Ready to build my Gainclone - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 17th September 2004, 11:05 AM   #11
ebijma is offline ebijma  Netherlands
diyAudio Member
 
ebijma's Avatar
 
Join Date: Mar 2004
Location: Huizen
Quote:
Originally posted by Nuuk
So, if you have +/-35 volt rails before the regulators, you could regulate down to +/-27 volts, still leaving enough headroom as described above by Pedja.

But if you are having your transformer built, why not specifiy 27 VAC secondaries (although this will be a bit high if for any reason you decide not to stick with the regulated supply later)?
Thanks Nuuk,

Transformer with +/- 27 volts is an good idea.
This gives me about +/- 38 volts than regulated this to 30 +/- volts.


Quote:
Originally posted by carlosfm
One thing is using what you have.
But if I was going to order a custom-made trafo for using at +/-30v with LM338s, I would order 2*27v.
The ideal situation is between 5 and 10v voltage drop.
Point to the middle, that should be fine.
Thanks Carlosfm,

Good idea.
But can i use one lm338 for the positive and one for the negative rail and connect both channels?

So what regulator is the best?
I have two lm338 but if the lt1083/84 are better i would rather order these.
I think i will stick with the lm338 for now.
__________________
Music is what i want, music is what i need
  Reply With Quote
Old 17th September 2004, 12:53 PM   #12
Banned
 
Join Date: Mar 2003
Location: Lisbon, Portugal
You can use a pair for both channels, it works fine.
I haven't tried the LT1083.
  Reply With Quote
Old 17th September 2004, 01:38 PM   #13
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
ebijma - you will gain a lot from reading the previous threads on regulated supplies for GC's (on this forum).

We talked about things like adequate heatsinking, use of LM338T compared to LM338K and most of the other issues that you will need to know.
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 17th September 2004, 02:17 PM   #14
ebijma is offline ebijma  Netherlands
diyAudio Member
 
ebijma's Avatar
 
Join Date: Mar 2004
Location: Huizen
Quote:
Originally posted by Nuuk
ebijma - you will gain a lot from reading the previous threads on regulated supplies for GC's (on this forum).

We talked about things like adequate heatsinking, use of LM338T compared to LM338K and most of the other issues that you will need to know.
Hello Nuuk,

I know i've bin reading allot about it on this forum.
But my questions still remained.
So i placed a thread of my own.
My question wasn't about heatsinking and not about the use of LM338T or the LM338K.
But thanks anyway.
__________________
Music is what i want, music is what i need
  Reply With Quote
Old 17th September 2004, 09:23 PM   #15
Banned
 
Join Date: Aug 2002
Location: New York, NY
Send a message via AIM to yldouright Send a message via Yahoo to yldouright
ebijima

I would like to know how you built the phono preamp for your gainclone? I am thinking about integrating a phono section into a gainclone and running the whole thing in an old Kenwood amp case. Are you putting the phono stage in a separate case?
  Reply With Quote
Old 18th September 2004, 05:49 AM   #16
ebijma is offline ebijma  Netherlands
diyAudio Member
 
ebijma's Avatar
 
Join Date: Mar 2004
Location: Huizen
Quote:
Originally posted by yldouright
ebijima

I would like to know how you built the phono preamp for your gainclone? I am thinking about integrating a phono section into a gainclone and running the whole thing in an old Kenwood amp case. Are you putting the phono stage in a separate case?
Hello yldouright,

The phone pre is not specialy for the gainclone.
I build it in a separate housing.
Read all about it here....

DIY phono preamp - cheap and simple!

Its a simple but very good sounding pre.
__________________
Music is what i want, music is what i need
  Reply With Quote
Old 18th September 2004, 01:05 PM   #17
Banned
 
Join Date: Aug 2002
Location: New York, NY
Send a message via AIM to yldouright Send a message via Yahoo to yldouright
ebijma

The link "has exceeded its bandwidth" but I will check it again. In the meantime, why did you decide to build it in a separate case instead of making it a stage within a larger gainclone? From reading Kuei Yang Wang and others, it seems that the shorter the signal paths the better so I am assuming that integrating the phono stage would have resulted in better sound. Was this a power supply issue?
  Reply With Quote
Old 18th September 2004, 04:21 PM   #18
ebijma is offline ebijma  Netherlands
diyAudio Member
 
ebijma's Avatar
 
Join Date: Mar 2004
Location: Huizen
Quote:
Originally posted by yldouright
ebijma
In the meantime, why did you decide to build it in a separate case instead of making it a stage within a larger gainclone? From reading Kuei Yang Wang and others, it seems that the shorter the signal paths the better so I am assuming that integrating the phono stage would have resulted in better sound. Was this a power supply issue?
Hello yldouright,

I build mine for use in the living room, i have a jvc set there and i wanted to connect a turntable to it.
The gainclone im going to use in a other room.
Thats a kind of listing room.
In the future im going to build another phono pre and a non oversampling DA converter for use in my listing room.
__________________
Music is what i want, music is what i need
  Reply With Quote
Old 18th September 2004, 04:48 PM   #19
Banned
 
Join Date: Aug 2002
Location: New York, NY
Send a message via AIM to yldouright Send a message via Yahoo to yldouright
ebijma

Understood. Which DAC are you looking at to use with the Gainclone?
  Reply With Quote
Old 18th September 2004, 04:56 PM   #20
ebijma is offline ebijma  Netherlands
diyAudio Member
 
ebijma's Avatar
 
Join Date: Mar 2004
Location: Huizen
Quote:
Originally posted by yldouright
ebijma

Understood. Which DAC are you looking at to use with the Gainclone?
Im planning on building the DDDAC 1543.

Its on this website.

http://www.dddac.de/

Then klick on the NEW !! DDDAC 1543 button.
__________________
Music is what i want, music is what i need
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
i am ready to build Aleph-X space2000 Pass Labs 26 14th July 2008 03:34 AM
I'm ready to GAINCLONE!!!! davidlzimmer Chip Amps 22 6th May 2006 12:47 AM
Ready to build ZV9 - Need heatsinks! Paul Ebert Pass Labs 15 29th April 2006 09:38 AM
Ready to build! hawkfeather Solid State 2 10th February 2006 06:05 AM


New To Site? Need Help?

All times are GMT. The time now is 12:15 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2