Deaf Row!

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12-02-2019, 09:35
jandl100

Hmm, interesting, those 3116 chip amps.
I've just ordered a Breeze Audio one. £17.22 :). Be interesting to compare it to an Amptastic Mini-T.
12-02-2019, 09:40
walpurgis

Yes, it is a remarkable little amp Tony. I'm using mine all the time and all my bigger 'fancier' amps are sidelined at the moment.

I'm sure you could locate an RCA/phono switching box to provide more inputs.

If anybody else is interested, here's the Breeze Audio branded one: https://www.ebay.co.uk/itm/Silver-HI...EKJ:rk:33:pf:0

And here is the power supply I use: https://www.ebay.co.uk/itm/96W-Unive...53.m1438.l2649 This may need a UK kettle lead. I use mine on the minimum 12v setting.
12-02-2019, 09:51
spendorman

Quote:

Originally Posted by walpurgis

Yes, it is a remarkable little amp Tony. I'm using mine all the time and all my bigger 'fancier' amps are sidelined at the moment.

I'm sure you could locate an RCA/phono switching box to provide more inputs.

If anybody else is interested, here's the Breeze Audio branded one: https://www.ebay.co.uk/itm/Silver-HI...EKJ:rk:33:pf:0

And here is the power supply I use: https://www.ebay.co.uk/itm/96W-Unive...53.m1438.l2649 This may need a UK kettle lead. I use mine on the minimum 12v setting.

I have the same type power supply, it's OK, but it's power efficiency is not as good as some others, mine gets a bit warm in use, the one I prefer is a genuine Toshiba 19V laptop unit. This unit runs much cooler.
12-02-2019, 10:13
walpurgis

Going by the bench test for the amp 19v is a little higher than I'd want to use, in any case the one I bought seems just fine with it when set at 12v.

I have got a beefier 12v power supply somewhere that I may try with it.
12-02-2019, 10:24
spendorman

Quote:

Originally Posted by walpurgis

Going by the bench test for the amp 19v is a little higher than I'd want to use, in any case the one I bought seems just fine with it when set at 12v.

I have got a beefier 12v power supply somewhere that I may try with it.

From memory! the TPA3116 is OK up to 24V, I've used mine at that voltage. You won't get much power output at 12V and 8 Ohms.
12-02-2019, 10:34
jandl100

Quote:

Originally Posted by jandl100

Hmm, interesting, those 3116 chip amps.
I've just ordered a Breeze Audio one. £17.22 :). Be interesting to compare it to an Amptastic Mini-T.

I've a 15V Linear PSU going spare - would that be OK for it, Geoff?
12-02-2019, 10:40
spendorman

It's just as well to check the power supply capacitors on the TPA3116 board for voltage rating. Some boards used capacitors that were not really rated high enough.
12-02-2019, 10:57
spendorman

From Texas Instruments site

https://farm8.staticflickr.com/7811/...cfaefae8_z.jpg tpa3116 by A60man, on Flickr
12-02-2019, 14:03
walpurgis

Quote:

Originally Posted by spendorman

From memory! the TPA3116 is OK up to 24V, I've used mine at that voltage. You won't get much power output at 12V and 8 Ohms.

It's the modest heat dissipation of the small heatsink in the amp that could be an issue with higher voltages.

See the benchtest: https://www.youtube.com/watch?v=d6WkVSr_Hn8
12-02-2019, 14:04
walpurgis

Quote:

Originally Posted by jandl100

I've a 15V Linear PSU going spare - would that be OK for it, Geoff?

Should be fine. See benchtest above.

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