Pro Audio Design Forum

I only have one DL103 which I'm using. I could send you the SPU I have with or without the transformer. It's pricey so you'd have to be careful but I'm happy to do it. It would be a good test since the output is so low. I destroyed the stylus on a DL103 a while ago. I can see if I still have it.I co...

I'm using the Lundahl 1678. 1:16 for the Denon 103. I have a 3k83Ω termination resistor in parallel with the Shure SE22 47kΩ input termination resistor. The SE22 data sheet says there is 54dB of gain. I'm using at least 50dB gain in this setup to get 7cm/sec lateral to +4dBu. I have an extra set of ...

I am generally not a fan of audio transformers, and even made a solid state MC version of one of my preamp kits back in the day. That said an audio step up transformer could really help dealing with such low Z transducers. Since we are dealing with such low power levels the transformer doesn't need...

Any idea of the Rs of these 3 groups of MC cartridges? Off the top of my head I'd say that an Ortofon SPU would be in the low output category with a very low source impedance. A Denon 103 would be in the medium category and the DL-110 that Wayne mentioned would be in the high category. The SPU is m...

The best phone conversation I've heard lately was when i was visiting Richard at Leeds Radio. He suffers no fools. He got a call from someone on the sub continent calling themselves Steve. Before the guy could get a word in Richard asked him for a good biriyani recipe. He wouldn't quit. Finally the ...

In fact most High Trackability cartridges have too much compliance (see later) A non-intuitive point is that the compliance resonates with the tip mass, usually within the audio band so a lower compliance often helps trackability . I'm glad to see this in print. I have come to the same conclusion. ...

The noise spectrum of buzz and hum is very different from rumble, pops and ticks. I'd expect to easily hear improvements. A good record should have a noise floor of about -65dBu. I'm seeing that -65 dBu number and wondering how far above 0 dBu is the "overload" point. Or, IOW, what is the...

The noise spectrum of buzz and hum is very different from rumble, pops and ticks. I'd expect to easily hear improvements. A good record should have a noise floor of about -65dBu.

Looking good Wayne. This is something I've wanted for a long time. Seeing the measurements is enlightening. Pretty much confirms what I've suspected for a while. Reducing the hash that creeps into every setup will do far more to improve sound quality than another zero or two in the THD or noise floo...

From what I understand the laser turntables are not an unqualified success. I haven't used one but I've been told that they produce strange artifacts when they don't track properly. Worse than a good old cartridge.