FS: Class A Preamp, Marsh Sound Design MSD-P2000 w/ new Harmony Remote Up for sale is my Marsh Sound Design model MSD-P2000 preamplifier. This is an all class A high resolution line level preamp that retails for $1195. Many reviews feel it is a bargain at that price. It is being sold because my main system is now all tubes.

Mar 4, 2025 · Hello DIY Audio Community, We are a team of engineering students and audio enthusiasts working on a new approach to speaker design that leverages AI-driven parametric modeling and large-scale 3D printing to create customizable, highly optimized sound systems. Our goal is to explore whether these...

is the dominant design for most high efficiency bass drivers, for a number of reasons. First, a typical high efficiency woofer has a highish free air resonance (Fs). If this type of a driver is put in a sealed box, the system resonance (Fb) becomes too high for decent bass response.

Feb 7, 2015 · The functional part is the surface shape that sound waves bounce off of (at different time delays and diffused over an area). See Sound Diffusers 101: Free Designs for DIY Diffuser Panels for an animation, good explanation and other designs for diffusers. (Mine is hand-optimized to be a 3' wide design using least expensive US wood).

May 20, 2020 · So here it is, for everyone to share their own way of converting their design into something real and listenable. Show off! 🙂 So far the tool can generate: - STL file, - coordinates files to be imported into Autodesk Fusion 360 as splines and/or smooth surfaces.

Feb 16, 2022 · The traditional solution is to design the speaker (driver), box, and port so that damping built into the driver also provides the necessary damping for the port. If the design is done properly, it works very well. The speaker's own damping controls air motion in the port, and you get nice extended bass without "one note bass" problems.

Dec 15, 2024 · hi all, first 3 way crossover design here so im looking for guidance the tweeter is 1x beyma cp21/f which is 8 ohms - 105dB 1/@1m the midrange drivers are 2x B&C 6nsm51-8 in parallel for a 4 ohm load "100 dB, Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance" the mid bass...

Jan 19, 2025 · It worked on the fact that the product S*(Ri par Rload) had a maximum at very low Ia so the voltage gain of a single pentode could be over 70 dB. This was more than high enough to compensate for the decreased Bw, via NFB IOW it could result in a simpler and cheaper design without sacrificing performance.

Mar 17, 2002 · These are only recommendations of course, everything depends on your drivers, your design ideas and your taste. Don't forget to check the impedance of your speakers regularly while trying different options, cause the impedance curve can tell you many, many things about the behaviour of your design Regards Stan P.S.

Mar 1, 2023 · Do you need to design the box or make drawings? I use MacSpeakerz for my design work and VectorWorks for doing drawings. The first has not been available for a couple decades, the latter is not cheap. If i need a horn or TL i tap Scottmoose’s design expertise and his collection of software tools. dave