In the end, I like attaching a BD237 via M3 bolt to a tapped hole, despite having to sort out the leg connections and hanging some components from the underside.
Pecking order so far:
Edd9000, R J Harker
One more........
OK, leniency time....Ramona and Kenb have slipped in under the wire
Book's now closed chaps.
Addresses from those listed - [email protected] - if you'd be so kind.
I also like the idea of bolting a device to the heat sink but that BD237 looks naff with the legs crossed over. Is it the same for the NCC220?
but that BD237 looks naff with the legs crossed over. Is it the same for the NCC220?
Naff? I thought it was an elegant dead bug.
The NCC220 has the wiring aligned for the DB237. Also, the NCC220 is through-holed while the NCC300 just has surface pads at the heat spreader.
Can you check the power consumption? I'm running 2.20V bias, resulting in 25° heat spreaders at rest. A "Kill-a-Watt" meter says my entire rack, including the two 300 converted NAP135s consumes 55w at rest and 75w playing the Ramones. It sounds terrific (without the watt meter inline), and I'm loathe to use a lot of electricity and generate a lot of heat.Nice one Alan, I'm running 2.250 bias which equates to 35°at the heat sinks after a few hours yesterday. I'll clip on two meters today and see what their doing mA wise.
Can you check the power consumption? I'm running 2.20V bias, resulting in 25° heat spreaders at rest. A "Kill-a-Watt" meter says my entire rack, including the two 300 converted NAP135s consumes 55w at rest and 75w playing the Ramones. It sounds terrific (without the watt meter inline), and I'm loathe to use a lot of electricity and generate a lot of heat.
Just been alerted to this thread via the classifieds ref the NCC220 AMPS for sale.
Question (excuse my total ignorance) - can the M130s be upgraded to this new NCC300 module? I have three sets of Avondale built 130s in a Linn Aktiv Isobarik set up.
Many thanks
The 220 is purpose-built to have the BD237 on the spreader while the 300 is designed for a 2N5551 on the PCB. It's then optional on the 300 to pull it out to the spreader, following some traces on the PCB. If you move the 2N5551, the tracks aren't crossed.
Does anybody know what a NAP300 deals with for voltages before and after regulation.
And could a NAP300 be used as a basis to achieve similar results to this project - by playing with the voltages and bias as per the recommendations in this thread.
Or am I way off .