mikebse2a3

JC… I really like the small speaker system with the K510…!!! What driver are you using on the K510..?

I agree with JC and highly recommend the Jensen ISO-MAX units and use them in my systems. FYI …. Jensen recommends the use of their PI (Input Transformer designs) whenever you have the option over their PO (Output Transformer designs). The Pl-2XX with input type transforms will give better performance than the PO-2XX unless you absolutely need to run an output transformer type. Some info for anyone interested…

Very nice John… 👍🙂

This place is much better with you Gil … 🙂

@Rudy81 I thought it would be nice to edit your photo so we could see more details of the speakers but if for any reason you would rather I didn’t just let me know and I will delete it.

Based on my experiences with the Heritage Jubilee and the quality and extension of it’s bass reproduction I would start with no additional subs and if for some reason I felt the need for another sub due to room acoustics/setup limitations then I would personally only consider the appropriate sized (due to be introduced in the near(?) future) horn loaded Heritage Subs to maintain the quality of the system with the Heritage Jubilee.

Sounds like a really nice space kippy with the potential for an amazing listening experience. The soundstage/imaging can be amazing with the Heritage Jubilee when installed into a good acoustical space and is a highly valued aspect of sound reproduction speaking for myself. I’m curious what loudspeakers have you been using and is your current system in the same space where the Heritage Jubilee will be installed?

I’m curious… is this a multiple purpose space or dedicated listening room where you will have more freedom to integrate the loudspeakers and use acoustical treatments as needed…? Would love to see any pictures you care to share of the listening room. miketn🙂

@kippy congratulations on your purchase of the Heritage Jubilee which are amazing…!!! Your MC252 will most likely be a very good match and well worth giving them a chance before trying anything different. Getting the loudspeaker/room integration optimized is where the magic happens… 🙂👍 miketn

List Prices seem to need updating in the article… 🙂

I suspect it might be the best way to obtain desired Q values at the frequencies of interest in a particular circuit as it relates to compromises in building real world inductors.

Would love to have seen this 😀

Thanks Michael for sharing the pictures and details of what Roy has accomplished with the continuing evolution of the awesome La Scala and Klipschorn. I certainly missed being there with all the Boneheads 🙂 miketn

RIP Bob Heil

Interesting…. But I would suggest the Heil AMTs be vertically aligned and as close to the K402 as possible to minimize image smearing assuming you want the best imaging possible with this configuration. miketn 🙂

I was fortunate to have met Larry several times and our conversations were always interesting. Rest In Peace🕊️

Reading through this thread it sure seems apparent to me that it is the Decware amplifiers are the source of your Hum Issue. The question then becomes why are you experiencing it at such a high SPL level at the listening chair. This makes me ask how you experience the Hum when you walk around in the room.? Do you hear it as significantly louder and quieter as you move around and also as you measure it with your SPL Meter? I could see in an unfortunate situation where a possibility that room modes at 60Hz/120Hz could be coupling very efficiently with the loudspeaker and listening positions that would exasperate the inherent by design hum of these amplifiers. An unfortunate combination of room dimensions could lead to Room Modes that could easily add +12db to the Hum Level at some areas of the room. Just a thought anyway and I hope you find a solution to this problem… 🙂 miketn

ChrisA posted some information here JC

Well the DPH paper say’s Neglible Improvement past 4ft so whatever gives you peace of mind 🙂

I hope it does…. I have the “The Vacuum Tube Logic Book - Second Edition” and none of the resistors or capacitor values are on the schematic and it also appears to have a mistake (ie: connection line is missing from 2.7k resistor to DIP Switch Resistors) as seen in the schematic drawing above where the DIP Switch resistors are not shown as being in parallel when in the “ON Position” with the 2.7k resistor shown in the above schematic. Yes you should be able to determine the values with a meter.

@shawnwes You can find more pictures here if you haven’t seen these before that might help you. https://www.stereonet.com/forums/topic/248051-withdrawn-or-relisted-fs-vtl-the-ultimate-preamplifier/ Here are a few pictures of a VTL Ultimate Pre-Amplifier and the schematics I was able to see before I was locked out and requested to join the group. This one was on another topic post on the same website.

I’m thinking this was posted in the past here but I thought this nice Interactive Frequency Chart may be a helpful tool for those trying to evaluate their systems performance by being helpful in narrowing down what areas they feel could need improvement. This link will take you to the actual “Interactive Frequency Chart” https://alexiy.nl/eq_chart/ Example: This picture below shows the Instrument Data for MALE VOCAL miketn🙂

I can play a CD but not so much a guitar 😁

Finally here..!!! Pre-ordered 6 months ago and sounds great 🙂👍

Based on my own experience with the DSpeaker and my La Scala AL5 I believe with some fine tuning the OP will be able to reach a place of satisfaction with more of his music being enjoyable. The “emphasis” in the 100Hz - 200Hz region is audible and I personally consider it a significant improvement and that a more accurate reproduction of the recordings are achieved when it’s effects on the recordings are removed. I respectfully disagree and I certainly don’t believe the OP, myself or others discussing the “emphasis” in the 100Hz -200Hz region of the La Scala AL5 is wrong or misleading anyone. It’s really simple in my mind and that is if you want to fine tune and thus improve the reproduction of the La Scala then implement the PEQs that Roy has suggested for active user who have that capability. This is easily achieved by active methods but my guess is that it is impractical in passive crossover designs (impedance would drop to low in value with compensation network) or “I believe” Roy would have implemented it in those as well. @Flevoman wants the most enjoyment he can achieve from his system as I do and I believe most anyone on this forum wants so he is searching for the answers to achieve that goal wherever it leads and thus started this thread simply to find answers and solutions. miketn🙂