I picked up a rather large dual output Magnatek 48 volt 13 amp per output switching supply at RaElco this morning. It's brand new never used and the 50 dollar price seemed good for a supply with dua modules/outputs. Pics below.
Anyone happen to know if that power connector shown below is an AMP Powerlock? If not what the heck is it?
Mark
Anyone happen to know if that power connector shown below is an AMP Powerlock? If not what the heck is it?
Mark
http://www.semiconductorstore.com/pdf/MG SERIES.pdf
Here be the data sheet
I've got a build around a PBTL version of the TAS5630 under way too. I'm just waiting for the chips to arrive, which seem to be in short supply
Here be the data sheet
I've got a build around a PBTL version of the TAS5630 under way too. I'm just waiting for the chips to arrive, which seem to be in short supply
Yes, It is a AMP connector. It's show's in the spec as J1 at the bottom of page 3 in diagram.
I think you'll find it here:
http://www.tycoelectronics.com/catalog/bin/TE.Connect?C=1&M=BYPN&TCPN=556883-2&RQPN=556883-2
or
http://www.tycoelectronics.com/catalog/bin/TE.Connect?C=1&M=BYPN&TCPN=556880-2&RQPN=556880-2
or
http://www.tycoelectronics.com/catalog/menu/en/17724?BML=10576,17560,17536,17533
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5th, You might call or e-mail ClassD and see if they can spare you one chip. It is a brand new product.
Mr. McGee, Thanks for posting those links!! I thought it was some sort of AMP connector but only had time to breeze though the Mouser catalog and didn't see anything in there. Now just got to find out who has them...
Edit: Just ordered two of them and the contacts from Mouser.
Mark
Mr. McGee, Thanks for posting those links!! I thought it was some sort of AMP connector but only had time to breeze though the Mouser catalog and didn't see anything in there. Now just got to find out who has them...
Edit: Just ordered two of them and the contacts from Mouser.
Mark
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Thanks for the suggestion. Farnell did have some in stock, but I was busy with another project at the time, so didn't think to buy any. A few days later I went to buy and boom, none there!
I'm apparently going to get 2 of them as samples from TI by the 20th of october, so I'll see how that goes. I've also got 2 on back order with Farnell.
The price for that SMPS seems too good to be true
Well, Ra Elco is a surplus place and this power supply was a one up thing. They have many other supplies there too but I think this was the only 48 volt one they had. They also have alot of new parts and such and just about the largest assortment of 1% tolerance resistors I've ever seen anywhere on the planet.
Mark
Mark
Hello all! This is Tom from Class D Audio (Class D Audio, We Manufacture Class D Audio Equipment). Mark Allen asked if I would join in this forum and answer questions about our class C audio amplifiers. I was a little hesitant as I didn’t know if it is appropriate to participate in this forum as it is DIY and I don’t want anyone to get the impression that I would use this forum to promote or try to market our products here. I keep very busy with new designs we’re working on now such as the new SMPS for these amps and a few other products, so please don’t get angry if I’m not able to respond right away to questions. You can always contact me directly for a faster response. Right now, I will read through the threads here and provide a few answers.
As to... the T.I. data sheet says that this chip also has a pin for Clip Indicator and I wonder why they did not bring this out to at least a tie point??? Answer... T.I. has (or had) 2 different chips, one 64 pin chip that has the clip feature, and a 44 pin chip we use. The 44 pin chip does not have the clip feature. It seems that they either have decided not to go forward with the 64 pin chip, or will not have it available for sale or market any time soon. In fact, as many of you know, the 44 pin chip is almost impossible to get (I think we're the only ones with this chip now). The T.I. site says 20 week wait for these chips. This doesn't mean they will have them in stock in 20 weeks, but that you have to order them and wait 20 weeks to get them.
Yes, these are Class D Audio amplifiers. The amplifier discussed in this forum used the Texas Instruments TAS5630 Class D audio chip. Our other amplifiers use the International Rectifier IRS2092 Class D driver chips.
We are not affiliated with the company in the UK. As for the sound quality of our amps, you can read a few reviews on our website. I am happy to say that so far, after about 400 amps being sold so far around the world, everyone loves them! I've had several customers already sell their mega multi-thousand dollar high-end amps after purchasing and listening to ours. I think our amps offer the best bang for the buck in audio right now. Our goal... make the best products we can, and offer them for a price people can afford.
Do you make any more modestly sized amplifiers (ie <25W?).
Also, the porno black background, and all caps make your website a bit hard to browse.
dave
Try this mirror site, appears to be the same person, same gear but different look (white background).
http://classdaudio.net/
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Most of our current model class D amplifiers are listed on the website at classdaudio.com We do also have an amp available that runs at 25V, and puts out 25W X 2 into 8 Ohms, and 100W into 8 Ohm bridged. It's not listed in the website as the price is about the same as our other amps... same configuration, and I don't think anyone wants to pay so much for a low power amp... unless it's superb sound quality they are after. I think you can find lower power amps on eBay for a good price. Yes, we are working on a new updated website right now... should be finished in about a week, and much easier to browse. We also have the website at Class D Audio which is much easier for you to see, but we don't have all products listed there yet. The .net is our amazon.com store.
What has appeared to be an approximate generalization over the last couple years is that the potential quality of an amplifier is inversly proportional to its output power, so for the same price i'd bet the little amp sounds better than the big amp.
dave
If you look at the TAS5630 it quickly becomes apparent that the individual outputs are not all that powerful.
For example each single ended output of the TAS5630 will deliver about 10-15 watts into an 8 ohm load, whilst keeping distortion very low.
Of course you get 30/60 watts into 4 and 2 ohm loads.
Bridge all 4 channels together and you're up to ~100/200/400 watts into 8/4/2 ohms.
I doubt bridging the amps would result in a drop in quality. In fact bridging allows you to make use of the BD mode on the chips, and from the simple description I've read of it, it could possibly be audibly superior.
So in reality you've just got 4 low power high quality amps all working together.
You can also run the single rail needed at less then 50 volts for lower power output. I believe it'll shut down below 20 volts DC although I'd have to check the T.I. data to be sure there. I can certainly attest at how good the T.I. board sounds although it very definitely needs about an hour warm up time. If you drive it hard for long periods a small computer fan stuck to the heatsink is all you'll ever need in terms of cooling. The chip can take a real beating and shuts down at 100 deg. c according to the TI lit. But over the years my experience with power type chips is that keeping them cool affords much longer life span. I don't see that being any different here.
Mark
Mark
Hi Tom, Welcome and thanks for joining in and helping out.
Looking forward to trying your amps.
Cheers,
Thank you. Just so everyone knows... we also offer a 7 day money back guarantee, so if anyone wants to try one out, but is unsure, you can feel safe knowing if it is not what we say it is, or if you're not happy with it for any other reason, just return it for a full refund. As far as warranty, it's a standard 1 year, but if anyone ever has a problem, just let me know and we'll take care of it right away. We are a small company, and in order to grow, we rely on repeat customers and referrals. I don't want to sound like an advertisement here... just want everyone to know a little more about who we are and how we conduct business.
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