Here I have a completed Audio Sector LM4780 kit.
It is in Parallel configuration for driving 4Ω loads.
I would venture a guess that it is about 100W/ch in this configuration.
I have used the "Snubberized" power supply configuration with 20kuF of capacitance per rail, Panasonic TS-UP Caps.
The front is solid Hickory, the sides are made from large heatsinks.
The bottom is 1/8" aluminum diamond plate which creates an evenly spaced gap all around the bottom to aid in ventilation.
The top is made from clear polycarbonate also spaced up to aid in ventilation.
The rear is made form 1/8" ribbed aluminum with IEC module, RCA inputs & dual binding posts.
The feet are attached with vibration dampening grommet mounts.
This is a very clean and symmetrical installation that screamed for a nice clear top.
I will include an IEC power cable.
I am asking $200 +S&H for the amp.
I spent many hours building this and many more enjoying it so I would like it to be shipped insured if there are no objections (I'll cover the insurance).
Paypal is preferred.
It is in Parallel configuration for driving 4Ω loads.
I would venture a guess that it is about 100W/ch in this configuration.
I have used the "Snubberized" power supply configuration with 20kuF of capacitance per rail, Panasonic TS-UP Caps.
The front is solid Hickory, the sides are made from large heatsinks.
The bottom is 1/8" aluminum diamond plate which creates an evenly spaced gap all around the bottom to aid in ventilation.
The top is made from clear polycarbonate also spaced up to aid in ventilation.
The rear is made form 1/8" ribbed aluminum with IEC module, RCA inputs & dual binding posts.
The feet are attached with vibration dampening grommet mounts.
This is a very clean and symmetrical installation that screamed for a nice clear top.
I will include an IEC power cable.
I am asking $200 +S&H for the amp.
I spent many hours building this and many more enjoying it so I would like it to be shipped insured if there are no objections (I'll cover the insurance).
Paypal is preferred.
Attachments
Now Including A Volume Control
New Price $210 +S&H
I am now including a passive volume control.
It uses an 100k Alps Blue Velvet I picked up from PartsConneXion, gold plated RCA's & Silver/Teflon wiring.
All good quality parts, the chassis is made from vinyl clad aluminum and hickory cheek pieces to match the amp.
I'll also throw in a 1.5 foot interconnect.
New Price $210 +S&H
I am now including a passive volume control.
It uses an 100k Alps Blue Velvet I picked up from PartsConneXion, gold plated RCA's & Silver/Teflon wiring.
All good quality parts, the chassis is made from vinyl clad aluminum and hickory cheek pieces to match the amp.
I'll also throw in a 1.5 foot interconnect.
Attachments
Last edited:
“Overture” - LM4780 Audio Sector chip amp
I had completed these modules some years back and after an inquiry from a member of another forum I put the amp together. I called the power amp “Overture”
Follow the link for more details;- retro-thermionic: "Overture" - LM4780 chip power amp
I had completed these modules some years back and after an inquiry from a member of another forum I put the amp together. I called the power amp “Overture”
Follow the link for more details;- retro-thermionic: "Overture" - LM4780 chip power amp
Attachments
Last edited:
- Status
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