Monster Amp

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thompsontechs

thompsontechs

Member
Joined 2019
#1
Okay ladies and gents, it's time to build a beast and I'd like your input!

Goals:

  • Class AB
  • Gain 22-28dB
  • Inputs XLR/RCA
  • Power Out per chan 4-8 Ohm 300-600W range
  • Power consumption NA
  • Type Mono
  • AC 110 USA

Input friendly to a wide variaty or pres including valves.

I would need to split the output devices, so I can use both heatsinks on each mono, (left and right side of case)

This will drive many speakers, but ill be hooked up to a pair of Tekton MOABs 4 Ohm 900W when I want to raise the roof. These are very efficient and need not be driven, by this beast, I know this.

As far as THD goes I'm not married numbers, but I don't disregard either. I don't like bright or forward amps as my ears are sensitive to higher freqs. The F5 is a great amp, but forward, to my ears.

There will be soft start boards and SS speaker protection on this one.

The footprint of each case will be 430*200*411mm

Music Classic Rock, Blues, Jazz, pretty mh everything, but this one is going to be mostly for ROCK!


Some thoughts: I have been reading threads for possible DIY amps here, but at times, there are several hundred pages and many changes along the way making it daunting to figure out which direction to go.

If possible, I would like a solid BOM (with as few nonstocked or obselete part as possible) and boards or Gerbers for them.

This amp will get built, I'm not one to ask for something and not follow though. The intent is to make this one the very best I can. I have found some very nice cases and I want this to be the best work yet.

Thanks, in advance, for your input.

JT
 
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#2
JT,

Hopefully your AC is 120-123V like mine is down here in NC. Don't know if Illinois has a different power grid structure.

You can ask X, where this build is going:
Aurum-X 300w Class AB Amp GB

I'm sure others will chime in. I am happy with the output of the Neurochrome Modulus 686, but it only does 360W/4ohms @ <0.1% THD at that power level which may not be enough power for you.

Best of luck in your search!

Anand.
 
#3
Hey Anand, follow you on several threads....

We get about 118-120V here depending on time of day and usage. For instance, this morning it was 120V and now when people are getting home and cranking air etc, it's about 118V.

360W into 4ohms would be doable for sure. I will take a look at what you posted.

JT
 
#6
We have a double power Modular NS amplifier board set available that can easily output 500+ watts. There is a full protection system with it complete with solid state relays. There are multiple input stages available to work with it as well so you can fine tune the sound to your liking. Our website isn't up to date, it shows an older version. NS OPS Double Power board (1 x PCB) – Virtual Zero Audio Store
 
#7
Jeff, you and Valery will be happy to hear you are on my list and toward the top right now. I very much like what I have read so far and am intrigued. Perhaps, you can provide me with the latest info and test info you have that I may not have seen. We are in the ballpark for the output I was looking for and I love the ability to twek the input too! This has proved very relevant for past builds.

I will do some moere research and try to figure out all that is needed, but I like so far.

JT
 
#15
thompsontechs said:
Okay ladies and gents, it's time to build a beast and I'd like your input!

Goals:

  • Class AB
  • Gain 22-28dB
  • Inputs XLR/RCA
  • Power Out per chan 4-8 Ohm 300-600W range
  • Power consumption NA
  • Type Mono
  • AC 110 USA

Input friendly to a wide variaty or pres including valves.

I would need to split the output devices, so I can use both heatsinks on each mono, (left and right side of case)

This will drive many speakers, but ill be hooked up to a pair of Tekton MOABs 4 Ohm 900W when I want to raise the roof. These are very efficient and need not be driven, by this beast, I know this.

As far as THD goes I'm not married numbers, but I don't disregard either. I don't like bright or forward amps app as my ears are sensitive to higher freqs. The F5 is a great amp, but forward, to my ears.

There will be soft start boards and SS speaker protection on this one.

The footprint of each case will be 430*200*411mm

Music Classic Rock, Blues, Jazz, pretty mh everything, but this one is going to be mostly for ROCK!


Some thoughts: I have been reading threads for possible DIY amps here, but at times, there are several hundred pages and many changes along the way making it daunting to figure out which direction to go.

If possible, I would like a solid BOM (with as few nonstocked or obselete part as possible) and boards or Gerbers for them.

This amp will get built, I'm not one to ask for something and not follow though. The intent is to make this one the very best I can. I have found some very nice cases and I want this to be the best work yet.

Thanks, in advance, for your input.

JT
Click to expand...
Hello, You're looking to build a Class AB mono amplifier with 22-28dB gain, XLR/RCA inputs, 300-600W power output into 4-8 Ohms, and a footprint of 430200411mm. You prefer an amp without a bright or forward sound signature, and you plan to incorporate soft start boards and solid-state speaker protection. You'd like a BOM with readily available parts and minimal obsolescence issues, as well as boards or Gerbers for the project.
 
#16
With the knowledge of the sonic, and lamentable;-) influence of parts, modulation of noise, I would want to do without every single watt. I would rather invest in high efficiency loudspeakers - there is already a tremendous lack of knowledge when it comes to speakers. I would, for high load applications, look for a simple but fat follower driven by a se amplifier, tube or solid state. Something like this;-)
 
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