[emoji106] go for a 2X 0-15 75VA teddy and regulate it to 19V using 2X LM317/377 rig for low noise regulation...
While I've not used that particular model, looking at the photo, that certainly appears to be the case. Note that the smaller models do not include cooling fans, so ventilation of the total chassis is essential.
My own build happened to be from a recycled Bogen PA amp chassis with lots of breathing space and a fully ventilated u-shaped cover. It's been powered up 24/7 for at least a year, and gets between 6 -8hrs a day playing at background levels.
ACA #2
Don't know if anyone else saw this, but Nelson has announced on First Watt
that ACA #2 is in the pipeline. He wrote that it will be released at Burning Amp on November 12.
Don't know if anyone else saw this, but Nelson has announced on First Watt
that ACA #2 is in the pipeline. He wrote that it will be released at Burning Amp on November 12.
ACA2
Papa won me on ACA already. in a multiamped system that little amp is absolutely the best value. He made a reference to a tube-like sound quality of ACA2 in another thread and posted the basic specs. the gain is low (~11dB only) but I am half set to try it out if it will operate off of 24V PS (I already have one ACA sharing PS with F5). wait and see what the master says
.
p.s. I have a feeling that that little amp is a similar experience like LXMini speakers were for Linkwitz; kind of a small scale side effort and then it beats all expectations and one gets to learn something from it.
Papa won me on ACA already. in a multiamped system that little amp is absolutely the best value. He made a reference to a tube-like sound quality of ACA2 in another thread and posted the basic specs. the gain is low (~11dB only) but I am half set to try it out if it will operate off of 24V PS (I already have one ACA sharing PS with F5). wait and see what the master says
.p.s. I have a feeling that that little amp is a similar experience like LXMini speakers were for Linkwitz; kind of a small scale side effort and then it beats all expectations and one gets to learn something from it.
I have a matched pair of 2SK170 GR. I did a measurement with a 9v battery. V+ to drain and 100 ohm resistor across the gate and source legs to battery V-. Voltmeter read .4V. So I would guess 4ma idss. I read that the ACA needs the B grade 6 - 12 idss. Will the 4 idss work or should I source a different set?
Depends on what bias you require.
2.2k was the original recommended. I think I got 1.35A with 2.2k. I posted the results earlier.
If you want lower than 1.35A maybe 4.7K.