Recent content by JeffGB

Over the years (I've had mine more than 10 years) the Crown XLS has surprised me over and over. I have several other amplifiers with much higher SINAD but the Crown continues to please me more in sound, specifically the bass and midrange. Most of my other amps have much softer and less impactful...

Quantum entanglement?

Two audiophiles walk into a bar, go up to the counter and place their orders. The bartender responds "I'm sorry gents. We don't have any alcohol that I can serve you.". The two men, taken aback, reply "I don't understand, we can see the bottles full of alcohol behind you.". The bartender...

Led Zepplin Stairway to Heaven and anything else related to Lord Of The Rings that many uni students were reading at the time.

Yikes! Wolverines are scary! They can hold their own in a meeting with a grizzly!

Wow, I guess I just learned something on their website for the latest version. Apparently I was not understanding some basics. The website says it is "point to point wiring". After building many tube amplifiers using point to point wiring, I just found out that circuitboards can be considered...

This is very interesting. I have been streaming Amazon music for about 6 months and just played back some of my CD rips on JRiver media player with the same EQ settings used in JRiver as I use in EqualizerAPO/Peace. The difference in sound is not trivial to me. The CD rips are clearer, with...

My favorite interface/DAC volume control is the MOTU M4. It is a single rotation, with a clearly marked line on the knob with hard stops. I'm not sure about other's use but for me, I use the interface on a PC that browses the internet as well as streams music. The sometimes huge differences in...

While I don't want to minimize the problems some are having with the PA5, I also had noise and crackling start in one channel but I was able to unplug the TRS connections, and clean them with alcohol which, in my case fixed the issue. It seems that, along with the input devices being upset by...

I'm afraid I am now in the position of defending the OP, to a point. All these comparisons of more or less "dynamic" power are usually comparing apples to oranges. Let's take two identical amplifiers. The very same circuit and devices. One has a huge regulated power supply and one has a...

I would expect all of those coils to add RF to the unit and ruin it's performance. I doubt I'll ever hear about them again :). If they really had an idea that worked, they would provide test data. They may sell a few to well heeled hobbyist's but it's unlikely to go further, in my opinion.

I was quite interested in the Dunlavy speakers, back in the day. They used cheapish VIFA drivers that I used in a couple of designs I was working on at the time. They were using the D"appolito configuration (Dome tweeter in the middle, a midrange both above and below as well as woofers above and...

I've been listening to the 630's for a couple of days with EQ based on Erin's measurements but have become dissatisfied with the sound so today I removed the mid frequency EQ and left in the EQ to remove the bumps at 1.5k and 3k. It sounds much more natural in my room like that. The mids were...

Very interesting. I have the JBL Studio 630 on my desk at the moment. I've only had them for a few days but am quite pleased with them. I've just put in the EQ that Erin suggested and it does make a nice improvement. I've been using a Fosi V3 but I just changed back to the Crown XLS 1500 (driven...

About 3mm thick for carbon steel :). Thinner will warp and thicker will not quickly change temperature when you want it to.