Model ONE Build - S/N 0005 & 0006

[laatsch55]

Crank it to 11 and hold on…

My kinda guy right there!!

 

[laatsch55]

I’ll pull together the relevant White Oak documents for setup and operation and include with the amp.

Thank You Sir!!

 

[laatsch55]

Have you run it hard enough to need forced air cooling?

 

[Hexis22]

Have you run it hard enough to need forced air cooling?

Not yet.

Unfortunately cost and availability of replacement drivers for B&W prohibit getting carried away with the volume and duration.

Although it will be fully tested to clipping into water cooled 8 Ohm water heater loads before shipping.

 

[Hexis22]

With the amount of headroom designed into this amp, my initial listening tests produced amp temperatures only slightly above ambient. Although Lee will provide the true litmus test on output power and resulting amp temperature…

This is truly a very special amp Joe has designed.

 

[Gibsonian]

With the amount of headroom designed into this amp, my initial listening tests produced amp temperatures only slightly above ambient. Although Lee will provide the true litmus test on output power and resulting amp temperature…

This is truly a very special amp Joe has designed.

I do think Lee is the best recourse for this portion of the testing............Lee do you have spare drivers ready??

 

[Gibsonian]

I do think Lee is the best recourse for this portion of the testing............Lee do you have spare drivers ready??

Lee has a particular set of skills, skills he has developed over a long period of time, skills that are a nightmare for drivers like in speakers......................

 

[Vynuladikt]

What a beautiful amp! And knowing the quality of the design and components it is definitely world class.

 

[laatsch55]

I do think Lee is the best recourse for this portion of the testing............Lee do you have spare drivers ready??

Absolutely!! Somebody has to do it.. .I should be able to warm those heatsinks up.
Have 4 spare woofs, 2 spare 4592's, 4- 4592 diaphrams, and 4 spare DE 10's...and looking for diaphrams for the DE 10's. Not a lot aroubd right now for some reason..
B&C bought Eminence correct?

 

[laatsch55]

Lee has a particular set of skills, skills he has developed over a long period of time, skills that are a nightmare for drivers like in speakers......................

Yep.. and then there's Randy, he was clipping a 700 SerII WOPLon his K's the other day...

 

[Gibsonian]

Absolutely!! Somebody has to do it.. .I should be able to warm those heatsinks up.
Have 4 spare woofs, 2 spare 4592's, 4- 4592 diaphrams, and 4 spare DE 10's...and looking for diaphrams for the DE 10's. Not a lot aroubd right now for some reason..
B&C bought Eminence correct?

Yes, thanks to you I just learned that. Looks like you are ready to field test the Model One

 

[laatsch55]

As well as anyone Scott....

 

[J!m]

What gage steel will she weld?

 

[Gibsonian]

What gage steel will she weld?

Duty cycle significantly better on thisun sounds like

 

[Hexis22]

See below for the build sequence of amp #0006.

I'll start by saying this sequence is what I used based on personal preference and may deviate from White Oak documents (use at your own risk...).

I started with populating all PCB assemblies:

 

[Hexis22]

Next was housing assembly.

 

[Hexis22]

Install completed PCB assemblies on back wall.

Start the heavy duty work of placing the toroid transformer.

 

[Hexis22]

Place the separate audio control boards and attach to backplane PCB's.

This design has very direct and compact connections for the critical amp control boards to the backplanes, unlike loops of wire in the traditional Phase Linear configuration.

Place the power control PCB, rectifier, and soft start resistor on the transformer shield.

 

[Hexis22]

Placed thermal switches on the back chassis wall.

Given the large tabs on this switch, it's easier to place after the mounting the backplane boards.

I also placed a VERY small amount of thermal paste on the thermal switches and bias transistor mount for improved thermal transfer from back chassis wall.

 

[Hexis22]

Mounted the auxiliary power supply transformer to the shield and terminated all primary and secondary leads of both main and aux toroids.