Description of Item:
This is the premier Phase Linear PL 400 LED Lightboard upgrade kit on the web. It
is a professional-class upgrade product, meticulously engineered to look and perform
better than the original.
Do you own a Phase Linear 400 Series 1 Amplifier (the one with the 2 big VU meters)?
It is a great amplifier but maintaining the original incandescent meter light bulbs
that frequently burn out can be a real nuisance, Here is your opportunity to replace
the original light board with a high-quality, long-life LED powered replacement.
This is a brand new, upgrade blank PCB kit to replace the original incandescent
light bulb board (PL18A) with a long life, low power, LED based board assembly.
This kit includes the bare board and all electronic components as shown in the photo
above with the link to the assembly instructions and documentation. The components
in the kit will be pre-formed for you (as shown in the photo above).The components
you receive in the kit may differ slightly in appearance from those above due to
parts manufacturer changes.
You get what you see in the picture above:
- 1 - Brand new upgrade blank PCB to replace the original PL18A incandescent light
bulb board
- 8 - Ultra-bright Water Clear Blue, Diffused Blue or Water Clear White LEDs (specify
your choice when you order)
- 8 - 150 ohm LED current balancing resistors
- 1 - Bridge rectifier
- 2 - Filter capacitors
- 2 - 13K ohm VU meter limiting resistors
- 2 - Diodes to rectify the signal going to the VU meters
- 2 - Red VU meter connection leads with integral 1/4" ring lug and heat shrink
tubing
- 2 - Black VU meter connection leads with integral 1/4" ring lug and heat shrink
tubing
- 4 - 6-32 hex nuts
- 4 - Tyraps to neaten up the wiring harness
- 1 - Wooden spacer to properly space the LEDs while soldering
Detailed photographs, assembly parts list and "crystal clear" assembly and installation
instructions are located at this link below:
There are 4 ultra-bright, wide dispersion Blue (or White) LEDs for each meter providing
a consistent wash of light for meter illumination. You can choose either (water
clear) white or blue (water clear or diffused) LEDs for your application depending
on which LEDs you populate (water clear blue LED part numbers are specified in the
parts list but you can request equivalent white LEDs if that is what you prefer).
The LEDs are powered with a forward current of 18mA to provide bright, pleasing
illumination while reducing the power requirements by over 80% from the original
board. A current control resistor is provided for each LED allowing you to tweak
with the illumination level if desired.
A bridge rectifier is located in the center of the board surrounded on the left
and right with 2 filter capacitors. This combination provides a smooth DC source
for the LEDs. The cool running LEDs eliminate the heat associated with the original
equipment incandescent bulbs and last indefinitely. No more replacing those hard
to find bulbs and no more discoloration of the meter plastic due to the excessive
heat from the incandescent bulbs.
The printed circuit board is a high quality FR-4 based, epoxy-glass PCB with HASL
tin/lead plating on the solder pad areas replacing the cheap original single sided
PL-18A PCB. The replacement PCB is 0.062 inch thick double sided circuit board with
plated through holes and white epoxy silkscreen legending on the component side
and green solder mask on both sides. It is a direct drop in for the original board
size, using the original mounting hardware to secure it in the amplifier. This replacement
board includes holes to secure and strain relieve the amplifier wire connections
to the LED Light board. This feature can be seen pictured in the photos. The original
PL18A wire attachment points would often separate from the PCB, ruining the board.
This upgrade kit is for skilled technicians. While building and installation is
not a difficult procedure, the installer should be familiar and comfortable with
working on electronic equipment and using a soldering station and associated tools.
Ensure good control of soldering iron temperature, not exceeding 600 degrees F,
so the LED Light Board is not ruined by excessive heat. If you are not familiar
with working on electronic equipment or do not possess the proper equipment, it
is recommended that you take your amplifier to a service technician that can perform
the LED Light Board Upgrade and installation for you. Bare board only kits as well
as assembled and tested versions of this LED light board are available as well on
the White Oak eStore.
Photos of the finished project are shown below (installed in chassis, front view
with BLUE water clear LEDs, front view with BLUE diffused LEDs, front view with
WHITE water clear LEDs, component side of the finished assembly, solder side of
the finished assembly).
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This kit is sold AS-NEW with no returns (due to potential damage to the circuit
board once assembly has begun).
Ship From Zip Code: 01564
Shipping Weight:4 oz.
White Oak Audio will pay USPS first class mail shipping charges (but not insurance)
within the continental 48 US states. If you require other than first class mail,
buyer will be responsible for shipping charges by method selected on the shipping
weight stated above. If you do not pay for shipping insurance, delivery will be
made totally at buyer's risk for loss and damage.
Your purchase will be professionally and neatly packaged for shipment within a sturdy,
1-1/2" diameter mailing tube. International orders are also welcome, shipping charges
are not included to international destinations (contact us for a shipping quote
to your destination).
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