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diyAB Amp - The "Honey Badger"
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Old 12th October 2013, 08:41 PM   #1081
rohot01 is offline rohot01  Taiwan
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And I'm measure speaker output and speaker gnd.
Reading around 1XmV to 1mV. Is it normal ??
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Old 19th October 2013, 05:24 PM   #1082
Krisfr is offline Krisfr  United States
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If one does not get you the other one will make you wish it did.

Not a good day for dead Popes or dyeing your hair either.
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Old 19th October 2013, 06:34 PM   #1083
Variac is offline Variac  Costa Rica
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diyAB Amp - The "Honey Badger"
Honey Badger don't give a darn..
He can take care of predators moving in on his audio turf.
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Last edited by Variac; 19th October 2013 at 06:36 PM.
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Old 20th October 2013, 02:28 AM   #1084
ostripper is offline ostripper  United States
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Quote:
Originally Posted by rohot01 View Post
And I'm measure speaker output and speaker gnd.
Reading around 1XmV to 1mV. Is it normal ??
That is normal ... as I said before R53/54 burn with no fuses ! Andrew T. suggested these and they have merit.
I do it different and just build up to the driver stage with 2 10R "sacrificial"
resistors on the rails before I go about "stuffin" outputs. Emitters of the drivers will be
+/- .6V with 2 68R's connected temporarily to the output coil.

NEVER a smoked output have I made (yoda speak ) .
To keep the Badgers "clean", consider "floating" R23
,27,32,33,36,37-41,50,53,54 slightly above the PCB or use "flameproof" devices.


OS
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Old 20th October 2013, 02:37 AM   #1085
TonyTecson is offline TonyTecson  Philippines
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diyAB Amp - The "Honey Badger"
^

i make it a practice to lift all resistors off the boards by at leas 1/16 inch in all my amplifier builds, more clearance for high powered ones....
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Old 20th October 2013, 03:16 AM   #1086
ostripper is offline ostripper  United States
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Quote:
Originally Posted by AJT View Post
^

I make it a practice to lift all resistors off the boards by at leas 1/16 inch in all my amplifier builds, more clearance for high powered ones....
Best to keep "COOL". I also use 100R for R27 , this will set the VAS current source for 5+ mA (very cool).
This will not affect the compensation of the amp in any way. The Vbe resistor (R29-680R) will need to be changed to 560R to give
the same range for "Vbias" (R30).

OS
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Old 28th October 2013, 09:32 PM   #1087
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
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I have a lot to read into this lot of info, maybe there is going to be one Honey Badger in

Puerto Rico soon

Regards
Juan
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Old 28th October 2013, 09:39 PM   #1088
still4given is offline still4given  United States
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diyAB Amp - The "Honey Badger"
Good for you Juan. It is a nice sounding amp and nice boards.
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Old 29th October 2013, 12:15 PM   #1089
Harry3 is offline Harry3  Australia
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OS I just need clarification as I am checking all the updates. In post 1036 page 104 you have the 12V zener and C6 going to earth G2.

On the original circuit diagram they go to R16. Am I missing something?

Can't wait for the new PCB's!
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Old 29th October 2013, 07:06 PM   #1090
ostripper is offline ostripper  United States
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Originally Posted by Harry3 View Post
OS I just need clarification as I am checking all the updates. In post 1036 page 104 you have the 12V zener and C6 going to earth G2.

On the original circuit diagram they go to R16. Am I missing something?

Can't wait for the new PCB's!
Yes ! The new PCB will have the C-Z jumper as default (Z goes to G2-small signal ground).
With the R , you could reference it to EITHER the "virtual" ground of the LTP (.7V - AKA "luxman way") or to the same hard ground as "Z".

Options will still be available but a "build it this way or die" is on the
screenprint (below).
Will be PMing Variac with this "final".

I just stuffed my boards (below 2), I know of NO lead space or hole issues.
Still need parts , not too economically secure. More E-waste !
OS
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