Igor

Re: MixBuzz500 build/support tHread
« Reply #60 on: July 11, 2010, 06:15:17 PM »
Quote
ok, the R4 3k74 was the cause of limiting now the unit work nice
MAN.... My congrats!!! You're fast!!!!

related problems:

Quote
- on ratio 2 the point of vu meter come to 8, cause of the diode D8 (for 4000 mode) D7 ( for gsll mode)in bad direction
- R34 & R40 burn the TL074 IC7 is in bad direction, change the resistor and the TL074
- SWITCH 3pdt on off on seems don't work, jsut link the three points ratings of the switch

In other words:

Check carefully if there's no components placed wrong. Check all resistor values.
Thanx again to Stereokillah, why not Sherlock Holmes?
:)
I corrected 3rd post of this thread, BOM is right;
Put solder joint to pads near the 3pdt switch;
Thanx to 10R resistors, they acts as fuses if op-amp placed in wrong direction :)

Another thing. Regarding this thread:
http://www.groupdiy.com/index.php?topic=39897
Be careful when placing the unit inside 51x rack not to short power supply rails.
It is really hard to do: I tested MixBuzz500 in both 51X and Lunchbox racks),
but...who knows, everything possible.
For future, I will do all my 500/51x stuff with "slotted" connector.


http://www.ij-audio.com
(new site hopefully will be up in July)


stereokillah

Re: MixBuzz500 build/support tHread
« Reply #61 on: July 12, 2010, 04:56:11 PM »


thank you for this great projetc

Sherlock Holmes ???
why because he had a pipe  ;D

i prefer Colombo because Appearances are deceptive, and he have always a  cigar  :D
if your neighbour is hunger .. don't give him fish, teach him how fishing ...

Igor

Re: MixBuzz500 build/support tHread
« Reply #62 on: July 12, 2010, 07:27:48 PM »
:)

Thank you! Really, I very impressed.
Are you cigar smoker?
BTW, did you checked the ratios? And, please let us know about sound.
http://www.ij-audio.com
(new site hopefully will be up in July)

stereokillah

Re: MixBuzz500 build/support tHread
« Reply #63 on: July 12, 2010, 08:04:30 PM »
 i did'nt  realy have time to check the performance, i've added trimpot for threshold , very interisting and i think to calibrate it, it's just as your feelµ.
 i need to move all my material during this week, i'll check all after in good condition.

Quote
Are you cigar smoker?
no some times cigario
if your neighbour is hunger .. don't give him fish, teach him how fishing ...

Igor

Re: MixBuzz500 build/support tHread
« Reply #64 on: July 13, 2010, 04:36:37 AM »
Cool! Looking forward.
http://www.ij-audio.com
(new site hopefully will be up in July)

oceres

Re: MixBuzz500 build/support tHread
« Reply #65 on: July 13, 2010, 08:16:39 AM »
 ;D can't wait to start building this baby! I'm so excited

I'm sourcing parts at the moment and I've no idea which leds to buy... there's too many of them lol

lamp size 5mm / T-1 3/4 ? forward current? Is it ok to use flat-top for the 3mm led?

Igor

Re: MixBuzz500 build/support tHread
« Reply #66 on: July 13, 2010, 09:21:30 AM »
;D can't wait to start building this baby! I'm so excited

I'm sourcing parts at the moment and I've no idea which leds to buy... there's too many of them lol

lamp size 5mm / T-1 3/4 ? forward current? Is it ok to use flat-top for the 3mm led?
Yes, it is OK for 3mm flat top led. Will look neat.
Regarding the VU illumination LED's. Easy way is to check at your local
electronics store for brignt LED's.
Or, search supplier for filters: led, 5mm, 1500-5000 mcd brightness, pcb mounting, 10...30 deg, etc, like here:
http://il.farnell.com/jsp/search/browse.jsp?N=500004+1004334+543666+373739+463779+373740+373741+5116075+356266+567790+578218+578818+578805+578802+578796+578790+578772+578766+578755+578748+5075942+578728+578724+578363+578373+578383+578392+578416+578423+578431+578436+578461+578475+578487+578493+578514+578523+578556+578572+578603+578646+578655+578675+578709+578720+5368163+5368166+5368176+5368172+5368179+5368183+5368140&Ns=PRICE_PLS_017_PRICE1|0&Ntk=gensearch_001&Ntt=led+5mm&Ntx=mode+matchallpartial&locale=en_IL&appliedparametrics=true&getResults=true&originalQueryURL=/jsp/search/browse.jsp%3FN%3D500004%2B1004334%26Ntk%3Dgensearch_001%26Ntt%3Dled%2B5mm%26Ntx%3Dmode%2Bmatchallpartial%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Den_IL%26catalogId%3D%26prevNValues%3D500004%2B1004334
http://www.ij-audio.com
(new site hopefully will be up in July)

RedNoise

Re: MixBuzz500 build/support tHread
« Reply #67 on: July 14, 2010, 01:16:13 PM »
Hi there here's a pic of my work in progress...

 :P
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

Ryake

Re: MixBuzz500 build/support tHread
« Reply #68 on: July 14, 2010, 05:47:44 PM »
Can't wait to get mine in the mail and get started. This will help me get my mind off the world cup being over  ;D

Igor

Re: MixBuzz500 build/support tHread
« Reply #69 on: July 14, 2010, 06:32:12 PM »
@Rednoise: superfast French DIY team!!!!! Cool. Very accurate.

OHHH!!!!! Don't remind me world cup. PLEASE!!!
It was impossible to drink beer at any pub there. Those football people!!!!
Those huge screens with running football robots!!!! GOOOL!!!!!!
Hell is other people, (c) Jean-Paul Sartre, I agree, but real hell is Word Cup. No way.
I was sooo happy it finished!  ;D :P : :D
« Last Edit: July 14, 2010, 06:34:40 PM by Igor »
http://www.ij-audio.com
(new site hopefully will be up in July)


RedNoise

Re: MixBuzz500 build/support tHread
« Reply #70 on: July 15, 2010, 12:22:51 AM »

Hell is other people, (c) Jean-Paul Sartre, I agree, but real hell is Word Cup. No way.


Especialy when you were french supporter for this one WC... :-\ ...Worst : my second blood is Italian... :-X
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

Ryake

Re: MixBuzz500 build/support tHread
« Reply #71 on: July 15, 2010, 08:45:10 AM »
The US was first in their group but France and Italy didn't even get out of their group. Very strange haha

AudioGimmer

Re: MixBuzz500 build/support tHread
« Reply #72 on: July 15, 2010, 01:14:55 PM »
Back to the mixbuzz questions....

1. What about pins for the VCA replacement boards to connect to the audio boards. Igor, did you just use resistor legs soldered to the VCA boards and then to the audio boards?

2. Sockets for the Thats VCA chips? Are there any off the shelf sockets for 8pin SIL?
Rednoise, what did you use? I see you have already got some soldered in there... [ and very neat work it looks too]

AG

RedNoise

Re: MixBuzz500 build/support tHread
« Reply #73 on: July 15, 2010, 02:27:01 PM »
Hi AudioGimmer!
Regarding That VCA sockets , I used SIL 32 cut @ 8 points...It worked fine in my GSSL so...ie :
http://cgi.ebay.fr/32-way-SIL-Socket-Header-Turned-Pin-Grooved-2-pack-/180530615923?cmd=ViewItem&pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2a08769673
I intend to use 202X , not the VCA replacement boards , but : 1N4007 cut legs are a good and cheap pins
« Last Edit: July 15, 2010, 05:14:15 PM by RedNoise »
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

AudioGimmer

Re: MixBuzz500 build/support tHread
« Reply #74 on: July 15, 2010, 05:10:23 PM »
Hey RedNoise, those look perfect, merci beaucoup.

Soldering starts next week, I have some free time.....

AG

RedNoise

Re: MixBuzz500 build/support tHread
« Reply #75 on: July 15, 2010, 05:13:14 PM »
This build is a real pleasure to solder!!!I hope you'll enjoy it as I do !
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

stereokillah

Re: MixBuzz500 build/support tHread
« Reply #76 on: July 15, 2010, 07:44:31 PM »
hello guys, i would give you a small trick with ribbon.

cut 4 parts about 20cm put your connector on it and after calibration just cut in the middle two of this to have 4 ribbon for assembled the unit .
if your neighbour is hunger .. don't give him fish, teach him how fishing ...

Igor

Re: MixBuzz500 build/support tHread
« Reply #77 on: July 16, 2010, 08:53:45 AM »
Already answered, almost nothing to add...
Diode legs etc are perfect for VCA replacement boards.
Replacement board with 4x2181B sounds really nice, worthy to try.
4x A grade VCA's IMHO overkill, I did not heard the difference between A and B grades.


hello guys, i would give you a small trick with ribbon.

cut 4 parts about 20cm put your connector on it and after calibration just cut in the middle two of this to have 4 ribbon for assembled the unit .


Excellent idea about ribbons!!!
http://www.ij-audio.com
(new site hopefully will be up in July)

Brizco

Re: MixBuzz500 build/support tHread
« Reply #78 on: July 20, 2010, 01:04:33 PM »
finished the mixbuzz today and tried to test it... but: R16 is burning on both audio boards! (R16 is 10R 1/2W)

now i have to look for the reason... every hint is welcome!


Brizco

Re: MixBuzz500 build/support tHread
« Reply #79 on: July 20, 2010, 03:17:56 PM »
finished the mixbuzz today and tried to test it... but: R16 is burning on both audio boards! (R16 is 10R 1/2W)

now i have to look for the reason... every hint is welcome!



found the mistake: both ina134 are defective!


 

Related Topics

  Subject / Started by Replies Last post
734 Replies
164600 Views
Last post January 08, 2020, 01:13:55 PM
by Spencerleehorton
529 Replies
167814 Views
Last post May 27, 2020, 06:20:38 AM
by eternal slang
983 Replies
192012 Views
Last post April 24, 2020, 09:32:44 PM
by Blondino
141 Replies
40911 Views
Last post April 24, 2019, 06:18:12 PM
by Mrosso