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Amplifier Modules and PCBs For Sale

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Deleted member 148505

GB150D Pictures
 

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Deleted member 148505

Auto Power-On Signal Detect

  • The relay is normally off when power is applied, needs signal to turn it on.
  • Turns on the relay when low level music signal is detected from low level source.
  • The relay stays on for predefined duration (5 mins), then shuts down afterwards when there is no music signal.
  • Also has 12V DC external trigger aside from music signal detection. (see pic)
  • Sensitivity can be adjusted. Detects as low as 10mV music signal.
  • Saves electricity, good for computer sound system, turns off amplifier when there's no output sound from computer.
  • 2 types of relay can be used 30A or 10A (see picture)
  • Needs 12V AC 100mA Transformer/ Power Supply
  • Small Footprint
  • PCB size: 2" x 3"

Attached Pictures :)
 

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Deleted member 148505

JLAudiophile-1200D

  • Based on IRAUDAMP9
  • Mostly through hole parts, easy to assemble and repair.
  • Only 12pcs SMD parts (4pcs 0805 100nf decoupling caps, 4pcs SOT-23 Totem Pole Buffer, 4pcs 0805 mosfet bleed resistor)
  • Dual layer, low noise PCB Design
  • Supply Voltage: +/- 80V DC
  • Needs floating 12V AC or 15V DC 1A for driver supply.
  • PCB size: 2.9" x 6"
 

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solviken

Member
Joined 2012
I im planning on bulding a Subwoofer amplifer with i hope your boards, The new JLAudiophile-1200D (Based on IRAUDAMP9) have you tested it on 2ohms? and it will be able to drive a 2 ohm subwoofer for a long period with ofc an external Heatsink?

Also does the PCB Auto Power On Signal Detect work as a softstart? and if so what is the biggest torodial it can handel?
 
Last edited:
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Deleted member 148505

solviken said:
I im planning on bulding a Subwoofer amplifer with i hope your boards, The new JLAudiophile-1200D (Based on IRAUDAMP9) have you tested it on 2ohms? and it will be able to drive a 2 ohm subwoofer for a long period with ofc an external Heatsink?

Also does the PCB Auto Power On Signal Detect work as a softstart? and if so what is the biggest torodial it can handel?
Click to expand...

Yes, I tested this with actual 2ohms subwoofer +/- 85VDC rails with no hiccups.

No you can't use signal detect auto power on as a softstart, you have to put a dedicated softstart for it.
 
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Deleted member 148505

solviken said:
What is the difference between your two types of 1200D amps? The topology ofc, any advantages/disadvantages between the twO?
Click to expand...
Both amps are half bridge, pre-filter feedback, self-oscillating sigma-delta modulation. JLAmp1200D is based on IRAUDAMP1, while the other one is based on IRAUDAMP9 and uses IRS2092 class-d audio driver. Both uses totem pole buffer to drive 2 pairs of mosfets.

JLAmp1200D has wider voltage range (from +/- 25 to 85V DC) and has an adjustable over current protection, mosfet switching speed can be slowed down without triggering OCP so it can use more variety of mosfets. By changing some parts it can be used for higher voltage (up to +/- 120V DC rails).

JLAudiophile-1200D has a better full range sound, lower parts count, no turn-on/off clicks pops, and has full short circuit protection. Voltage range +/-55V to 85V DC. Auto start self oscillation. Compatible only to 2 pairs IRFB4227 or equivalent spec mosfet.


solviken said:
And have you tested the amps running SMPS insted of a torodial transformer? Im thinking of using the 2kw smps from connexelectronic with 75vdc output.

Will you sell a assembeled version of the 1200D audiophile amp?
Click to expand...

Haven't tried powering JLAudiophile-1200D with SMPS. I'll be selling unassembled kits for JLAudiophile=1200D, but it may take time, still sourcing parts for it.
 
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Deleted member 148505

JLAudiophile-900D

Upcoming product: 900W Class-D Amp based on IRS2092S.

Features
Small footprint, PCB size: 2.1" x 5"
Good for low profile chassis.
Fits Coilcraft VER2923-153KL, T106-2 to T157-2 Inductors
Shutdown pin for scenarios which require shutting down the module.
Dedicated mosfet gate driver supply for low idle heat dissipation.
Minimum SMD Parts:
- 1pc SOIC16 IRS2092S
- 2pcs 0805 LEDs,
- 9pcs 100n 0805 Caps,
- 4 SOT-23 TTL Buffer transistors,
- 2pcs 0805 10k ohm resistor
 

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