Zen9 and Jordan jx92s

cascadeguy · 10th January 2007, 04:01 PM

Hi
I read in the articles page of the Passdiy website that Nelson Pass likes these drivers. However they are rather low sensitivity( 88-90 dB per w-m) My question is - would a Zenv9 be up to driving these speakers for classical music. The speaker would be a TL in a fairly small (10'X22') room. Does anybody else have a suggestion?
Thanks
Toby

Nelson Pass · 10th January 2007, 07:54 PM

Works great, no problems - as long as you don't play them
too hard.

cascadeguy · 10th January 2007, 08:21 PM

Should I use feedback Nelson?- or try to get them to work open loop.
Thanks

Nelson Pass · 10th January 2007, 08:57 PM

ZV9 is a feedback design, and that's how it manages .003%
distortion (best case

). You can build it without feedback,
but you have to lower the gain someway, and it quickly becomes
a different amp, with much higher distortion and no damping
factor.

Since the Jordan likes a damping factor (and lower distortion...)
this would be the recommended approach.

Babowana · 11th January 2007, 05:07 AM

Jx92s, very good also with Zen5
I''m planning to order one more pair for a new system

cascadeguy · 13th January 2007, 06:40 PM

Hi again,
I would, if possible, like to drive the z9 with a middle of the road CD player (Rotel 1072). Is the output impedence of the rotel good enough to drive the Z9? Do I need to also build a line stage preamp? Dumb questions I know, but i am wondering if I would be better off to plan ahead for the future and figure out a way to play cd's (or WAV files or ?) to a D/A box via USB from my laptop, or just a simple linestage or Sugestions please.

Nelson Pass · 13th January 2007, 07:06 PM

Most likely, yes to all.

cascadeguy · 14th January 2007, 12:27 AM

Ouch-you are correct of course. Thanks

10th January 2007, 04:01 PM	#1
cascadeguy diyAudio Member Join Date: Nov 2006	Zen9 and Jordan jx92s Hi I read in the articles page of the Passdiy website that Nelson Pass likes these drivers. However they are rather low sensitivity( 88-90 dB per w-m) My question is - would a Zenv9 be up to driving these speakers for classical music. The speaker would be a TL in a fairly small (10'X22') room. Does anybody else have a suggestion? Thanks Toby

13th January 2007, 06:40 PM	#6
cascadeguy diyAudio Member Join Date: Nov 2006	Input to Z9 Hi again, I would, if possible, like to drive the z9 with a middle of the road CD player (Rotel 1072). Is the output impedence of the rotel good enough to drive the Z9? Do I need to also build a line stage preamp? Dumb questions I know, but i am wondering if I would be better off to plan ahead for the future and figure out a way to play cd's (or WAV files or ?) to a D/A box via USB from my laptop, or just a simple linestage or Sugestions please.

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10th January 2007, 07:54 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Works great, no problems - as long as you don't play them too hard.

10th January 2007, 08:21 PM	#3
cascadeguy diyAudio Member Join Date: Nov 2006	Should I use feedback Nelson?- or try to get them to work open loop. Thanks

10th January 2007, 08:57 PM	#4
Nelson Pass The one and only Join Date: Mar 2001	ZV9 is a feedback design, and that's how it manages .003% distortion (best case ). You can build it without feedback, but you have to lower the gain someway, and it quickly becomes a different amp, with much higher distortion and no damping factor. Since the Jordan likes a damping factor (and lower distortion...) this would be the recommended approach.

11th January 2007, 05:07 AM	#5
Babowana Formerly "jh6you". R.I.P. Join Date: Jul 2006	Jx92s, very good also with Zen5 I''m planning to order one more pair for a new system

13th January 2007, 07:06 PM	#7
Nelson Pass The one and only Join Date: Mar 2001	Most likely, yes to all.

14th January 2007, 12:27 AM	#8
cascadeguy diyAudio Member Join Date: Nov 2006	Ouch-you are correct of course. Thanks