Hello! The 2092 with the 4227 is extremely common in today's multi-channel class D amplifiers. Now with this in mind there are typical issues with this setup and dead time and switching speed is something that should be looked into if one finds a common issue. Also to note, you may have experienced common ground paths if you did not use a differential probe when probing the amplifier if you did not have the isolation transformer inline.
Todd, thank you much! BTW anyone who looks at the comments please check out his channel! Do you think they were depending on the NPN to buffer for the 2092s' Qg? I couldn't find a buffer IC as an in between. You're right the 2092s/4227 combo has been around at least since 2010 (I think). And is way too commonly used to be considered a "new circuit design" by Klipsch representative claims to their customer base. That being said, what does it take to be considered a "new circuit design"? Was it based on something old? What percentage of the old design had to change to be considered new? Rhetorical questions really. Non rhetorical though. Have you seen over heating problems with this design? Copy all on the differential prob. Any recommendations (brand ect) that I should use in the future?
@@HavingFunRepairs I have only seen dead time issues with the 2092 circuits that cause excessive heating of the output transistors. I am surprised that there is an NPN in front of the outputs? Most buffers like the ZXGD3005 that I am used to dealing with are to aid in the supply of gate currents. If I see a bi-polar transistor I would assume either a muting or shutdown method has been implemented but in the gate circuit itself is odd. Plate amps are a different beast!
@@ellensburgamplifier thanks again! And I cannot overstate the following. Please check out Todd's (E.A.R.S) channel and business if you are watching this video and reading the comments.
@HavingFunRepairs I have found a great subwoofer if your interested and this guy that makes them will talk with you as well and there not over priced .
Good analyses. Pure supposition and guesswork on my part, but I saw another model where mains earth was not connected to the chassis but only to the junction of two Y1 caps. There were effectively three grounds, chassis, 0V for the high voltage supply and a return for the low voltage supply. Leaking caps or mosfets etc can easily put high voltages on the chassis. Coupled with the thermistor not in the mosfet bank, adds to the keep away thoughts (the skull and crossbones in one of the manuals says it all). As you say, isolate your scope and siggen (either another transformer blocking caps or disconnect the earths, with the appropriate precautions).
@@ralphj4012 very true, of this model the fact that the power supply cord was not three pronged is the first indicator of this potential. A hard lesson was very much learned by me.
@@HavingFunRepairs May be worth investigating your test gear to see whether the damage is confined to small sections of the output / input circuits and can be repaired. Good luck.
@@yournightmare9999 the board would require reengineering. In some cases it may be simple to replace items like capacitors with a more reliable brand. However, when we are dealing with integrated circuits (IC) there is often no such thing as "better" with a pin for pin likeness. If I can put it that way. BTW neither the IC or MOSFET are bad components in and of themselves. There are just deficiencies in the design that should be addressed.
@@yournightmare9999 Tonewinner is what I went with and they are GREAT subwoofers please check them out on here there are a few reviews started to come out on these subwoofers and I love mine cheers..
@@dvspot I'm perfectly aware of this and I think I mentioned that the owner was getting a replacement. Just to be clear the intent of this video is to help individuals understand what they are buying based upon component composition and engineering. Especially given the cost of the product and how much money is being sunk from a consumer level with a technical perspective. But hey, if you are okay with sending back a 1600SW broken and getting a 1600SW replacement (which I believe will also break until they've made a few revisions to the boards) then that's up to you.
Hello! The 2092 with the 4227 is extremely common in today's multi-channel class D amplifiers. Now with this in mind there are typical issues with this setup and dead time and switching speed is something that should be looked into if one finds a common issue. Also to note, you may have experienced common ground paths if you did not use a differential probe when probing the amplifier if you did not have the isolation transformer inline.
Todd, thank you much! BTW anyone who looks at the comments please check out his channel!
Do you think they were depending on the NPN to buffer for the 2092s' Qg? I couldn't find a buffer IC as an in between. You're right the 2092s/4227 combo has been around at least since 2010 (I think). And is way too commonly used to be considered a "new circuit design" by Klipsch representative claims to their customer base. That being said, what does it take to be considered a "new circuit design"? Was it based on something old? What percentage of the old design had to change to be considered new? Rhetorical questions really.
Non rhetorical though. Have you seen over heating problems with this design?
Copy all on the differential prob. Any recommendations (brand ect) that I should use in the future?
@@HavingFunRepairs I have only seen dead time issues with the 2092 circuits that cause excessive heating of the output transistors. I am surprised that there is an NPN in front of the outputs? Most buffers like the ZXGD3005 that I am used to dealing with are to aid in the supply of gate currents. If I see a bi-polar transistor I would assume either a muting or shutdown method has been implemented but in the gate circuit itself is odd. Plate amps are a different beast!
@@ellensburgamplifier thanks again! And I cannot overstate the following. Please check out Todd's (E.A.R.S) channel and business if you are watching this video and reading the comments.
@HavingFunRepairs I have found a great subwoofer if your interested and this guy that makes them will talk with you as well and there not over priced .
Great video my friend cheers..😁
Thank you for watching and your support! Hopefully this video helps out a few people across the net asking the hard questions.
Good analyses. Pure supposition and guesswork on my part, but I saw another model where mains earth was not connected to the chassis but only to the junction of two Y1 caps. There were effectively three grounds, chassis, 0V for the high voltage supply and a return for the low voltage supply. Leaking caps or mosfets etc can easily put high voltages on the chassis. Coupled with the thermistor not in the mosfet bank, adds to the keep away thoughts (the skull and crossbones in one of the manuals says it all). As you say, isolate your scope and siggen (either another transformer blocking caps or disconnect the earths, with the appropriate precautions).
@@ralphj4012 very true, of this model the fact that the power supply cord was not three pronged is the first indicator of this potential. A hard lesson was very much learned by me.
@@HavingFunRepairs May be worth investigating your test gear to see whether the damage is confined to small sections of the output / input circuits and can be repaired. Good luck.
@@ralphj4012 perhaps a future video. For now I have replaced both.
What if you replace bad components for better one ?
@@yournightmare9999 the board would require reengineering. In some cases it may be simple to replace items like capacitors with a more reliable brand. However, when we are dealing with integrated circuits (IC) there is often no such thing as "better" with a pin for pin likeness. If I can put it that way.
BTW neither the IC or MOSFET are bad components in and of themselves. There are just deficiencies in the design that should be addressed.
@@HavingFunRepairs thanks 👌. Terrible design amp for money.
Went with another brand and Never Looked back great video thanks for all the information my friend..
@@TheNLHAZE hard to find something reliable
@@yournightmare9999 Tonewinner is what I went with and they are GREAT subwoofers please check them out on here there are a few reviews started to come out on these subwoofers and I love mine cheers..
This is a brand new subwoofer with a 5 year warranty.
Interesting. It's good to know they are providing that warranty up to 5 years. I'm sure there will be customers who will need it.
Klipsch will send you a brand replacement under warranty.
@@dvspot I'm perfectly aware of this and I think I mentioned that the owner was getting a replacement. Just to be clear the intent of this video is to help individuals understand what they are buying based upon component composition and engineering. Especially given the cost of the product and how much money is being sunk from a consumer level with a technical perspective. But hey, if you are okay with sending back a 1600SW broken and getting a 1600SW replacement (which I believe will also break until they've made a few revisions to the boards) then that's up to you.
@HavingFunRepairs Klipsch will send you a replacement plate amplifier. There is no need to return the defective amplifier to them.
I think you may still not be understanding the intent of this video. But thank you for your comment.