unbalanced line stage almost completed

Hanzwillem · 6th October 2003, 07:52 PM

Hi, finally i got myself to test the long completed unbalanced balanced line stage. After measuring with scope and multimeter I hooked it up to my Zen V2 and it sounds quite good already, even though the power supply (metal box and print next to it up side down) isn't finished yet. Also the gain is to high and I use a 50k ALPS pot i had found in my stock. I will replace that with a 10k as soon as possible. Also the decoupling caps are MKT which have to be replaced with better ofcourse.

btw, these bias resistors (3W) get really really hot and smell like burning hair after some minutes, is this normal? The ones in my boz get also really hot but they don't smell that bad. The bias resistors in my Zen are 25W, they can cope with some dissipation

Finally an image, it sounds better than it looks

the blue case beneath the amp is supposed to contain this linestage when finished...

greatings from Enschede, Netherlands,

Hans-Willem

Nelson Pass · 13th October 2003, 10:23 PM

Is it just me, or are there more DIYers per capita in the
Netherlands than anywhere else?

Wes Marquenie · 13th October 2003, 10:30 PM

And a lot of them in Enschede :-)

Hanzwillem · 13th October 2003, 10:41 PM

because dutch people are cheap. If they cannot afford expensive stuff they have to make it themselves

.

blank527 · 14th October 2003, 03:05 AM

And the sound is worse over here

Djomil · 14th October 2003, 11:51 AM

Where is the pictures!!!!!!!!!!!!!!!

Hanzwillem · 14th October 2003, 12:04 PM

indeed, where are the pictures? they WAS one...

still not packed in a nice housing...

Taco · 14th October 2003, 04:57 PM

Do you have the pot at the input? You can replace the pot with a cheap stepped-attenuater. (make your own ofcoz).

Dutch people are well educated, can write some words english, so they are hanging arround on foreign forums

. And many people here in Holland have an internet connection.

Hanzwillem · 14th October 2003, 05:07 PM

Quote:

Originally posted by Taco
Do you have the pot at the input? You can replace the pot with a cheap stepped-attenuater. (make your own ofcoz).

I have the pot at the input. I have a 24 step ELMA attenuator currently in my BOZ which I will use in the final version of my unBosoZ.

Merijn · 23rd October 2003, 02:03 PM

OK, so there ARE a lot of DIYers from Enschede here

HanzWillem, Maybe we could come together once and have a nice evening of tweaking and so on, I myself am currently fiddling with a nice preamp to drive my somewhat old QUAD 405, mr. Pass told me BoSoZ would do fine...

Greetz,

Merijn

6th October 2003, 07:52 PM	#1
Hanzwillem diyAudio Member Join Date: Nov 2002 Location: Hengelo, The Netherlands	unbalanced line stage almost completed Hi, finally i got myself to test the long completed unbalanced balanced line stage. After measuring with scope and multimeter I hooked it up to my Zen V2 and it sounds quite good already, even though the power supply (metal box and print next to it up side down) isn't finished yet. Also the gain is to high and I use a 50k ALPS pot i had found in my stock. I will replace that with a 10k as soon as possible. Also the decoupling caps are MKT which have to be replaced with better ofcourse. btw, these bias resistors (3W) get really really hot and smell like burning hair after some minutes, is this normal? The ones in my boz get also really hot but they don't smell that bad. The bias resistors in my Zen are 25W, they can cope with some dissipation Finally an image, it sounds better than it looks the blue case beneath the amp is supposed to contain this linestage when finished... greatings from Enschede, Netherlands, Hans-Willem

23rd October 2003, 02:03 PM	#10
Merijn diyAudio Member Join Date: May 2002 Location: Arnhem, The Netherlands	Enschede OK, so there ARE a lot of DIYers from Enschede here HanzWillem, Maybe we could come together once and have a nice evening of tweaking and so on, I myself am currently fiddling with a nice preamp to drive my somewhat old QUAD 405, mr. Pass told me BoSoZ would do fine... Greetz, Merijn

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13th October 2003, 10:23 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Is it just me, or are there more DIYers per capita in the Netherlands than anywhere else?

13th October 2003, 10:30 PM	#3
Wes Marquenie diyAudio Member Join Date: Jan 2003 Location: Enschede	And a lot of them in Enschede :-)

13th October 2003, 10:41 PM	#4
Hanzwillem diyAudio Member Join Date: Nov 2002 Location: Hengelo, The Netherlands	because dutch people are cheap. If they cannot afford expensive stuff they have to make it themselves .

14th October 2003, 03:05 AM	#5
blank527 diyAudio Member Join Date: Nov 2001 Location: Haarlem	And the sound is worse over here

14th October 2003, 11:51 AM	#6
Djomil diyAudio Member Join Date: Aug 2003 Location: Belgrade	Where is the pictures!!!!!!!!!!!!!!!

14th October 2003, 12:04 PM	#7
Hanzwillem diyAudio Member Join Date: Nov 2002 Location: Hengelo, The Netherlands	indeed, where are the pictures? they WAS one... still not packed in a nice housing...

14th October 2003, 04:57 PM	#8
Taco diyAudio Member Join Date: Nov 2002 Location: Place in the Netherlands	Do you have the pot at the input? You can replace the pot with a cheap stepped-attenuater. (make your own ofcoz). Dutch people are well educated, can write some words english, so they are hanging arround on foreign forums . And many people here in Holland have an internet connection.

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