Hypex UcD-XXXst/ad ??

[T-Bird]

Hi.

Can't really see the logic behind the move either, but ain't complaining, no sir. In here the topic will stay on the first page longer .

The primary topic was the modules (or the difference between xxx-st and xxx-ad to be precise) themselves, not my particular application. That was only to point out the MI/PA application opposed to the Hi-Fi approach. And whether the added cost of the upgrades would be beneficial in MI applications. For me an amp is an amp and I will use these active cabs for bass too.

And now back to the topic .

I couldn't find any info what so ever anywhere why would I need to purchase the ad version, and even the guy behind the counter wasn't really sure, so 400€ later (with the transformer) here they are: the Hypex st modules .

The regular kazoo is for the size comparison purpose, ain't these modules cute.
Top left is the UcD400st, below UcD180st, and top right the Supply-st.

On the Hypex website and everywhere else for that matter, the size is a bit vague without anything to compare them with. Sure the TO220 casing gives some clues, but still I was quite amazed about the size. In the future, if these work as advertized, I'll suggest any amp with a blown power amp to be retrofitted with these if the rail voltages are compatible. The price of the modules is after all about 1.5-2 hours of troubleshooting and repair. And if one's really lucky, the amp output will be doubled.

The rail voltages, . Made the stupidest, stupidest mistake there. For some reason I was under the impression that both the modules would use the same voltages (I'd design them that way), some paragraphs could even be interpreted that way, but nope. I don't think that I'll be able to use both modules with the same supply without lowering the rails 15V for the 180st . Probably not worth it.

The 400st works with 45-63V (Overvoltage protection 68V) and the 180st 30-45V (Overvoltage protection 52V).

The toroid itself is HUGE, at least compared with the modules, but still well within reason for the amp output power. The 92% efficiency does have its benefits for sure .

I'll keep You all updated as I make the first test runs, probably by the end of the week. Couldn't get the 18-Sound horn I would've liked to use in the prototype, so I have to improvize on that.

Regards
Sam

 

[Passinwind]

OOPS!!!

Shoot well I was talking bass!

I'm still quite interested in using the 700 watt module for a DIY bass amp if and when Hypex have an SMPS available to the DIY community. I've heard one of the the Hevos amps that uses a Hypex module, and it sounded great IMHO.

Sam: please do keep us updated, regardless of whatever forum this ends up in. Which 18Sound horn are you looking for BTW?

 

[T-Bird]

Hi, Charlie.

I was looking for the cheapest, XD125 1" plastic one (HD125+XT120). Alternatively I would've like to purchase an aluminium horn (XT1086) for the 1" Beyma driver with 40mm mounting thread I have, but all they had in stock was the standard flange types. I can make the adapter if necessary, but as I have only one of those drivers I'd rather not at this point .

Do You have any experience about the Eminence cheapies, APT150 & APT80 BTW?

The Beyma driver came off from an old 15"XT co-ax so the horn is "a bit" hard to mount to a baffle, but for the prototype it will have to do. Pro SR stuff is quite hard to find on the shelf, but any and all Hi-Fi products are readily available. They said that they would have the horn within a couple of weeks, we'll see...

When I asked about it, the salesman also assured me that the SMPS from Hypex is "coming soon" but couldn't tell when that soon might be .

As I said earlier, I'm not that thrilled about SMPS. If the television and other "low-mid wattage" applications are any indication, the supply caps will need replacing every couple of years, at least with the designs used today. With multi layer PCBs and the lead free solder, that can only be done once with ordinary equipment.

For me halving the transformer size is enough weight reduction. For now at least.

That UcD180 paired with some 10" or 12" neo driver would make quite an affordable and light practise combo with a small (tube) pre on the front .

Regards
Sam

 

[greenboy]

Too bad, Pony-Trekker {I can say this since I'm partly Finnish via the Minnesota Iron Range and Oregon logging camps, right?;} - right now at Loudpeakersplus you can get the cheap 18 Sound flare with driver for peanuts.

[Invalid or Expired Link Removed]

 

[Passinwind]

Hi, Charlie.

I was looking for the cheapest, XD125 1" plastic one (HD125+XT120). Alternatively I would've like to purchase an aluminium horn (XT1086) for the 1" Beyma driver with 40mm mounting thread I have, but all they had in stock was the standard flange types. I can make the adapter if necessary, but as I have only one of those drivers I'd rather not at this point .

I know this is far from local for you, but here's a decent deal on an 18Sound XD120: [Invalid or Expired Link Removed]

I have a pair of the XD1086, loaded with BMS 4552ND drivers. I haven't used 'em much, but so far I'm very happy with what I'm hearing.

I have not had particularly good results with any Eminence compression drivers, but I have no experience with the ones you mentioned.

I know what you mean about repairing SMPS, or lots of modern gear in general for that matter. I've always been able to repair my own amps in the past, but I think that day may well be gone. But sonically, the B&O-based module I gig with hangs with any "big iron" amp I've tried, strictly speaking for my own needs and preferences of course.

Edit: looks like greenboy snaked me by keeping his message short...

 

[greenboy]

The APT50/APT80 is not bad for mini-format (ie Fosterx) sized HF. I plan on using it soon in a bas cab, crossed over at 6.3K Hz 18 BW assymetric, but it should be fine down to maybe 3.5 Kz.

 

[drbabu2607]

Hi there...maybe some humble addition to this thread...I have been using since about a year the HEVOS 800D amp combined with the HEVOS powerset enclosures (2x10+T) +(2x10) and it sounds prett massive, can handle my low B without any issues. The 800D is a 1U rackspace amp (www.hevos.nl) containing two class D (Hypex) poweramps (2 x UcD400); I can say i have been extremely pleased with the quality of the amp and the sound coming out of this relatively very light weight powerset enclosure set. Further specs:

• Type: tube pre-amp, MOSFET class-D power amp
• Height: 1 U
• Weight: 9 kgs (about 19lbs)
• Power: 2x400 Watts @ 4 Ohms, 2x500 Watts @ 2 Ohms, 1000 Watts @ 4 Ohms bridged
• Distortion: < 0.1% THD at 400 Watts
• Damping: > 2000 at 100 Hz into 4 Ohms
• Tube: 12AX7 (1x)
• Input: 1 passive, 1 active (switchable)
• Tone control: active 5 band: 60, 250, 800, 2500 and 8000 Hz +/-12 dB
• Protection: short circuit, DC current at output, mismatch and open end; clip indicator; thermal protection on power supply transformer; delayed power switch; clip indicator at the input
• Misc.: mute out; mixable effect loop with foot switch; balanced line-out with pre/post switch; headphone output; ground lift; DC tension filament tube
• Output: 2x Speakon, balanced line-out, mute out, send-return, foot switch, headphone out
• Components: dust proof pots, Neutrik connectors

HEVOS material will have to be ordered from Holland directly. As a Dutchman ("lost" in Texas) i can give y'all some guidance if interested in obtaining HEVOS stuff. The staff (Rob de Vos/Ben Heil) is very knowlagable and helpful)

Babu

 

[T-Bird]

Hi.

Thanks guys, that loudspeakerplus link sounds really tempting, but as You said, a bit far from local for me .
Hopefully someone who lives nearer will benefit from that link.

I have a pair of ancient long-horns somewhere BTW, bought them from a crazy 70's horn-loaded PA. As a matter of a fact that was the exact same PA that I played my first ever gig with, back in 86'. Those horns are really big though, 60cm wide IIRC so perhaps not too suitable for, well, anythig anymore. Sure do look cool though.

Babu, any addition is certainly welcome, there's not too many class-D DIY threads or any other class-D power amp threads for that matter. That Hevos link I have to check out, thanks.

Regards
Sam

 

[T-Bird]

Hi.

I've been busy doing other things and also thought that what the heck, I might as well wait that Eighteen Sound shipment to arrive so I can have a few alternatives to try out.

Or so I thought. Those "#¤!"#¤% damn !"#!½"# didn't even order any, after driving 60km there I was told that there was probably no shipment, because...uh,well....You see...we DIDN'T order anything from them. Just great.

I should've called, sure, but in these parts of the world, mans word still carries some weight.

As it turned out they weren't the Finnish distributor even they make that impression on their web-site, so I shot some e-mail to the real deal. Let's see how he reacts, the web "site" wasn't too promising.

It wasn't all in vain though, on the next shop there was a 70&#8364; scratch and dent Garmin Nuvi 200 GPS to replace my "stone & stick" model, and a 99&#8364; 1T external HDD to store my....movies and stuff in .

I will keep You all posted when I get the damn horns .

Regards
Sam

 

[stanknuckle]

Drbabu2607, is there any chance you could photograph the inside of the HEVOS 800 amp please? I really need to see how they've squeezed those components in. I take it that there are no toroidal transformers in there??
John