dhl93449

Responses from dhl93449

Bargain power amp for PC nearfield speakers?
Well, if you use your coax out and a Bryston BDA-1, that's a different story.There still may be an issue with digital out from sound cards. Look to that site computer Audiophile.com. There is a lot of discussion there about the sonic issues of usi... 
Impressions of PS Audio GCPH
Had more time to investigate the noise issues and found that the large filter caps in the power supply were not soldered well to the PCB. PS Audio uses plated through holes as part of the signal path and the copper in these holes (that mount the f... 
Parasound Halo A21 - Power conditioner?
I owned an A21 and also have the schematics. There is a minimal amount of power supply bypassing in the power supply to absorb line tranients, but nowhere near as much as in a good line conditioner like the PS Audio or the Furman (and no MOVs or o... 
Think you know analog?
After I watched the vid you linked to, could not help but notice the other vids claiming you can clean records with WOOD GLUE! Is this the 21st century or what??? 
Can I Degauss my vinyl ?
Demagnetizing anything that does not contain iron is pure hocus pocus. A demagnetizer will not affect (I mean REMOVE) static charges either, although it might move them around.Same with demagnetizing CDs. They only contain Al (or maybe gold) films... 
Anti-Skate dial-How to set it? + a bonus question
No one has mentioned the use of test records and monitoring the relative Left channel vs Right channel output voltage levels. If the anti-skating force is not properly set, it should show up in different left vs right output levels. I'm not sure h... 
Automatic Turntables
Check out the 80's versions of the Technics tables. The SL-1300 MK2 was quartz locked speed controlled fully auto version(I have the SL-150 MK2, the fully manual armless version) or the SL-1400 MK2 semi automatic version.You may be able to find th... 
DIY Bearing availability
You might also check an industrial components supply outlet like Graingers. I think they carry an assortment of bearings:http://www.grainger.com/Grainger/bearings/power-transmission/ecatalog/N-aoj?xi=xi 
Capacitance loading for AT 150 mlx cart
An update.I built the 5:1 attenuator and connected it with custom cables I built using DH Labs BL-1 interconnect wiring. Got the capacitance of the cables and the arm wiring to 155 pF. With these cables connected to the ADC LMF arm and the AT 150 ... 
Low Amplifier Loads / frequency range
Generally speaking the impedance of a driver is dependant on the type of driver and manufacturer.Large bass drivers often have an impedance dip at the lower end of their frequency response. Whatever amplifier you use, it must be able to drive the ... 
Hum, buzz, snap, crackle and pop?
Lewm:Transistors, particularly bipolar, can produce pops and ticks as well. This is called "popcorn noise" and is a form of low frequency thermal noise.The transistor may function normally otherwise. Replacement of transistors with leads is not di... 
Boron Cantilever and Ruby Cantilever, Why Ruby?
Mechans:Diamond and sapphire are extremely brittle, in that you cannot bend or flex them without breakage. I did not mean they were not strong materials.In a long needle shaped (ie length>>>diameter) structure like a cantalever, they woul... 
Can a variac be used to maintain constant voltage?
Kind of late to the party here, but I have used a product built by Furman called the AR-15 series II, which regulates AC output voltage. It works like some of the products mentioned above, where it has a multi-tapped transformer tapped every volt ... 
Long cord from Power Plant to amplifier?
I would put the Power plant so it is located between the power amps so the power amp line connects are the shortest they can be but equal. Then I would run a longer extension to the rack with the low power components. Long power wiring to low powe... 
What is the best way to replace a blown sub amp?
I would see if you can get a direct factory replacement from the manufacturer. Many companies will sell you a replacement part. You may be able to install yourself, depending on the actual dammage.If there has been a lot fried and melted inside th...