My test: 6-7k roundup. - Car Audio Classifieds!
Car Audio Classifieds!  

Go Back   Car Audio Classifieds! > Car Audio Help & Discussion > Testing & Scientific Data Discussion

Testing & Scientific Data Discussion Results from Speaker and amplifier Testing


Notices

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-22-2013, 05:12 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default My test: 6-7k roundup.

Let's get it on...



First, I want to give a big shout out to Ryan V. (Stovebolt) for his help with the testing. This shit would have taken me a whole weekend without his help. But we knocked it out in one day. Also like to thank him for the use of his truck as the testing grounds.

Disclaimer: Your mileage may vary! This is our test. You may have tested one of these amps and gotten more or less. And as a matter of fact, Ryan's truck is a bit of an enigma because I know a couple of these amps very well and I've gotten better results in my car than we saw in this test. Apparently, his truck is where clamps go to die. BUT... all these amps were given a fair shake and all of the testing and methodology was very consistent.

Speaking of methodology... we set the amps at max clean voltage unloaded with all filters wide open. For the load testing, if the wave was a bit dirty under load, we gave them each a chance to clean it up with a click or two down without handicapping output too much. So, some of the waves will be a bit of a soft clip. If they were still clean, we gave them a click or two up to give them a chance to make as much as they could while staying clean. But trying to stay as "everyday" as we could, we didn't fiddle with them all day. If they stayed dirty under load, them that's their problem.

This is a bit of a break from my normal testing, but I don't show DC voltage in any of the tests. But trust me... voltage drop is of very little concern here. Ryan has his electrical on lockdown. The important part is that all testing was at the same STARTING voltage. It's safe to assume that all of these results are near 14v. Why is that safe to assume? Because caps.




After setting unloaded, we went straight to 1 ohm resistive. Remember, resistive testing has no "rise" and the voltage and current are in phase. This test is similar to the AD-1 amp dyno except that we're showing you the wave and we can take liberty with the distortion or clip (if present). Since there is no rise, voltage = current in a 1 ohm test. That's why there is only voltage shown in the pics. There is no "clamp". Voltage squared is our result. The only break from this is the Crown since it's not a 1 ohm amp.
In between the resistive tests, the resistors were given a chance to cool. Lol.



With the resistors chillin (literally), we moved to the traditional clamping and TermLab result. Nominal load here is .25 (except the Crown) on a pair of Tantric HDD15's in a box that was built for Ryan's truck. Since the cargo area of Ryan's truck was our test bench, we ran leads to the CRX. All numbers are in the kick. The mic, box, seats, etc. all stayed in the same spot the whole time- which is actually difficult to accomplish if we had to shuffle amps in and out of the same vehicle. The same note was played each time.

Okie dokie. On to the testing. These will be in no particular order...
__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-22-2013 at 01:12 PM.
Reply With Quote Quick reply to this message
The Following User Says Thank You to TaylorFade For This Useful Post:
spl_robb (11-22-2013)
Sponsored Links
Advertisement
 
  #2  
Old 11-22-2013, 05:12 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

Digital Designs M4a

Rated - 5,200w @ 12v. 7,000w @ 14v
Price - $1,550 (dealer quote).

98acv unloaded.



1 ohm resistive. 6,000w. 71% efficient.



Clamp on subs. 6,490w rising to .9ohm. Note: I accidentally had the scope on "hold" in this pic. But you can see from above that it stayed clean under load. No worries here.



Score.

__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-22-2013 at 05:26 AM.
Reply With Quote Quick reply to this message
The Following 2 Users Say Thank You to TaylorFade For This Useful Post:
Ali888 (11-23-2013), blockburner (11-25-2013)
  #3  
Old 11-22-2013, 05:13 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

CT Sounds 7000.1d

Rated - 7,000w @ 12.8v
Price - $1,399

87acv unloaded.



1 ohm resistive. 7,000w. 71% efficient. This particular test was done earlier in the day. The battery on the Nano died so we switched to the Velleman. Everything else was the same. I swear. This was also the point at which I decided I needed the little tape name tags since the pics were piling up.



Clamp on subs. 7,930w rising to .8. You can see she got a little clippy here for some reason. The CT didn't like the subs much. Odd. Two clicks down got us a similar wave but only 6,900w. We decided to leave it where it was clean on the resistive test since that's the more accurate one. So, this result is the same settings as above.




Score from the same settings as resistive.

__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-22-2013 at 05:53 AM.
Reply With Quote Quick reply to this message
 
  #4  
Old 11-22-2013, 05:13 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

Popcorn Sounds 6k

Rated - 6,000w at 1
Price - Cheap. I don't know.

Unloaded. Now, this might seem impressive, but this is just a snapshot of voltage going ape shit. It was jumping between 70v and 200v and all points in between and I could NOT get a wave worth looking at from it. So... I don't know WTF to do with this thing.



1 ohm resistive. 5,100w. 60% efficient. And umm... one billion percent THD.



Clamp on subs. 5,700w rising to .9.



Score.

__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-22-2013 at 06:32 AM.
Reply With Quote Quick reply to this message
  #5  
Old 11-22-2013, 05:13 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

American Bass 750.1

Rated - 7,673w @ 1
Price - $1500-1600 (dealer quotes)

Unloaded. 94acv.



1 ohm resistive. 6,200w. 72% efficient. Little clip.



Clamp on subs. 7,100w rising to .8. Little mo' clip. Not too bad.



Score.

__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-22-2013 at 06:44 AM.
Reply With Quote Quick reply to this message
The Following User Says Thank You to TaylorFade For This Useful Post:
CortezDTV (11-22-2013)
  #6  
Old 11-22-2013, 05:13 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

JBL Crown 6000GTi

Rated - 1 x 8110W @ 4 ohms. 1 x 7400W @ 1 ohm
Price - (Discontinued) - $1,500+ used.

Holy hell. Got voltage? 235v. Jeebus.



5 ohm resistive. I know it's "rated" for 1 ohm, but it's Ryan's amp and he says it makes more power up here. So, 5 ohms it is. 5,200w at 5 ohms. 62% efficient.



Clamp on subs. We rewired the subs to a 4 ohm nominal. I have to show this because it's some seriously sexy shit.

3,200w rising to 12.5ohms



Since we were getting 3x rise, we decided to rewire to 1 ohm nominal.

6,400w rising to 3 ohms. Trust me... it's clean.



A/B powa!!!

__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-22-2013 at 07:08 AM.
Reply With Quote Quick reply to this message
  #7  
Old 11-22-2013, 05:13 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

Sundown Audio NS-1

Rated - 6,500w @ 1
Price - $1,799 (Amazon)

*Please note that this test was done fairly and accurately to my satisfaction, but was, in fact, not done by me. BUT... it was done concurrently with the CT at a later date than the rest of the roundup.

Comparison pic.



Unloaded.




1 ohm resistive. Juuuust getting into a solft clip. Maybe. Still pretty clean to me and better than some of the others.

5,800w. 72% efficient.



Clamp on subs.

6,550w rising to .9



I don't have a pic of the score. But the SPL portion was done in Ryan's truck for this one. Same box, same subs, same electrical. The CT was tested first as a baseline since it was the loudest in the other testing. So that there is no confusion between the score in my CRX and the score in Ryan's truck, I will just say that the NS-1 was...

.7db down from the CT. Assuming the scores scaled the same way, that would put the NS-1 ~ 157.9 in the CRX.
__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-26-2013 at 06:40 PM.
Reply With Quote Quick reply to this message
  #8  
Old 11-22-2013, 06:25 AM
TaylorFade's Avatar
SPL Retard
 
Activity Longevity
0/20 18/20
Today Posts
0/11 ssss12327
Location: Louisiana
Thanks: 265
Thanked 2,855 Times in 1,641 Posts
iTrader: (67)
Feedback Score: 67 reviews
Default

Wrap up.

Ok, so recap and in order of power made.

CT Sounds 7k - 7,930w - 158.6db.
American Bass 750.1 - 7,100w - 158.2db
Digital Designs M4a - 6,490w - 158.0db
JBL Crown 6000 - 6,400w - 158.2db
Popcorn Sounds 6k - 5,700w - 157.1db.

Not surprisingly, the amp that made the most power was the loudest. What is surprising (to some) is the amp that's 4th out of 5 in terms of apparent power was tied for 2nd in score. There's something to be said for A/B topology there. Even though I think it's some sort of hybrid.

Dollar per watt/score... I'll have to begrudgingly give the nod to the Popcorn. Even though I don't know how much they are. Assuming they're $800 or so? That's 14 cents a watt. Which is 3 cents cheaper than the CT. But I'd trust the CT waaaaaaaaay more than a Popcorn. The other (3) come in at ~ 22-23 cents per watt. Still a bargain for the quality of amp you're getting, IMO.

My thoughts...

CT Sounds - solid performer. Made the same power at 10.5 dcv as it did ~ 14v. This is great news for battery guys. That puts it in DD territory as far as low voltage beastliness. It's also a big bish if you're into that kinda thing. The white is clean but makes scuffs, scratches, smudges stick out like a **** on a fish. The pots on this amp were the "cheapest" of the bunch. I don't care for the plastic Phillips head pots. It's not a deal breaker. Just an observation. Bass knob/Voltmeter also earns bonus points from me. It has a clipping indicator on it too, but it's not of much use. It started flickering around 40acv when it made over double that clean. No surprise there since I've been telling y'all forever that those things are just a light show.

Side note on the CT: it's the only amp here with triple inputs. Ryan only had (2) spare leads so we tested it first with just duals. But we agreed to test all the amps the way they were designed. Fwiw... The 3rd input was worth .2 on the meter.

AB 750.1. I've got love for the VFL's. What I don't care for is AB's ratings of them. They've seemingly gone to "max" power ratings. The amps are solid enough. They don't need inflated rating to sell them. Do they? Bonus points for the AB being 18v stable. It would walk these others once you get past the 16v CT and 15.2v DD. But... That doesn't help the 12v guys. It's also a big ass amp physically. It dwarfs the M4a in size, but not so much in score. Still way up there on my recommend list even though I feel like it underperformed here. Most efficient of the bunch by what probably amounts to margin of error.

M4a... Oh how I love thee. Smallest amp in the bunch and perhaps a bit of an underdog in this one. It fell short of DD's 7k rating, but still made the most power per sq in of real estate. Low voltage monster. Bulletproof as they come. Doesn't like .25 much so it took a slower roll to get it there but it did fine. We tested the protection circuit pretty good finding the sweet spot on the roll. .35 is the lowest I'd recommend burping this one. Has the lowest operating voltage of all these amps. 15.2-15.3 or so is all you're likely to be able to run. Not a concern for 99% of people but its nice to have a little cushion in the voltage.

JBL Crown... This is one of those holy grail type amps. Its hyooooj. Entirely impractical. Not so efficient and 1,000% awesome. Do want. This test absolutely demolishes the efficiency myths floating around about this amp. It's really a gigantic, retardedly bad ass SQ amp. It's also a 2 channel so it was bridged here. It ALSO only has single inputs. And I'm now cursing the fact that we didn't test it with duals. Just might have caught that big white bish. This amp is just plain sex and the output test was just for funsies but it impressed me even though I've heard it before. This amp will be mine. Oh yes... It will be mine.

Popcorn Sounds... GFY.

Sunown NS-1 - Most expensive amp in the test. More optimized for high voltage operation so it was maybe at a disadvantage in this one. Still did well at 14v, but this one and the AB would really start stretching the others out with more voltage if that's your thing. This amp is basically an M4a that is operational to 19v. Which is awesome considering how much I like the M4a.
__________________
4x world champ
4x world record holder

Quote:
Welcome to the world of SPL.

Where nothing makes any fucking sense.
Quote:
Music and movies are art. Audio is a science.
- Floyd E. Toole

Last edited by TaylorFade; 11-26-2013 at 06:54 PM.
Reply With Quote Quick reply to this message
The Following 18 Users Say Thank You to TaylorFade For This Useful Post:
Ali888 (11-23-2013), BIGJEFF64 (05-01-2014), brad0069 (11-26-2013), bump4life (03-19-2014), CLRagland1 (11-22-2013), CortezDTV (11-22-2013), cthedinger (11-26-2013), dasinde91 (02-13-2014), enemyofsilence (11-07-2016), EpicenterDesigns (11-26-2013), k3n12ock (11-22-2013), KTMrida4life (11-22-2013), LoudnProud (11-23-2013), n8skow (01-24-2014), nino23 (02-26-2014), SINTORMAN (11-23-2013), vetkilr (11-22-2013)
  #9  
Old 11-22-2013, 06:31 AM
Car audio classifieds, stereo sales, subwoofer amps mids classified caraudio, BANNED!!
 
Activity Longevity
0/20 13/20
Today Posts
0/11 sssss1027
Location: texas
Thanks: 47
Thanked 27 Times in 27 Posts
iTrader: (2)
Feedback Score: 2 reviews
Default

Where is the rest of the info on the other amps?
Reply With Quote Quick reply to this message
  #10  
Old 11-22-2013, 06:43 AM
Elite Member
 
Activity Longevity
0/20 18/20
Today Posts
0/11 sssss3986
Location: Lafayette, IN
Thanks: 108
Thanked 502 Times in 320 Posts
iTrader: (14)
Feedback Score: 14 reviews
Default

SLOW!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Car Audio Classifieds! forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Location
Where you live
Level of Car Audio Knowledge
What's your level of car audio?

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
DD Z-SE Test thawaxshop Car Audio Videos 17 04-03-2012 01:30 PM
6 iraggi alts 1000amp load test&single 380 test 98HOEONSIXEZ Car Audio Videos 21 06-11-2010 10:24 AM
GM-Chrysler Merger Rumor Roundup: Deal To Be Done By Halloween Patrick Simmons General Automotive Chat 7 10-22-2008 10:18 PM
Heart of Texas Mustangs 8th Annual All Ford Roundup ~ McGregor TX ~ 09-27-2008 Patrick Simmons Car Show Feeds 0 09-22-2008 03:02 AM

» Amps
A/d/s/
Advent
Alphasonik
Alpine
American Bass
ARC Audio
Atomic
Audio Art
Audio Gods
Audiobahn
Audiocontrol
Audiopipe
Audison
Aura
Autotek
Avionixx
Bazooka
Beyma
Blaupunkt
Boss
Boston Acoustics
Bravox
Cadence
Cascade (CAE)
CDT Audio
Cerwin Vega
Clarion
Clif Designs
Concept
Coustic
Critical Mass
Crossfire
Crunch
DB Drive
DC Audio
DC Power
DEI
Denon
Diabolo
Diamond
Digital Designs
Directed
DLS
Dual
DYnamat
Dynaudio
Earthquake
Eclipse
Elemental Designs
ESX
Eton
Farenheit
Fi Car Audio
Fix My Speaker
Focal
Fusion
Genesis
Ground Zero
Hafler
Helix
Hertz
Hifonics
Hushmat
Image Dynamics
Infinity
Interfire
JBL
Jensen
JL Audio
JVC
Kenwood
Kicker
Knu Konceptz
Kole Audio
Kove Audio
Lanzar
Lightning Audio
Linear Power
MA Audio
Magnat
Marantz
Massive Audio
MB Quart
McIntosh
Memphis
Metra
MMATS
Mobile Authority
Morel
MTX
Nakamichi
Niche Audio
O2 Audio
Ohio Generator
Optima
Orion
Oxygen Audio
OZ Audio
PG Audio
Phase Linear
Phoenix Gold
Pioneer
Polk
Power Acoustik
Powerbass
Powermaster
Precision Power
Profile
Pyle
Pyramid
RadioShack
Rainbow
Rampage
RE AUdio
Rockford Fosgate
Scanspeak
Scosche
Seas
Sony
soundstream
Sparkomatic
SPL Dynamics
Stinger
Sundown Audio
Swiss Audio
Targa
TC Sounds
TREO Engineering
TRU
Tsunami
Ultimate
US Acoustics
US Amps
Velodyne
Vifa
Viper
Visonik
Xtant
Zapco
Zed Audio
Powered by vBadvanced CMPS v3.2.3
Links
Amp Guts
amplifier, amp guts, ampguts, car audio classifieds, speakers and subs for sale with listings of 12 volt sound systems. Security systems for sale for aftermarket car audio equipment with amplifier and amps for sale
Car Audio Forum
car audio forum, moble audio, car stereo, wholesale car audio, 12 volt, with, amplifier, amp, subwoofer, sound quality, buy car audio, and sell automotive stereo systems for cars
Car Audio Sound Quality Forum
Sound QUality science based car audio forum, amplifier, subs and speaker design, fabrication help, sound systems forum, aftermarket car audio website for sound quality.
Car Stereo Forum
DIYMA car audio stereo forum for 12 volt car audio subwoofer and amplifier systems that have sound quality with wholesale car audio products.


All times are GMT -5. The time now is 04:45 AM.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.