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FREELANCE BRIEF
$10,000.00
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John Rodrigues
Aman Garg

New Hifi Sound System Project

Background:

I have developed an elite collection of vinyl records. I have listened to some of the best pro audio installations, namely Function One, Void, and KV2 in clubs around the world. I recently inherited the below components.

SpeakerLab:

2x HT3500’s with cast iron horns (8 ohms)
2x HD700B with cast iron horns (16 ohms)
2x W800A (4 ohms)
2x W1500D (4 ohms)
2x 3 way crossovers (unsure of the model)
2x wooden enclosure

Dynaco:

Dynaco Stereo 400 Watt amp
Dynaco PAT-4 Preamplifier

Onkyo:

2x TW1206a titanium drivers with aluminum horns (pulled from a pair of Onkyo Scepter 10’s)

Materials:

All of the SpeakerLab drivers are Alnico magnetic and seem to be well regarded given they are 40 years old. The Onkyo titanium horns were never sold in the states but are coveted by Japanese / Russian HiFi connoisseurs. The Dynamo setup was produces at the peak of transistor manufacturing and is well regarded from what I see. All parts are mint. Furthermore, I am interested in using ceramic cones for mid and low range frequencies given the properties exhibited. I am intrigue by Accuton cones and drivers, however, they are not cheap. I like Accuton’s 40 point floating DSP as well. I am interested primarily in hardware, but a floating point DSP seems to be well regarded.

Goal:

I am I’m interested in building a very high end system (end goal being commercial grade). I have been doing some research on the acoustical properties of concrete and its application to speaker enclosures (particularly low frequencies). I have various molds and have begun pouring casts to test with Yamaha HS50 as a bench mark. I have a decent budget, but would like to utilize as much of the existing technology I currently own. I have become interested in the application of 3D printing using composite materials (ceramic, beryllium, carbon fiber, aluminum, titanium, etc) as a way to recone the 8" and 15" woofers which would be mounted in cement enclosures.

As I am an audiophile and not an engineer - what are my limitations and how can my resources be best utilized?

Type of work > software-and-hardware
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Researcher
 · KanpurIndia
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Hi greg,
here are my thoughts :
I understand that since you intend to build a high end commercial system you are looking to integrate the tweeter, woofer and the amplifier together.

  1. since you wish to use the already available components, an audio crossover circuit is required which could be utilized from the one you already have. that depends on its frequency control, and compatibility with the available compression drivers.
  2. and since you already have the amplifiers, they could be used directly or if incompatible, a new one may have to be designed (but i think they can be used directly or partially).
  3. New cones/horns can be designed, 3D printed and tested with the available compression drivers. I don’t think that will be a concern.

The main work will be the integration of (available) compression drivers of woofer, the tweeter, audio crossovers and the amp circuit. Their control and compatibility will the limitation in this case.

I can help out in developing this.

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John Rodrigues
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Product and Experience Designer |Entrepreneur |Founder of D&D SmartLabs| Designwithjohn.com
 · PhiladelphiaU.S.
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Interested in designing the product digitally and 3d print it

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John Rodrigues
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Product and Experience Designer |Entrepreneur |Founder of D&D SmartLabs| Designwithjohn.com
 · PhiladelphiaU.S.
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whats the update on this ?

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John Rodrigues
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Product and Experience Designer |Entrepreneur |Founder of D&D SmartLabs| Designwithjohn.com
 · PhiladelphiaU.S.
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Is the task still active?

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