Cwejman PH-4 vs. Doepfer A-143-9-- thoughts?

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Leisure Cove
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Cwejman PH-4 vs. Doepfer A-143-9-- thoughts?

Post by Leisure Cove » Thu Oct 30, 2008 11:35 am

I've been interested in picking up a PH-4 ever since reading about/seeing videos of one a few months back, but like most things Cwejman, it's a couple hundred dollars out of my budget.

That said, I recently noticed Doepfer's A-143-9 Voltage Controlled Quadrature LFO/VCO, which seems to accomplish a similar function at 1/4 the price. Needless to say, I'm intrigued.

Do any of you have experience with the Doepfer module? Thoughts?

Thanks!

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Post by REwire » Thu Oct 30, 2008 12:22 pm

The Cwejman does two things the Doepfer doesn't that makes it worth the extra dough for me: A Leveled Output and an Offset Control. Makes dialing in specific CV amounts a dream.

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Post by Leisure Cove » Thu Oct 30, 2008 12:58 pm

Good point!

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Post by dkcg » Thu Oct 30, 2008 1:08 pm

REwire wrote:The Cwejman does two things the Doepfer doesn't that makes it worth the extra dough for me: A Leveled Output and an Offset Control. Makes dialing in specific CV amounts a dream.
And they come in SUPER handy.

Also, the Cwejman outputs linear triangle as well as sine.

I also wouldn't be surprised if it tracks 1vt/oct. A lot of his LFOs do.

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Post by REwire » Thu Oct 30, 2008 1:12 pm

But one more thing, I think the A-143-9 can go to audio levels. The PH-4 can't. That's one thing I wish it did.

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Post by e-grad » Thu Oct 30, 2008 2:24 pm

According to Cwejman's HP the PH-4 cycles from 40sec. to 20ms which is 50Hz if my math is fine. But it probably isn't.

http://www.cwejman.net/cwejman.net/ph-4.pdf

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Post by wetterberg » Thu Oct 30, 2008 4:49 pm

e-grad wrote:According to Cwejman's HP the PH-4 cycles from 40sec. to 20ms which is 50Hz if my math is fine. But it probably isn't.

http://www.cwejman.net/cwejman.net/ph-4.pdf
well that's also just *barely* audio rates, to be fair. Not "real audio rates" ;)

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Post by Cat-A-Tonic » Thu Oct 30, 2008 5:56 pm

There is also the Ian Fritz - Chaquo
http://www.bridechamber.com/bridechambe ... haQuO.html
http://www.analoguehaven.com/elbydesigns/chaquo/
and the Thomas Henry - Mankato, which STG will probably do in Euro sooner or later.
http://www.magsmoke.com/products.asp
Both have quadrature oscillator capabilities, but with very different features.

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Post by tragedybysyntax » Fri Oct 31, 2008 11:48 am

what about these two comparing to the one in frac i was eyefucking...

http://synthasonic.com/phaser.html

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Post by Cat-A-Tonic » Fri Oct 31, 2008 11:55 am

The Synthasonic/MFOS Phaser is primarily for signal processing.
The Cwej. PH-4, and the Doepfer Quadrature LFO are oscillators with multiple phase outputs.
Very different beasties I think.

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Post by dougcl » Tue Nov 04, 2008 8:30 pm

I measured 9.7kHz max from the PH-4. The nice thing about this module compared to the doepfer is that it is 1v/oct. You can FM modulate with it without using up a VCO. The VC rate, offset, and level makes it very flexible and convenient. It sits in the middle of my audio section where it can provide FM modulation to the VCO's, panning for the mixers, and other cool stuff.

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Post by D/A A/D » Tue Nov 04, 2008 9:07 pm

As someone who loves the A-143-9, it has 2 CV inputs for frequency. One of which is bipolar, and with 8v of negative CV this baby can go LONG!

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Post by dkcg » Tue Nov 04, 2008 10:09 pm

I recently got the 143-9 and already had the ph-4. The PH-4 kicks the 143-9 as far as using it as a LFO, the offset and level CV inputs add a lot, and the linear/sine wave output gives the output two different flavors for LFO usage. The 143-9, I like that it goes to real audio ranges, haven't tested tracking, I don't really care since I consider it a utility FM tool rather than a tracked pitch. But having the two CVs in is really nice, I wish the Cwejman had the 2nd CV input that the 143-9 has, especially since it's a non-polarized control. I wish the Cwejman level and rate CVs were non-polar.

So both have benefits and weaknesses. But if I had to only have one, it would probably be the cwejman because of the offset and level CVs.

BTW, I mostly use the PH-4 as a panning LFO, filter frequency LFO, and PWM. All oscillators should be quadrature, or at least offer the inverse outputs (like the VCO-2RM). :D

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Post by felix » Wed Nov 05, 2008 1:40 am

Do you have any strong feelings on the switched range on the Doepfer?

Personally, I've never liked switched ranges on modules. That would probably be the only thing I don't like about my Dalek/Vulcan is the switched ranges.

I guess it does allow for more precise control within those ranges, but I'd prefer to just have a fully variable range.
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Post by dkcg » Wed Nov 05, 2008 2:06 am

felix wrote:Do you have any strong feelings on the switched range on the Doepfer?

Personally, I've never liked switched ranges on modules. That would probably be the only thing I don't like about my Dalek/Vulcan is the switched ranges.

I guess it does allow for more precise control within those ranges, but I'd prefer to just have a fully variable range.
That is one of the things I like about the RS-95e, I don't know about the one with the standard dial, but the dial the "e" adds twists like the fine tuner on some oscilloscopes, it feels like a small safe dial, and in the wide mode, it goes from LFO speeds all the way up to ultrasonic. And it has a standard range mode and low range.

I tried a weird thing with the dalek tonight with decent results, I sent it negative voltages and it slowed down even more into medium speed LFO territory. That things is such a cool module. I wonder what two running through a 3rd would sound like. :guinness:

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Post by felix » Wed Nov 05, 2008 3:02 am

dkcg wrote:I tried a weird thing with the dalek tonight with decent results, I sent it negative voltages and it slowed down even more into medium speed LFO territory. That things is such a cool module. I wonder what two running through a 3rd would sound like. :guinness:
Ah yes, I need to play with that more myself. Note that the Vulcan will do this too and get super slow.
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Post by dougcl » Sun Nov 09, 2008 3:21 am

Okay, this is how you get timing like in the Wogglebug video.

Edit: And it's posted to the wrong thread! Oh well.

Image

And here's how it sounds:
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Post by wetterberg » Sun Nov 09, 2008 7:59 am

great sample and patch, man!

....however, that's not "random" at all.
If anything it's chaotic, but not random.

;)

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Post by D/A A/D » Sun Nov 09, 2008 9:48 am

dougcl wrote:Okay, this is how you get timing like in the Wogglebug video.

Edit: And it's posted to the wrong thread! Oh well.

Image

And here's how it sounds:
What the hell are you talking about?

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Post by dougcl » Sun Nov 09, 2008 11:28 am

Sorry, this was supposed to be posted under the A-149-1 thread, not the A-143-9 thread. See the A-149-1 thread: viewtopic.php?t=1925.

After posting this, I realized that "Random Clock Out" was not quite what I should say, but hopefully everyone gets the idea anyway. The patch does not readily fall into a rut, so it seems pretty effective to me.

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Post by D/A A/D » Sun Nov 09, 2008 12:22 pm

dougcl wrote:Sorry, this was supposed to be posted under the A-149-1 thread, not the A-143-9 thread. See the A-149-1 thread: viewtopic.php?t=1925.

After posting this, I realized that "Random Clock Out" was not quite what I should say, but hopefully everyone gets the idea anyway. The patch does not readily fall into a rut, so it seems pretty effective to me.
What are the knobs set of this? And what other mods are you using? I can't seem to get this patch to work for me...

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Post by dougcl » Sun Nov 09, 2008 12:28 pm

I had the Slew on H and the knob cranked all the way up. I had the CV knob on the VCLFOs all the way up. I had the VCLFO freq knobs at about 75%. You adjust the freq knobs to vary the behavior.

I'm lying a little. I don't have two VCLFO's. I only have one, and I was using a PH-4 in place of one of the VCLFO's. Should be the same though!

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