Why head unit manufacturers are lying to you about high voltage output @ The Robot Underground

Рет қаралды 9,837

3 жыл бұрын

PPI power plugs for Art series, PCX and PC / PowerClass: ebay.us/UfoH46?cmpnId=5338273189
read and understand the specs that head unit manufacturers are using.
Just like an amp manufacturer says that it does say 100 watts into a certain load.... head units will put out a certain voltage into a certain impedance. Typically that's a hundred ohms. Most amplifiers have an input impedance of around 10,000 - 25,000 ohms. Go figure your voltage / watts at that point!
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Пікірлер: 125

@cs8880 3 жыл бұрын

Zero fucks given when it comes to telling it like it is. The world could use a few more advocates of truth like yourself sir. Thanks for everything you do for the bass head community!

@skyblockjake 2 жыл бұрын

FINALLY! I understand why my gain only goes up like 1/6th of the way up before it clips. Thank you. Learning so much

@RobotUnderground 2 жыл бұрын

Happy to help!

@lewokejames Жыл бұрын

Exactly! Mine clips at about 1/5th turn .... 4 volt output hu.

@ritoncho 3 жыл бұрын

You are my teacher, tks for sharing your knowledge!!

@jeremynelson8496 2 жыл бұрын

Your shop is as functional as your knowledge is, no bullsh#t. Love your style dude.

@RobotUnderground 2 жыл бұрын

Glad you enjoy it!

@dowboykfx470 3 жыл бұрын

Maaannn I be loving this contact keep it up. it's nice to see somebody out there spreading true facts and information.

@fuckgoogleandyou8779 3 жыл бұрын

The truth will set you free....

@cdbrudis 2 жыл бұрын

Very simple explanation of things that seemed complicated ,thanks brother

@RobotUnderground 2 жыл бұрын

My pleasure

@mikehoncho5360 Жыл бұрын

I just found your channel and man I’m so glad I did!

@RobotUnderground Жыл бұрын

Glad to hear it!

@fabeybaby8213 3 жыл бұрын

bro what was the motor at the end of when you showed all the colors at 13:42??? Man some of the awesomeness you have lying around just trips me the hell out!! Another question is the sound cubed hdc3 motor I have had a 2" high 3"bifilar coil and I was just wondering if you had any ideas on improving it like you did earlier in this video because I love this motor but I want to improve the coil and have tried and ended up with a dual 1.1 ohm 2.25"high 3" coil and when I wire it in parallel it ends up being .7ohm.. like do you think I should wind it higher to get to one ohm or go with bigger gauge I went with 26 gauge for this one. Thanks man

@RobotUnderground 3 жыл бұрын

The gauge of wire isn't as important as how many winds are in the gap. Just use what coils are available and fit.

@louisflorence2118 3 жыл бұрын

You the truth men!!! Appreciate the honesty 🙏

@rawbasicrawbasic 2 жыл бұрын

This is the true school/college of car audio 👍

@forsale313 2 жыл бұрын

Thank you for the Hi/Low trick. It will be used. Man, I got the Loudspeaker Cook Book from Parts Express back in 1993.

@anglerandy5736 2 жыл бұрын

Bro i have the exact bass knob issue and rockville wont tell me what connector it is on the m3 krypton amp it looks like rj45 but when i use a cat5e cable my clipping light is barely visible so i have to run the 12 ft cable that came with it to under my seat and just coil it up and use a velcro wire management thing with a giant roll of cable under my seat.

@RobotUnderground 2 жыл бұрын

It's probably just a flip / X cable that flips the pin assignments. Try that instead. You can get them on closeout on Parts Express.

@giosant5327 Жыл бұрын

Great content man i don't know how to thank you for taking your time for spreading good quality info❤👍🏻

@RobotUnderground Жыл бұрын

I'm so glad we could help you. If you feel I've answered all of your questions, I would really appreciate 5 stars on the Google page. g.page/r/CTgbFJJyazV8EB0/review

@timothy5977 2 жыл бұрын

The shop I worked at (2001) had one of those Rockfords it was cool just to test amps with.

@allhairtypes45 3 жыл бұрын

Good info

@scottmiller3025 2 жыл бұрын

My 4v output alpine only puts out about 1.5 to 2v thru the volume spectrum.

@anglerandy5736 2 жыл бұрын

so i have an android head unit with 1.5v output that i got an Audiopipe line driver for to amplify the preout up to10v.. didnt really need the line driver? I keep it at 7v because my amp says 8v max input.

@RobotUnderground 2 жыл бұрын

Correct. Just because they make it, doesn't mean you gotta buy it.

@davntelisha19 Жыл бұрын

Good stuff man

@blakebyrd378 Жыл бұрын

Great video bro

@srt8beast249 2 жыл бұрын

What are your thoughts on current Cerwin Vega amps and subs? I saw the CV amp in the video so had to ask. Cheers!

@RobotUnderground 2 жыл бұрын

Expensive / overpriced. The new owners really over-rate the amps as well.

@srt8beast249 2 жыл бұрын

Thats a bummer. I've had CV subs in the past and have never been disappointed. Nothing crazy just a pair of 12" V Flex with a Premier PRSX720 amp (which I still have and works). Thanks for the reply!

@joeJoe-pb3su Жыл бұрын

Great knowledge 👌

@samueltrask9143 2 жыл бұрын

Can you fix an Panasonic head unit l broke the cd player part by trying to insert a cd when it already had one in it . It stop playing of course but it still eject CDs

@RobotUnderground 2 жыл бұрын

It's not worth repair

@ericteasley5603 3 жыл бұрын

You are the absolute truth

@samueltrask9143 2 жыл бұрын

It's a nice touch screen unit with all the graphics on it high output 65 by 4. Like I said it works it's just the CD player is not functioning it will not play at all but the interface will tell you error. I don't want this nice unit to go to waste. I believe it's worth fixing. I probably going to need a nice wiring harness for it to unless you extend the wires on it

@RobotUnderground 2 жыл бұрын

Just use the auxiliary or Bluetooth input I don't think anybody really uses CDs or DVDs anymore anyway

@jkstdstang 2 жыл бұрын

🤯 wow good stuff!

@scottmiller3025 2 жыл бұрын

I need a bass knob for an original Phoenix gold bass cube, if u know of one,thanks

@RobotUnderground 2 жыл бұрын

I just have universals. Otherwise you have to try dozens of knobs hoping they work.

@antoniobadalucco6404 Жыл бұрын

Thanks brother good information

@RobotUnderground Жыл бұрын

Any time

@michaelzernie7092 3 жыл бұрын

So having a line driver is practically useless unless you have a shit deck? I'm using a Pioneer AVH-601EX. And the gain on the amp was barely turned up. Tuned using a DD1. So would having a line driver with a high end deck be useless?

@RobotUnderground 3 жыл бұрын

Line drivers are there because people think they need them and shops like to sell things. Epicenters are still being made, in spite of there being NO CASSETTE players being made or used.

@outlawGFXaus 2 жыл бұрын

RGA vs RCA bassknob does the same thing within the amp?

@RobotUnderground 2 жыл бұрын

They both just use a pot. Yes, same as the pot at the amp labeled GAIN.

@Len_M. 2 жыл бұрын

You wouldn’t happen to have any NOS Adire MKII Brahma 10’s, would you? Or could you make something like the MKII 10 (ie: a high excursion, awesome SQ, with alright power handling)? I want to do a small SQL setup with Morel’s Elate Carbon Pro active 3 ways, and a Adire Brahma MKII 10 would be sweet. Definitely one of the best sounding subs I’ve owned was a Brahma MKII 15. A lms ultra 5400 10 or 5200 10 would probably also fit the bill, eh (I don’t think they came in 10’s though, the 5400 anyway 🤔😣😂)? I have a 5200 18, but besides being the wrong size, it’s going in a HT Sub build.

@RobotUnderground 2 жыл бұрын

I can make you something like them. Text me when you're ready, 6023126504 I make better stuff for much less.

@CharlesK441 3 жыл бұрын

Subbed !

@scottjames3698 5 ай бұрын

Hey Patrick, I know this video is old as shit, but I see you had a Cerwin Vega CVPRO5k on your bench. I happen to acquire one recently in a trade, new and unopened. Do you remember if it was a decent amp? I haven't ran an CV gear since the 90s. My original plan was to sell it, but maybe it's worth keeping?

@RobotUnderground 5 ай бұрын

Yeah it's the same amplifier as the GONZO 5K and Sundown SFB 5K and black brick and Wolfram and everybody else that uses that same company

@dwaynevukoder1687 2 жыл бұрын

Man I would love to.talk to you brother! I have went threw 3 alternators this year in my 2000 dodge dakota running a single skar zvx 15 run by a 3000 watt kicker amp extra battery double 00 guage wire and fuse! Help me please!

@RobotUnderground 2 жыл бұрын

You can of course just text me direct. 6023126504 Make sure you tell me your name and shipping address so I can put you in my phone and answer your questions accordingly.

@moejaassen Жыл бұрын

I paid 76 bucks for a planet audio bbd 2500.1 puts out about 1200w to my type Rs. Ppl scoff at the BBD because of the brand and say I'm leaving performance on the table with my scosche line out (800mV is plenty for the amp rated 100mV-4V). They look at the 3 x 40A fuses and tell me I'm getting 200-300 not getting 1200w lol, (36v at output and fusing for it). They all buy into the lies they are fed instead of learning a little electrical basics. Why would someone ever pay 1k for a 1k amp? boggles my mind!

@RobotUnderground Жыл бұрын

And who owns Planet Audio??? Only the most hated brand in the world. lol!

@Tom_Foolery007 Жыл бұрын

Where on that gain knob ( 6v-0.2v) is the 2.5v position?

@RobotUnderground Жыл бұрын

Use your ear instead. kzfaq.info/get/bejne/jc6id9Scyp6me6M.html

@dimplezztorres6966 Жыл бұрын

Dude I’m moving out to AZ this week from Cali and honestly I been soaking up so much info from u I would like to go to underground n meet u bro

@RobotUnderground Жыл бұрын

Any time, Text me direct with your name and shipping address, 6023126504

@dimplezztorres6966 Жыл бұрын

@@RobotUnderground just got back to you in a text I appreciate you reaching back out I look forward to picking up some of those subs u produce ..

@RobotUnderground Жыл бұрын

@@dimplezztorres6966 I'm glad I can help.

@jamesosburn734 3 жыл бұрын

You provide a great service Patrick, Robot for President. Remember that #HandysNotHate will prevent school and church shootings.

@RobotUnderground 3 жыл бұрын

It's the only reasonable way.

@allmotorhash 3 жыл бұрын

Your opion on OFC vs Aluminum cladded wire to power 5k amp?

@RobotUnderground 3 жыл бұрын

It's not about an opinion. It's about science. It depends on how long the wire is. It also depends on if the amp is really going to draw 500A. Also, do you have a 500A alternator? If not, your 0ga CCA wire is fine to charge the battery bank in the back. Then from the back battery bank, to the amp, what length is that?? That will determine if the CCA you have will have enough ampactiy.

@allmotorhash 3 жыл бұрын

@@RobotUnderground Facts thank you gonana do rear battery bank to amps should be a short run

@RobotUnderground 3 жыл бұрын

@@allmotorhash Good. There are many wire charts to show you the recommended gauge / ampere rating for the distance you're running. Make sure that the front battery get's a 200-250A fuse, back battery bank get's the same. Then one per battery. That's to make sure that every link is fused so that there's less chance of a wire going hot and burning up. DO NOT USE CIRCUIT breakers. They are convenient but unreliable. ANL fuses are the standard.

@RobotUnderground 3 жыл бұрын

@@allmotorhash Alternator should also be fused as per the rating of the alternator. 150A alt should get 150A fuse. The fuses are there to protect against a short, not give you problems with your system. If there's a short in the alternator, wire touching ground, a battery internally shorting, the fuse is there to help prevent it spreading. Always keep a fire extinguisher and NEVER be the guy changing a tire on the side of the road. Pay that $1 a month for free towing on your insurance. That also frees up the spare tire well for more batteries! ;-)

@PhilipGerner-nr3ed Жыл бұрын

Man, i love your honesty, its refreshing That said... why do you like an amp for doing a 10th of its rated power? You saying you like something for lying to you. I have a first gen maxxsonic hifonics brutus 3300.1 and a JBL a3000 amp, both rated the same power although the Brutus is a class D mono sub amp and the JBL is a class A/B Its no comparison, the a3000 is literally 4 times the weight of the brutus, and waaaay more power id rather have an amp make rated power or more, like old 90s fosgate stuff... then go for this stuff that touts its literally 10x its rated output That being said, holy hell the new amps size to power on these new full range class D amps is incredible

@RobotUnderground Жыл бұрын

I just go by the fuse rating until I have my dyno setup.

@jesusbakle2972 3 жыл бұрын

Mad respect for the truth thank you so much! you fucken rock!

@tonysolis825 2 жыл бұрын

That's y I use the matrix on my mid bass and my subs it's so much cleaner than any deck out there and the deck on my tweets and mids .

@isiahgreen8405 Жыл бұрын

I use a Audiocontrol Matrix Plus Line Driver. To me the amplifier sounds better when the gain is low.

@commonsenseisdeadin2024 3 жыл бұрын

Just have come across your channel, I have only been in the bass scene a little over a year and have already come to many relizations of exactly how much bs people try to shove down your throats while these money guys just spoon feed those guys the shit! but then again i suffer from that one disease .damn ummm.. what is it again? oh having common sense, original thought and doing research a.k.a. weeding out the shit too! love it keep it up and now back to continuing more of your videos

@RobotUnderground 3 жыл бұрын

This is the best forum to say that the emperor is not wearing any chonies. kzfaq.info/get/bejne/fdibYMKm0dnIc4U.html

@geraldeverette4245 Жыл бұрын

Very smart guy you are my teacher also awesome guy

@robfalkner4303 Жыл бұрын

Man, where are you from bro ?

@RobotUnderground Жыл бұрын

Gilbert, Arizona

@elcaminosupersport Жыл бұрын

That reminds me of s dual amp I had good sounding amp

@mloml41 3 жыл бұрын

Is the book called loudspeaker "design" cookbook?

@fabelgamer7410 3 жыл бұрын

I believe so. By vance Dickenson i think.

@mloml41 3 жыл бұрын

@@fabelgamer7410 thanks 👍

@filibertofonseca8083 2 жыл бұрын

So you are saying inline level knobs are the same as a bass knob that plugs into the amplifier?

@RobotUnderground 2 жыл бұрын

Pretty much!

@filibertofonseca8083 2 жыл бұрын

@@RobotUnderground come on man, we both know they are not the same. U say you want to help out the basshead community but when you say things like that, it makes no sense. Not all knobs are inline level attenuators . Some attenuators control a stable frequency and nothing like what is a inline level attenuator. The things is that the community believes they two are the same and they really are not. Please take time to properly explain this to the community instead if half assing it and doing them a disservice. Not that you owe me or them shit but just saying dont put out info that is not true.

@RobotUnderground 2 жыл бұрын

@@filibertofonseca8083 99% of the bass knobs out there are just a potentiometer. Yes, some of them add crossover features, that's a different feature but still it's just a potentiometer controlling that as well. And you really should only set EQ's and crossovers once and then forget them.

@RobotUnderground 2 жыл бұрын

@@filibertofonseca8083 Feel free to open them up and examine them. Put the amp on the o-scope to see what they're doing so you can understand it yourself.

@RobotUnderground 2 жыл бұрын

@@filibertofonseca8083 I don't have the time or resources to dedicate explaining something that YOU in the community are responsible for. It's up to YOU to read books and understand electronic designs. Quit being a whiney little cunt and expecting me to solve your dumb problems that nobody cares about. BE RESPONSIBLE!

@Tekjive 3 жыл бұрын

Haha no candy coated bullshit, love it! 🤟🏻

@Jay-qv8hq 2 жыл бұрын

Man I want to do this I want to build subs and put brands like JL to shame . I've been saying this shit to people for years .. and I have an idea for a bass knob interface so there's a module at the amp connected to everything and like a cat 5 cable to my bass knob that monitors everything I'm going to work on it

@davntelisha19 Жыл бұрын

You forgot to say oh yeah you need a better alternator now 😂

@rickgore3350 2 жыл бұрын

Yeah ill just stick to using an oscilloscope to gain match my head unit output

@ThatsMrMark Жыл бұрын

💯💯💯💯💯💯💯💯 exactly

@sermac3246 2 жыл бұрын

👍

@joeJoe-pb3su Жыл бұрын

And I thought ssl amps were trash 🗑 🤔 thanks for sharing...

@RobotUnderground Жыл бұрын

Not at all

@darrelparenteau2795 3 жыл бұрын

Fucking awesome 👏

@markroberts715 2 жыл бұрын

Got knobs bro lol!!

@RobotUnderground 2 жыл бұрын

Fer sher!

@waltlivernois6241 8 ай бұрын

I miiss radio shask

@JrGarcia-dn6mp 2 жыл бұрын

13w7ae baby

@Contact_Info Жыл бұрын

If they don't know, say I do t know, dont bullshit, right?

@michaelzernie7092 Жыл бұрын

My Pioneer AVH-601EX has a max output of 4v. My A.P. APCLE30001.D has a max input of 5v. Don't know why guys telling me to get a line driver. Lol

@RobotUnderground Жыл бұрын

#Zactly !

@haroldpalmsesq2506 Жыл бұрын

You are not wrong. I agree with you. But you do understand that the Marketing Dept gives zero fucks what the Engineering Dept actually builds? This is because Marketing guys have zero tech knowledge and Engineering has no say.

@RobotUnderground Жыл бұрын

I understand.

@allmotorhash 3 жыл бұрын

but but jl audio patent technology on the tw1 and tw3 cost money 😄

@joshuawheeler4404 Ай бұрын

Your still not telling the whole story the whole reason you want a headunit to output at a higher voltage is to lower your noise floor. If your gain is all the way down on an amplifier especially for your mids and highs it's way less suseptible to interfere that's why headunits like that are usually doing it for sound quality and it absolutely does make a difference ta da half truths are whole lies

@RobotUnderground Ай бұрын

It's, "You're"

@TurboTyler Ай бұрын

So what are some good brands that are actually good for the money? Im talking the better China shit I guess.

@RobotUnderground Ай бұрын

This is all I've been using for like the last year. amzn.to/3Xim6C6

@jimzcatz 2 жыл бұрын

Video hint. Rotate your phone 90 degrees. Its 2022,learn how to take cell phone video...This sux!!!. I appreciate all the info BTW, but i couldn't watch such poor video.

@RobotUnderground 2 жыл бұрын

You cannot beat the price though.