it won't be a big deal for me if it doesn't happen. I would be very happy if it did.

 

+1

 

+2

 

Personally, I'd rather see the 1/8" as a fixed 2v line out, and use the tiny golden adapter in the 1/4" jack for 1/8" headphones.

 

 

I wouldn't have it any other way.  I have this compulsion to be prepared for every circumstance.  It must be a disease that falls somewhere between OCD and Type-A anal retentive...

 

Well, there you go again, posting something that makes perfect sense.

> To clarify the USB input then, Android and USB on the go devices would use the same USB jack found on the far left of the iDevice version?

Yes, that's true. All USB sources (computers, appropriate Android phones) would be connected to the USB jack on the left. An iPad with a Camera Connector Kit (CCK) could also be connected to the USB jack on the left, but it would be bulkier than connecting it to the iDevice input directly, without the CCK.

 

> Then the only difference is swapping the iDevice USB jack for SPDIF input.

Correct. The LX model substitutes the iDevice input for the SPDIF in Optical. No other changes.

 

> Thus anyone using the SPDIF LX version could also connect any iDevice to the LX USB jack if it works w/ the camera connection kit?

Yes, see above. Except not every iDevice supports the CCK.

 

> - faceplates with the jacks mounted

> - the jacks connected to a pinstrip or short cable (possible a small pcb on the jacks if space/mounting options allow)

> - this connects to sockets on the board (or vice versa)

Great idea and similar to what we have, but in the interest of robustness of road-worthiness, we chose to go with soldered connections, rather than plug-in connections. Soldered connections offer the highest amount of reliability. Anything that has the potential of being undone, will be eventually undone. We learned this the hard way, having tested a lot of products for shaking, dropping, running a car over, etc. I've got that mentality from years of "boot camp" training at Shure, back in the old days, and won't design anything to a lesser standard of reliability. It's just not worth the service hassle in my mind -- you'd need to send the box back, we'd need to repair it, etc... Why?  I know this sounds kind of funny in the Home audio space, since people aren't so used to mission-critical performance requirements here as they are in Broadcast and Recording domains, but that's what you get. 

 

In either case, rest assured, you are certainly getting more bang for the buck, not less ;)

Edited by mgoodman - 11/29/12 at 11:02pm

my vote goes for a "line level out and SPDIF out" combo plug.

True. This just happened to me yesterday. While trying to diagnose the problem with my Dyson fan, the support team asked me to dissemble to the motor right away without following the step by step procedure. A hinge on the fan broke in the process, and now I have the motor and the 'loop amplifier' to send back for repairs. Troublesome packing such a huge thing. Then as Michael mentioned above, all the hassles for the service team. Things in the past were make to last. Nowadays it's tough to find good, lasting design partly due to planned obsolescence.

 

Thank you CEntrance!

If I remember correctly there wasn't an option for the mini 4 pin XLR in the survey.

 

 

From my perspective it's a six of one and half dozen of the other kind of scenario. For everyday use the 3.5mm as a headphone output would preferable but I could also see scenarios where it being a line out would be useful as well. I guess if I had to make a call though I'd prefer to see it as a headphone output.