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SMD Distortion Detector Testing and Review!


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when you tested was bass boost all the way down on bass amps? and what about bass knob

shame shame shame...should be using a LC1

School me on why one use the LC1 over bass knob

most bass knobs are gain adjustments or bass enhancers.

an lc1 cuts signal through the rca so that you arent introducing anything to the mix. your taking away up to 100 percent of the bass by turning the knob down. Of course you set the amp with that knob all the way up though.

I wasnt fond of the LC1. I found that even when i turned the knob all the way down it still let a fair amount of bass through. I use a BC-101 basically the same thing. It does have another knob tho, I have yet to completly figure out what exactly its supposed to do. its adjustable from 40-150Hz. But yeah when setting your amps, make sure the knob is all the way open that way you have more control over the amount of signal you let through.

nothing to do with the DD1 but if you are using the CD to set it and playing music with an Iphone or Itouch there will be distortion. I saw the guy with the crescendo and btls was playing with an Iphone. if you didnt do it, you should of set the gains with the Iphone playing tones. something about the Iphones, the just put out more signal, my car when Itouch > Zune > CD it terms of what was louder on the same deck volume

This is an excellent point! Also something that I will include in the revised production owner's manual. If the customer's primary source is an iPhone, iPod, ect, the tracks from the CD should be ripped to the iPod at the highest bit rate possible, and then use that as the source for all testing. Also, very important, iTunes "Sound Check" HAS TO BE TURNED OFF during this process. If not the iTunes software will adjust the level of the tracks and mess you up.

This is very true. I say set your gains according to the way you listen to most music, for example if you listen to CDs more than anything else use a CD to set gains, If Ipod is your thing use that, USB...whatever it is use that source for best results.

if you still had bass with it all the way down you did somethign wrong...its a 100 percent cutouf to signal.. or yours was broken.

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So i wasn't happy with the testing side of the vid....but the review i stand by! lol So i set up my head unit and my NEW amp in a quick no fuss video....should be much better....i'll throw it up tomorrow!

My POS Bass machine-
2003 Hyundai Santa Fe on some shitty 22's
Bed Liner Paint Job-Pioneer AVH 3200DVD
4 DAD BD series 15's in a 4th Order (Bassheads ENT Design)
4 Arc Audio XDI2000.1 for the woofers
6 Cadence CVL68MBX 6.5's-Cadence CVL88MBX 8's-6 Cadence XT20 Supertweeters
2 Arc Audio KS300.4's for mids and tweets
1 Arc Audio ALD 10v Line Driver
All Audiotechnix Power wire
1 DC Power 270XP High Output Alternator
1 XS Power D3400 up front....6 XS Power D3100's in the rear
Air Lift 1000 Bags in rear to help with suspension
If your still reading this GFY.......

6iW2jaE_zpsb3084721.png
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Ok....here's my PROPER SMD DD1 testing video...enjoy!

My POS Bass machine-
2003 Hyundai Santa Fe on some shitty 22's
Bed Liner Paint Job-Pioneer AVH 3200DVD
4 DAD BD series 15's in a 4th Order (Bassheads ENT Design)
4 Arc Audio XDI2000.1 for the woofers
6 Cadence CVL68MBX 6.5's-Cadence CVL88MBX 8's-6 Cadence XT20 Supertweeters
2 Arc Audio KS300.4's for mids and tweets
1 Arc Audio ALD 10v Line Driver
All Audiotechnix Power wire
1 DC Power 270XP High Output Alternator
1 XS Power D3400 up front....6 XS Power D3100's in the rear
Air Lift 1000 Bags in rear to help with suspension
If your still reading this GFY.......

6iW2jaE_zpsb3084721.png
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Sure looks like a great tool to have.... wish I had the $ to get one... maybe someday...

Some people need a sympathetic pat... on the head...with my hammer

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Sure looks like a great tool to have.... wish I had the $ to get one... maybe someday...

I'm sure the main man will show you some love :drink40:

My POS Bass machine-
2003 Hyundai Santa Fe on some shitty 22's
Bed Liner Paint Job-Pioneer AVH 3200DVD
4 DAD BD series 15's in a 4th Order (Bassheads ENT Design)
4 Arc Audio XDI2000.1 for the woofers
6 Cadence CVL68MBX 6.5's-Cadence CVL88MBX 8's-6 Cadence XT20 Supertweeters
2 Arc Audio KS300.4's for mids and tweets
1 Arc Audio ALD 10v Line Driver
All Audiotechnix Power wire
1 DC Power 270XP High Output Alternator
1 XS Power D3400 up front....6 XS Power D3100's in the rear
Air Lift 1000 Bags in rear to help with suspension
If your still reading this GFY.......

6iW2jaE_zpsb3084721.png
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nothing to do with the DD1 but if you are using the CD to set it and playing music with an Iphone or Itouch there will be distortion. I saw the guy with the crescendo and btls was playing with an Iphone. if you didnt do it, you should of set the gains with the Iphone playing tones. something about the Iphones, the just put out more signal, my car when Itouch > Zune > CD it terms of what was louder on the same deck volume

i also thought about this, but you just got around to posting about it before i did, what if steve or someone could upload the test tones that are on the cd that comes with the DD1 so we could download'em directly to our Itunes? then we wouldnt have to worry about ripping them? :shrug: idk thats just a suggestion i thought about....

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Twisted, aren't you supposed to use the RCA jack to find the clipping on the HU?

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My 02 Accord Wall Build

2 Sundown Audio Nightshade V1 18s --- 1 SAZ 3500

Sundown Audio 100.4 --- 4 Sundown Audio Neo-Pro 8s

Sundown Audio 125.2 --- 2 Morel MD-12 Tweeters , 2 Selenium ST-200 Tweeters

DC Power 270xp --- 4 XS Power D1200s | 1 D5100R

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nothing to do with the DD1 but if you are using the CD to set it and playing music with an Iphone or Itouch there will be distortion. I saw the guy with the crescendo and btls was playing with an Iphone. if you didnt do it, you should of set the gains with the Iphone playing tones. something about the Iphones, the just put out more signal, my car when Itouch > Zune > CD it terms of what was louder on the same deck volume

nothing to do with the DD1 but if you are using the CD to set it and playing music with an Iphone or Itouch there will be distortion. I saw the guy with the crescendo and btls was playing with an Iphone. if you didnt do it, you should of set the gains with the Iphone playing tones. something about the Iphones, the just put out more signal, my car when Itouch > Zune > CD it terms of what was louder on the same deck volume

maybe ill put this to the test when mine comes in.

yeah I think pretty much all ipods do that cuz my ipod at max volume hooked up to the head unit aux, makes the head unit distort at 30 out of 35, if I put a CD in it distorts at 34 out of 35, I know i still need to get it tested with the DD-1 though.

Its all about signal levels, the jack on your Iphone is a headphone output not a pre-out. There is a larger voltage coming out of it, then would be found on your RCA's. So there is less headroom for your head-deck to amplify the signal, thus the lower volume before clipping.

want to understand a little more? Check this out.

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