Przem's Phase Linear 700 Series II White Oak Conversion

[pennysdad]

Now, I'm a horn guy, but the Nexo's I've head at the last 2 concerts have been nothing short of amazing....

Absolutely with you there, Lee….
…. and from my limited experience, I'm at a loss how the Nexo get it so right, in fidelity, coverage/dispersion, and maintain uniform SPL's wherever you are in the very generously covered listening field.

 

[laatsch55]

Well said. We've come a long way in 40 years...but they couldn't pull it off without MASSIVE AMOUNTS OF POWER!!

 

[pennysdad]

Well said. We've come a long way in 40 years...but they couldn't pull it off without MASSIVE AMOUNTS OF POWER!!

100% correct Lee, and if ya got big amps, then wot else are u gonna do with 'em, but build a big system, that can utilise it.
Why should we settle for anything less, if it's out there?
…. and NOW people are realising wot headroom brings to the table, and loving it.
Except those that 'can' the whole idea, but then they are the types that 'can' anything just for the sake of it.
I grew up with horns, but I'll go out using arrays. I love either anyway. There's greatness in both.

 

[P.L.F.]

I grew up with horns, but I'll go out using arrays. I love either anyway. There's greatness in both.

SO WELL STATED, I SUBSCRIBE ENTIRELY!!!

 

[laatsch55]

The K-Horn bass bin is one of the greatest inventions of all time. Need to figure out how to integrate the two. In a home setting PWK had it right. I was showing the K's off last night and I am still amazed at the bass response. But once again my crossovers are taking a hit.

 

[pennysdad]

The K-Horn bass bin is one of the greatest inventions of all time. Need to figure out how to integrate the two. In a home setting PWK had it right. I was showing the K's off last night and I am still amazed at the bass response. But once again my crossovers are taking a hit.

The time may come eventually when you could give bi-amping with a WOPL'ed 700 and a 400, and an Active X-o a go.
It's a thought....

 

[laatsch55]

I have a Pioneer D-23 x-over and am considering it BD....

 

[pennysdad]

I have a Pioneer D-23 x-over and am considering it BD....

You'll love it Lee. I just know you would.
Tread gently 'till you get the hang of the 'different' sound, and find the most suitable x-o point, then you'll be kicking yourself for not having done it sooner.

 

[premiumplus]

The time may come eventually when you could give bi-amping with a WOPL'ed 700 and a 400, and an Active X-o a go.
It's a thought....

JUST DOOOOOO IT!!!!!!
Seriously, Lee. I have my DQ-10's biamped with two WOPL 1000's and I'm never looking back. You'll be amazed at the way the mids and highs bloom when they have their own amplifier. And the bottom end will be so clean. Let the electronic crossover do its thing and quit frying your passive crossovers.

 

[premiumplus]

Like BD says, you'll have so much more control. And think of all the wasted power that you're using to cook your crossovers now. That's the reason the Dahlquist DQ-10s are so power hungry, is that 5 way crossover. So with the bi-amp setup, I don't send tons of low bass signal to the mains, it goes to the second WOPL. Less waste, more music. And you tune the crossover point and amplitude in real time. It's a win-win.

 

[pennysdad]

Absolutely "ALL OF THE ABOVE" Lee....
Dave's hit the nail right on the head, and has described it perfectly. (nice one Dave...)

 

[premiumplus]

Absolutely "ALL OF THE ABOVE" Lee....
Dave's hit the nail right on the head, and has described it perfectly. (nice one Dave...)

We aim to please...

 

[P.L.F.]

Does it mean you simply skip passive x-overs in speakers (I assume there two separate in each channel: HF & LF) having plugged the electronic x-over before the two amps? And what if you leave them? Would they be 'transparent' so to speak, i.e. LF passive x-over will get only LF anyway? Something to do with bad phase shifting or time alingment?

P.S.
I've just started to read this website on the topic (http://education.lenardaudio.com/en/06_x-over.html)

 

[pennysdad]

Does it mean you simply skip passive x-overs in speakers (I assume there two separate in each channel: HF & LF) having plugged the electronic x-over before the two amps? And what if you leave them? Would they be 'transparent' so to speak, i.e. LF passive x-over will get only LF anyway? Something to do with bad phase shifting or time alingment?

P.S.
I've just started to read this website on the topic (http://education.lenardaudio.com/en/06_x-over.html)

u must physically disconnect the woofers from the passive x-o's in the boxes, and feed them independently from a separate bandpassed stereo power amp.
(read Dave's posts #329 and #330 again.)
if u can stop the bass from going into your boxes passive x-o's, (which u'll still need if u have a 3-way so has to split the remaining mids from the highs), then u will decrease the amount of power running thru the x-o's drastically, which saves 'em from burning out.

 

[laatsch55]

The D-23 is a 4 way and I have lots of Amps. I like the idea of a 400 on the mids and tweets together. And that would remove 90% of the power going to the passives.

 

[Northwinds]

u must physically disconnect the woofers from the passive x-o's in the boxes, and feed them independently from a separate bandpassed stereo power amp.
(read Dave's posts #329 and #330 again.)
if u can stop the bass from going into your boxes passive x-o's, (which u'll still need if u have a 3-way so has to split the remaining mids from the highs), then u will decrease the amount of power running thru the x-o's drastically, which saves 'em from burning out.

So basically your saying to also drill another set of speaker posts in the cabs BD? Do you just tape off and isolate the connections for the woofers? I wondered about biamping since Lee mentioned it awhile back. Seems like the amps would run easier and I like the idea of lessening the chance of frying something inside the speakers besides the drivers. Would you need two preamps also to attenuate volume, it would be cool for flexibility. Like boost on demand LOL

 

[laatsch55]

The electronic crossovers have gain controls. One input and 4 outputs...

 

[pennysdad]

So basically your saying to also drill another set of speaker posts in the cabs BD? Do you just tape off and isolate the connections for the woofers? I wondered about biamping since Lee mentioned it awhile back. Seems like the amps would run easier and I like the idea of lessening the chance of frying something inside the speakers besides the drivers. Would you need two preamps also to attenuate volume, it would be cool for flexibility. Like boost on demand LOL

Initially, I'd just run the wiring out through the port. That way u don't have to tamper with the box, until ur absolutely sure it works for u.
... and yes, just tape off the flying woofer leads off the x-o for now.
Eventually, once you've got the hang of things, u can make slight mods, like adding an extra pair of terminals, and a switch (heavy duty) to select between active and passive, 'cause sometimes, u can be quite happy with low level listening, and therefore not necessarily have two amps etc running.
... and as Lee said, (usually) the active x-o has all the gain controls u need, as his obviously does.
Also, a point to be made, is that using passive x-o's for the mid/highs, can be a good thing, IF by some remote chance that things may go wrong, and if an amp should ever go DC, (yes Lee, I know how protected WOPL's are) but, again, IF, something should go wrong, the caps in your passive x-o's may just save ur tweeters from frying.

Anyway, now you'll have extra stuff to mess with, so u CAN have ur cake AND eat it too!

*Wot? A Facebook 'Like' button at the top of the page???? I just gotta click THAT.... LoL

 

[P.L.F.]

An explanation is in order Przem....I have been hit with a surprise audit by our local Department of Transportation and will host said agency at my house next Tuesday. I have been shuffling paper like a madman and will up until the hour they arrive. No amp fixin till after that. I will eventually fall on my sword and beg leniency as that is the only thing that will save me....certainly not my files being in compliance....sorry Bud...

Hi Lee, any sword injuries after the audit ?

 

[laatsch55]

A 70.00 dollar fine a nd a slap on the hands...