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6th March 2007, 01:48 PM
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#1 |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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Preamp
Hi!, this is a preamp for guitar or bass; but it have a problem; and I can´t find it.
When I turn it on, nothing happens. This is the circuit(you can see it with Express Pcb) |
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6th March 2007, 01:57 PM
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#2 |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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if you can´t see it; here is the Pic
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6th March 2007, 02:13 PM
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#3 |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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The supply, is a regulated +15v 0 -15v.
The input is my guitar. Here is the Specifications of the Rc4558 *La fuente de tension es regulada, de +15 0 -15v. La entrada es mi guitarra. Aqui están las especificaciones del integrado Rc4558 I hope you can help me.. espero q me puedas ayudar |
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6th March 2007, 09:58 PM
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#4 |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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P2 is rewired
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6th March 2007, 10:07 PM
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#5 |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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Now the preamp work! I have Signal in the output; but with noise.
When the gain is max, the output signal is distortioned. *Ahora el Preamplificador Funciona! tengo señal a la salida; pero con ruido. Cuando la ganancia esta al máximo, la señal de salida es distorsionada. |
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7th March 2007, 05:26 PM
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#6 |
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diyAudio Member
Join Date: Mar 2007
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pcb
Hola amigo.. has logrado un pcb para tu pre-amp? funciona?
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7th March 2007, 06:35 PM
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#7 | |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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Re: pcb
Quote:
Hi Doctor, the pre-amp works good; but it have noise(over 15Khz i Suppos). this is the Pcb. hola doctor, el pre-amp funciona bien, pero hay ruido (por encima de los 15 Khz supongo). Este es el Pcb. |
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7th March 2007, 06:36 PM
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#8 |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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and the Sch
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8th March 2007, 05:08 PM
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#9 |
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diyAudio Member
Join Date: Aug 2006
Location: Buenos Aires
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if someone have an opinion.... or a change for this preamp...
*Si alguno tiene una opinión..... o algun cambio para el Preamplificador.... |
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13th March 2007, 09:26 AM
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#10 |
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diyAudio Member
Join Date: Mar 2007
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pre-amp
Tanks you for answer.... / gracias por responder..
my engish is terrible..!! im sorry voy a estudiar el diagrama y en cuanto repare mi agujereadora voy a tratar de ensamblarlo y si puedo quitarle el ruido te aviso, lo has empleado en algo?? |
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