Hello,
I'm starting a new amplifier build based on two ICEpower 700AS1 modules for a two channel build.
Initial stages of this build were discussed in another thread because I was intending a hybrid build but through discussion this amp will not have a tube stage. So I started a thread just for this build as the hybrid no longer applies.
The ICEpower modules have been on order for a week or so but other items have come in (i.e. xlr/RCA jacks, binding posts, & Lundahl transformers) so I can start working on the build and laying everything out. Chassis will be a Hifi 2000 and should be ordered this week.
I started by laying out the back panel with the inputs and speaker outs.
Then I started a PCB for an "Input Module" which I would like some input on as I am new to PCB layout. There will be two different boards, one with Lundahl LL1545A transformers and one without. I will try both and see which one I like best.
The input board will span the back of the chassis and mount directly to the XLR jacks with some additional standoff's as well. The RCA and input select switches will be connected to the board via short wires. The XLR housing will be grounded via mechanical connection to the chassis. There are connections for an input select switch to ground pin 15 of the LL1545A when using unbalanced. And I put a spot for a X2 cap and resistor filter to use if needed to isolate signal ground from the chassis. I can connect the chassis to either side to isolate it or not. The orange traces are top layer and blue are bottom layer.
I've attached my PCB layout and the datasheet for the LL1545A with my connections I'm using labeled with arrows on the second sheet. Any input on the PCB is appreciated.
Thank you
I'm starting a new amplifier build based on two ICEpower 700AS1 modules for a two channel build.
Initial stages of this build were discussed in another thread because I was intending a hybrid build but through discussion this amp will not have a tube stage. So I started a thread just for this build as the hybrid no longer applies.
The ICEpower modules have been on order for a week or so but other items have come in (i.e. xlr/RCA jacks, binding posts, & Lundahl transformers) so I can start working on the build and laying everything out. Chassis will be a Hifi 2000 and should be ordered this week.
I started by laying out the back panel with the inputs and speaker outs.
Then I started a PCB for an "Input Module" which I would like some input on as I am new to PCB layout. There will be two different boards, one with Lundahl LL1545A transformers and one without. I will try both and see which one I like best.
The input board will span the back of the chassis and mount directly to the XLR jacks with some additional standoff's as well. The RCA and input select switches will be connected to the board via short wires. The XLR housing will be grounded via mechanical connection to the chassis. There are connections for an input select switch to ground pin 15 of the LL1545A when using unbalanced. And I put a spot for a X2 cap and resistor filter to use if needed to isolate signal ground from the chassis. I can connect the chassis to either side to isolate it or not. The orange traces are top layer and blue are bottom layer.
I've attached my PCB layout and the datasheet for the LL1545A with my connections I'm using labeled with arrows on the second sheet. Any input on the PCB is appreciated.
Thank you