Low Cost Linear PSU for Temple Audio Monoblocks?

[Alan D]

Have sent you a PM.

Regards,
Alan.

[RothwellAudio]

70W from a 16V power supply???? It doesn't matter how many amps it will deliver, you won't get 70W from a single 16V power supply.

So what am I missing?

[Firebottle]

It's probably a BTL (bridge tied load) scenario Andrew, plus max rated output into 4 ohms, for both channels ?

[Alp]

In the end, I decided that Linear PSUs were not going to do it - at least affordably - so I have gone back to a battery. A LiFePO4 - or Lithium Iron Phosphate to its friends - not to be confused with LiPo, as Lithium Polymer is sometimes confusingly written. They are used for high starting current applications like golf carts and motorbikes. Compared to Lithium Polymers, they are much less susceptible to causing fires. Compared to Lead Acid batteries they hold the charge much longer, can deliver higher instantaneous peaks, have a flat discharge profile, have a higher depth of discharge, last much longer (1400 cycles) and are much lighter. The downside is they are much more expensive (~4x) than equivalent Lead Acid batteries and ~2x more than the equivalent Lithium Polymers (a 23500 mAH Li Polymer is only roughly equivalent to 7AH @ 12V).

I am using a 16 AH 12V (actually 12.8V) Tracer battery pack. It is in a nice black and grey package so does not look out of place in a domestic setting. It has a charge-level meter and built-in protection for short circuit, over current , over charging, deep discharge and over temperature. It came with a dedicated LiFePO4 charger (essential).

The sound is excellent and I have never heard my system give such a broad and deep expanse of sound. Due to the lower voltage (12.8V vs. 16V), I had to use the red gain setting on the Temple Monoblocs rather than the blue. It also sounds great powering my Caiman SEG DAC.