Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

Some speaker driver measurements...
Some speaker driver measurements...
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 8th July 2019, 07:41 PM   #341
sashiok is offline sashiok  Moldova
diyAudio Member
Join Date: Oct 2018
Default Atohm LD 150 CR04 driver

Hi, Here is my mini review of ATOHM LD 150 CR04 driver, Price is 240euro/piece, Review of this driver is only a reference to SB 15NRXC30-08 that is very popular and have a lot of measurements on net.
ATOHM LD 150 CR04: The suspension is very stiff !!! aprox 2.5 times stiffer than of SB; The resonance is measured only through high resistance resistor connected in series, that made a very clear SPL peak of 76hz in free air (it is very high resonance compared to usual 100cm2 driver) in a 9.7 liter box the resonance was 94hz that resulted the VAS is 5.3 lit !!! Driver was not burned very long, but anyway it is stiff. The QTS was not measured but it is higher than 0.6. The building quality is excellent. The company does not specify what type of cone material (alliage specifique), but by feelings it is a type of plastic that is very stiff compared with other, the edge of cone can be bended so it is not metal.
Measurements: Note!!!! Read data of ATOHM LD 150 CR04 only as reference to SB 15NRXC30-08 that both were measured in same box and conditions :
SPL Note Atohm spl was recessed by 3db because it has higher sensitivity than SB by 3db for the same voltage input. This was done for better comparison.
atohm vs sb 60cm.png

Distortion in percent of Atohm LD 150 CR04 (missing f5 component)
distortion atohm.png

Distortion in percent of SB 15NRXC30-08 (missing f5 component)
distortion sb.png

CSD of Atohm with a notch filter 6.3khz 12db q=4 taking the peak off for making the opportunity to see full csd window below useful 3khz (that is not possible with peak present)
atohm noch 6.3khz 12db q4 csd.png

CSD of SB with a notch filter 8khz 12db q=2 taking the peak off for making the opportunity to see full csd window below useful 3khz (that is not possible with peak present)
sbacoust noch 8khz 12db q2 csd.png
My subjective impression: Donít expect this expensive driver not to color the sound; It has some color: I feel a little bit of plastic sound (yes I know about placebo and prejudice, because I already think that the cone is like plastic, have no idea what is the reason but steel fell like this) but it does not sound boring like other plastic cone that have blurred attach; by contras it accentuate some hits type sound like: clap hands, finger snap, some drums kicks; it also accentuate growling sound, horn sound. Sometimes this coloration is pleasant, hearing big horn sound I want to up volume to maximum and enjoy the power. Please ignore the implementation as a source of the main coloration; I can easy make flat response with DSP or equal it to SB acoustics with rational crossover point Ö.. no matter, the sound of both have colorations and they sound very different. My recommendation donít buy this driver until you hear it; You can listen to commercial speakers of the same brand Atohm gt1 where this driver is implemented and then make decision. To me it has a bit more resolution then SB, more attention on voices, mids and attacks, but SB sound warmer more relaxed. If price where no object I would chose Atohm but it is 5 !!! times more expensive then SB so Atohm is low value driver, even more some would prefer the sound of SB over Atohm. You can listen to Atohm gt 1 through youtube reviews +headphones, it is not a serious listening but it will give some idea of how it sound.
  Reply With Quote
Old 11th July 2019, 04:15 PM   #342
HiFiCompass is offline HiFiCompass  Ukraine
diyAudio Member
Join Date: Jan 2018
Thank you for the contribution. I have never worked with Atohm speakers.
  Reply With Quote
Old 13th July 2019, 10:26 AM   #343
HiFiCompass is offline HiFiCompass  Ukraine
diyAudio Member
Join Date: Jan 2018
The measurements of the Morel SCW636 woofer have been added:

Morel SCW636 | HiFiCompass
  Reply With Quote
Old 20th July 2019, 09:38 AM   #344
HiFiCompass is offline HiFiCompass  Ukraine
diyAudio Member
Join Date: Jan 2018
The measurements of the Morel TSCM634 midrange speaker have been added:

Morel TSCM634 | HiFiCompass
  Reply With Quote


Some speaker driver measurements...Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Driver distortion measurements? maggiesnmacs Multi-Way 10 14th May 2016 06:28 PM
MA driver measurements tuxedocivic Full Range 67 13th April 2014 11:55 PM
Comparing REW, ARTA and CLIO in speaker driver and acoustic measurements panson_hk Equipment & Tools 28 9th April 2014 08:40 AM
Driver measurements Legis Multi-Way 0 12th October 2010 06:08 PM
Mic distance for driver measurements ted4412wilt Software Tools 5 17th December 2009 08:35 PM

New To Site? Need Help?

All times are GMT. The time now is 10:34 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio