Yes one module price. Ready made module to the last detail, calibrated, tested, with packaging.
Mundorf, Nichicon, Vishay, Bourns, Semelab parts on PCB. 2 mm FR4 PCB metalized to 110 um thickness, fixation parts included.
88 € for one channel, 176 for both, top quality parts, professionally assembled PCB, experienced designer, ca. 350 € to complete the whole amp. The SQ is in the many (ten) thousand € top league.😱 This is the real power of the diy community. Congratulations Lazy Cat! 
egra
egra
Hi Andrej,
An SMPS it will be 🙂
When looking for an SMPS I came across those of AudioPower.
The DPS-500/S-64 looks good, here's the datasheet, is it a nice partner for "The First One" ?
In the wire amp thread there has been done some measurements on the DPS-600.
Regards,
Danny
An SMPS it will be 🙂
When looking for an SMPS I came across those of AudioPower.
The DPS-500/S-64 looks good, here's the datasheet, is it a nice partner for "The First One" ?
In the wire amp thread there has been done some measurements on the DPS-600.
Regards,
Danny
Hi Andrej,
Thx, I'll try them 🙂
What heatsinks are required for the First One with 3-4 ohm speakers ?
Regards,
Danny
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Hi Danny
DPS-500/S-64 really looks like the right partner for the First One. Since it has regulated voltages it could assure even more output power/headroom than SMPS1200A400 I use here. Namely SMPS1200 is unregulated and gives +/-60 V on my mains and goes down to 58,5 V when fully loaded on 4 Ohms. DPS-500/S-64 would remain at +/-63 V ensuring very good dynamics and low ripple, if it has sufficient current capability. I don't have any experience with it, but it would be nice if someone would test it with the First One.
P.S. I just looked to datasheet and it is OK, 10 A steady output current with repetitive peaks to 16 A.
DPS-500/S-64 really looks like the right partner for the First One. Since it has regulated voltages it could assure even more output power/headroom than SMPS1200A400 I use here. Namely SMPS1200 is unregulated and gives +/-60 V on my mains and goes down to 58,5 V when fully loaded on 4 Ohms. DPS-500/S-64 would remain at +/-63 V ensuring very good dynamics and low ripple, if it has sufficient current capability. I don't have any experience with it, but it would be nice if someone would test it with the First One.
P.S. I just looked to datasheet and it is OK, 10 A steady output current with repetitive peaks to 16 A.
I recommend any heatsink having 0,5 K/W or even lower. Idle dissipation of the First One is 30 W at +/-63 V, plus audio power dissipation easily adding extra 50-70 W, so 100 W all together to dissipate. 100 W * 0,5 K/W=50 K added to room temperature resulting in 75 C heatsink temperature. At that point silicon die in output transistor is around 100 C and that is somehow at max acceptability.
Look to Fischer Elektronik web page, model SK 157 or similar. 😉
I still have a Hifi2000 03/400 case waiting for a nice amp like the First One.
Thermal resistance of the 03/400 is 0.31, so that's more than OK. 🙂
Thermal resistance of the 03/400 is 0.31, so that's more than OK. 🙂
Hi LC,
many thanks for what you said, about the DPS-500, in practice it is the reality of the facts.
I can only offer the version DPS-500/DA at + /-52V. for other versions, buy on the shop AudioPower, as many already know, I certainly agreements but is not managed by me.
Congratulations for the excellent design and engineering of the PCB.
Regards
many thanks for what you said, about the DPS-500, in practice it is the reality of the facts.
I can only offer the version DPS-500/DA at + /-52V. for other versions, buy on the shop AudioPower, as many already know, I certainly agreements but is not managed by me.
Congratulations for the excellent design and engineering of the PCB.
Regards
Hi LC! Looks like a nice amp!
I have a coldamp sps80 smps (ColdAmp - SPS80: >800W Hi-end AC/DC audio switching power supply), would that be a good match for these amps? Its regulated +/-60V, 800W, 1300W peak.
I have a coldamp sps80 smps (ColdAmp - SPS80: >800W Hi-end AC/DC audio switching power supply), would that be a good match for these amps? Its regulated +/-60V, 800W, 1300W peak.
88 € for one channel, 176 for both, top quality parts, professionally assembled PCB, experienced designer, ca. 350 € to complete the whole amp. The SQ is in the many (ten) thousand € top league.😱 This is the real power of the diy community. Congratulations Lazy Cat!
egra
Thanks egra
Amazing sound quality of this little fellow and bringing it to the DIY community is the one and the only thing why I started it all.
Regards, Lazy Cat
Congratulations Lazy Cat.
A couple of questions:
Does the module need a "re-regulation" if one chooses a lower PS voltage?
Is this a limited time offer for the good mates here at DIY fora or do you plan an extended offer? In other words, do we have to hurry?
Excuses for being so direct...
Best wishes,
M.
A couple of questions:
Does the module need a "re-regulation" if one chooses a lower PS voltage?
Is this a limited time offer for the good mates here at DIY fora or do you plan an extended offer? In other words, do we have to hurry?
Excuses for being so direct...
Best wishes,
M.
Lead time is very dependent to Semelab's lead time, app. 12-18 weeks, again.
But there's no other way if we want to proceed with the project.
You can consider it as a pre-order to form orders waiting list, so this list will be taken into account who will get it first.
All informations needed, also regarding delivery times, will be regularly posted in post #1.
🙂