Bijou Headphone Amplifier build

For anything about cans, and the amplifiers that drive them
User avatar
Nick
Site Admin
Posts: 15706
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#31

Post by Nick »

For some values of equivalent.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
User avatar
Ali Tait
Eternally single
Posts: 4373
Joined: Fri Jun 08, 2007 8:10 pm
Location: Galashiels

#32

Post by Ali Tait »

Work in the dac?
User avatar
Ali Tait
Eternally single
Posts: 4373
Joined: Fri Jun 08, 2007 8:10 pm
Location: Galashiels

#33

Post by Ali Tait »

Work in the dac?
User avatar
Ali Tait
Eternally single
Posts: 4373
Joined: Fri Jun 08, 2007 8:10 pm
Location: Galashiels

#34

Post by Ali Tait »

In stereo? :D
User avatar
Nick
Site Admin
Posts: 15706
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#35

Post by Nick »

Yes, heater current a bit higher, but we tried when the DAC was at Andrews.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
User avatar
Ali Tait
Eternally single
Posts: 4373
Joined: Fri Jun 08, 2007 8:10 pm
Location: Galashiels

#36

Post by Ali Tait »

Any impressions as to sound?
User avatar
JackOfAll
Old Hand
Posts: 315
Joined: Sat Jul 31, 2010 11:56 am
Location: UK

#37

Post by JackOfAll »

deleted
Last edited by JackOfAll on Mon Sep 19, 2011 2:39 pm, edited 1 time in total.
User avatar
JackOfAll
Old Hand
Posts: 315
Joined: Sat Jul 31, 2010 11:56 am
Location: UK

#38

Post by JackOfAll »

deleted
Last edited by JackOfAll on Mon Sep 19, 2011 2:40 pm, edited 1 time in total.
User avatar
JackOfAll
Old Hand
Posts: 315
Joined: Sat Jul 31, 2010 11:56 am
Location: UK

#39

Post by JackOfAll »

deleted
Last edited by JackOfAll on Mon Sep 19, 2011 2:40 pm, edited 1 time in total.
User avatar
Nick
Site Admin
Posts: 15706
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#40

Post by Nick »

I just read the spec sheet that gave the figure to ambiant as 80C/W, that puts them at 80*75 + 25 = 85C. should be fine, but hotter than I would prefer, YMMV. At 1W them will be at 105W, again, should be still ok as max temp is 150C, But things in semiconductor land migrate at a rate depending on temperature.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
User avatar
pre65
Amstrad Tower of Power
Posts: 21373
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#41

Post by pre65 »

On the 10m45s I screw the chip to (usually) the amp case and attach the set resistor and gridstopper resistor to the legs.
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
User avatar
JackOfAll
Old Hand
Posts: 315
Joined: Sat Jul 31, 2010 11:56 am
Location: UK

#42

Post by JackOfAll »

deleted
Last edited by JackOfAll on Mon Sep 19, 2011 2:40 pm, edited 1 time in total.
User avatar
JackOfAll
Old Hand
Posts: 315
Joined: Sat Jul 31, 2010 11:56 am
Location: UK

#43

Post by JackOfAll »

deleted
Last edited by JackOfAll on Mon Sep 19, 2011 2:40 pm, edited 1 time in total.
User avatar
pre65
Amstrad Tower of Power
Posts: 21373
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#44

Post by pre65 »

JackOfAll wrote:
pre65 wrote:On the 10m45s I screw the chip to (usually) the amp case and attach the set resistor and gridstopper resistor to the legs.
Insulated from the chassis, hopefully! ;)
Oh yes indeedy. :)

I did a bulk buy for the forum some age ago, when Mouser (or the other USA supplier, forget the name) were still supplying them to the UK.
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
User avatar
JackOfAll
Old Hand
Posts: 315
Joined: Sat Jul 31, 2010 11:56 am
Location: UK

#45

Post by JackOfAll »

deleted
Last edited by JackOfAll on Mon Sep 19, 2011 2:41 pm, edited 1 time in total.
Post Reply