Perlisten D215s: Is This the Most Accurate Subwoofer on the Planet?

shadyJ · Aug 6, 2021

We were left deeply impressed by Perlisten’s S7t in our recent review of that tower speaker (Audioholics Perlisten S7t Review), not just by the superbly neutral response but also by the fantastically low distortion combined with its wide dynamic range. This perked up our interest in their subwoofer line which features an innovative “push-pull” driver alignment. Aside from its state-of-the-art driver and amplifier technologies, the Perlisten D212s and D215s subwoofers also mount the drivers in such a way that can dramatically lower distortion. So how low can distortion be pushed down in a subwoofer? We decided to find out by taking a drive to Perlisten’s headquarters in Wisconsin and testing one for ourselves. Read on to see what we were able to measure from the Perlisten D215s subwoofer!

READ: Perlisten D215s Subwoofer Performance Review

ryanosaur · Aug 6, 2021

No measurements? Aw, shucks.

Thems be my favorite part!

beaRA · Aug 6, 2021

ryanosaur said:
No measurements? Aw, shucks.

Theme be my favorite part!

I'm guessing that's a technical error given the wording in the article?

"Before we get into our test results, let’s talk about these subs’ designs and what makes them so special."

shadyJ · Aug 6, 2021

There are measurements. It looks like the second page of the article didn't post. I am sure it will be fixed shortly.

Danzilla31 · Aug 6, 2021

shadyJ said:
There are measurements. It looks like the second page of the article didn't post. I am sure it will be fixed shortly.

Thread bump still can't find the second page

Pogre · Aug 6, 2021

Okay, the aluminum voice coil sounds interesting and the justification makes perfect sense to me. In fact, why don't more manufacturers use aluminum instead of copper for voice coils? It seems like you'd have nothing to lose and all to gain from my limited understanding.

Also, the push/pull configuration. Does that create negative pressure inside the box between the 2 drivers when they're in action? Is that what helps with linearity and control?

shadyJ · Aug 6, 2021

Pogre said:
Okay, the aluminum voice coil sounds interesting and the justification makes perfect sense to me. In fact, why don't more manufacturers use aluminum instead of copper for voice coils? It seems like you'd have nothing to lose and all to gain from my limited understanding.

Also, the push/pull configuration. Does that create negative pressure inside the box between the 2 drivers when they're in action? Is that what helps with linearity and control?

The push-pull creates a positive and negative pressure, but since the drivers are playing out of phase yet are mounted in opposite directions of each other, the pressure that they cause in the sealed cavity helps to reduce the nonlinear travel that only occurs in one direction of the driver's travel. Think of the air as a direct mechanical link between them. If the driver has a problem in the inward excursion, the linear outward excursion from the other driver pushes the problematic inward travel of the first driver into greater linearity. The force of the opposite driver uses air pressure to induce better behavior for the adjacent driver.

gene · Aug 6, 2021

Danzilla31 said:
Thread bump still can't find the second page

This is very frustrating. I'm trying to fix it but not having any luck yet.

ryanosaur · Aug 6, 2021

gene said:
This is very frustrating. I'm trying to fix it but not having any luck yet.

We understand Gene. We'll be patient a little longer. Say, maybe, another hour... But then it Spears and Torches!

...

We'll have a Luau while we wait!!!

Mmmm... Mai Tais and smokey Kalua Pork, Lau Lau, 2 scoop rice 1 scoop mac, and Butter Mochi...
*drools a little

lovinthehd · Aug 6, 2021

shadyJ said:
There are measurements. It looks like the second page of the article didn't post. I am sure it will be fixed shortly.

Was wondering what happened, thought we were back to the "preview" type article there.....

Danzilla31 · Aug 6, 2021

lovinthehd said:
Was wondering what happened, thought we were back to the "preview" type article there.....

Shadys teasing us bro

shadyJ · Aug 6, 2021

lovinthehd said:
Was wondering what happened, thought we were back to the "preview" type article there.....

Previews are articles that just cover product announcements and stuff like that. Not as substantial as a full review, but they can put interesting things on the radar of our readers. Nothing wrong with them, so long as you aren't expecting a full review. A full review is a lot of work though.

lovinthehd · Aug 6, 2021

shadyJ said:
Previews are articles that just cover product announcements and stuff like that. Not as substantial as a full review, but they can put interesting things on the radar of our readers. Nothing wrong with them, so long as you aren't expecting a full review. A full review is a lot of work though.

As long as it's not marked "review" and rather "preview" in such cases to distinguish those with measurements vs those without IMHO. We do appreciate the hits your body is taking on measuring the big subs in any case

Danzilla31 · Aug 6, 2021

shadyJ said:
Previews are articles that just cover product announcements and stuff like that. Not as substantial as a full review, but they can put interesting things on the radar of our readers. Nothing wrong with them, so long as you aren't expecting a full review. A full review is a lot of work though.

Didn't those specs say 300lbs how in the heck did you get it out there to measure?

shadyJ · Aug 6, 2021

Danzilla31 said:
Didn't those specs say 300lbs how in the heck did you get it out there to measure?

Dan Nagar · Aug 6, 2021

Please show the measurements and the rest of the review.... we can barely survive here

ryanosaur · Aug 6, 2021

C’mon, guys… he went to the company… they weren’t gonna trust a $9000 subwoofer to a guy posting X-rays of a broken spine! He had gophers!!!

gene · Aug 6, 2021

Second page is working now: