bigbassman
Premium Member
Master of all things loud
First off I wanna thank Chad Harvey for allowing use of his garage, and meter, and bathroom for today's fun.
Also wanna thank the guys who came over to play //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
First Testing was in my car, with the Mach 5's and the Mags.. this was not designed to be a comparison of the 2.. because there isn't one.. lol that's the difference between a 450 dollar driver.. and a 40 dollar one..
the vehicle is an 05 Chevy Aveo, 5 door hatch. the box is 4.5 cuft, with 3 - 4" aero's.. with a 33hz tuning
amplifer used was an Incriminator Audio 20.1
power was normalized @ 60hz by use of true RMS reading Clamp, and DMM... 60hz was chosen because it was out of the impedence spike area for this box.. normalizing power between drivers assures all drivers get the same juice.. Of course the power levels shown are with 2 drivers, so each getting half the power..
frequency response was measured via Termlab USB, with the sensor mounted ear level, on the headrest. All windows and doors were kept shut for testing.
LOOK!
Yes.. the numbers appear low.. for reference, when the car is running @ 2k rpm, and the amplifier is adjusted differently.. and the mic is on the dash sealed up, or in the car with the door open.. the 2 mag's do a 145 on the dash, and a 150 in the kick... I've had some feedback from users saying "Man thats not loud at all".. try it in your vehicle.. and see what you do with the mic on the headrest, sealed up.. car off.. @ 35hz, with nobody in the vehicle //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif The reason testing was done how it was, is to lessen the amount of varibles, to ensure fair testing.. with the car off, its much easier to regulate voltage level, with the windows up, you remove outside interference from skewing results... its just much easier to obtain legitimate data.. ok.. stepping down from the soapbox
First off... 2 SI mag 12's
Not a whole lot to say about em.. they wang.. hard..
after frequency testing... I picked the loudest frequency and went full power on the amp... rolling volume up until spl maxxed out, and recording current and voltage to establish wattage.
at 40hz, the mags did a 141.1 db, with exactly 2000 watts
at 35hz, the mags did a 141.8 db, with 2116 watts
at 30hz, the mags did a 138.7 db, with 2280 watts
no issues with the drivers to report.. fully capable of handling the power levels provided...
next up, we loaded the Mach 5 Audio 12's into the box..
Testing was stopped at 800 watts, due to beginning driver stress (I was being very cautious today for some reason)
we then found loudest frequency, and let the 20.1 loose on them.
@ 35hz, the Mach 5's did a 138.2 with 1843 watts
@ 40hz, the Mach 5's did a 137.3 with 1050 watts
as you can see from frequency response testing, to this testing... the Mach 5's have a good flat response.. but ran into some compression
Next.. we switched it up... A friend came over with his 94 Ford Ranger, ext cab.. and he has a single 12" box, thats 2.0 cuft, tuned to 32hz via slot port, with a 400 watt orion amp for power..
we did this to show you the difference between vehicle boosting acoustics.. the ranger has a much smaller cabin, therefore.. its easier to pressurize the space.. you'll see from the testing numbers.. they are significantly higher in the ranger..
all the same test methods used in the aveo, apply here..
first up... a Sidewinder 12 from Mass Destruction Audio
testing was stopped at 200 watts due to coil fatigue..
after a rest, we then turned the orion loose on it... lol
at 45hz, the sidewinder did a 131.3 with 515 watts
at 50hz, the sidewinder did a 130.6 with 528 watts
As you can see from the graph.. the woofer ran into severe compression with 200 watts... it's not exactly a power happy driver..
Issues... the big one is suspension sag.. the coil rested 10mm behind center..
Next up, a single Mach 5 Audio 12"
we did not get to progress testing past 50 watts, due to the speaker developing a coil rub clanging with 100 watts.. after investigating, this was due to spider deflection.. in which I'm working on fixing..
at the least you'll be able to see the difference in cabins from 1 12, and 2 in my car, with 50 watts..
Issues.. suspension geometry... I'm working on a solution for that I think..
Finally... the almighty Q-Power 12
as you can see... no low end extension... but she got **** loud in the upper frequencies.. and handled the 100 watt test without failure..
issues... its a 6 dollar speaker... do I need to go into it? lol
to finish the day... the q power had to die..
to its credit.. it took over 400 watts for nearly 2 minutes @ 65, and then 20 hz before it died.. vids will be posted //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Jim and vlad have plenty of pics and videos to share... and I think Jim will comment some on how the mach 5's and mag's sounded.. as he spent some time in my car with both sets of drivers..
due to the second vehicle testing.. we ran out of time to do any ground plane testing... but I'll do my best to include it in the real test session
OH... almost forgot... after all testing was done in my car.. I benched the 20.1 again..
after spending 2 hours playing .4 nominal, and .7 nominal..
car was turned off.
11.72 volts, 317 amps 3715 watts in
45.7 volts, 55.5 amps 2536 watts outs
.82 actual load, 68% efficient..
Thanks for looking!
Loyd L.
Also wanna thank the guys who came over to play //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
First Testing was in my car, with the Mach 5's and the Mags.. this was not designed to be a comparison of the 2.. because there isn't one.. lol that's the difference between a 450 dollar driver.. and a 40 dollar one..
the vehicle is an 05 Chevy Aveo, 5 door hatch. the box is 4.5 cuft, with 3 - 4" aero's.. with a 33hz tuning
amplifer used was an Incriminator Audio 20.1
power was normalized @ 60hz by use of true RMS reading Clamp, and DMM... 60hz was chosen because it was out of the impedence spike area for this box.. normalizing power between drivers assures all drivers get the same juice.. Of course the power levels shown are with 2 drivers, so each getting half the power..
frequency response was measured via Termlab USB, with the sensor mounted ear level, on the headrest. All windows and doors were kept shut for testing.
LOOK!
Yes.. the numbers appear low.. for reference, when the car is running @ 2k rpm, and the amplifier is adjusted differently.. and the mic is on the dash sealed up, or in the car with the door open.. the 2 mag's do a 145 on the dash, and a 150 in the kick... I've had some feedback from users saying "Man thats not loud at all".. try it in your vehicle.. and see what you do with the mic on the headrest, sealed up.. car off.. @ 35hz, with nobody in the vehicle //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif The reason testing was done how it was, is to lessen the amount of varibles, to ensure fair testing.. with the car off, its much easier to regulate voltage level, with the windows up, you remove outside interference from skewing results... its just much easier to obtain legitimate data.. ok.. stepping down from the soapbox
First off... 2 SI mag 12's
Not a whole lot to say about em.. they wang.. hard..
after frequency testing... I picked the loudest frequency and went full power on the amp... rolling volume up until spl maxxed out, and recording current and voltage to establish wattage.
at 40hz, the mags did a 141.1 db, with exactly 2000 watts
at 35hz, the mags did a 141.8 db, with 2116 watts
at 30hz, the mags did a 138.7 db, with 2280 watts
no issues with the drivers to report.. fully capable of handling the power levels provided...
next up, we loaded the Mach 5 Audio 12's into the box..
Testing was stopped at 800 watts, due to beginning driver stress (I was being very cautious today for some reason)
we then found loudest frequency, and let the 20.1 loose on them.
@ 35hz, the Mach 5's did a 138.2 with 1843 watts
@ 40hz, the Mach 5's did a 137.3 with 1050 watts
as you can see from frequency response testing, to this testing... the Mach 5's have a good flat response.. but ran into some compression
Next.. we switched it up... A friend came over with his 94 Ford Ranger, ext cab.. and he has a single 12" box, thats 2.0 cuft, tuned to 32hz via slot port, with a 400 watt orion amp for power..
we did this to show you the difference between vehicle boosting acoustics.. the ranger has a much smaller cabin, therefore.. its easier to pressurize the space.. you'll see from the testing numbers.. they are significantly higher in the ranger..
all the same test methods used in the aveo, apply here..
first up... a Sidewinder 12 from Mass Destruction Audio
testing was stopped at 200 watts due to coil fatigue..
after a rest, we then turned the orion loose on it... lol
at 45hz, the sidewinder did a 131.3 with 515 watts
at 50hz, the sidewinder did a 130.6 with 528 watts
As you can see from the graph.. the woofer ran into severe compression with 200 watts... it's not exactly a power happy driver..
Issues... the big one is suspension sag.. the coil rested 10mm behind center..
Next up, a single Mach 5 Audio 12"
we did not get to progress testing past 50 watts, due to the speaker developing a coil rub clanging with 100 watts.. after investigating, this was due to spider deflection.. in which I'm working on fixing..
at the least you'll be able to see the difference in cabins from 1 12, and 2 in my car, with 50 watts..
Issues.. suspension geometry... I'm working on a solution for that I think..
Finally... the almighty Q-Power 12
as you can see... no low end extension... but she got **** loud in the upper frequencies.. and handled the 100 watt test without failure..
issues... its a 6 dollar speaker... do I need to go into it? lol
to finish the day... the q power had to die..
to its credit.. it took over 400 watts for nearly 2 minutes @ 65, and then 20 hz before it died.. vids will be posted //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Jim and vlad have plenty of pics and videos to share... and I think Jim will comment some on how the mach 5's and mag's sounded.. as he spent some time in my car with both sets of drivers..
due to the second vehicle testing.. we ran out of time to do any ground plane testing... but I'll do my best to include it in the real test session
OH... almost forgot... after all testing was done in my car.. I benched the 20.1 again..
after spending 2 hours playing .4 nominal, and .7 nominal..
car was turned off.
11.72 volts, 317 amps 3715 watts in
45.7 volts, 55.5 amps 2536 watts outs
.82 actual load, 68% efficient..
Thanks for looking!
Loyd L.
