Cactus 7k or Stetsom 7k2d
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beajay2525
Junior Member
what ohm is them btl's
power-fanatic07
5,000+ posts
Knockin Doors Down
i agree with this dude. plus when you strap 2 smaller amps against a single amp rated the same rms you usually end up getting more power out of the pair.
TnT_Sounds
10+ year member
profiling gets **** done!
//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
halfwaytohell
10+ year member
CarAudio.com Elite
hmmm
TnT_Sounds
10+ year member
profiling gets **** done!
eh
halfwaytohell
10+ year member
CarAudio.com Elite
hmm
+1 for Stetsom.
Here test from Termpro forum, tested by db Don:
I was asked to post my review here. The Stetsoms were my amplifiers and the SD's were a friend of mines. The system was dual 9518G's CF cone&cap. With 12 D1000's. Extensive frontstage to compliment the sub bass. Peak spl and power comparisons were done at the spl peak of 41 hz.
If you need any other questions answered I will do my best to answer them for you.
I must say I was surprized at the SD8k and the SQ it had over the 7K2D's I have. Stetsom still has the spl crown but its benefits over the SD8k are fewer than last time I tested it. SD still has a crappy power block but I see potential for a custom built block in the case.
Stetsom 7k2D and Soundigital comparison on SPL output, Sound Quality at 1 ohm load at 18 volt power.
Sound Quality:
Stetsom 7K2D (6 out of 10).
The stetsoms has a bit of system noise as with the SD's but its more noticeable
in the Stetsom. The bass does hit hard we were happy to hear it turned up to just under the
point of clipping. Its no class A/B amp but its still good.
Soundigital 8K (8 out of 10).
With less system noise than the Stetsoms probably due to the less fans in the amplifiers
the Soundigitals were immediatly noticably tighter bass and control over the same songs
used for the Stetsoms. Although easily clipped the Soundigitals did do a much better in
the SQ than the Stetsoms.
SPL & Power:
Stetsom 7K2D (9 out of 10).
The Stetsom is one of the most powerful amps I have ever tested for the money.
These amps were only .16 dB ahead of the Soundigital at 1 ohm but they continue
to produce increased spl where the SD did not below 1 ohm. If any load below 1 ohm
is required then this is your amp for a burp. I still would not recommend below 1
ohm daily musical load unless the right circumstances were there.
With 156.33dB@41 hz this amp is the top pick for pure spl enthusiest,
especially below 1 ohm.
Soundigital 8k (8 out of 10).
The Soundigital is also one of the most powerful amps I ever tested and it is the most
power in my opinion for any amp per SQ inch it uses up. While producing more power to the meter
it distorted much easier than the Stetsom and readings went really high. I would put this on par with
Stetsoms power and then some at one ohm. The SPL was 156.17 so .16 dB behind the Stetsoms is nothing to
worry about. Keep the impedence at one ohm and make sure the clip light is not solid
while playing music and your in buisness. Definately the daily driver pic for me with its size
and SQ over the Stetsoms. Just keep it clean and no less than 1 ohm ever.
Special Features and Needed improvements:
Stetsom 7K2D (8 out of 10)
-Love the subsonic
-Gain is ok but not great.
-Crossover is ok but need clicks or some way to set multiple amps to the same x-over frequency without scope.
-Clearly this amp needs at the very least dual 1/0 power and ground but it does have a nice single 1/0 power block.
-The amp needs a gain dial up front with clip/power/protect indication like most other amps feature.
-Speaker outputs need to be 4 guage.
-This amp needs quieter fans!!!
Soundigital 8K (7 out of 10)
-subsonic and gain is on par with stetsom and needs the same.
-I would like to see a 9v minimum gain, many line drivers are 9v and would make set-up easy.
-crossover also needs click settings so one could calculate approx x-over point without scope.
-The size of this amp is freeking small
-These power blocks on it are garbage and while they "just" do the job, I feel so much would be gained with a better
way to connect multiple 1/0 power and ground.
-The fans are very quiet on this amp all things considered.
-The amp needs a gain dial up front with clip/power/protect indication like most other amps feature.
-Speaker outputs need to be at least 4 guage also.
Conclusion,
After testing both I feel that both amps have their strong points. Stetsom is more spl orientated
and does gain power and spl below 1 ohm for burps only while the Soundigital seemed happiest at 1 ohm.
Any attempt to lower the load resulted in protection on the SD8k. The 7k2D is happiest right around .5 ohm or
a bit less but only for burps I recommend. It does produce much more power and spl in .5 ohm load but not
worth the risk using it at that load daily. If your limited by amp size the choice is a no brainer,
the SD is 30% smaller, sounded better and the fans were quieter. Looking for pure muscle for burps under 1 ohm,
then 7K2D would be the choice. Each amp clearly has faults and shining points but you can be sure both companies
are constantly improving their amplifiers so what I tested may not apply next month.
Here test from Termpro forum, tested by db Don:
I was asked to post my review here. The Stetsoms were my amplifiers and the SD's were a friend of mines. The system was dual 9518G's CF cone&cap. With 12 D1000's. Extensive frontstage to compliment the sub bass. Peak spl and power comparisons were done at the spl peak of 41 hz.
If you need any other questions answered I will do my best to answer them for you.
I must say I was surprized at the SD8k and the SQ it had over the 7K2D's I have. Stetsom still has the spl crown but its benefits over the SD8k are fewer than last time I tested it. SD still has a crappy power block but I see potential for a custom built block in the case.
Stetsom 7k2D and Soundigital comparison on SPL output, Sound Quality at 1 ohm load at 18 volt power.
Sound Quality:
Stetsom 7K2D (6 out of 10).
The stetsoms has a bit of system noise as with the SD's but its more noticeable
in the Stetsom. The bass does hit hard we were happy to hear it turned up to just under the
point of clipping. Its no class A/B amp but its still good.
Soundigital 8K (8 out of 10).
With less system noise than the Stetsoms probably due to the less fans in the amplifiers
the Soundigitals were immediatly noticably tighter bass and control over the same songs
used for the Stetsoms. Although easily clipped the Soundigitals did do a much better in
the SQ than the Stetsoms.
SPL & Power:
Stetsom 7K2D (9 out of 10).
The Stetsom is one of the most powerful amps I have ever tested for the money.
These amps were only .16 dB ahead of the Soundigital at 1 ohm but they continue
to produce increased spl where the SD did not below 1 ohm. If any load below 1 ohm
is required then this is your amp for a burp. I still would not recommend below 1
ohm daily musical load unless the right circumstances were there.
With 156.33dB@41 hz this amp is the top pick for pure spl enthusiest,
especially below 1 ohm.
Soundigital 8k (8 out of 10).
The Soundigital is also one of the most powerful amps I ever tested and it is the most
power in my opinion for any amp per SQ inch it uses up. While producing more power to the meter
it distorted much easier than the Stetsom and readings went really high. I would put this on par with
Stetsoms power and then some at one ohm. The SPL was 156.17 so .16 dB behind the Stetsoms is nothing to
worry about. Keep the impedence at one ohm and make sure the clip light is not solid
while playing music and your in buisness. Definately the daily driver pic for me with its size
and SQ over the Stetsoms. Just keep it clean and no less than 1 ohm ever.
Special Features and Needed improvements:
Stetsom 7K2D (8 out of 10)
-Love the subsonic
-Gain is ok but not great.
-Crossover is ok but need clicks or some way to set multiple amps to the same x-over frequency without scope.
-Clearly this amp needs at the very least dual 1/0 power and ground but it does have a nice single 1/0 power block.
-The amp needs a gain dial up front with clip/power/protect indication like most other amps feature.
-Speaker outputs need to be 4 guage.
-This amp needs quieter fans!!!
Soundigital 8K (7 out of 10)
-subsonic and gain is on par with stetsom and needs the same.
-I would like to see a 9v minimum gain, many line drivers are 9v and would make set-up easy.
-crossover also needs click settings so one could calculate approx x-over point without scope.
-The size of this amp is freeking small
-These power blocks on it are garbage and while they "just" do the job, I feel so much would be gained with a better
way to connect multiple 1/0 power and ground.
-The fans are very quiet on this amp all things considered.
-The amp needs a gain dial up front with clip/power/protect indication like most other amps feature.
-Speaker outputs need to be at least 4 guage also.
Conclusion,
After testing both I feel that both amps have their strong points. Stetsom is more spl orientated
and does gain power and spl below 1 ohm for burps only while the Soundigital seemed happiest at 1 ohm.
Any attempt to lower the load resulted in protection on the SD8k. The 7k2D is happiest right around .5 ohm or
a bit less but only for burps I recommend. It does produce much more power and spl in .5 ohm load but not
worth the risk using it at that load daily. If your limited by amp size the choice is a no brainer,
the SD is 30% smaller, sounded better and the fans were quieter. Looking for pure muscle for burps under 1 ohm,
then 7K2D would be the choice. Each amp clearly has faults and shining points but you can be sure both companies
are constantly improving their amplifiers so what I tested may not apply next month.
sundownz
Pro Seller
Supporting Vendor
I would probably agree in this instance if the Cactus 7k is like the Atomic board... those boards do NOT do well daily. From what I understand they have too many output transistors for the driver board the handle.
The new Cactus amps don't have that issue.
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