Mic and Preamp have arrived!
Got the mic/preamp kit today John. Nice Work! I'll measure the resistors and follow along the schematic for what values go where. It should be straightforward. 😎
Got the mic/preamp kit today John. Nice Work! I'll measure the resistors and follow along the schematic for what values go where. It should be straightforward. 😎
John,
Did you get my PM requesting details and one full kit.
There's no desperate rush, I would just like to know if you received the message.
Thanks
Tom
Did you get my PM requesting details and one full kit.
There's no desperate rush, I would just like to know if you received the message.
Thanks
Tom
Mic Kit
I just have to connect the mic capsule to complete the kit.I assume that the shield connects to the pad that is joined to the outer case and the center conductor to the other pad. The reason I am asking is that an internet search showed a 3wire hookup and cutting of a trace. Just wanted to make sure.I am impressed with the amount of fabrication and engineering that went into these kits.Excellent value for sure.The only problem is that the green LED for the mic kit had to be inserted from the wrong side of the board in order for things to line up with the case.I only mention this so it can be rectified in later kits.
I just have to connect the mic capsule to complete the kit.I assume that the shield connects to the pad that is joined to the outer case and the center conductor to the other pad. The reason I am asking is that an internet search showed a 3wire hookup and cutting of a trace. Just wanted to make sure.I am impressed with the amount of fabrication and engineering that went into these kits.Excellent value for sure.The only problem is that the green LED for the mic kit had to be inserted from the wrong side of the board in order for things to line up with the case.I only mention this so it can be rectified in later kits.
Hi,
why is my kit running hot.
R1, R5 & the chipamp are all hot, almost too hot to hold a finger on.
The LED resistor is probably too low in value for my 16Vac transformer, easy sorted, using 2k//2k resistors. Does this LED need 30mA?
But the Zobel and chip being hot seems to indicate oscillation.
I only have the transformer connected, all the other inputs and outputs are empty.
why is my kit running hot.
R1, R5 & the chipamp are all hot, almost too hot to hold a finger on.
The LED resistor is probably too low in value for my 16Vac transformer, easy sorted, using 2k//2k resistors. Does this LED need 30mA?
But the Zobel and chip being hot seems to indicate oscillation.
I only have the transformer connected, all the other inputs and outputs are empty.
Wish fullfilled
Hey MJL21193.
searched for a long time to build the jig but could not find any details, was very depressed u know. I have some speakers i purchased from a store selling excess oem productions but without any t/s parameters. And i had no way to check it. but today i searched an found this thread of yours . i am too overjoyed to express.
i would like to purchase your full kit,
please tell me how to pay you.i am from india.
Also if you could include a manual or some thing alike on how to use this jig with speakerworkshop-with a sample, it will be very useful for a newbie like me.
thank you
Hey MJL21193.
searched for a long time to build the jig but could not find any details, was very depressed u know. I have some speakers i purchased from a store selling excess oem productions but without any t/s parameters. And i had no way to check it. but today i searched an found this thread of yours . i am too overjoyed to express.
i would like to purchase your full kit,
please tell me how to pay you.i am from india.
Also if you could include a manual or some thing alike on how to use this jig with speakerworkshop-with a sample, it will be very useful for a newbie like me.
thank you
Mic kit has arrived, but with no schematic or parts list. If someone has it, can you help me? please.
This was one of those moments where dual monitors came in really handy. I pasted the circuit board image into Microsoft Paint and and in another Paint window I reversed the circuit board image horizontally to help follow the traces with the board flipped back and forth...sort of. You could just print the images too...have fun!🙂
well mjl21193 is not replying from a long time, must been busy.
Any way of getting the testing jig gerber files+bom list so i can etch one for .
Any way of getting the testing jig gerber files+bom list so i can etch one for .
well I got my jig up and running
Finally got it together and tested now I need to get things calibrated and ready to start get FRD and ZMA files going
Finally got it together and tested now I need to get things calibrated and ready to start get FRD and ZMA files going
check your diodes for you have wrong way bias voltage getting through
you may have bad or wrongly placed your diodes check , so either replace them all or test and find out which ones are bad
you may have bad or wrongly placed your diodes check , so either replace them all or test and find out which ones are bad
The 8 diodes all match the PCB markings.
Don't need this debugged.
I want to know if anyone else has found some components running hot with no inputs and no outputs connected.
Don't need this debugged.
I want to know if anyone else has found some components running hot with no inputs and no outputs connected.
input is continually clip thus giving false reading
I have tried many things both with the mic and creative usb Audigy nx sound card and mixer to get it to be calibrated
what is the best way to calibrate and run this with Homimpulse
amp is set to put ~2.83 V at 61% output from the creative lab usb soundcard
and the phase is all over the place
I am using the following Behringer 802 mixer with 48 phantom power to a calibrated Behringer ECM 8000 to the mic input( bridge as in the instructions)
Thus getting a flat response 20 to 20khz with slight variation due to digital clipping
I have tried many things both with the mic and creative usb Audigy nx sound card and mixer to get it to be calibrated
what is the best way to calibrate and run this with Homimpulse
amp is set to put ~2.83 V at 61% output from the creative lab usb soundcard
and the phase is all over the place
I am using the following Behringer 802 mixer with 48 phantom power to a calibrated Behringer ECM 8000 to the mic input( bridge as in the instructions)
Thus getting a flat response 20 to 20khz with slight variation due to digital clipping
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