STK series amp modules- any good? - 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 6th June 2012, 03:45 AM   #11
Tomom is offline Tomom  Australia
diyAudio Member
 
Join Date: Dec 2010
Quote:
hello.
some years ago i have used the stk 439 and stk 460.and i had a receiver with stk 084g and a fisher amp with stk4171.........
the sound was acceptable...............but i think they die suddenly when there is a short at the output.
nowadays i prefer the national lm types (1875,1876,3886......) over the stk's, because they are cheap,tiny,easy available and with a good psu they sound amazingly well.
greetings................
Depends which STK do you compare with LMs...STK4048XI is far better then LMs mentioned
  Reply With Quote
Old 17th June 2012, 04:48 AM   #12
diyAudio Member
 
Join Date: Jun 2012
Hello, i was also considering the same STK series but after looking at what others are saying Im looking into more info. I was considering the STK433-130-E or 150-E series. not many parts needed to make. look at data sheet for schematic and applications. also can be bridged as well. hope this helps
  Reply With Quote
Old 19th June 2012, 05:02 PM   #13
diyAudio Member
 
gain wire's Avatar
 
Join Date: Nov 2004
Location: NCR
Hi people, would anyone care to comment (out of experience, preferably) on the STK0050-II? I have two of these in a Marantz SR5100 and am just curious at the way Marantz wired it up to the two transistors... Do they use the transistors as protection?

thank you

ps: sorry for some odd reason I am not able to upload a schematic. maybe it's IE9...
__________________
Trans-directional-servo-logamp non-zerocrossing autogain compressing thingamajig
  Reply With Quote
Old 19th June 2012, 05:07 PM   #14
diyAudio Member
 
picowallspeaker's Avatar
 
Join Date: Apr 2007
I believe the STK 0050 is an output stage , probably a darlington pair .
I rescued a Kenwood amplifier with two STK 0070 , powered by a + and (-) 50 V supply .
It worked fine ...till it lasted !
  Reply With Quote
Old 19th June 2012, 05:27 PM   #15
AKN is offline AKN  Sweden
No snake oil
diyAudio Member
 
AKN's Avatar
 
Join Date: Aug 2005
Location: In the middle of Sweden
Send a message via MSN to AKN
Hi,

STK 0050 - VBE, driver and output. Datasheet: STK0040 datasheet pdf datenblatt - List of Unclassifed Manufacturers - OUTPUT STAGE OF AF POWER AMP ::: ALLDATASHEET ::: among many other STK's
Attached Images
File Type: jpg STK-0050.jpg (54.4 KB, 449 views)
__________________
/ Anders
  Reply With Quote
Old 19th June 2012, 11:34 PM   #16
Tomom is offline Tomom  Australia
diyAudio Member
 
Join Date: Dec 2010
Hope this may help too...

On STK433-130, looks like it has been discontinued; also could not find equivalent schematic diagram (apart from block diagram), if someone has, please can you post it here for us too see...
Attached Files
File Type: pdf STK0050 II datasheet.pdf (111.7 KB, 35 views)
  Reply With Quote
Old 20th June 2012, 06:40 AM   #17
diyAudio Member
 
Join Date: Jun 2012
the STK433-130 still lives through MCM electronic store for $10.51 and about average at a few other stores i see online... so they are still out there. here is the website to place a order the STK433-130.

Sanyo Thick Film Hybrid IC 2 Channel Class AB Audio Power IC, 150W x2 | STK433-130-E (STK433130E) | Sanyo

Hope this helps. also you can get the schematic to build this amp and also in blt mode as well for 300 watts RMS (or near).
  Reply With Quote
Old 6th March 2013, 09:45 PM   #18
tvissoc is offline tvissoc  United States
diyAudio Member
 
Join Date: Mar 2013
Default STK specs

I'm reluctant to resurrect an old thread.. and especially since this is my first post on the forum... Does anyone have a reference for specs on the various STK amps? Do the numbers indicate anything other than just a model #? I have an old Realistic STA-785 receiver (mid '80s vintage) that I left powered on for a couple days with the volume down and totally improper speakers attached. Receiver doesn't "amp" any more. I'm wondering whether to suspect the STK4182II. I find replacements on eBay, etc. I'm really new to electronics testing. Is there a novice guide to simple testing with a VOM?
  Reply With Quote
Old 8th March 2013, 03:34 AM   #19
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
Knowing what pins are the inputs and having a multimeter, it is easy to confirm whether an STK is good. Without the audio playing, measure the voltage on the two pins(put DMM on these two pins) and read the voltage.

Gajanan Phadte
  Reply With Quote
Old 8th March 2013, 01:39 PM   #20
tvissoc is offline tvissoc  United States
diyAudio Member
 
Join Date: Mar 2013
Quote:
Originally Posted by gmphadte View Post
Knowing what pins are the inputs and having a multimeter, it is easy to confirm whether an STK is good. Without the audio playing, measure the voltage on the two pins(put DMM on these two pins) and read the voltage.

Gajanan Phadte
Power inputs? Signal inputs? Referencing a sample circuit, looks like the STK4182II has +Vcc on pin 11. -Vcc should hit pins 14 and 9. 10 and 13 are R/L speaker +. 1 and 18 are R/L signal inputs. 3, 16 grounded.

http://www.datasheetcatalog.org/data...yo/STK4182.pdf

Last edited by tvissoc; 8th March 2013 at 01:47 PM. Reason: more data.
  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
Quality of Hammond 300 series power transformers compared to 200 series? G Tubes / Valves 10 3rd August 2012 07:32 AM
Nad 1300/2600 Monitor Series Amps - any good? trirod Solid State 2 26th November 2008 03:40 PM
Are these Velleman speaker protection modules any good? Spasticteapot Parts 3 7th November 2006 06:43 PM
UcD modules - can the modules work without the input op-amp? beppe61 Class D 8 11th October 2006 07:35 AM
How good are the Dayton Reference Series woofers? tcpip Multi-Way 12 23rd March 2006 06:58 PM


New To Site? Need Help?

All times are GMT. The time now is 07:24 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