Why not horns?

Al, I wasn't questioning your analysis, you clearly understand the technical side of things. I was just trying to clarify the mystery of why this particular amp could double power when outputs were put in parallel.

BTW the specs for the VK-600 and others are on the website. The 600 delivers 300W/ch @ 8 ohms and doubles that into 4 ohms. I also checked on the power output when run as monoblocks. As we predicted, it does not double it's power output as a monoblock. I was told they can produce "somewhat" more power because the supplies don't sag as much. Again, consistent with what was previously stated.

Ralph, interesting info on the trios. I have Duos with the high impedance drivers so I assume it is the same scenario except the mid horn has no electrical crossover; the tweeter does. It looks to me from their brochure that the cap is in series with the driver which makes sense if you want to block low frequencies. I don't see how this would cause the impedance to dip to 4 ohms at high frequencies. Help me out here.

As soon as Pure Music releases a version with a three way crossover instead of just 2 way I intend to pull the tweeter crossover and try to run it straight to the amp like the mid and my basshorn are now.

JohnK, I think it's great that an offset bipolar type might find its way into your lineup! I consider it an honor that you see enough potential to give it a shot. Let me know what Joe thinks if you get a chance.

There's at least one other manufacturer, Jim Romeyn, doing his own variation on the theme, and here's a link in case you'd like to take a look at what he's doing:

http://jamesromeyn.com/home-audio-gear/jr-modular-pro-monitor-3kpr-usd/

Very best to you.

Duke

sorry for three posts in a row but I missed this earlier.

Prez, I couldn't figure where the 26dB cam from but now I do. My earlier analysis was of the VK-75/150 and I did not know you were looking at the solid state amps.

If you take a look at BATs website and look at the following products: VK-255SE and VK-600. You will see that both amplifiers have 26dB of gain. Yet one is rated at 150W into 8ohms and the other is 300W into 8ohms.

The practical difference between these two amps is that the VK-600 is basically a chasis with two of the smaller amps fit inside. There are other differences but practically speaking, this is the crux of it.

Bottom line. I totally agree that paralleling identical amps does NOT change the gain (dBW) one bit. But clearly, BAT is a good example of how it does double the output power.

I believe you should see now that your conclusion is incorrect. The 26dB, as stated by Al just means the input voltage gets multiplied by 20 for both amps.

To get 150W@8ohms from the smaller one takes about 1.7 volts in.

1.7V times 20 = 34V......34V squared divided by 8 = 150W
If you drive it harder you can't get more than 34V because the voltage can go no higher and it clips.

To get 300 Watts from the bigger amp takes about 2.5V in which produces about 50V out. It can go higher because the voltage rails are higher. It has a power supply with higher voltage rails and presumably more output devices in parallel to share the higher amount of current it can produce. It's not higher power because it has more devices in parallel, it is higher power because it has higher rails. It is not simply 2 of the smaller ones in the same box.

You clearly don't have a firm grip on the basics yet you attack me for pointing that out. I don't know what to tell you. That's all basic electronics that a first year tech school student learns yet you call me a complete and utter fool when I explain it to you.

.

Lets move on,NOTHING has been settled here...

All I know is, the Klipschorn speaker has been made for

over 60 years, along with JBL, they have been making

the speakers the Studios used for many years.

That said: The "HORN" speaker, has firmly rooted itself,

into the Audio "Hall of Fame".

Name some of YOUR favorite speakers, how long have they

been around?

As I said earlier, no, Horns are not for everyone.

Life goes on.

Love them, hate them, it is YOUR choice; but to say

Horn speakers, fail to deliver superb sound, when

implemented properly, is just plain "IGNORANT".

From Japan, to Europe, and back, Klipschorn,along with

JBL, for over 60 years and counting, are still revered,

World Wide.

Somebody Loves Horns...

I Love Music!