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Old 30th December 2012, 10:04 PM   #1
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Default Studio monitor amp design

I recently bought these monitors as is. replacing the transistor repaired them. While I had them disassebled I was surprised at how cheaply they were made. I am no expert and I have heard two schools of thought. One being that less components can mean a more direct signal path. The othe being many factors that are beyond my knowledge. I had a harmon kardon amp that sounded great. When I opened it to recap it, I was discouraged by the numerous components inside. It was rated at much less power than these monitors. They don't sound terrible but I wonder if I am hearing what I want to hear.
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Old 30th December 2012, 10:22 PM   #2
jaycee is offline jaycee  United Kingdom
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Lots of components isnt always bad as long as they are being used well.

I really dont like that power amp circuit. Ugh. Even the higher end stuff like Mackie are using LM3886 chip amps for this, and with good reason - they work well in this application.
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Old 30th December 2012, 10:44 PM   #3
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Just as I expected. I suffer from POwer of suggestion. I remember a guy at the music store was told me that we have an "8 second audio memory". I was so stunned that I almost dumped $2000. On the drive home, I thought "That's funny, I'll never forget that bongo hit I heard 10 years ago in a song that I had been familliar with for 30 years"
Thanks for confirming that It's time to go back to a good old fashioned 50 wpc amp and some decent speakers. I can sell these and put some money back in the bank.
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Old 30th December 2012, 10:47 PM   #4
CBS240 is offline CBS240  United States
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Agreed with the output stage, Ugh. Condensing many circuits onto a single PCB makes it appear there are lots of components, and there is. But it is the whole amp circuit and all of the support circuitry. There is nothing wrong with this concept.
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Old 12th January 2013, 05:28 AM   #5
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How would this circuit compare in Quality with Nakamichi Pa, Hafler DH-220, Harman Kardon HK, Audio design etc.? These are amps I've used in studio.
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Old 12th January 2013, 06:12 AM   #6
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Hard to tell.
PA-Amps are rarely too far apart in sound-signature.
The Op-Amps used here is OK for PA, but I guess there is a bit to gain only swapping them for some better typesm even the 5532.
The TL07X series is to me a tiny bit "sharp" so I don-t use them even in my own PA-projects.
Must look at the schematics and peerhaps find one to listen to before the final verdict is given.
I would assume this one is a class or two below the Naka and HK.
I have never heard the Audio Design amps, aso I wouldn't know.
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