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Old 25th July 2010, 09:32 AM   #121
IMAK is offline IMAK  India
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Hi SORO,

nice led vu meter. but which amp do you use?
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Old 25th July 2010, 01:52 PM   #122
soro is offline soro  Taiwan
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Quote:
Originally Posted by IMAK View Post
Hi SORO,

nice led vu meter. but which amp do you use?
QUAD 405

case is made by my design.
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Old 2nd August 2010, 07:10 AM   #123
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Quote:
Originally Posted by redhorseaudio View Post
Hi apex,

I have attached schematic of tone control_20Hz-20kHz.I want to use 47k pot in place of 10k pot so can you help me to change the RC network value?

thanks
Hi friend,

try this preamp schema, I found it from web
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File Type: gif Preamp.gif (77.9 KB, 3223 views)
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Old 5th September 2010, 10:54 PM   #124
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Default Xs2

12dB/oct activ X-over with balanced input and outputs for subwoofer (LO),satelite(HI) or full-range(FR). X-over adjust 50-250Hz, and level for satelite (HI).
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File Type: jpg APEX aktiv sub-sat X.jpg (142.2 KB, 3100 views)
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Old 6th September 2010, 01:20 AM   #125
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Quote:
Originally Posted by apexaudio View Post
12dB/oct activ X-over with balanced input and outputs for subwoofer (LO),satelite(HI) or full-range(FR). X-over adjust 50-250Hz, and level for satelite (HI).
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File Type: jpg APEX XS2 sub-sat.JPG (30.6 KB, 2811 views)
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Old 6th September 2010, 08:14 AM   #126
soro is offline soro  Taiwan
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How about this one.

headphone Amps or Preamps.
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File Type: jpg DSCN4233-1.JPG (119.5 KB, 2586 views)
File Type: jpg DSCN4277-1.JPG (129.6 KB, 2297 views)
File Type: jpg DSCN4234-1.JPG (122.0 KB, 707 views)
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Old 6th September 2010, 08:45 AM   #127
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Quote:
Originally Posted by apexaudio View Post
12dB/oct activ X-over with balanced input and outputs for subwoofer (LO),satelite(HI) or full-range(FR). X-over adjust 50-250Hz, and level for satelite (HI).
sir,
can you post schema and copper side for this project???..
tnx
regards
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Old 6th September 2010, 09:03 PM   #128
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PCB size: 60x40mm
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Old 12th September 2010, 06:35 PM   #129
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Appex, thanks for your great circuits! I am going to build this ML3 preamp with ur QUASI amp for my Bass Guitar. In our country buying Hertke,Roland,Fender.... r really expensive as they include 70% govt. tax So its a real help for me.

tell me is that volume control with ML3 enough for my setup or I hv to add one log pot to the input of my amp? The 15V power supply needs how much Ampere?
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Old 12th September 2010, 06:49 PM   #130
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Quote:
Originally Posted by panthojon View Post
Appex, thanks for your great circuits! I am going to build this ML3 preamp with ur QUASI amp for my Bass Guitar. In our country buying Hertke,Roland,Fender.... r really expensive as they include 70% govt. tax So its a real help for me.

tell me is that volume control with ML3 enough for my setup or I hv to add one log pot to the input of my amp? The 15V power supply needs how much Ampere?
In post #35 you have bass guitar amp, ML3 is universal preamp, volume control is enough. Use PSU +/-15V 500mA.
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