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No bass from the subwoofer - Atlantic Tech T70PBM

Older Atlantic Technology T70 PBM subwoofer, part of a full 5.1 system.
getting no bass from the powered sub. speakers set to SMALL so sub should work, crossover set to 150hz like it's supposed to, getting power, not in standby mode, cable is properly connected. (can a sub cable go bad?) is there a fuse in this sub? when I run through the setup on the receiver, I either can nothing from the sub or the signal comes out of the left front surround speaker.

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2 Suggested Answers

SOURCE: sound problems through subwoofer

check all speakers wires andcheck test mode. every thing ok, may be input wiring problem ,check every thing after that internalcircuit may be problem..

Posted on Oct 09, 2007

  • 104 Answers

SOURCE: subwoofer rattle

Try filling the inside of the enclosure with insulation [roof insulation will work ] or a small pillow just to see if its the box or the driver rattling if its the driver you might have to secure it to the enclosure with screws or something ,

Posted on May 23, 2009

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I'm trying to connect a small bass speaker to a Sony micro system


There is no place in the picture that would connect a bass speaker to your system. The outputs are for full range speakers so a sub will never work on this system

Jun 19, 2015 | Sony Speakers & Subwoofers

1 Answer

I have wharfdale atlantic 400se. The tweeter is no longer working. How do i work out if it is a cross over or the tweeter


If there was a traumatic high-volume event that preceded this problem, I'd guess the tweeter died.

If you can access the connections on the tweeter and you have an ohmmeter, you could disconnect the tweeter and measure across the the terminals. A shorted or open voice coil = dead tweeter. A measurement near the stated impedance is probably ok.

If you have NO ohmmeter, you could carefully connect the output of one amplifier channel directly to the tweeter and just scooch the volume upward slightly from silence while playing something with very little bass in it. If you hear it, the tweeter is alive.

Apr 18, 2011 | Wharfedale Atlantic 100 Rear Speaker

1 Answer

Unable to receive optimum output. The bass is totally flat !


Hi, ok the Bose Acoustimass III system consists of two small cube speakers and one subwoofer unit called the Acoustimass bass module. If the subwoofer stops working, three points can be the cause of the failure. The Bose Acoustimass III is a passive system, meaning the speakers do not power themselves, but instead are connected to a receiver or amplifier. Thus, the amplifier, the speaker between the amplifier and the subwoofer, or the subwoofer itself could be the issue.

Things You'll Need:

* Amplifier
* Speaker cable
* Extra subwoofer


Instructions


Disconnect the speaker cable from the back of the Bose Accoustimass bass module and connect it to a subwoofer that is known to be working. If the subwoofer works, the bass module needs to be replaced.


Disconnect the speaker cable from the back of the receiver or amplifier you are using and from the back of the subwoofer in Step 1.


Connect a speaker cable that is known to be working between the back of the receiver or amplifier and the back of the Accoustimass module. If the module starts working, then the cable was the issue.


Disconnect the speaker cable from Step 3 from the back of the amplifier or receiver, then connect the cable to the subwoofer port on the back of an amplifier or receiver that is known to be working. If the subwoofer works, the receiver was the issue. If the subwoofer still does not work, verify that the speaker cable is in the subwoofer port of the receiver/amplifier and that the cable is connected securely to the subwoofer.



If you think you did the connection properly,Fine... If not you can use the manual from the below link and know how to connect it properly..

products.bose.com/pdf/customer_service/owners/og_am5iii.pdf


Have a nice day..

Feb 19, 2011 | Bose Acoustimass 5 III System

1 Answer

Can we use the subwoofer as an amplifier for speakers? it has jacks for speaker in/out, but i can't figure out how to make it work because the speakers have no sound.


I don't believe this hookup is amplified; but, if you have used the regular unfiltered speaker connections from your receiver/amplifier to hookup the subwoofer, the system will pass the signal thru the outputs subject to the crossover adjustment on the back panel. You cannot get the full signal if your system is sending only the bass signal to the subwoofer. I have copied the instructions below from the manual. You would set the high freq crossover to the low end of your satellite's frequency range. The full manual is here: http://www.jbl.com/EN-US/Products/Pages/ProductSupportDetails.aspx?PID=PSW-D110

High-Pass Control
• If you hooked up your subwoofer
as shown in Hookup
3 on page 4, you also have
the capability of adjusting
the high-pass frequency.
The High-Pass control
determines the frequency at
which the main speakers
will start reproducing
sounds. If your main speakers
can comfortably reproduce
some low-frequency
sounds, also set this control
to a lower frequency
setting, between 50Hz –
100Hz. This will concentrate
the subwoofer’s
efforts to the ultradeep
bass sounds, while your
main speakers continue to
reproduce the mid-bass
information. If you are
using smaller bookshelf
speakers that do not extend
to the lower bass frequencies,
set the high-pass crossover
control to a higher setting,
between 125Hz – 180Hz.
With this setting, your main
speakers will not have the
burden of reproducing any
low-frequency sounds.
• If you hooked up your subwoofer
as shown in Hookup
1 on page 3, the high-pass
frequency is fixed at 180Hz.
• If you hooked up your subwoofer
as shown in Hookup
2 on page 4, there is no
high-pass control. Unless
your receiver/amplifier
incorporates a high-pass
crossover, your main speakers
will continue to get a
full-range signal.
Final adjustment and blending
of the low-pass and high-pass
controls may evolve over several
listening sessions. A good
starting point would be to set
both the low- and high-pass
controls to the same frequency
and adjust from that point.

Sep 07, 2010 | JBL PSW-D110 Speaker

2 Answers

Have this Bose system connected to my Yamaha a/v receiver


If you have it literally conencted the way you say not much good will happen.

The speaker OUTPUTs for the Yamaha feed the INPUTS on the Acoustimass Module then the satellites branch out of the Acoustimass Module's OUTPUTs.

Acoustimass module
Bose® recommends putting your Acoustimass module at the same end of the room as the
television monitor. To prevent interference, keep the module at least 2 feet (.6 m) from the
television.
• You may hide the Acoustimass module behind or under furniture, but do not block the
opening. Be sure there is at least 2 inches (5 cm) between the opening and any surface.
• If the opening faces the wall it increases the bass; if it faces away it decreases the bass.
For the most bass response, place the opening 2 to 3 inches (5 to 8 cm) from a wall or
corner.
• Stand the Acoustimass module vertically or horizontally (Figure 6). To stand it on the
cable connection end, remove the cover by gently pulling it away

Move the sub closer to a wall or corner to increase the bass.

This is a SYSTEM and as such is not designed to be pieced out or separated. I don't recommend that you try it that way. I doubt it will improve the sound.

Apr 30, 2010 | Bose Acoustimass 10 III System

1 Answer

No bass response


Seems there are 2 underlying problems-

no am/fm? are antennas connected? is there static active on any station tuned to?

in terms of low bass response- double check settings both in the receiver and also on the sub itself if any available.

Jan 14, 2010 | Bose Acoustimass 5 III System

1 Answer

Any idea why my Mackie swa1501 bass bin has blown 2 speakers in the last 3 months? Bass Drum is the heaviest instrument going through it, but I never let it clip, I also run a fan on it which keeps it...


does your swa1501 get hot just being switched on ?
sounds like your output transistors breaking down or your dc to dc rectifier is shorting this would dumping high voltage to the speaker. I guess your speaker coil is burnt . check Q4,Q5,Q7,Q12.Q14,Q15,Q17 and Q18 these are all mosfet transistors that commonly break down..

Oct 01, 2009 | Mackie SWA1501 Subwoofer

1 Answer

Home Theater Subwoofer rattles


Sounds like the controls have a buildup of dust on them and creating a magnetic charge and thus noise. Radio Shack sells "Tuner wash" Use it sparingly, it only takes a little, then work the controls back and forth for a few seconds and turn back on. You may have to do this a couple times to fully clean the potentiometer (vol control) (crossover control) Take the knobs off the unit before you spray it. If you have a high gloss finish on the sub, put a rag around the control to keep excess wash off the plastic. It will varnish a gloss finish. Just use it carefully. Hope this helps

Jun 22, 2009 | Atlantic Technology System 170 System

1 Answer

Subwoofer rattle


Try filling the inside of the enclosure with insulation [roof insulation will work ] or a small pillow just to see if its the box or the driver rattling if its the driver you might have to secure it to the enclosure with screws or something ,

May 18, 2009 | Atlantic Technology System 170 System

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