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JL Audio C2-650X Evolution Series 6-1/2" 2-way car speakers
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From JL AUDIO
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Report Info:
Note: While Amazon.com claims 280 Ratings, we counted 140 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
FAIL Suspicious Reviewers
FAIL Overlapping Review History
WARN Deleted Reviews
WARN Reviewer Ease
WARN Reviewer Participation
PASS Rating Trend
PASS Unverified Purchases
PASS Word Count Comparison
PASS Phrase Repetition
PASS Brand Repeats
PASS Incentivized Reviews
Most Trusted Reviews
I bought these less than 2 years ago and the ... [Go to full review]
Jan 3, 2020
100%
TRUST
TRUST
- Verified Purchaser
- Contains repetitive phrases (show)
- Critical Reviewer (avg. rating: 3.9)
Least Trusted Reviews
Great speakers I use in the dry cabin of my ... [Go to full review]
Dec 21, 2014
0%
TRUST
TRUST
- Verified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 1.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Overrepresented Participation (posted 8 Reviews)
- Easy Grader (avg. rating: 4.8)
Analysis Details
Fail Suspicious Reviewers
Take-Back Reviewers
37 of the 140 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Single-Day Reviewers
1 of the 140 reviewers have written multiple reviews but posted all of them on a single day. The Single-Day reviewers have rated this product an average of 1.0 while all other reviewers rated this product an average of 4.6. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
3% also reviewed:
KONG - Cozie Rosie Rhino - Indoor Cuddle Squeaky... by KONG
2% also reviewed:
BOSS Audio Systems KIT2 8 Gauge Amplifier... by BOSS Audio Systems
2% also reviewed:
Lion Brand Yarn Bonbons Yarn by Lion Brand Yarn
2% also reviewed:
Essential Oil Set - Aromatherapy for Diffusers,... by Radha Beauty
2% also reviewed:
Certified Refurbished Fire TV Stick with Alexa... by Amazon Renewed
2% also reviewed:
Blue Sea Systems ST Blade ATO/ATC Fuse Blocks by Blue Sea Systems
1% also reviewed:
Le Creuset by Le Creuset
Does not include products
from the same brand
from the same brand
12 of the 140 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 5.0 while the reviewers who have a more unique product review history rated this product an average of 4.5. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn Deleted Reviews
We discovered a total of 2 deleted Reviews for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Warn Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.5, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.5 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn Reviewer Participation
-
- 41%
- From reviewers with an overrepresented participation
We see the following 1 participation group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 58 reviewers (or 41%) are within an overrepresented participation group. While this is more reviews from overrepresented participation groups than we'd expect to see, the discrepancy in ratings between reviewers in an overrepresented participation groups and all other reviewers isn’t significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
-
- 0%
- Created on high-volume days
We counted 140 reviews for this product over the span of 3,689 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
9 of the 140 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Word Count Comparison
-
- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
5 reviews
(4.8/5)
(4.8/5)
4 reviews
(4.8/5)
(4.8/5)
6 reviews
(4.5/5)
(4.5/5)
2 reviews
(5.0/5)
(5.0/5)
3 reviews
(4.7/5)
(4.7/5)
2 reviews
(4.5/5)
(4.5/5)
2 reviews
(5.0/5)
(5.0/5)
3 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(4.5/5)
(4.5/5)
20 of the 140 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.