APEX NX16
.hello sir apex have a good day to you i have trying to layout your NX16 amp please kindly correct my PCB before i build it,and if this is correct what would be my speaker protect circuit to be use so that i can attach it this circuit
regards.... Adamart
.hello sir apex have a good day to you i have trying to layout your NX16 amp please kindly correct my PCB before i build it,and if this is correct what would be my speaker protect circuit to be use so that i can attach it this circuit
regards.... Adamart
Attachments
Hello Apexaudio! Accidentally found out that You are the author of the amplifier which I did
This APEX B500 I want to Express my gratitude to you, for a good amplifier that has been working for 3 years...) there 2SA1943,2SC52200 4 pieces and chip TL071, protection do another. Thank you very much.
This APEX B500 I want to Express my gratitude to you, for a good amplifier that has been working for 3 years...) there 2SA1943,2SC52200 4 pieces and chip TL071, protection do another. Thank you very much.
protec for NX16 amp apex
hi sir apex audio thanks for a kind reply to my post NX16 apex amp
sir you give me a layout of protect base on IC NE555 with NTC i appreciate that circuit sir but i need simple circuit like this... i attach here your schematic base on your AX14P is it possible to use it to this amp NX16 as speaker protect instead of that one you given me? i mean whats the difference between them is it a click of sound during powering on?
hi sir apex audio thanks for a kind reply to my post NX16 apex amp
sir you give me a layout of protect base on IC NE555 with NTC i appreciate that circuit sir but i need simple circuit like this... i attach here your schematic base on your AX14P is it possible to use it to this amp NX16 as speaker protect instead of that one you given me? i mean whats the difference between them is it a click of sound during powering on?
Attachments
..... corrected now .....
Alex
Sir,
I made this amplifier. I am new and I have no idea of the BIAS and other adjustments. I tested the amp with +/-45VDC and I used it with NE5532 preamp. It really sounded good but as i increased the volume, I have noticed the sound gets distorted and not very clear. Is it because faulty adjustments. I have no idea how to adjust the settings if 1K and 220ohm VR. Please help.
Thanks
Underbiased amp distorted at low volume... do you connect input gnd to psu gnd?
Attachments
Sir,
Please tell me the method of adjust bias. How adjust the 1k and 220ohm VR.
And sir can you recommend a good preamp for this amp. I made the 2pair OP version.
Thanks
..... or with 2 pairs OP transistors
Regards , Alex
Hello Sir,
I made this amplifier with same layout you posted. I am new and I have very poor knowledge about BIAS and other adjustments. I checked the amplifier with +/-45VDC and it sounded nice but as i increased the volume it starts to get distorted. is it something to do with BIAS and other adjustments. I checked it with a SANSUI PM-C50 baffle. Please tell me how to adjust the 1K and 220ohm VRs. Please help. I checked it with a NE5532 pre-amplifier. I have used the same pre-amplifier with K1058/J162 RAS100 amplifier and it worked perfect but with this amplifier the hi is not very crisp.
Also please recommend a good pre-amplifier/tone control to use with this amplifier.
Thanks
Attachments
hello apex,
This PSU is very interesting, I want to use it for my HV23 APEX amplified, but I use two transformers, one channel 500VA, with two capacity 15000uF 100V one channel .... you think I can adapt it to these parts?
Hi Mile,
I finished up the A40 today and hooked it up to the P30. Something is not right about the P30. I sounds like I have a phase issue. With the balance control set to either left or right, it sounds perfect but when the balance control is in the center the volume drops and the vocals are in the distance. Can you please check the schematic and check to see that the balance control is not inverting something?
Thanks, Terry
I finished up the A40 today and hooked it up to the P30. Something is not right about the P30. I sounds like I have a phase issue. With the balance control set to either left or right, it sounds perfect but when the balance control is in the center the volume drops and the vocals are in the distance. Can you please check the schematic and check to see that the balance control is not inverting something?
Thanks, Terry
What is value of your volume pot, can you post volume circuit... you can change balance circuit from balance 1 to balance 2 if you nee low output impedance from tone control output.
Regards
