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I want to tri amp my speakers and I am looking for advice on an for just the tweeters. fostex 90A's 106 db, my mid amp is 2 wpc and my woofer amp is 45 wpc.. Tubed or SS just need some advice and don't want to break the bank...
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Umm, I could build a dedicated tweeter amp. If you don't need alot of power it really isn't all that hard to do.
I probably already have the parts laying around...
Just for TEST and later retirement to a garage system?DTA-1 from parts express.
cost about 32$ right to your door.
Power maybe 4watts or 5 watts per side.
They call it 105db, A weighted
Might work in a low power triamp system?
Pretty quiet.
Too much is never enough
Edits: 06/01/17
This one is really handy for active since it has gain control and it is also fairly quiet at 116dB SNR (A weighted) which is important for a hi eff tweeter amp.
Plenty 2nd hand ones about if you wanna cheat the budget.
A great little amp (I've got two)!
Parasound "Z" series-
Parasound, in general, makes some very good gear, prices it sensibly, and has accumulated a lot of good reviews for their stuff.
The Z Phono small phono stage is REALLY good; it beats many $1,000+ phono preamps.
I suspect the Z Amp is similarly good, although it may have TOO MUCH power for your application- with really sensitive speakers, the noise floor of otherwise very quiet amps can sometimes be apparent. However, since these are so inexpensive and popular, you could buy a used one and try it; if it didn't suit your purposes you could easily sell it on.
Another bonus: the Z Amp is small.
You might consider a DIY Aleph Mini. ~10 w/channel class A single-ended SS amp, designed by Nelson Pass. You'll have to build it yourself, pay someone to build it for you, or find someone selling one that they built and are now moving on to build something else.
That parts cost less than about $250~$350 depending on the chassis you choose.
The Crestron CNAMPX-2X60 60 watt per channel stereo power amplifier, suitable for a super tweeter application is a great low-cost sleeper sometimes listed on eBay for as low as $100 used, often much higher based on its $1000 MSRP.It was designed and manufactured by ATI for Crestron's distributed audio network products. The build-quality is outstanding, built like a tank, featuring dual mono toroidal transformers, discrete high-current bipolar output transistors, and provides good protection circuitry for a super tweeter application. It sounds sweet and detailed when used with AMT super tweeters, IME.
The only caveat is that a 24VDC wall wart trigger needs to be plugged into an AC outlet at all times in order for the distributed network system power-on/power-off circuitry to operate. A button on the back of the unit needs to be reset if the trigger is turned-off for some reason, such as a power outage. Otherwise, it operates just like a conventional stereo power amplifier.
See link:
Edits: 05/22/17
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Edits: 12/21/18
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