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Old 3rd January 2012, 09:32 PM   #21
miguelnoda is offline miguelnoda  Spain
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hello I have a question that has prior background noise is normal or has some kind
of problem could be the relay or the gain, as my previous one has nothing
is empty at low volume.
thanks
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Old 3rd January 2012, 09:34 PM   #22
miguelnoda is offline miguelnoda  Spain
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hello also like to know if you can solve the heating of PCB 3.3K resistors
thanks
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Old 4th January 2012, 02:13 AM   #23
mikojat is offline mikojat  Indonesia
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Hi Miguel,
Background noise at low volume can come from anywhere, such as your amplifier, source and from your preamp to. Did you check your amp without preamp?

Resistor's with 3k3 rated in 3 watt (R101,R102,R301,R302) serve as the loads for the transistors, it is normal if they little heat....
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Old 4th January 2012, 07:53 AM   #24
miguelnoda is offline miguelnoda  Spain
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Noise is a blow and the amp only and does not heat up enough resistance the output and input have made ​​very little
damaged the circuit board.
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Old 4th January 2012, 08:07 AM   #25
miguelnoda is offline miguelnoda  Spain
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hOLA SABES SI TU PREVIO TIENE SOPLIDO DE FONDO EL OTRO PREVIO QUE TENGO YO UN USHER NO TIENE NADA.
UN SALUDO MIGUEL
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Old 4th January 2012, 11:49 AM   #26
ramallo is offline ramallo  Europe
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pass labs x2-1
Quote:
Originally Posted by miguelnoda View Post
hOLA SABES SI TU PREVIO TIENE SOPLIDO DE FONDO EL OTRO PREVIO QUE TENGO YO UN USHER NO TIENE NADA.
UN SALUDO MIGUEL
Hola Miguel,

El Aleph L no tiene ningún soplido (Tampoco ninguno de los de Pass HUM que tengo tiene ruido), es muy raro que el tuyo si está en buenas condiciones lo tenga, estaría bien revisarlo (Si por privado me dices donde estás te puedo recomendar a alguien).

Hi Miguel,

The Aleph L hasn't any noise (like all of my DIY Pass preamps), if the unit is in good condition, it is very strange that your unit does emit a noise. It would be a good idea to revise the preamp.

Regards
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Old 4th January 2012, 12:01 PM   #27
KatieandDad is online now KatieandDad  United Kingdom
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Has anyone got the schematic for the Aleph 2X
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Old 4th January 2012, 12:03 PM   #28
KatieandDad is online now KatieandDad  United Kingdom
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As Ramallo says. My B1 is completely SILENT - completely BLACK in operation.

It's now running with a regulated supply but it was SILENT with just a standard rectifier capacitor supply.
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Old 4th January 2012, 01:20 PM   #29
Audiofanatic is offline Audiofanatic  Netherlands
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Default PM Me with your D-tails !

Quote:
Originally Posted by ramallo View Post
Hola Miguel,

(Si por privado me dices donde estás te puedo recomendar a alguien).

Hi Miguel,

The Aleph L hasn't any noise (like all of my DIY Pass preamps), if the unit is in good condition, it is very strange that your unit does emit a noise. It would be a good idea to revise the preamp.

Regards

If you send me a Private mail telling me where you are (located) perhaps I can recommend someone (to help you out).


Regards, Saludos,

José

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Old 4th January 2012, 10:12 PM   #30
miguelnoda is offline miguelnoda  Spain
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Default pass labas

Hello someone would have pictures of the inside of this amp x2 to verify
if one of the diodes of the source has a bridge, as in the lower part has
a resistor and a diode soldier on the surface of the PCB.
-Miguel
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