bench psu problem

[maggotbrain]

Greetings.

A few months ago I bought a 1-20V 0-5A slim bench power supply to replace the psu which came with the beresford tc7510 dac. Its made a huge difference. Much cleaner and clearer sounding, plus the hum from the right channel vanished. Problem is the bass seems a tad light. Im guessing its becuase i can only extract 100mah from this psu not the required 500mah. I can set the voltage but cant set the current. I think the current is determined & delivered via an auto transformer. Anyway, I cant get 500mah. Any ideas?

www.maplin.co.uk/Module.aspx?ModuleNo=219129&C=Froogle&U=219129&T=Product&MA=1-20V%200-5A%20Slim%20Bench%20Power%20Supply%20with%20LCD%20Screen%20(1-20V%200-5A%20Bench%20PSU)

Thanks

[Deleted]

maggotbrain
Have you had a good read of the user's manual ?
The specs say 1-20V at 0-5Amps.
You should be able to set a user defined maximum current at, for example 1 Amp, or as high as 5A, depending on the actual output voltage setting. Perhaps the bass previously was artificial, and not accurate ?

SandyK.

[leo]

The Beresford uses a couple of high capacitance caps on the input before its internal regulation, depending what output the bench psu uses it may not go well with it

Also added colouration especially from smps's can seem like more bass

[maggotbrain]

Hello and my sincerest thanks. I've spent the last hour trying to sort this out. I've read & re-read the instructions. I've also checked technical defintions (online) to ensure that i've followed the instructions precisely. Its frying my maggots and they are not happy. Even the bespectacled bearded gurus at maplin could not help. Im now drinking beer and listening to musak style jazz in an attempt to stay smooth. I think this psu is defective. It sounds GREAT, but 100mah is way short. Stan Beresford advised the current should be 500mah.

Im not happy, but strangely am happy (damm musak). Im going to take this psu back to maplin and engage in warfare till this is resolved.

Perhaps the bass sounds light as its much more cleaner and clearer i.e less boomy?

My thanks again.

Gavin.