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Old 01-16-2009, 04:58 PM   #1
kingsuv

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Diablo Audio Technologies HF 1000.1 Sneak peak

This is the first proto-type, this is not a production unit, this was made so we could have it tested.


Please keep in mind this heatsink will change this was for testing purposes only.

We will also include the Black PCB, same silver treatments over the gold and the power terminals will be 1/0 not 4G





HF-1000.1 Testing Results
This amplifierís size is at 410.5mmX260mmX55mm(W,L,H).



Specifications

1000W rms Class-D amplifier.
1 ohm load stable.
Double Side PCB and SMD components.
Adjustable Input level, LPF, Subsonic, bass boost function, Q control.
Advanced short circuit, overload, over heat protection.
Advanced clip limit / thermal power limit function.
Easy bridgable with same amplifier.
Optional remote controller.

Testing Conditions


1. Power supply: 14.4V DC power supply
2. Test signal: 50Hz sine wave.
3. Loads: Resistor dummy load.
4. Environment: 77 degrees F, open air.
5. Relative humidity: 70%.
6. Instrument: Audio Precision SYS-2322A.

Power Testing


RMS power/ (1ohm) RMS power/ (2ohm) RMS power/(4ohm)RMS power
5% 1920W 1220W 550W
3% 1700W 1060W 480W
2% 1570W 920 W 395W
1% 1450W 850 W 380W


Efficiency
Load 4 OHM 2 OHM 1 OHM
Efficiency (THD+N @ 1 % ) 89.6% 83.7% 76.0%

4ohm Testing


2ohm Testing


1ohm Testing




LPF Response



Subsonic Filter Response



Bass Boost Reponse


Bass boost Q control (bass boost frequency set at 50 Hz)


Protect Function
Overload:

Protect when output current reach 75A. (Protect when load resistance less than 0.8ohm at full
scale power.)

Short Circuit:
Full rated power short circuit protect test: passed.
Full rated power long last short circuit test: 10 minutes passed.

Over temperature:
Limit output power while inner temperature reach 167 degrees F, protect while inner
temperature reach 185 degrees F.

Low voltage:
Protect while power supply voltage lower than 7.8V.

Power limit / Clip limit.
Clip limit while THD+N≥1%.
Power limit while inner temperature over 167 degrees F.

Bridge method
HF-1000.1 can be bridged with same amplifier through single RCA cable.
All the adjustable functions on slave amplifier will follow master once be bridged.
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Old 01-16-2009, 06:29 PM   #2
The_spacemonkey

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Looks great! Thanks once again for all of the testing and for your openness about your products specifications.
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Old 01-16-2009, 07:43 PM   #3
kingsuv

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No problem! I have always wanted to see what an amp could do before I purchased it. I like my customers to have as much info so they can make an educated decision before they buy.

We have started a pre-sale on this one too at 299 shipped in the US. Please contact me if interested.
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Old 01-16-2009, 08:11 PM   #4
Stangman67

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That seems like a great price for that amp. Now I need to find a reason to buy another amp!
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Old 01-16-2009, 08:41 PM   #5
JasonPaul

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Quote:
Originally Posted by kingsuv View Post

Testing Conditions


1. Power supply: 14.4V DC power supply
2. Test signal: 50Hz sine wave.
3. Loads: Resistor dummy load.
4. Environment: 77 degrees F, open air.
5. Relative humidity: 70%.
6. Instrument: Audio Precision SYS-2322A.

Power Testing


RMS power/ (1ohm) RMS power/ (2ohm) RMS power/(4ohm)RMS power
5% 1920W 1220W 550W
3% 1700W 1060W 480W
2% 1570W 920 W 395W
1% 1450W 850 W 380W


Efficiency
Load 4 OHM 2 OHM 1 OHM
Efficiency (THD+N @ 1 % ) 89.6% 83.7% 76.0%

4ohm Testing


2ohm Testing


1ohm Testing


Little curious about how you rated this model..
Your listed power rating vs your test graphs seem to be off a bit..

looks more like ~ 1800rms @ 1ohm @ 1% thd..
~ 1200rms @ 2ohm @ 1% thd..
~ 700rms @ 4 ohm @ 1% thd...
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Old 01-16-2009, 09:37 PM   #6
Stangman67

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Yea I saw that discrepancy too. Amp more powerful than you thought it would end up being?
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Old 01-17-2009, 03:56 AM   #7
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Looks like a nice amp. If anyone picks one up, please do post a review after installation. kthxbai
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Old 01-17-2009, 04:52 AM   #8
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Quote:
Originally Posted by JasonPaul View Post
Little curious about how you rated this model..
Your listed power rating vs your test graphs seem to be off a bit..

looks more like ~ 1800rms @ 1ohm @ 1% thd..
~ 1200rms @ 2ohm @ 1% thd..
~ 700rms @ 4 ohm @ 1% thd...
Quote:
Originally Posted by Zachfeen View Post
Yea I saw that discrepancy too. Amp more powerful than you thought it would end up being?

I just wanted to see if you guys really read specs

Our numbers did change after we had made some design changes to the amps. We forgot to change the numbers accordingly. Thanks for having a good eye and catching it.

We wanted to make sure we were offering a powerful amp for the buck. I hope we have met those expectations
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Old 01-17-2009, 03:25 PM   #9
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Quote:
Originally Posted by kingsuv View Post
I just wanted to see if you guys really read specs

Our numbers did change after we had made some design changes to the amps. We forgot to change the numbers accordingly. Thanks for having a good eye and catching it.

We wanted to make sure we were offering a powerful amp for the buck. I hope we have met those expectations
So you are rating a 1800w rms amp at 1000w rms?
That will sure blow a lot of your customers speakers..
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Old 01-17-2009, 03:29 PM   #10
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Quote:
Originally Posted by JasonPaul View Post
So you are rating a 1800w rms amp at 1000w rms?
That will sure blow a lot of your customers speakers..
that is better than rating an 8 awg amp kit to handle 1000 watts.

http://www.cadencestore.com/ProductC...&idproduct=416
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Old 01-17-2009, 03:48 PM   #11
JasonPaul

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Quote:
Originally Posted by Duct Tape View Post
that is better than rating an 8 awg amp kit to handle 1000 watts.

http://www.cadencestore.com/ProductC...&idproduct=416
I have no control how they rate things but if it was my company I would rate it as it should be.. Also I no longer work for them..
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Old 01-17-2009, 06:21 PM   #12
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Quote:
Originally Posted by JasonPaul View Post
.. Also I no longer work for them..
Really? Why not?
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Old 01-17-2009, 07:21 PM   #13
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Quote:
Originally Posted by JasonPaul View Post
So you are rating a 1800w rms amp at 1000w rms?
That will sure blow a lot of your customers speakers..
Yes the amp is stronger then what we had first designed for. The power numbers are based on an ideal electrical system. This amp however was made for the less then prefect system, and at a budget price.

I would expect real world numbers to be in the 1200-1400 range.
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Old 01-18-2009, 12:06 AM   #14
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Quote:
Originally Posted by SPL BRONCO II View Post
Really? Why not?
I was laid off as of Nov. 1st.. Not my choice but I started my own company and I hope things will work out for the better.
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Old 01-18-2009, 12:12 AM   #15
JasonPaul

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Quote:
Originally Posted by kingsuv View Post
Yes the amp is stronger then what we had first designed for. The power numbers are based on an ideal electrical system. This amp however was made for the less then prefect system, and at a budget price.

I would expect real world numbers to be in the 1200-1400 range.
Well if you want to get some good first impressions take a page from my book and do I what did while working for Cadence. Video your amplifier testing.. Also rate the amp @ 1% thd @ around 13.5-13.8v which is the real world usable voltage in a car...

iA7 testing
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