Elitzur–Vaidman
Addicted to Fun and Learning
It's my understanding that it's effectively the same thing. Not all amplifiers are bridgeable.Not sure that means the same thing as this:
How To Set Up An Amplifier [Bridge vs Parallel vs Stereo]
It's my understanding that it's effectively the same thing. Not all amplifiers are bridgeable.Not sure that means the same thing as this:
How To Set Up An Amplifier [Bridge vs Parallel vs Stereo]
While the average ASR member might be likely to swap preamps mulitple times over the life of their power amp... I'm not sure the average consumer is. Even within our ranks the odds of moving from a pre with RCA only to one with XLR only is fairly unlikely. At least they offer configurations with both options (and even more valuable IMO an optional 12V trigger).It would be nice if Nord would allow both RCA and XLR on the same entry level model...
it was not in their specs, so it is very likely not designed that way - so no bridge for youCan this amplifier be safely used bridged if I want even more power for a single speaker?
This is the same logic that lead to opamp rolling in headphone amps a couple of decades ago. What matters is the implementation more than the chip.
Topping was able to create a 102 dB SINAD amp while the A07 is 82 dB SINAD. Topping is 191 watts at 4 ohm load vs. 77 for the A07.
This PA7 Plus is able to perform more like a Hypex nc252mp amp despite using a TPA chipamp for its class D output stage. If it performs more like a $500 hypex then a $75 basic TPA implementation dont be surprised if the prices match.
It meets AND EXCEEDS spec, doesn't it?It’s big difference to the mentioned spec:
Output Levels
2 V RMS for rated specifications.
This subject has been covered before. The question of whether a stereo amplifier can be bridged to mono has both a technical answer, and a practical answer.Can this amplifier be safely used bridged if I want even more power for a single speaker?
but very far difference from the spec. It’s measured as 9 VrmsIt meets AND EXCEEDS spec, doesn't it?
I apologize for expecting utility and fidelity, rather than pointless measurebation
As I wrote in the post you quoted, the volume defeat switch on the back (which wasn't called out in the review, and one has to squint to see in the picture) upgrades the volume knob from demerit to useless appendage.
As a basic amp, this one, assuming reliability etc., seems fine enough so long as one's OK with a small and load-invariant but broad treble dip. Since most electronics are so irrelevant in terms of effect on the actual sound of a music reproduction chain, it's hard to care too much one way or the other..
I'm not interested enough to actually the test the audibility of that treble dip (not in the market for a basic amplifier, and honestly if I were I would prioritize flat FR anyway), but it would be eye-opening if a small but wide bandwidth treble depression like that is in fact inaudible. One can imagine a certain loonie-with-a-vendetta lining people up to do a double blind test to smear @amirm and "prove" two Amir-recommended amps "sound different" without giving appropriate context around either the reason for the difference or the practical impact of it.
it was not in their specs, so it is very likely not designed that way - so no bridge for you
Details in post #286it was not in their specs, so it is very likely not designed that way - so no bridge for you
Details in post #286
If you want to drive this speaker to its max rated power handling capacity, you'll need an amp that can provide 53 V output, which means the amp needs to have an 8 ohm power output rating of 53^2/8 = 351 W. The Hypex NCx500 is rated to 380 W @ 8 ohm, which just makes it.I'm new to the world of external amplification as all my speakers have been internally powered...
Suppose I wanted to provide power to this PA speaker up to its rated 112dB continuous spec: https://www.fulcrum-acoustic.com/product/rx699-6-coaxial-loudspeaker/
Would something like the ff. be way overkill?
Buckeye Amps
Buckeye Amps utilizes the most advanced audio amplifier technologies available. Authorized seller for Hypex and Purifi Class D amplifiers. Based in the US. Free shipping and worldwide service!www.buckeyeamp.com
Or, maybe not by very much...
It's all about feedback implementation -- more complex, sophisticated feedback compensation schemes allowing higher open-loop gain at audio frequencies yet with adequate closed-loop phase margin for stability. Texas Instruments shows how PFFB alone can improve SINAD 4-6 dB over its stock 325x Eval Board. For the rest one can look to Mr. Putzeys' analyses and/or advanced studies in control systems analysis.Anyone guess what they did to get this performance? I would guess that internally there is a TPA per channel to make this fully balanced internally and after the output filter they are using the final signal to feed an opamp to form a composite amp and get the load invariance, high gain and high SINAD.
That speaker appears to be for public address applications, and it's specified as 16ohm. So I would be aiming for a public address amplifier, rather than a hifi amplifier.
I suggest you email Fulcrum Acoustic for their advice - give them full details about your intended use of the speaker/amp.
You’ll need about 160W to do that.I'm new to the world of external amplification as all my speakers have been internally powered...
Suppose I wanted to provide power to this PA speaker up to its rated 112dB continuous spec: https://www.fulcrum-acoustic.com/product/rx699-6-coaxial-loudspeaker/
The main issue is that the speaker is 16 Ohm. That doesn’t leave modern amps with a lot of power because they are optimized for low impedance operation.Would something like the ff. be way overkill?
Buckeye Amps
Buckeye Amps utilizes the most advanced audio amplifier technologies available. Authorized seller for Hypex and Purifi Class D amplifiers. Based in the US. Free shipping and worldwide service!www.buckeyeamp.com
Or, maybe not by very much...
You’ll need about 160W to do that.
The main issue is that the speaker is 16 Ohm. That doesn’t leave modern amps with a lot of power because they are optimized for low impedance operation.
Shouldn't any amp that can do 320W @ 8Ohm be fine?You’ll need about 160W to do that.
The main issue is that the speaker is 16 Ohm. That doesn’t leave modern amps with a lot of power because they are optimized for low impedance operation.
Possibly.. you need at least a 51V power supply to get 160W into 16R.Shouldn't any amp that can do 320W @ 8Ohm be fine?
Why not have a look at icePower 1200as2 based one?I have been looking at some PA amps as well, but just about all of them have internal fans or have more channels than I care for...