Misternavi Posted October 6, 2015 Posted October 6, 2015 Anyone remember these? I bought one off scumtree for $100+postage. Had a quick listen last night. not very dynamic, doesn't go as high and low as my monarchy audio sm-70. sounds a bit sterile as well. Maybe it needs a few more hours before it opens up. Anyone have any info on these? what power output? might change the opamps one day. Sent from my iPhone using Tapatalk
surprisetech Posted October 6, 2015 Posted October 6, 2015 Is it Class A? Or are there more output trannies that we can't see in the pics?
gat474 Posted October 7, 2015 Posted October 7, 2015 Greg Osborn used to sell these and said they were pretty good.
Misternavi Posted October 7, 2015 Author Posted October 7, 2015 Is it Class A? Or are there more output trannies that we can't see in the pics? not class a runs pretty cool. only two output transistors Sent from my iPhone using Tapatalk
Misternavi Posted October 7, 2015 Author Posted October 7, 2015 Greg Osborn used to sell these and said they were pretty good. do you remember the cost of one? Sent from my iPhone using Tapatalk
surprisetech Posted October 7, 2015 Posted October 7, 2015 not class a runs pretty cool. only two output transistors Sent from my iPhone using Tapatalk So with only 2 O/P devices in a stereo power amp my curiosity got the better of me. LM12 CLK is actually an IC not a single power transistor. From the datasheet: The LM12 is a power op amp capable of driving ±25V at ±10A while operating from ±30V supplies. The monolithic IC can deliver 80W of sine wave power into a 4Ω load with 0.01% distortion. Power bandwidth is 60 kHz. Further, a peak dissipation capability of 800W allows it to handle reactive loads such as transducers, actuators or small motors without derating. 1
PonyTail Posted October 7, 2015 Posted October 7, 2015 not class a runs pretty cool. only two output transistors Sent from my iPhone using Tapatalk The LM12CL is not an output transistor it is actually an 80W Operational Amplifier from National Semiconductor.
jimsan Posted October 9, 2015 Posted October 9, 2015 We sold some of these back in the day, John De Sensi (spelling?) design if I remember correctly.
Zaphod Beeblebrox Posted October 10, 2015 Posted October 10, 2015 We sold some of these back in the day, John De Sensi (spelling?) design if I remember correctly. Correct. Used to build excellent DACs. Power amps, not so much.
jimsan Posted October 10, 2015 Posted October 10, 2015 do you remember the cost of one? Sent from my iPhone using Tapatalk From memory they sold for about $1200, that was about 12 years ago. Cheers James 1
Misternavi Posted October 10, 2015 Author Posted October 10, 2015 From memory they sold for about $1200, that was about 12 years ago. Cheers James well then, i got a good deal! i've been listening to it in the last few days and as much as i prefer my pre power combo i would rather use this because in summer my lounge room is hot enough without the class a power amp running all day. i'm planning to upgrade the opamps to the Burson V5, change a few capacitors and in a month or two change the volume pot to a Khozmo 48 step attenuator. Sent from my iPhone using Tapatalk 1
Mat-with-one-t Posted April 23, 2016 Posted April 23, 2016 I bought my Music Labs integrated (same as above pic) new in 1997 (I think) for about $850? I still have it, and it's been used almost every day since! I even have the original manual. They only made 2 amps as far as I know - this integrated and a pre-power combo. Amp specs (integrated): ML808 mk11 80w/8 ohms 2-200kHz -3db <0.002% It came with a 20yr warranty!! And no, I never needed it! Still running perfectly after 1000's of hours, including some rather loud parties!! I recall taking quite a bit of time matching it to components, and some (more expensive) components sounded terrible through it! I settled on a Denon dcd615 tweaked by Benchmark, and some Osborn F1's. They are all still going strong! I love having a near all-Melbourne system! 3
Equaliser Posted April 23, 2016 Posted April 23, 2016 20 yr warranty? Now that's service. The enclosure reminds me heavily of the Melos units:
Mat-with-one-t Posted April 23, 2016 Posted April 23, 2016 Yeah 20yrs amazing, however I think they folded well within that timeframe! Build quality is lovely. Only thing going on it is the selector pot is starting to wear out a little - that's it! I'd love to trackdown their pre/power unit. Let me know if anyone has one!!
Mat-with-one-t Posted April 23, 2016 Posted April 23, 2016 Yeah 20yrs amazing, however I think they folded well within that timeframe! Build quality is lovely. Only thing going on it is the selector pot is starting to wear out a little - that's it! I'd love to trackdown their pre/power unit. Let me know if anyone has one!!
Mat-with-one-t Posted June 26, 2016 Posted June 26, 2016 http://www.ebay.com.au/itm/Music-Labs-DP102-DAC-/182183063228?hash=item2a6af4eebc:g:quMAAOSwzJ5Xbe6D And here's a very rare bird that's shown up..... 1
mondie Posted June 26, 2016 Posted June 26, 2016 Owned the pre/power combo, pretty average at best. I met John once when the power amp failed.
gat474 Posted June 26, 2016 Posted June 26, 2016 I had one of those DACS, it was okay but nothing special.
Mat-with-one-t Posted June 26, 2016 Posted June 26, 2016 It's funny. Maybe it's the fact that my Music Labs amp was the first big purchase when I got a "real" job? It's still great to my ears 20yrs later, and still gets regular use......
Misternavi Posted June 26, 2016 Author Posted June 26, 2016 i've now gutted the intergrated amp only kept the input selector circuit (removed the volume pot) and installed my Pass B1 buffer so now it's a pre amp. love the look of the amp! Sent from my iPhone using Tapatalk
Mat-with-one-t Posted June 26, 2016 Posted June 26, 2016 Nice idea! Yeah it's a great looking little unit. 20 yrs of use and mine still looks fantastic and I haven't done a thing to it. That's not a bad idea! Mat
Misternavi Posted June 27, 2016 Author Posted June 27, 2016 Nice idea! Yeah it's a great looking little unit. 20 yrs of use and mine still looks fantastic and I haven't done a thing to it. That's not a bad idea! Mat change the op amps in yours. does improve a bit. i tried it as a power amp bypassing the volume pot with a passive attenuator and that gave a bit more top end detail. but i think there are better amps for the price. Sent from my iPhone using Tapatalk
Mat-with-one-t Posted August 3, 2017 Posted August 3, 2017 http://hometheaterhifi.com/volume_3_1/v3n1q.html
Guest kab Posted August 3, 2017 Posted August 3, 2017 On 6/27/2016 at 6:13 AM, gat474 said: I had one of those DACS, it was okay but nothing special. I beg to differ,great DAC.
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