TonyD'Amore

The wagon wheels just showed up so it won't look like a rental anymore. 26 x 10 Giovanna Dramuno-6 wearing 305/30/26XL Pirelli Scorpions.

It will be mobile mostly, we will try to have it available for demos upon request as much as possible.

All PCB design is done in house by myself. The manufacturing of the raw pcb requires equipment that we do not have so they are bought. Once we receive the raw pcbs, we have the components soldered to them by robotics in either our LA area pcb house, or our Phx area pcb house. We mount all of the power devices to the heatsinks in house, then put the heatsinks though the circuit boards (will make sense when I release pics and info of the design) and solder the power devices to the pcbs in house. The heatsinks are machined from solid aluminum, not cast or extruded. More details on the amp later, and my reasoning for each element of the design will be detailed. I will start a new thread to show the last 2 years in development in one place where we can all discuss the design.

Wow thanks for that brother! You have a way with words my friend! Someday if I become like you say, please write my wikipedia bio!

Great question! In the case of our dual monoblock amplifier, it is literally two mono amps in one chassis so both have to have their own power cable as each of them has it's own power supply. Why is this a good thing? In the case of running subwoofers (as one of our dual monoblocks will be in this build) it doesn't make much if any difference at all, other than offering lower resistance as you mentioned. But in the case of running components (as the other dual monoblock amp will be in this build) it makes a big difference on Stereo Separation. Stereo separation is this (on a multichannel amplifier): If a sound input to the Left Channel, and no sound is input to the Right Channel, how much sound actually comes out of the right channel? In a perfect world the right channel would be completely silent. In the real world some of the sound intended for the Left Channel will come out of the right channel. This problem is especially bad at higher (tweeter) frequencies. As frequency increases electricity doesn't necessarily need wire to conduct, it will radiate wirelessly if not shielded very well. In a 2 channel amp, both amplifiers share a common circuit board and power supply so some of the left channel sounds can easily find their way into the right channel. In a very well made 2 channel amplifier, the channel separation may only be 40dB or so at high freqs. That means if the left channel is playing a tone or sound, the same tone or sound will be coming out of the right channel; but -40 dB from that of the left channel. This tends to "blur" the imaging, sounds won't appear to come from where they were intended to. On a TRUE dual mono design like ours this problem is really not a problem any more. I say TRUE because there are several "dual mono" designs on the market that are fake. Dual connectors to the same PCB. Left and right channels right next to each other on 1/2 of the same PCB... etc. Hope that answers the question. Keep them coming! Tony D

We are building a demo vehicle for this upcoming CES (Jan 6 -10th) in Las Vegas! It is a 2015 Yukon, install being done by Handcrafted Car Audio of Chandler, Arizona. The Yukon is being built to showcase the amplifiers that will be unveiled at the CES Show. We have a booth in The Orleans Hotel where will be showing DiamondBoxx and SMD tools and meters, but no demo car there. The Yukon will be manned by our staff and will be mobile to give demos during the show as much as possible. We will also bring it out to the bassheads meet so people can take a look and listen. The amplifiers are high-end Class A dual monoblocks... more about those later. I will update this thread with pics as I get them. 2015 Yukon (2) D'Amore Engineering Dual Monoblock 1500.2 Class A / A/B amplifiers (2) Sets of 3-way components, Hertz High Energy HSK163 Audison Bit-One sound processor (3) Hertz High Energy 15 inch subwoofers HX 380 Audison Distribution Block and fusing CE Auto Electric Big 3 Upgrade CE AUto Electric 1/0 AWG OFC Front to Rear CE Auto Electric 4 AWG to amplifiers, 2 runs positive and negative to each amp because they are TRUE dual mono, one power supply per channel! Custom Dash pods, front door panels, subwoofer box and more by Handcrafted Car Audio ACRES of Premium Acoustic sound deadening by SoundSkins; doors, roof, hatch, etc 26 X 10 Giovanna Dramuno-6 Forged wheels 305/30/26 Pirelli Scorpion tires Big thanks to SoundSkins, CE Auto Electric, Elettromedia, and of course Handcrafted Car Audio More mods to come On to the pics --- sorry about the formatting I'm kind of a newb in forum posting -Tony D

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That thing is clean man

How is clipping not distortion? Clipping is ONE form of distortion. There are many other things that can cause distortion as well.

On some amplifiers (internally bridged ones, or uncommon ground amplifiers) the black probe needs to be on speaker -, not Batt- . This could cause the distortion LED to be on always. But I have not personally seen a DD-1 used on a brazilian amp.

I don't know that they don't. The only reason the DD-1 wouldn't work on any amplifier would be if the amplifier was always putting out more than 1% distortion at any volume or gain setting.

I award you an A for effort sir. However the devil is in the details and the marketing info. That graph is erroneously drawn to make Class D look better than it is. The x axis is drawn lineraly in power. It should be drawn as a LOG. This would make the difference between the two look much less though, and would exploit the crap out of the fact that Class D has LESS efficency at very low levels. The graph in that .gif should have the x axis drawn as: 0.0001%, 0.001%, 0.01%, 0.1%, 1%, 10%, 100% ... NOT 0%, 10%, 20%, 30%, 40% and so on. Class Dismissed

Thank you sir! The choice of Class A/B was based on two things - Sound quality and idle current. These are both suprior on a class a/b amplifier. Advantages of class D amplifer are size and better effiencency under some conditions, not all. Size was not a concern as the size requirement for the woofer airspace was the determining factor there. Efficency was a wash. So Class A/B it is, and it sounds great! Just trying to give Dr. Helmholtz some love and respect Idle current shouldn't differ too much I think? What are your findings? The main thing is that class AB uses about 4 times more power with music at max volume. Waste of battery IMO. Class D is also much more suited for mass manufacturing (SMD, sinking via the PCB). I saw on your FB page that you were searching soldering techs down to 0603. There's no way your handassembling this (right?). Do you mind sharing some internals, maybe via PM, I always like to see the engineering work of others. Idle current is quite different on the two. Like double on the class D. In my opinon Class D is better suited for higher power applications, and where sound quality isn't as much of a priority as price. The amplifier PCB is designed for manufacturing and uses SMD parts and some through hole parts. The parts are machine placed. At continuous full volume I agree, a Class D amplifier would be more eff, which possibly could allow us to use a smaller capacity battery. But with the idle current being higher, at low volume the eff gain is nulled. We chose to let the battery cost a bit more and enjoy the sound this system produces. How do you figure class AB uses 4 times the power with music at max?

Thank you sir! The choice of Class A/B was based on two things - Sound quality and idle current. These are both suprior on a class a/b amplifier. Advantages of class D amplifer are size and better effiencency under some conditions, not all. Size was not a concern as the size requirement for the woofer airspace was the determining factor there. Efficency was a wash. So Class A/B it is, and it sounds great! Just trying to give Dr. Helmholtz some love and respect

huh? There is nothing to contest, it's not up for debate. It's science.

hahaha Thanks Steve! Yep hopefully he will be building DD-1s soon lol .. Thanks everyone, the little shooters name is Landon Thomas D'Amore "LT"

They will be in stock at WC Car Audio within days. We are building daily, we can always be reached via email at [email protected]

dope! Liking their fb now

Sorry guys, the person that was handling the info@ and warranty@ emails is no longer with us and we forgot to pass that task on to someone. My personal email here is [email protected] so that is why we didn't see that one. Info and warranty emails will be getting checked daily now. Is there still a question or issue I can assist with? Tony D

Demo video just uploaded to our D'Amore Engineering Video Manuals Playlist https://www.youtube.com/playlist?list=PLNMbsRIxVU1KMDzeKrXVV3gAqwVVX0kMn

DD-1+ Demo Video

We made some product video manuals and a playlist. Subscribe to our channel and check back often as we add more video manuals to it. One or two still uploading as I type this. https://www.youtube.com/playlist?list=PLNMbsRIxVU1KMDzeKrXVV3gAqwVVX0kMn