Question about JBL S312 Main / Stereo Speaker

3 Answers

JBL S312 lacks "punch" in bass response

I have a set of JBL S312's. These speakers are actually noted for thier strong bass response. The bass is wonderfull at low/moderate volumes (90db - 95db) however when I "crank-it" (95db - 105 db) the bass response becomes flacid. I like the tight punchy bass response of the speakers at low volumes - how do I achieve this at higher volumes? I am currently using a JVC RX-517 AV reciever and at first I though this was the culprit so I swapped it out with a Yamaha RX-596 stereo reciever (80 wpc @ 8ohms), there was a very small improvement. I suspect that the problem I am having is a combination of poor damping factor rating of the amplifier combined with a large 12" driver "pushing back" on the amplifier. The Yamaha (which I suspect is the better of the two recievers) has a damping rate of 240 (not bad), I suspect that if I had an amplifier with a respectable damping rate of 500 or higher I would achieve beeter controll of the woofer cone which would result in tighter/punchier bass? I have read a review of a guy with the same speakers (JBL S312) and a NAD 370 and he complains of the same problem which made me scratch my head, I assume that NAD amp have a good damping factor? Please offer your oppinions (cost effective oppinions)

Posted by on

  • sherrjam
    sherrjam Feb 18, 2009

    It has been my experience that cutting upper bass (250 hz) by -6db to -12db can help eliminate “muddiness”/”boom” however this is not the case, I am lacking “punch” – the type you can feel in the chest. I have experience in sound reinforcement (as an enthusiast only) and I never had to cut or limit low frequencies to improve the perception of bass. I know many people feel that sound reinforcement products are crude and completely different than home speakers however they are very similar. What makes sound reinforcement speakers inaccurate is due to their need to be efficient (in many cases up to 100 db spl at 1w). Their construction is very impressive – massive magnets with robust cast aluminum baskets, edge wound (flat wound) voice coils. At any rate I don’t want to discount your advice I will try it and report back with my results.

  • Gio107 Mar 13, 2009

    Samne with me.....same problem....what about Upgrading the drivers??? what about having the same crossover done again with quality components.....maybe better coils,better resistances..etc.

    I think thise will work just fine.What about upgrading  the 12" woofer with a more powerful 12" woofer more  efficient one???

×

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Hi sherrjam,
I was the guy that was complaining regarding the lack of slam with JBL S312II's.
The problem was solved by upping the amp power to 300W RMS per channel (got two NAD C370's as monoblocks, 300W RMS each).
Get yourself an amp that can put out 300W per channel and you won't be complaining about the lows of S312II's :-)
Regards, Damir

Posted on Jun 09, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Dear friend....Why you dont join to my proyect???? See? I love my JBL s312 II .

I been getting drunk on them many times.And They have served Very well.

After 5 years of critical listening....i started hearing some descoloration just in 5% of my music. The Bass was an issue for me..i mean the same problem.After all this time I decided..what the hell...let me open these babies and let me see what are they made of.

To My Surprice......I saw a mother board with a very poor components.....I was so mad.But...wait a sec....They have served well all these years...I could not get rid of them like that....Well?

I got in touch with a guy over the internet.He told me that MY crossover components are bad. basically....capacitors of 2 dollars,and...inductors of 5 dollars....yes yes yes (Shame On You JBL)

Anyway....basically...I am Upgrading the same crossover same values with better components....I have not done yet but I already have all the pieces and components.I will let you know how it goes.
It can no go bad....see? Same components......just better quality that's all.

Like the orange juice....sunny delight vs tropicana my friend....

In this case.... Electrolitic capacitors vs Polypropylene capacitors = image,authority,performance.Dinamics.

Now to be honest...I dont know yet the results ok..because I have to put all the parts together. But In Theory...is 100% accurate.

Better components better results. If I were you.....and dont want to take this huge steps like me....Just take the crossover and change the capacitors to a better one( Polypropilene capacitors)
And you will for real heard improvement.

Posted on Apr 06, 2009

  • Gio107 Jun 09, 2009

    Here is the solution...check my videos.

    http://www.youtube.com/user/Gioxtream
    Hope it helps.
    Gioxtream.

×

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

The one thing I have noticed with all speakers( no matter what brand or cost) The higher the volume you need to adjust your bass just a little lower, because at high volumes the power draw is so demanding for the speakers they can not keep up with the rate of the music, so lowering the bass a little at high volumes will allow the subs to be able to keep up with the music

Posted on Feb 18, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Find a JBL n24aw replacement speaker


Looks like the woofer is a 4" Polyplas shielded driver, part #NS-W4SS, 4 ohms. If JBL can't supply a replacement try looking at Madisound or Partsexpress. Find a 4" 4 ohm woofer or mid-bass driver with a round frame. Check the actual measurements against your driver because not all "4 inch" drivers are the same size or bolt pattern. Make sure the depth will fit. You don't need "shielded" unless the speakers will be right up against a CRT (and nobody uses CRTs these days). Get a pair and replace both because the new driver certainly won't match the old.

Take a look at the Dayton Audio RS100-4 from Parts Express (or Amazon). The Hi-Vi M4N from Madisound "may" work but it is 8 ohms. http://www.jbl.com/resources/Brands/jbl/Products/ProductRelatedDocuments/en-US/TechnicalSheet/NSP1%20SAT%20ts.pdf

Sep 05, 2014 | JBL Audio Players & Recorders

1 Answer

E1@cox.neti have a jvc rx-809v and I was wondering if it was posibbie to hook up an a sansui amp to compinsate for the lack of base


You mean 'bass'.

Amplifiers only amplify what is already there in the signal. By design, with all controls set to neutral or flat, they don't create or loose anything.

Speakers, on the other hand, are responsible for turning the electrical input into moving air. Good bass usually requires moving a lot of air.

Poor speaker placement or speakers wired out of phase with each other can **** the bass out of a room.

Web search for articles on bass response and speaker placement.

This receiver has a built-in Equalizer. Perhaps you could use IT to compensate for the tonal shortcomings of the speakers and environment.

Aug 12, 2011 | JVC RX-818V Receiver

1 Answer

I've had this system for 2 months i was very pleased with the sound but today watching a movi i noticed bass lacks the usual punch


Have you proven it is a problem across the board or was it just that particular source/movie that lacked punch? What about your speaker calibration? Check it.

Apr 24, 2011 | Jamo A 102 HCS 5 System

1 Answer

Crossover to Es 100 to JBL 8400P. I have Harmon kardon 460 reciver?


setting Crossover frequency is trying to find the best frequency where the sub will see below that frequency and the es100 will see above that set frequency for maximum speaker efficiency.

8400P, i believe has a adjustable crossover frequency or cut frequency from 50-150Hz.

The e100 has a rated frequency response of 32Hz to 40kHz. So, the lows going to the sub, will allow the es100 to not have to handle deep bass frequencies.

So, I would suggest starting at 100Hz. That would mean your sub will be seeing roughly 100Hz and down, and the es100 will see roughly 100Hz and up.

Listen to your favorite music, and adjust accordingly.

Apr 05, 2010 | JBL Studio L 8400P Subwoofer

2 Answers

I have 7.1 speakers attached to my receiver, I am using 16 guage wiring and yet I still find the sound in some movies is very inaudible..almost tinny unless I change the audio to 7 channel stereo. My two...


There are a multitude of user settings that can affect the apparent loss of bass you describe. Since you mention it is relevant to a soundfield choice that sort of eliminates hardware problems.

Find the SET Menu and set everything under SOUND according to your actual speaker configuration. For the purposes of set up, consider the word LARGE to mean "CAN handle substantial low bass" and SMALL to mean "would distort or be destroyed by substantial low bass".

Under LFE/Bass Out, the Front/Both setting addresses the sharing (or not) of Low Frequencies with Large Front speakers. I recommend BOTH if your front speakers have large woofers or are otherwise bass-capable (since physical size isn't everything).

Run through the speaker Distance and Level adjustments. The LFE/Level will have a huge effect on perceived bass so check it out.

Check the Dynamic Range. It's vague about what optimim is, but avoid using MIN. I'd try MAX or STD for expected loud listening.

Run Low Freq Test to match the sub to your other speakers.

There are lots of opportunities in this beast for MALadjustment. It's your responsibility to understand the settings you select.

Dec 05, 2009 | Yamaha HTR-5790 Receiver

2 Answers

Just wondering what the power supply output JBL Media 3 Speakers


I have a pair of Media 3 JBL computer speakers. I am using a generic 12V DC adapter rated at 1000mA with a positive tip polarity, and it works fine.

Aug 15, 2009 | JBL Audio Players & Recorders

1 Answer

Amplifiers GT Series GT5-A604 ........explain settings


the amp probably has a x-over knob, a bass boost knob, and an eq knob. the eq is probably an internal crossover switch that will take the output from either high range (tweeters) or full range (6x9s) or low pass (subs) leave it on low pass. the bass boost however, will add distortion if turned up too high. its not noticable in the car, actually it sounds louder in the car but if you open the trunk and listen, you can tell its distorted bass and actually frying your speakers. the x-over knob is used to tune the frequency at which the amp stops pushing out bass tones. if you like rock music loud, turn it up higher, if you like low deep rap bass, turn it lower. keeping it too high might give you bad sound from either type though. ALSO THE GAIN OR LEVEL.IT IS NOT TO MAKE YOUR SUBS LOUDER IT WILL BLOW THEM .the gain is used to set your amp to your head unit which there is a procedure to do it.

Jun 15, 2009 | JBL GT5A604E 4-way Car Amplifier

1 Answer

Not gettin enough bass


Hello saini_jatt_2, On the JBL3501 700 watt monoblock, you have adjustments for low pass and a setting for boost marked DBO, allowing you to select and boost the frequencies sent to the subs. If your amp is not the 3501, but a different JBL amp, the settings may be different. Set the LP to either the white dot (about 100Hz) or slightly below to about 80Hz. Set the HP to about midscale or slightly higher. Set the boost to wherever the bass sounds best. One other setting that will affect bass volume is the "input level" or gain control. It should have been properly set by your installer, but you can "tweak" it for best performance. Turning it up increases the sensitivity and matches it with the output from your head unit. Too high will cause distortion. Too low will result in less bass. So you want to set it just to the point that you begin to hear the distortion and then back it off slightly until the distortion disappears. Hope this helps.

Jun 05, 2009 | JBL GTO1202D Car Subwoofer

1 Answer

I cant adjust bass


You proberly have to download some drivers or them mate, google it :)

please rate

thanks

Feb 21, 2009 | HP JBL Platinum Computer Speakers

Not finding what you are looking for?
JBL S312 Main / Stereo Speaker Logo

1,178 people viewed this question

Ask a Question

Usually answered in minutes!

Top JBL Audio Players & Recorders Experts

Michael Edwards
Michael Edwards

Level 1 Expert

53 Answers

 Grubhead
Grubhead

Level 3 Expert

4946 Answers

Vito Vacirca Jr.

Level 2 Expert

140 Answers

Are you a JBL Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...