Topic: Edirol R09HR

[powermonkey]

Brief bit of the lovely Duffy from last night. CA11's > FEL BMA1 > R09HR, balanced (1.8db boost to left channel), sample chopped out > 320k mp3 (internet playing up, would take too long to upload flac).

https://download.yousendit.com/AA74C78816AE7711



I <3 Duffy. Gorgeous voice.

[Dede2002]

Can you please tell me the main chip on this thing? 

I have already reassembled it, but being I have gotten several PM's asking for the same, I will take it apart again this weekend and get all the chip numbers I can read. Should have done that the first time I had it apart.

No worries.  Thanks brave soul!

  Richard

Brave soul indeed 
+T

[GregDunn]

My gosh, this is a tiny lil' thing!    And I thought my trusty Sony D-100 was petite...

Sweetwater dropped mine on my doorstep today and I'm busily getting used to it because I want to tape a show tomorrow. What does everyone do about mounting the unit on a stand in the field - is it best to go ahead and buy the Roland mic stand adapter?  I usually hung my D-100 from the mic stand with a heavy loop of metallic needlepoint thread through its leatherette case, since the mics were sitting atop the stand.  But the R-09HR of course has its mics built in and I will occasionally use them for quickie recordings or when I don't need the externals.

Any thoughts?

[JD]

All right here are all the chip numbers I could manage to read.(from chips that looked important anyway)

bottom board
t17a  bal       (8 leads)

center board top side

r1 p3  (12 leads?)
22579 k747f  (4 leads?)
jeo   (8 leads several of these)
2737 72f jrc  (8 leads)
h157 7j  (8 leads)
7k1y lv u04a (14 leads)
24576 k803f  (4 leads?)
wm8776s 7batbk6 (48 leads)
eac 7y1 (24 leads)
 

center board bottom side
9535 0304 bug741 (24 leads)
z4052 7373 (16 leads)
lbrn n985 733 (9 leads?)

top board top side
spansion al016d70bf102 752bby07 h (cannot get lead count)
looks to be several unreadable chips under the sd socket

bottom side of top board
too much work to find out, probably not much there as all the front push buttons would be on that side.

Would love any feedback one these chip numbers...

one other thing of interest, the center board has a small watch-like battery on it, looks to be easily replaced if needed.

Jamie

[digifish_music]

All right here are all the chip numbers I could manage to read.(from chips that looked important anyway)

bottom board
t17a  bal       (8 leads)

center board top side

r1 p3  (12 leads?)
22579 k747f  (4 leads?)
jeo   (8 leads several of these)
2737 72f jrc  (8 leads)
h157 7j  (8 leads)
7k1y lv u04a (14 leads)
24576 k803f  (4 leads?)
wm8776s 7batbk6 (48 leads)
eac 7y1 (24 leads)
 

center board bottom side
9535 0304 bug741 (24 leads)
z4052 7373 (16 leads)
lbrn n985 733 (9 leads?)

top board top side
spansion al016d70bf102 752bby07 h (cannot get lead count)
looks to be several unreadable chips under the sd socket

bottom side of top board
too much work to find out, probably not much there as all the front push buttons would be on that side.

Would love any feedback one these chip numbers...

one other thing of interest, the center board has a small watch-like battery on it, looks to be easily replaced if needed.

Jamie

Great stuff, what are your disassembly instructions?

digifish

[illconditioned]

All right here are all the chip numbers I could manage to read.(from chips that looked important anyway)

bottom board
t17a  bal       (8 leads)

center board top side

r1 p3  (12 leads?)
22579 k747f  (4 leads?)
jeo   (8 leads several of these)
2737 72f jrc  (8 leads)
h157 7j  (8 leads)
7k1y lv u04a (14 leads)
24576 k803f  (4 leads?)
wm8776s 7batbk6 (48 leads)
eac 7y1 (24 leads)
 

center board bottom side
9535 0304 bug741 (24 leads)
z4052 7373 (16 leads)
lbrn n985 733 (9 leads?)

top board top side
spansion al016d70bf102 752bby07 h (cannot get lead count)
looks to be several unreadable chips under the sd socket

bottom side of top board
too much work to find out, probably not much there as all the front push buttons would be on that side.

Would love any feedback one these chip numbers...

one other thing of interest, the center board has a small watch-like battery on it, looks to be easily replaced if needed.

Jamie

OK, looks like a *totally new* design from the R09.  Wow, I'm surprised.  R09 was a single Burr Brown ADC/DAC/Mic pre/headphone amp/mp3 codec.  This has: wm8776s, plain codec; jrc 2737, low voltage single supply opamp.

Definitely worth a listen to see if R09 noise floor is improved.  ADC could go either way.

  Richard

[bgalizio]

All right here are all the chip numbers I could manage to read.(from chips that looked important anyway)

bottom board
t17a  bal       (8 leads)

center board top side

r1 p3  (12 leads?)
22579 k747f  (4 leads?)
jeo   (8 leads several of these)
2737 72f jrc  (8 leads)
h157 7j  (8 leads)
7k1y lv u04a (14 leads)
24576 k803f  (4 leads?)
wm8776s 7batbk6 (48 leads)
eac 7y1 (24 leads)
 

center board bottom side
9535 0304 bug741 (24 leads)
z4052 7373 (16 leads)
lbrn n985 733 (9 leads?)

top board top side
spansion al016d70bf102 752bby07 h (cannot get lead count)
looks to be several unreadable chips under the sd socket

bottom side of top board
too much work to find out, probably not much there as all the front push buttons would be on that side.

Would love any feedback one these chip numbers...

one other thing of interest, the center board has a small watch-like battery on it, looks to be easily replaced if needed.

Jamie

OK, looks like a *totally new* design from the R09.  Wow, I'm surprised.  R09 was a single Burr Brown ADC/DAC/Mic pre/headphone amp/mp3 codec.  This has: wm8776s, plain codec; jrc 2737, low voltage single supply opamp.

Definitely worth a listen to see if R09 noise floor is improved.  ADC could go either way.

  Richard

Richard,

Any easy way to measure noise floor? I've read you can pass a resistor across the input, but I don't have easy access to that stuff. Could I hook the unit(s) up to my CD player, with the player off, and record "silence" at different gain levels? If not entirely accurate, it could at least give relative values between the two units.

[udovdh]

What differences are there according to the codec datasheets? (i.e. how do the R09 and R09-HR codecs compare on paper?)

[bgalizio]

I updated to firmware 1.04 last night with no issues. Not sure if it works any better or worse, though.

[JD]

Great stuff, what are your disassembly instructions?

All you need is a small phillips screwdriver.

1-- remove battery cover and batteries
2-- remove 5 screws that where concealed by the cover
     note: there is 1 under where the batteries go to the right side that is easy to overlook
3-- remove the 6 screws on the sides of the unit (three on each side)
4--lift off back cover being careful to not lose the 5 plastic pieces that go onto the slide switches
5--Unplug the ribbon cable that goes from the first board to the small board up at the microphones.
    my picture shows it unplugged on the microphone side, but it easier to reassemble if you unplug it from the other end
6-- Lift off the microphone assembly
7-- remove 4 screws on top board and lift off (it is plugged into the next board)
8-- Unplug the small leads coming from the batteries.
9-- Remove the four screws in the plastic frame that is over the next board (to are silver and two are recessed and black)
10--Lift off the next board. (it is also plugged into the board below it.) Be careful to not lose the three side button pieces that will now be loose)

to assemble do the reverse

I did not disassemble the board at the microphones or did I remove the bottom board and the LCD display.

If you are not good at taking things apart and putting them back together, I do not recommend trying this. And the circuit boards should be handled in a way that they will not be damaged by Electrostatic Discharge.


Overall this unit comes apart and goes together better than the r09 as there is no glue-strips holding the covers on.

Have fun!

[illconditioned]

Richard,

Any easy way to measure noise floor? I've read you can pass a resistor across the input, but I don't have easy access to that stuff. Could I hook the unit(s) up to my CD player, with the player off, and record "silence" at different gain levels? If not entirely accurate, it could at least give relative values between the two units.

Thanks for the offer to help!

Do you have a set of mics with a miniplug (or just a Sony "T" mic or anything)?
If so, plug this into the Edirol and record something quiet like a clock ticking.
Do this with both the Edirol R09 and the HR.  Then compare.
Now, I'm guessing you have just the HR, right?  OK, maybe someone out there with both units can do it.

  Richard

[bgalizio]

Richard,

Any easy way to measure noise floor? I've read you can pass a resistor across the input, but I don't have easy access to that stuff. Could I hook the unit(s) up to my CD player, with the player off, and record "silence" at different gain levels? If not entirely accurate, it could at least give relative values between the two units.

Thanks for the offer to help!

Do you have a set of mics with a miniplug (or just a Sony "T" mic or anything)?
If so, plug this into the Edirol and record something quiet like a clock ticking.
Do this with both the Edirol R09 and the HR.  Then compare.
Now, I'm guessing you have just the HR, right?  OK, maybe someone out there with both units can do it.

  Richard

I have both units right now, but no mics. Personally, I'm only interested in the line-in specs, as I'm just a SBD patcher now.

[illconditioned]

Richard,

Any easy way to measure noise floor? I've read you can pass a resistor across the input, but I don't have easy access to that stuff. Could I hook the unit(s) up to my CD player, with the player off, and record "silence" at different gain levels? If not entirely accurate, it could at least give relative values between the two units.

Thanks for the offer to help!

Do you have a set of mics with a miniplug (or just a Sony "T" mic or anything)?
If so, plug this into the Edirol and record something quiet like a clock ticking.
Do this with both the Edirol R09 and the HR.  Then compare.
Now, I'm guessing you have just the HR, right?  OK, maybe someone out there with both units can do it.

  Richard

I have both units right now, but no mics. Personally, I'm only interested in the line-in specs, as I'm just a SBD patcher now.

I think for line in, there are really no issues.  The SNR of the R09 (measured by me) is approx 90dB, ie., 15 bits, which is excellent for a consumer device.  All this talk about 24 bits, but there is really no way anything else in a sound reinforcement situation is going to have any more SNR.  The HR could be a bit better.  But really 90dB is plenty.  Where you run into trouble is when using some gain on the mic pre. "Hot" mics will drive this thing nicely, but the problem comes with lower output mics and/or quieter sounds.  Right now I use MD for these, but it would be great to have the convenience (flash memory, etc) of the Edirol if I could get good low noise performance.

Anyway, if anyone out there can do a mic in comparison, or put resistors on the inputs, that would be great.

Thanks!
  Richard

[digifish_music]

Great stuff, what are your disassembly instructions?

All you need is a small phillips screwdriver.

1-- remove battery cover and batteries
...

10--Lift off the next board. (it is also plugged into the board below it.) Be careful to not lose the three side button pieces that will now be loose)

+T Thanks for that, looks a little less dangerous to open than the R09

I am waiting for mine to arrive...screwdriver at the ready 

digifish

[OOK]

All right here are all the chip numbers I could manage to read.(from chips that looked important anyway)

bottom board
t17a  bal       (8 leads)

center board top side

r1 p3  (12 leads?)
22579 k747f  (4 leads?)
jeo   (8 leads several of these)
2737 72f jrc  (8 leads)
h157 7j  (8 leads)
7k1y lv u04a (14 leads)
24576 k803f  (4 leads?)
wm8776s 7batbk6 (48 leads)
eac 7y1 (24 leads)
 

center board bottom side
9535 0304 bug741 (24 leads)
z4052 7373 (16 leads)
lbrn n985 733 (9 leads?)

top board top side
spansion al016d70bf102 752bby07 h (cannot get lead count)
looks to be several unreadable chips under the sd socket

bottom side of top board
too much work to find out, probably not much there as all the front push buttons would be on that side.

Would love any feedback one these chip numbers...

one other thing of interest, the center board has a small watch-like battery on it, looks to be easily replaced if needed.

Jamie

Not sure if this was covered earlier but the other more inportant thing that Jamie missed in his report is the build quality of the input jacks has been improved.  In our discussion of this unit he informed me that the input jacks are now soldered to the board which is great news.  Should do away with the input failures experienced on the initial models.
T+ Jamie for the report.......

Peace OOK