Here is a fun fact about the SMD Test Equipment since you are comparing it to Rockford Fosgate Amps. The SMD stuff is designed by D'Amore Engineering A.K.A Tony D'Amore who used to be a Lead Engineer for Rockford Fosgate for 8 years in the Early 2000's. So the SMD stuff was made by some of the greatest minds from Rockford Fosgate 😁👍🏻
@fatyMuthaFucknBiscts
2 жыл бұрын
He also worked for BOSS audio…
@meade916
7 жыл бұрын
great video! thanks a lot for posting it!
@caraudioetc
7 жыл бұрын
+meade916 no worries Steve! It's been something I've wondered about for a while and havnt had the gear on hand to actually do it. Also Hi!!! Big Fan
@UrAvgBasshead
6 жыл бұрын
Car Audio.etc great video. Do you know if my door speakers are rated at 60 rms and my amp can push 75rms, would I be able to use SMD-DD1 to get the clean sound? Thanks again!
@stevegarvey5983
6 жыл бұрын
DD-1 is picking up 1% distortion, that happens before clipping, which is why the Rockford takes longer to detect
@JWarrenPhilly
3 ай бұрын
Not to mention, the dd is using a circuit that pins the wave to 40hz here. Just thinking that may help to see the wave and its variations away from normal. The amp just detects flattening of the wave aka DC like signal.
@wow1022
7 жыл бұрын
Also, the way this distortion detector works is with a sharp notch filter that is set to cut out 40Hz and 1kHz frequencies and let every other frequency pass, and when harmonics (distortion) appear (in the case of 40Hz you get 80Hz, 120Hz, 160Hz . . . to the Nth harmonic) they pass straight through the notch filter and you can amplify them for detection and light up an LED.
@michaelsheppard6714
5 ай бұрын
Some of your best car audio engineers came from Rockford Fosgate.
@savionsmith7418
5 жыл бұрын
What’s actually happening is the Rockford Fosgate light means 3 stages of distortion... Blue- .5% thd Blue/red- 1% Red- 10% or higher The smd dd1 is set at .5% thd I believe....so they are both working but since the smd is set to a lower thd detection it’s tricking you....both are solid. Just keep the light on the amp blue and you’ll be alright
@arronbennie7556
7 жыл бұрын
I'm really liking how you explain everything and how you do most thing. I'm a big fan and I'm happy as hell to find someone on KZitem that does car audio show like soundman and Steve mead closer to Sydney where I am and have similar products available . Keep up the hard work bro, ill be watching for years to come.
@wow1022
7 жыл бұрын
the buzzing you are hearing when the amp clips is the amplifier's output filter (takes the hundreds of kHz PWM square wave and filters it back into a sine wave). There is a big inductor on this filter that starts vibrating from the pulses of DC voltage that appear across it during clipping.
@LTSRIDE24
3 жыл бұрын
Does the CLEAN light need to be solid red or just flicker? Might flickers at times when the bass beat drops real low but goes right back off. Is that a concern or is it when the light stays on?
@wow1022
7 жыл бұрын
As I always say, this does not mean the amp won't clip when you play every song at the same volume level on your head unit, every song has a different level of bass, in fact you could cut yourself short on sound when the song's bass level is lower than the level of the test track you set it with. In addition, more often then not songs have a heavy kick included with the 808 kick, and that kick is a higher level than the 808 so each time that kick happens it can clip your amp even though the consistent 808 bass doesn't So what I care about is an active clipping indicator like all pro audio uses and keep the head unit's level much below head unit preamp clipping
@BradynJDM
7 жыл бұрын
I believe the Rockford Fosgate CLEAN measures clipping while the SMD DD1 measures distortion at 1% THD. Hence the slight difference. I personally would like to keep everything below 1% THD rather than up to clipping.
@caraudioetc
7 жыл бұрын
+Bradyn Giraudier can you explain the difference between clipping and distortion to me because a lot of people say there is a difference but don't explain it.
@BradynJDM
7 жыл бұрын
Clipping is a form of distortion that happens when an amp attempts to deliver more voltage or current beyond its maximum capacity. Harmonic distortion itself could be defined as non-linearity in a sine wave due to harmonic waves. So at very low levels the sine wave may not be clipping but can be dis-formed or have weird edges instead of a smooth wave. Here is a great example with a line out converter. The SMD DD1 light was on but the Rockford clipping light was off way before the clipping point but there was distortion. kzitem.info/news/bejne/pqSi2J1jj2uaoWk
@BradynJDM
7 жыл бұрын
Here's another great video showing the difference: kzitem.info/news/bejne/12aAyaekbF-GmWk
@balisongsnbeats.9219
5 жыл бұрын
Clipping - hard clip. Definite damage possible 1%thd - soft clip, acceptable and very very unlikely to damage speakers unless amp is grossly over rated for speaker RMS
@optimusprimer4392
2 жыл бұрын
@@balisongsnbeats.9219 if it's a good speaker it can take quite a bit of clipping they build them pretty robust but if you play it for long period of time and it's clipping and heating the coil up up and heating your amp up that's when you get the bad results if you got a cheap speaker look out
@mytruckinlifeace4047
7 жыл бұрын
Looks like the smd dd1 is going to get the best results. Who knows you might not even notice the distortion when it's less than 1%.
@critical_unknown
7 жыл бұрын
Can't go wrong with a pioneer head unit.
@cmoises4
6 жыл бұрын
The manufacture set the amp to tune at 1% THD so you can get that extra wattage that appears on the birth sheet thats why most amps are rated at 1% THD
@pimphandgamester
7 жыл бұрын
What if you listen to .mp3, should you use an .mp3 version of the 40hz and 1khz test tones or would it matter?
@ryleythompson2314
4 жыл бұрын
Pimphand Gamester yes .mp3 will be compressed and won’t work nearly as well as using the CD. The CD sends a cleaner signal due to it not being compressed to a couple mb download
@skeezixmccat
7 жыл бұрын
Now I could be wrong, but I wouldn't say either one is more sensitive than the other. The DD-1 detects distortion, doesn't it? Which doesn't necessarily mean clipping. The levels it's set to detect is probably very close to where most amps clip but my point is I don't think they're both trying to sense the same thing.
@fw1367
Жыл бұрын
Hey. Good video. My RF amp t400x4ad plays 471w 4ohm (117,7 x 4). My speaker can handlar 100w rms. Is the amp to powerfull. ? Or can i set the gain alittle Lower so the speaker not get damaged? Thanks. 🇸🇪
@Terminator_888
3 жыл бұрын
I just want to replace the factory Bose sub on my 09 Tahoe. What would you recommend in sub and amp. The enclosure is hidden in the center console between the pilot and copilot seats
@moparornaaaa3691
3 жыл бұрын
Why in mine the blue light is blue and red???? Not just blue And the subwoofers just make a funny noise???
@lieutenantmikeo5979
3 жыл бұрын
Same...blink blue then red for the clip indicator
@DracolegacyOfficial
7 жыл бұрын
pioneer and sony dont get the love they deserve anymore. good video, not surprised by the results though, with the work that went into the SMD/D'Amore engineering audio tools i would expect nothing short of perfection
@lugo2510
2 жыл бұрын
Very helpful video. Was trying to figure out this feature. Thank you
@CarAudioInc
7 жыл бұрын
I'm so happy you did this!
@arose60
7 жыл бұрын
I've heard the amp noise you're mentioning, it's not exclusive to just rockford amps, my old pioneer gm-d9601did the same thing
@kabarrion
3 жыл бұрын
Mine does it as well. GM-d9605
@hectorortega9131
6 жыл бұрын
Im Lost, What DB for what speaker size, does it say on the manual, or website?
@giosant5327
Жыл бұрын
Imo every amp should integrate clip detect on inputs and outputs would be awesome
@dannymorales5376
5 жыл бұрын
Blue l.e.d for rockford is 0.05 THD blue violet l.e.d is 1%THD. And red l.e.d is 10%THD. It tells it on the rockford website for under the specs for the punch and power amps thatd why tell u to set it at blue l.e.d when doing testing cause when ur playing music its dynamic and should be perfect at 1%thd cuz the amp will mostly show violet l.e.d
@27selmon
4 жыл бұрын
Yeah i got this amp now, it's super nice. So blue/red light on music is ok right?
@spookiii1839
3 жыл бұрын
Is it?
@valecasillas5729
2 жыл бұрын
Is yours stereo 5 volts ? The rca please let me know
@lylegoodluck
2 жыл бұрын
How's that amp doing? Is it still running good??
@anthonysmith8900
6 жыл бұрын
What crossover should I use?
@shaunjay6040
7 жыл бұрын
I love this amp, but after a year I'm looking for more power. I'd love it if you made a video on how to wire a pair of these on separate subs (since they can't be strapped), and also how to set it up so everything matches properly.
@anthonysmith8900
6 жыл бұрын
Shaun Jay this amp is not that powerful imo. I have the front at 60hz and back at 55hz, and it's hard not to get flashing red clip lights on songs with dynamic bass.
@slybunda
4 жыл бұрын
distortion detector vs clipping detector.
@sirloin13
6 жыл бұрын
Steve Meade endorsed rockford fosgate products
@sirloin13
6 жыл бұрын
D'Amore is a rockford fosgate engineer he teamed up with Steve Meade and design that distortion detector
@AlwaysBriaN4
7 жыл бұрын
Hey James. It's me Brian Malcon. lol. Anyway, I installed a new amp recently, and I noticed when I switch the cars Ignition to off, theres a static noise coming from one of my speakers after around 3 secs. Any idea what I should do? Will it damage any part of my system? Cause if not, I'm planning to just let it be. Haha
@caraudioetc
7 жыл бұрын
+Ambers Circle I had a car do that just yesterday. The cause turned out to be a speakers thabien wires touching the chassis. So check your speaker installation. An easy way to diagnose is testbeachnof the speaker wires where they connect to the amp for continuity to ground.
@pontiachotshot
5 жыл бұрын
My input clip light beats with the songs lol. I can’t get that dam red light to stop coming on. The music sounds awesome. But the red input clip light has me confused. I have cheap rca wires. My pioneer is turned up to 10 on the sub output.
@clickslidebang1871
3 жыл бұрын
Lol
@Trapperjohn1000
7 жыл бұрын
It's crazy how young you look but installs so awesome.
@Droopz707
4 жыл бұрын
Your battery is also low
@LsxDenali
4 жыл бұрын
This vid needs moee views!
@tonyberryman7401
7 жыл бұрын
When is Project Legacy: Custom PlayDough Tweeter Pods | Part 2 coming?????????????????????????????????????????????????????????????????????????????????????7
@ljmike1204
7 жыл бұрын
lol that looks like the amp i have is that the p400x2 ?
@caraudioetc
7 жыл бұрын
p1000x1bd
@cfmechanic
4 жыл бұрын
How do u like your 400x2. I got one as well but not all that impressed. It plays clear but not that loud. So it seems.
@69MazdaR100
6 жыл бұрын
Plug the DD1 into the headunit rca output when measuring the headunit clipping, not into the amps output
@robertoortiz85
17 күн бұрын
It was designed by the same person… damore
@shannonthomas6556
3 жыл бұрын
Vhhh he has come between classes vcccc
@mgcauctions07
3 жыл бұрын
Clean system is more accurate
@SEC4POTUS
5 жыл бұрын
Get a tripod.
@andyschloesser2098
7 жыл бұрын
I would trust SMD to be more accurate than RF
@elvismtakwa610
6 жыл бұрын
andy schloesser sounds like a biased opinion
@twashington1991
6 жыл бұрын
This video is completely inaccurate due to the fact that your SMD DD1 unit is showing a low battery light and if you read the instructions it says to always use a brand new battery when testing any audio signals and a low battery will give unreliable results. Long story short this video is an illegitimate comparison and proves absolutely nothing
@dsw0422
7 жыл бұрын
to properly test input clipping on the rca's from the HU, plug the rca into the dd-1. doing it the way u did is still only testing clipping thru the amp. great video otherwise
@MrSpanky473
7 жыл бұрын
Dustin Winn You will get the same results either way.
@caraudioetc
7 жыл бұрын
And the purpose wasn't to test the head unit, it was to compare the dd-1 to the RF side by side in real time.
@dsw0422
7 жыл бұрын
Car Audio.etc you can properly test input distortion side by side. use 1 rca in the amp and 1 in the dd-1
@andyschloesser2098
7 жыл бұрын
SMD recommends signal testing through the amp if possible actually, in the end that's where your signal is going to end up.
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