Buffalo III - flexibility without compromise. - Page 57

stephen1212 · 12th September 2011, 10:02 PM

I am running stock Placid and Placid BP with two of each running a dual mono set up with Trident upgrades on the BII Legato 2 without buffer and three Ventus ( only driving high impedance amplifier unbalanced.) I can touch the fins indefinitely,but can not hold the flat part of the heat sink that the device is connected to for more than a second. The current setting pots needed to be adjusted several times (shunting 60 ma) as things heated up but now seem stable continuously on.

Not having an infra red temp meter is the casual test to grab the fins or the flat section?

I know I am at the edge and plan to upgrade to HD versions, but notice that the heat sinks are the same size. I have some much larger heat sinks but the footprint of the HD-BP will not accommodate them.

Coris · 13th September 2011, 06:14 AM

For those interested in clock experiments with ESS9018, there is a new thread:
ESS9018 - try new, try more...

beau2317 · 14th September 2011, 05:09 AM

I also posted a new thread Buffalo III DAC with tube output stage

tyk · 15th September 2011, 08:29 AM

Hello,
I received a sidecar module today.
Where can I find schematic of sidecar?
or explanation for relay power supply
I'm just confused how to treat B ( on VD/B/GND side).

goodwill · 15th September 2011, 02:43 PM

I want to tap S/PDIF out from PCM2705 (Airport Express G) to 4-in-1 switch and then BIII.
May I ask the S/PDIF signal from PCM2705 (pin 5,6) is TTL Level? So that I must change the resistor on the 4-in-1 board from 75 ohm to 10k ohm according to manual?
Thanks!

Russ White · 16th September 2011, 11:43 AM

Why don't you just pull up it's data sheet?

Russ White · 16th September 2011, 11:45 AM

Quote:

Originally Posted by tyk

Hello,
I received a sidecar module today.
Where can I find schematic of sidecar?
or explanation for relay power supply
I'm just confused how to treat B ( on VD/B/GND side).

"B" is connected to the base of the trigger transistor.

You can connect the supply to ~5V the relays are active when you pull up "B" via a switch on any other mechanism.

I will post the schematic later today. There is not much to it.

The integration guide explains the use of sidecar.

LeonvB · 16th September 2011, 01:06 PM

Quote:

Why don't you just pull up it's data sheet?

http://www.ti.com/lit/ds/symlink/pcm2705.pdf

Bunpei · 16th September 2011, 06:42 PM

Many people might have read the message "Thanks Brian!" on the back side of BIII board. Near the printing, there are three through-holes.
Today, I could well realize the purpose of the holes.
I much appreciated Russ' well-considered pattern design that meets various requirements by users.

Coris · 08:19 PM

Quote:

Originally Posted by Bunpei

Many people might have read the message "Thanks Brian!" on the back side of BIII board. Near the printing, there are three through-holes.
Today, I could well realize the purpose of the holes.
I much appreciated Russ' well-considered pattern design that meets various requirements by users.

16th September 2011, 11:43 AM	#566
Russ White diyAudio Member Join Date: Jan 2005 Location: Nashville, TN, USA	Why don't you just pull up it's data sheet? __________________ Less pulp more juice Twisted Pear Audio.

16th September 2011, 06:42 PM	#569
Bunpei diyAudio Member Join Date: Aug 2008	Through holes labeled as "Thanks Brian!" Many people might have read the message "Thanks Brian!" on the back side of BIII board. Near the printing, there are three through-holes. Today, I could well realize the purpose of the holes. I much appreciated Russ' well-considered pattern design that meets various requirements by users.

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12th September 2011, 10:02 PM	#561
stephen1212 diyAudio Member Join Date: Mar 2007	I am running stock Placid and Placid BP with two of each running a dual mono set up with Trident upgrades on the BII Legato 2 without buffer and three Ventus ( only driving high impedance amplifier unbalanced.) I can touch the fins indefinitely,but can not hold the flat part of the heat sink that the device is connected to for more than a second. The current setting pots needed to be adjusted several times (shunting 60 ma) as things heated up but now seem stable continuously on. Not having an infra red temp meter is the casual test to grab the fins or the flat section? I know I am at the edge and plan to upgrade to HD versions, but notice that the heat sinks are the same size. I have some much larger heat sinks but the footprint of the HD-BP will not accommodate them.

13th September 2011, 06:14 AM	#562
Coris diyAudio Member Join Date: May 2009 Location: Norway	For those interested in clock experiments with ESS9018, there is a new thread: ESS9018 - try new, try more...

14th September 2011, 05:09 AM	#563
beau2317 Banned Join Date: Jul 2005 Location: Pukekohe, New Zealand	I also posted a new thread Buffalo III DAC with tube output stage

15th September 2011, 08:29 AM	#564
tyk diyAudio Member Join Date: Jun 2011	Hello, I received a sidecar module today. Where can I find schematic of sidecar? or explanation for relay power supply I'm just confused how to treat B ( on VD/B/GND side).

15th September 2011, 02:43 PM	#565
goodwill diyAudio Member Join Date: Jul 2006	I want to tap S/PDIF out from PCM2705 (Airport Express G) to 4-in-1 switch and then BIII. May I ask the S/PDIF signal from PCM2705 (pin 5,6) is TTL Level? So that I must change the resistor on the 4-in-1 board from 75 ohm to 10k ohm according to manual? Thanks!