# Check out the new AN-3 beast of a woofer **URL:** \ **Category:** Loudspeakers\ **Created:** [August 21, 2019, 9:21pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379 "2019-08-21T21:21:13Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![danm](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/danm/32/51196_2.png) [@danm](https://forum.psaudio.com/u/danm)\ **Post date:** [August 22, 2019, 2:32am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/21 "2019-08-22T02:32:42Z")
And I thought that rumbling tonight in Boulder was the thunderstorms. Can you turn it down over there in North Boulder? šŸ˜‰ ---
**Author:** ![gfuhrer](https://avatars.discourse-cdn.com/v4/letter/g/ecccb3/32.png) [@gfuhrer](https://forum.psaudio.com/u/gfuhrer)\ **Post date:** [August 22, 2019, 3:08am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/22 "2019-08-22T03:08:59Z")
Those look amazing. Is this kind of design being considered for the Sprout speakers ? ---
**Author:** ![st50maint](https://avatars.discourse-cdn.com/v4/letter/s/4af34b/32.png) [@st50maint](https://forum.psaudio.com/u/st50maint)\ **Post date:** [August 22, 2019, 3:50am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/23 "2019-08-22T03:50:43Z")
Who manufactures these drivers? ---
**Author:** ![falling\_leaves](https://avatars.discourse-cdn.com/v4/letter/f/a9adbd/32.png) [@falling\_leaves](https://forum.psaudio.com/u/falling_leaves)\ **Post date:** [August 22, 2019, 5:56am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/24 "2019-08-22T05:56:21Z")
Damn! Very cool! What is the projected sensitivity for the AN3? ---
**Author:** ![abeiklou](https://avatars.discourse-cdn.com/v4/letter/a/3ab097/32.png) [@abeiklou](https://forum.psaudio.com/u/abeiklou)\ **Post date:** [August 22, 2019, 7:13am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/25 "2019-08-22T07:13:24Z")
Wow, insane stuff! Damn, it now definitely wonā€™t fit in my living room! ā˜¹ What are the cross over points per 4 drivers? How do you ensure smooth transition, specially from mid-bass coupler to ribbon midrange which has a different sound characteristic? ---
**Author:** ![Baldy](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/baldy/32/223847_2.png) [@Baldy](https://forum.psaudio.com/u/Baldy)\ **Post date:** [August 22, 2019, 9:30am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/26 "2019-08-22T09:30:45Z")
I think they are designed in house and custom made just for this project ---
**Author:** ![Vmax](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/vmax/32/19896_2.png) [@Vmax](https://forum.psaudio.com/u/Vmax)\ **Post date:** [August 22, 2019, 11:29am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/27 "2019-08-22T11:29:34Z")
Got to see the grill design that keeps one from tickling the fabric. Being a line array fan I am just imagining the possibilities. ---
**Author:** ![Brodric](https://avatars.discourse-cdn.com/v4/letter/b/c68b51/32.png) [@Brodric](https://forum.psaudio.com/u/Brodric)\ **Post date:** [August 22, 2019, 11:37am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/28 "2019-08-22T11:37:45Z")
The driver excursion is impressive, I grant them that. ---
**Author:** ![Paul](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/paul/32/6_2.png) [@Paul](https://forum.psaudio.com/u/Paul)\ **Post date:** [August 22, 2019, 1:04pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/29 "2019-08-22T13:04:24Z")
That is exactly correct. We have multiple vendors that can make these for us and weā€™re in the process of evaluating each to see who has the best quality control, etc. Theyā€™re not easy builds. The lead wires are all carefully sewn into the custom spiders and the tolerances are quite exact. Letā€™s just say that so far the house that built these also builds some really expensive drivers you know all about and might be surprised, but I am under NDA by the company. ---
**Author:** ![Paul](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/paul/32/6_2.png) [@Paul](https://forum.psaudio.com/u/Paul)\ **Post date:** [August 22, 2019, 1:11pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/30 "2019-08-22T13:11:06Z")
Thanks, Brodric and if I may toot our horn a little, whatā€™s really cool is not just the 2.25ā€ excursion but the fact that excursion is linear and low distortion with room to spare on either side. The trick was to match the driver with the amp so the maximum the amp can produce will always be within the linear range of the driver. ---
**Author:** ![MarADyr](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@MarADyr](https://forum.psaudio.com/u/MarADyr)\ **Post date:** [August 22, 2019, 2:13pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/31 "2019-08-22T14:13:46Z")
Paul, the AN-3 looks very interesting and impressive. I have been interested in a pair, however I am now wondering how to power these multiple 700 watt speaker amplifiers without having to refit the audio room with bigger AC cable and multiple P20s. Itā€™s time for my reality check. I suppose Iā€™ll have to wait for the smaller AN versionsā€¦ Yet, I am still planning to visit PS Audio in October and listen to the AN-3 and the big IRS speakers! Canā€™t wait! ---
**Author:** ![jamesh](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/jamesh/32/3871_2.png) [@jamesh](https://forum.psaudio.com/u/jamesh)\ **Post date:** [August 22, 2019, 4:47pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/32 "2019-08-22T16:47:09Z")
But keep in mind that they are class D amps. Though capable of 700w, class D amps are biased so differently that they hardly ever need to actually pull that much current from the power source. ---
**Author:** ![retro](https://avatars.discourse-cdn.com/v4/letter/r/4491bb/32.png) [@retro](https://forum.psaudio.com/u/retro)\ **Post date:** [August 22, 2019, 5:07pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/33 "2019-08-22T17:07:33Z")
Please tell us more about the new servo system? No accelerometerā€¦?? ---
**Author:** ![Jedi](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/jedi/32/45790_2.png) [@Jedi](https://forum.psaudio.com/u/Jedi)\ **Post date:** [August 22, 2019, 7:19pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/34 "2019-08-22T19:19:15Z")
Theyā€™re basically the M700s I assume with some modifications for servo feedback? You guys using a secondary coil instead of accelerometer? ---
**Author:** ![retro](https://avatars.discourse-cdn.com/v4/letter/r/4491bb/32.png) [@retro](https://forum.psaudio.com/u/retro)\ **Post date:** [August 22, 2019, 7:40pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/35 "2019-08-22T19:40:54Z")
I thought using a second voicecoil for feedback was/is inferior to accelerometer designsā€¦? ---
**Author:** ![Elk](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/elk/32/1240_2.png) [@Elk](https://forum.psaudio.com/u/Elk)\ **Post date:** [August 22, 2019, 8:43pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/36 "2019-08-22T20:43:01Z")
> [@Paul](#): > > The trick was to match the driver with the amp so the maximum > the amp can produce will always be within the linear range of the driver. Very clever, akin to carefully driving a vacuum tube within its linear range. ---
**Author:** ![Paul](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/paul/32/6_2.png) [@Paul](https://forum.psaudio.com/u/Paul)\ **Post date:** [August 22, 2019, 9:22pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/37 "2019-08-22T21:22:34Z")
No, I am not a fan of the coil for measuring motional feedback. If weā€™re going to use an actual device itā€™ll be an accelerometer. However, Chris, Bob, Darren and I are conspiring to try something really new using DSP modeling as a servo. ---
**Author:** ![1cdfoley](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/1cdfoley/32/101112_2.png) [@1cdfoley](https://forum.psaudio.com/u/1cdfoley)\ **Post date:** [August 22, 2019, 9:37pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/38 "2019-08-22T21:37:10Z")
Paul, Most exciting news, thank you. I may have missed it, what material is used in making the 12" cone? Chas ---
**Author:** ![stonefree1911](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/stonefree1911/32/92419_2.png) [@stonefree1911](https://forum.psaudio.com/u/stonefree1911)\ **Post date:** [August 22, 2019, 10:48pm UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/39 "2019-08-22T22:48:04Z")
I love the idea of the midbass coupler. I was thinking that driving Maggie LRSā€™s or .7ā€™s down to 300hz, crossing to a 6 1/2" coupler 300hz to 70hz, crossing to a 12" sub 70hz and lower(all powered) would be a cool DIY mod. Of courseā€¦Iā€™m not really sure how to do thatā€¦ ---
**Author:** ![Jedi](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/jedi/32/45790_2.png) [@Jedi](https://forum.psaudio.com/u/Jedi)\ **Post date:** [August 23, 2019, 2:50am UTC](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379/40 "2019-08-23T02:50:48Z")
So you guys are basically doing a predictive servo? That is, you have all the driver variables like mass, suspension stiffness at various points in travel, magnet flux at various voicecoil positions, etc. so you know when to ā€œapply the breaksā€ based on frequency and amplitude. Amirite? Amirite? [Previous page](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379.md?page=1) [Next page](https://forum.psaudio.com/t/check-out-the-new-an-3-beast-of-a-woofer/12379.md?page=3)