TPA3110 and TPS3116 amps

rhing · « **Reply #1340 on:** 9 Sep 2015, 02:27 am »

Quote from: Trikster on 8 Sep 2015, 04:22 am

Where can I find more info on the Weiner amp?

If you read a matt_garman's posts a few posts up, you'll find a link to the diyAudio.com thread on the Wiener group buy; however, the group buy is now closed by the amp's designer.

Quote from: Markvdv on 8 Sep 2015, 09:26 am

Rhing have you ever connected the Gmarsh Wiener to speakers that require a little higher inputsignal to the ampboard ?
If you have those kind of speakers could you compare DC on speaker output Gmarsh Wiener to DC produced by Dugs mono boards or Sure3116 or any other tpa ampboard you have? I am curious what you'll see on your meter. I know what I see, I know I need to increase gainsetting Wiener to avoid higher inputlevels as a fix to keep DC output within what I would call hifi limits. Your Dug monoboards probably have the seperate avcc/pvcc setup too, so if your Dugs have equal DC on output as Wiener and Sure3116 has only a fraction of that amount like even YJblue, it might be avcc split connection causing the high dclevels playing music when inputsignal gets higher.

(outputlevel matched with sinewave inputsignal, audiobah left output has -8mV DC, gmarsh Wiener same setting left output -218mV DC)

I only have my Klipsch Forte II's and a pair of Fostex FX-120 bass reflex monitors. Both speaker systems are very efficient, and I use an Audio Research LS7 tube line stage, which also has gain, on top of that. Basically, I am not driving the Wiener TPA3118 amp very hard at all. The only other speakers I've used with the Wiener amp are another friend's pair of Klipsch Forte II's and another friend's pair of Altex Lansing Model 19's.

Quote from: t-head on 8 Sep 2015, 08:52 pm

Rhing, What is the model number of your input transformers? Thanks.

CineMag CMLI-15/15B 15kohm:15kohm line level input transformers. Another comparable input transformer would be the Jensen JT-11P 10kohm:10kohm line level input transformers. The CineMags are usually made to order, while you can get the Jensen transformers from a number of retailers on the Web.

Odal3 · « **Reply #1341 on:** 9 Sep 2015, 02:35 am »

Quote

Belden 8402 interconnect cables with Switchcraft 3502AAU RCA connectors
Western Electric AIW 16ga speaker cables

Need to try this. Found some additional info on the WE cables here: http://www.audiocircle.com/index.php?topic=134710.0

happyrabbit · « **Reply #1342 on:** 9 Sep 2015, 03:48 am »

RHING !

Which transformers do you prefer ? I have used the Jensen Models but not the Cinemag.

Thanks

Dwight

rhing · « **Reply #1343 on:** 9 Sep 2015, 11:29 am »

Quote from: happyrabbit on 9 Sep 2015, 03:48 am

RHING !

Which transformers do you prefer ? I have used the Jensen Models but not the Cinemag.

Thanks

Dwight

I don't have any preference. I just chose the CineMags, because I've never used them before and I wanted to check them out. I've used many Jensen direct boxes in pro audio applications, and they are great. I don't think you can go wrong with either make.

matt_garman lent me a pair of Edcor 15kohm:15kohm line level input transformers, and even though they did improve the overall sound quality of the TPA31xx amps I tried them with, the CineMags were more transparent. To my ears, they are worth the extra money.

Markvdv · « **Reply #1344 on:** 9 Sep 2015, 12:21 pm »

Fostex is low efficient enough!! With Vifa's same efficiency the levels were found here.

vewiu · « **Reply #1345 on:** 13 Sep 2015, 03:08 pm »

Hi guys!
I've read this topic and I still have a couple of questions. I hope it will help others too. I'm sorry if they're too nooby

I saw not the YJ blueblackboard but different one, cheaper and sold by many on ebay, but the only difference I can notice is the red diode. Do you know something about it? Is it just fake?
Is the new Sure tpa3116 (2x15W) amp ok with 4ohm speakers (and 12V)? The chip is ok, but I don't know how the board itself, I couldn't find the minimal load.
I plan to buy one of those boards. Which one do you prefer (audio quality/noise level) unmodified? The new Sure TPA3110 or the YJ blackblueboard TPA3116D2?

shadowlight · « **Reply #1346 on:** 21 Sep 2015, 06:24 pm »

How are folks connecting up the Astron power supply to TPA amps along with how are the amps grounded? Looking to purchase Astron SL-11A but not 100% sure on how to hook up and provide ground both to Wiener and DUG boards.

TIA

Poultrygeist · « **Reply #1347 on:** 21 Sep 2015, 11:49 pm »

The Astron has a positive and negative terminal. The positive lead and negative lead from the board are connected to these terminals. The picture does not show this as I made the connections internally. The Astron is grounded via it's three prong wall plug.

shadowlight · « **Reply #1348 on:** 23 Sep 2015, 03:03 pm »

Quote from: Poultrygeist on 21 Sep 2015, 11:49 pm

The Astron has a positive and negative terminal. The positive lead and negative lead from the board are connected to these terminals. The picture does not show this as I made the connections internally. The Astron is grounded via it's three prong wall plug.

Is the ground from Astron attached to the amp module or there is no need to do that? If it is connected how do I go about connecting with just the external positive and negative connections.

Poultrygeist · « **Reply #1349 on:** 23 Sep 2015, 09:53 pm »

The Astron is grounded. That's all one needs.

Mojo Warrior · « **Reply #1350 on:** 15 Dec 2015, 10:59 pm »

Quote from: Poultrygeist on 23 Sep 2015, 09:53 pm

The Astron is grounded. That's all one needs.

Any idea of what size DC coaxial power connectors are needed to connect the Astron PSU to a Topping TP-31 ?

Folsom · « **Reply #1351 on:** 16 Dec 2015, 12:17 am »

Quote from: shadowlight on 23 Sep 2015, 03:03 pm

Is the ground from Astron attached to the amp module or there is no need to do that? If it is connected how do I go about connecting with just the external positive and negative connections.

There's no need. The amp runs on safe voltages of DC. It'll cook itself before it can use any real power from the Astron.

The Astron is good to be grounded because it has line voltages in it.

If anything adding ground to the amp could add noise. The only reason to do it is if you're using balanced inputs then the chassis should be connected to safety ground, but not the amplifier.

Poultrygeist · « **Reply #1352 on:** 16 Dec 2015, 10:24 am »

Quote from: Mojo Warrior on 15 Dec 2015, 10:59 pm

Any idea of what size DC coaxial power connectors are needed to connect the Astron PSU to a Topping TP-31 ?

You could use something like this female barrel connector.

Run wires from the Astron's terminals to it and plug into your Topping.

My Topping TP21 uses a male input jack measuring 5.5mm x 2.5mm.

http://www.ebay.com/itm/10-pcs-Male-Female-2-1x5-5mm-DC-Power-Plug-Jack-Adapter-Wire-Connector-for-CCTV-/111758608945?hash=item1a05550a31:g:gMUAAOSw3ydV48JR

Poultrygeist · « **Reply #1353 on:** 16 Dec 2015, 10:36 am »

This is my latest and favorite TPA3116. The dual chip model velcroed to a low profile Astron SL.

One thing I like about the Astrons is their connection terminals are on the back while the on/off switch is on the front.

Mojo Warrior · « **Reply #1354 on:** 16 Dec 2015, 04:15 pm »

Quote from: Poultrygeist on 16 Dec 2015, 10:24 am

You could use something like this female barrel connector.

Run wires from the Astron's terminals to it and plug into your Topping.

My Topping TP21 uses a male input jack measuring 5.5mm x 2.5mm.

http://www.ebay.com/itm/10-pcs-Male-Female-2-1x5-5mm-DC-Power-Plug-Jack-Adapter-Wire-Connector-for-CCTV-/111758608945?hash=item1a05550a31:g:gMUAAOSw3ydV48JR

Can they handle 7A of current ?

Poultrygeist · « **Reply #1355 on:** 17 Dec 2015, 11:21 am »

I use the Astron SL-15R which is 15A.

cody69 · « **Reply #1356 on:** 20 Feb 2016, 05:58 pm »

After building a couple TPA3110 amps, had the opportunity for building a bigger brother TPA3116 amp.
Using a stock board from PE with no mods -- need to read through this thread to figure out what mods to consider.
Great info in this thread, thanks to the many ACers who have contributed.

Have it connected to a pair of GR X-LS speakers -- really liking it.

Odal3 · « **Reply #1357 on:** 20 Feb 2016, 06:13 pm »

Looks great! Well done.

matt_garman · « **Reply #1358 on:** 20 Feb 2016, 08:29 pm »

cody69, did you use Duratex for the finish of your chassis? I finished my speakers in Duratex, here's a pic.

As for mods for that particular amp aboard: that's the "famous" Yuan-Jing blue/black board. Lots of discussion about modding that board over in the huge tpa3116 thread at diyaudio.com. But here's a post with the summary of the most crucial mods. Copied here for convenience:

1. Main power rail caps switch to high quality name brand ones with low ESR. Favorite is Panasonic SEPF 330uF 25V
2. Bootstrap snubber 330pF and 10R before L inputs.
3. Main input caps switch to quality film 4.7uF
4. Film caps for bootstrap caps vs old ceramics
5. High current Coilcraft inductors
6. Input trafo for balanced inputs to amp

Items 1 through 4 are cheap and relatively easy. Not many people have done item 6, and good input transformers are expensive. (Though I'm working on a tpa3116 build right now with input transformers, though not using that board.)

cody69 · « **Reply #1359 on:** 20 Feb 2016, 09:37 pm »

Quote

cody69, did you use Duratex for the finish of your chassis? I finished my speakers in Duratex, here's a pic.

Matt, Yes, it is Duratex... I find it really easy to work with and gives a nice durable finish.

Really appreciate the short-cut to the TPA3116 mods -- will make these steps much more approachable!
And with the thread you turned me on to at diyAudio, plus this one... I've got plenty of reading material to go through when there's time.

BTW, those are great looking near field speakers!