dhl93449
Responses from dhl93449
| Amp Cap Look for these things. There should be a voltage rating on the side (ie 35 V). Measure the diameter and height. Look for the name of a manufacturer (like Panasonic, Nichicon, CDE, etc). Finally, look for the capacitance, measured in uF (micro fara... | |
| 3 preamps with transformer hum, DC on the line? DC on an AC power line is highly unlikely unless you live in the third world. You can easily check this with a DVM. Just set it to DC volts and put it across the line.The AC frequency is set at the generating power station and cannot be "adjusted"... | |
| nakamichi vs threshold LionelploufJanzen makes a "kit" for Horizons (L110s) but I don't think those are correct for the L112.If you can find a schematic, I would build my own. Thats what I did for the L212. The advantage to building your own is you can upgrade the compo... | |
| Powered subwoofers running into power amp? The signal from the bass subs is not amplified. It is just passed from input to output by straight wire. It can be sent to power amps directly.The only issue is loading of your mixer output with the additional input impedances (resistive and capac... | |
| Ultrasonic Oscillation ItalianAnything you connect to the speaker output could potentially create an unstable situation, if the capacitance of the wiring is too high.But this is very unlikely with a sub unless you are using exotic cables.Did you upgrade interconnects pr... | |
| Passive volume regulator suggestions You could also consider Goldpoint attenuators. They use high precision 50 ppm 0.1% resistors and have balanced as well as single ended products.If you want a special curve or ladder network, contact Arn Rotecap (he's the owner) and he might build ... | |
| Should I buy a new amplifier; and if so, what? If caps are exploding, there is potentially a design problem with the amp. Yes, age might be a factor, but I have electronics products built by Techtronics and HP that go back to the early 70's and their power supplies are not blowing up or caps s... | |
| D class amps with Soundlab speakers Class D amps get away with "lighter" power supplies because they are filtering at many KHz instead of the 60 -120 Hz of linear supplies. Thus, they can use much smaller capacitors for a given current or power rating.Look at PC power supplies, for ... | |
| Ultrasonic Oscillation This can occur due to loading effects on the amplifier, and not just due to parasitic feedback as described above.Or it could be due to an amplifier that was not designed with enough "stability" in the first place.For any amplifier using feedback ... | |
| Bob Carver LLC Black Beauty Review Chashas1Long live the Phase Linear 400. A scaled up 70's op amp. | |
| nakamichi vs threshold I thought at one time back in the late 70's early 80's that Threshold designers designed the high end Nak stuff...Not sure about the power amps but the Nak CA-7 and CA-7 preamps were designed by Threshold because Threshold was purchased by Nakamic... | |
| preamp out instead of MC transformer Seems to me, your question is not "stupid", but there are some factors to consider.In concept, you just want a buffer amplifier with about 20 dB of gain (because that is the average difference bewteen MM outputs and MC outputs, a factor of ten) to... | |
| Speaker stands for B&W 804s Mechans:Have you priced brass items lately? Thank the Chinese. You might find that older posted prices have risen dramtically. I compared the pricing of solid brass balls (2" diameter) to Mapleshade 2" cylindrical footers, and the costs were prett... | |
| Speaker stands for B&W 804s Brianmgrarcom:You are correct. The info on the Soundanchors website is incorrect. Apparently the earlier versions did bolt up the rear two mounting holes, but the design was changed because folks were damaging their B&Ws by trying to move the ... | |
| Best speakers in the 3000 -5000 range I have B&W 804s and have found their apparent problems to be highly correlated to what they are being fed. You have the Nautilus version which is a model earlier than mine. I am using Parasound JC-1/2 electronics with a HSU subwoofer and the s... |