Help need speaker to match Threshold 4000 amp....

Ferrari,
How about Lector Zoe Italian Preamp...I heard this is a very musical pre.
I talked to Mr. Jon Sodenberg and told me older tube pre will work and any tube pre will work especially Audio research.
I am looking for a Lector Zoe Pre and do the speaker later.
Member please need more input for right speaker and preamp.

Thanks.pescolar

Yesterday I got few minutes late.There was a Lector Zoe came out for sale at Audiogon for $800 ...Ht by pass not working...anyway I think I am going to ARC pre.
Ferrari, i will check n read regarding ARC SP8 & SP10 and read more.I have to be carefull on choosing what I want.So I won't look back any more and then find the speaker for my future system.Any feed back on Dynaudio Contour SE..never heard of it.

Ferrari are you close to Brentwood right?

Thanks.pescolar

Bombaywalla,

Any tube pre-amp recommendation mating my Threshold 4000.

How about Cary Slp-98 (output impedance 400 ohms)

Thanks.pescolar

Can anyone have any information about the input impedance of Threshold 4000..I am trying to google it and no luck yet.

Mr. Jon Soderberg ( nice guy) e-mailed me almost a week now and told me Threshold 4000 amp input Z is 15k.

Is there anyone out there can explain or how to match the right number for the pre-amp out put?

Thanks.
pescolar

I am confused about this 4000 amp input impedance.

1.My e-mailed responsed fr Jon Soderberg regarding about 4000 ,input impedance is 15k.

2.e-mailed responsed yesterday fr.Nelson Pass,input impedance is 75,000 kohms.

3.One member from this trade :
http://trade.audiasylum.com/ca/ca.html?ca=10701
Input impedance is 75k ohms according to 4000 manuals.

With all my respect mentioned name above I do believed to Jon Soderberg for his top notch P/M & upgrade & advise
Same thing from Nelson Pass information.
Which is which now 15k or 75k ? HELP!pescolar

I apologized for last # 3.Pls.desregard..trade.audiasylum.
It should be.
http://trade.audioasylum.com/ca/ca.html?ca=10701

I have to agree that 75k input impedance is the right one.

-----Original Message-----
From: Nelson Pass
To: junpablo
Sent: Wed, May 25, 2011 5:32 pm
Subject: Re: Vintage Threshold 4000 Class A amp:/ Need specifications/ Input Impedance:

I looked at the schematic, and a quick calculation shows 75K. The 15K value is
in error - the 10K value he is looking at has been bootstrapped to a 70K value. and
is added to the 4.75K input resistor before it.
np

NOW IT'S TIME TO FIND A TUBE PRE-AMP THAT WILL SUITED IN MY BUDGET AND IN A TIMELY MANNER.THANKS TO ALL PESCOLAR.

Bombaywalla, recently sold all my tube gears including Cary SLP-98 for financial reasons and now I am starting to build a budgeted system.I am familiar with SLP-98 and actually I kept enough 6sn7 and extras...will be a little cheaper if i decide to slp-98...but dreaming to have ARC too.if i have extra dough then ill go to all Pass Labs gears.
SO MOST LIKELY MY PRE-AMP 'S CHOICE ....CARY SLP-98.

Last Memorial weekend just happened in one of my friends party to auditioned a "DYNAUDIO AUDIENCE 82".

First time I heard this speaker and make me decide to go for Dynaudio Speaker ,now first choice.

HOW MUCH SHOULD I PAY FOR A USED ONE?

Any idea on the used priced market?Thanks.pescolar