Upgrading a MS2250TA into a real MS2250

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Pedi
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Post by Pedi »

stipud wrote:Pedi, that is just 4 ohm wattage. I assume at 2 ohms the MS1000TA would probably do just as much damage as an MS1000 at 4 ohms.
Yeah, and maybe a little bit better.

But wasn't the original 2250 only stable in 4 ohms?

I really need the 2 ohm possibillity, since my Strokers are dual coils.

But Eric: Your upgraded 2250ta.... is it 2 ohm stable? If so, the watt figures must be insane????
Selling your Ti9 mids? PM me, please..

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Eric D
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Post by Eric D »

I would not worry, the MS100TA may have more power bridged per board than the original MS2250 did. The limitation of the whole power supply on these amps is about 1000W, and the only differences are what impedance you get the most efficient use out of the amp. The MS2125 will do at 2ohm mono what the MS2250TA will do at 4 ohm for example. And the original MS2250 may do more, but with more heat.

I have to custom fit each transformer to the board. This is due to my limited skill at producing exact duplicate transformers, and due to the chances of them unwinding in shipping. I make them and fit them as I go.

As for the old parts, they are of no use, and are very inexpensive to get more of anyway.

If I did a MS2125 to MS2250 swap, I would keep all of the transistors for use with future amps. The MS2250TA to MS2250 swap does not require all new transistors.
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Eric D
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Post by Eric D »

Like the original nickel plated MS1000, my modified MS2250TAs are not 2ohm stable mono. I suppose you could try, but the current draw and heat produced would be overwhelming.
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Pedi
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Post by Pedi »

Eric D wrote:Like the original nickel plated MS1000, my modified MS2250TAs are not 2ohm stable mono. I suppose you could try, but the current draw and heat produced would be overwhelming.
Thank you for this info.

My guess is best to leave the MS1000ta as is - as I am stressing it into 2 ohms....
Selling your Ti9 mids? PM me, please..

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bdubs767
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Post by bdubs767 »

the ms1000ta one half is more then enough for subs...if you think you need this upgrade to get more power to your subs your crazy and going about it the wrong way. Go class D if you want your subs louder then the ms2250ta can give you.
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Haz
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Post by Haz »

Eric D wrote:Like the original nickel plated MS1000, my modified MS2250TAs are not 2ohm stable mono. I suppose you could try, but the current draw and heat produced would be overwhelming.
Firstly I bought the Modified MS1000TA from Doc, and I powered a ti12d elite which means 2 ohms per board. The subwoofer was insanely loud but the amp was extremely hot after 15 mins use. It was so hot that you couldn't put your hand on the heatsink for more then a few seconds. Because of that I bought a Ti1200.1 for the elite sub and the Modified MS1000TA is planned for the front Ti951 comp set. Plus I bought a new headunit, the Alpine F1 status and the H990 processor. With this headunit and processor there will be no flawes in the signal to the amp. And I can't wait to hear the Modified MS1000TA's full potential with this new beast of a headunit I bought.

Haz
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Post by CarAudioGuru »

Eric...who wound the transformers? Everything else is relativily straight forward. But winding the cores is a BITCH!!! Especially the turns ratio.

Man if you can do that...YOU are DA MAN!!!! (my new hero!!)

Does the MS2250TA come with the Big Ass "shroud". As the heatsink it not massive enough to disipate the doubleing of power over a MS2125
Larry Frederick
"Original PG Guy"
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stipud
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Post by stipud »

Eric wound them himself. Some more pics of his build here:
http://www.soundbuggy.com/Eric/Car%20Au ... index.html

And more of his work here:
http://www.soundbuggy.com/Eric/Car%20Audio/index.html

Unfortunately he hasn't posted here in a few months now, but you can still contact him at eric@soundbuggy.com. I'm sure he would love to hear your compliment ;)
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shaheen
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Post by shaheen »

Larry , you are still my hero , how are things going, have not seen you on here for a while.
How are things with Audison, don't you miss the PG stuff.

I assume you would else you would not be here
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Post by CarAudioGuru »

If they would have let me keep designing product, I would have stayed.

But..becasue I was such a "great " ambassador for the company out in the field ( the whole damn world!!) they just wanted me to keep flying around. Shaking hands and kissing babies stuff.

I have a wife and 2 kids! I don't mind travel, but I was traveling CRAZY there for YEARS!!!

When I was told by guys I HIRED that I didn't know anything about product anymore, and that they were much better at product development
(in so many words) I knew it was time to go.

Yeah...that proved out, didn't it. :twisted:

Audison/Hertz is kicking ass right now in the USA. We are over our "high" forecast. And considering the state of US economy, that is saying a LOT!!! Wish I had more "hands on" with product development though :(

But the product is awesome (like old days with MS/MPS stuff)

Been berry berry busy, and over on 12vinsider forum a lot. Retailers/installers/manuafacturers only forum.

And you???? Kicking it :lol:
Larry Frederick
"Original PG Guy"
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fuzzysnuggleduck
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Post by fuzzysnuggleduck »

Ain't that the truth with all technical jobs!

Once some manager/sales/pr person realizes you're good at something other than tech they want to suck you out of tech and get you working for them.

In my line of work, that's a constant.
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shaheen
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Post by shaheen »

dude, you have no idea, been out of Audio for a while now , moved into IT , but still dabble in all the good stuff. Good to hear about Audison I have a few in my collection and they they are really good products, love the build on them, But I get what you say about traveling , and you right , family is more important then all the travel.

Living in the UK now, so no longer in SA. and you right , shows how much they knew about product design, I think the price of MS amps and their desirability amongst the purists is testament to your skills.

I think the last time we spoke was when you were at Concept , but good that you are on here, I for one really appreciate your input.

Be good, will drop you a PM with details.
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smgreen20
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Post by smgreen20 »

Tom,

help me out. I can't seem to find the repair jib he did on the ZX450 where part of the board has to be replaced. I can't remember if it was here or at the SB forum. :idiot: :idiot: :idiot:
"ZPA's will have the same sound essentially as you get from the MS, they just feature a bigger shinier set of balls."

Install:
http://phoenixphorum.com/viewtopic.php?f=10&t=16998
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stipud
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Post by stipud »

http://www.soundbuggy.com/Eric/Car%20Au ... index.html

http://www.soundbuggy.com/Eric/Car%20Au ... index.html

The thread is on SB, which has been down for awhile unfortuantely.
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