Mezmerize B1 Buffer Preamp

[rsaumure]

Someone literally just bought all the WP2773ID from Mouser =(

Thats a lot of LEDs - Christmas decorations? Did they buy the green as well? LOL

 

[Salas]

Someone's decorating and heating a monster casino with powered on DCB1s LOL

 

[batty]

How many is "all"?

 

[pelayostyle]

There were about 2,116 left as of last Tuesday

 

[Salas]

Orange ones* glow as nicely and in stock so the red LEDs saboteur failed to stop us.

*WP2773ND

 

[dewdrop]

Orange ones* glow as nicely and in stock so the red LEDs saboteur failed to stop us.

*WP2773ND

Lol. You cant stop us from building our amps!

 

[batty]

I have about 100 of the red ones.

 

[Salas]

Generic RED in 3mm will also do as always. It just usually takes some Vf selection for a nearer total voltage per rail while the WP2773s are closer together than others right out of the bag. Provided that those two JFETs located near to the 1 Ohm resistors are also comparable for IDSS, say within 1mA, the V+ V- will end up satisfactorily close too.

 

[batty]

Can other diodes be used instead of the MUR120 for the rectifier?

 

[Salas]

Of course

 

[batty]

Which of the LSK170s do I buy from the shop here? there are 4 different choices.
Are they matched?

 

[HatlessChimp]

Which of the LSK170s do I buy from the shop here? there are 4 different choices.
Are they matched?

I dont think they have any good ones left.

 

[merlin2069er]

Is it possible to drive headphones with the mesmerize b1?

I have Senheiser HD 598SR headphones (that have impedance of 50 ohm ).

 

[Salas]

Not really, as a Mez B1 has about 250R output impedance itself.

 

[batty]

I dont think they have any good ones left.

Oh well there goes that project....

 

[dewdrop]

Oh well there goes that project....

Go for DCG3 ;-)

 

[Salas]

Oh well there goes that project....

See posts #242 and #254 for meantime alternative sources

 

[batty]

Ordered from Germany.
Thanks Salas

 

[Salas]

You are welcome. Keep us posted.

 

[batty]

Now it seems that the Relays are obsolete... I'm seriously giving up on this one.