No bass coming from speakers. VW transporter T5.1

azazl187 · 26 Jul 2021 at 10:34

Hi all,

A week or so ago I noticed that the sound was suddenly really tinny in the van.

There just doesn't seem to be any bass at all coming from the speakers.

I've taken the factory head unit out and unplugged and plugged everything back in. Cables and connector look fine. Checked fuse on the back of the unit and it's fine.
Ive also checked all the settings and tried turning the bass up to max but still no bass but noticeable distortion in music quality.

I've taken the door card off and checked the speakers and wires that end. The speaker still works and vibrates but only treble and no bass.

No bass from any of the speakers.

Im guessing it could be a faulty head unit, something to do with the built in amp as it's both speakers in the doors that seem to be suffering.

Any ideas peeps?

K.C. Leblanc · 26 Jul 2021 at 18:04

It might have a separate bass speaker, so could be an issue with that or the cross over. Bass is less directional so even in a stereo system you might only have a since bass speaker.

Scania · 26 Jul 2021 at 19:49

This sounds like your kids have been sat in the car fiddling with settings…..

azazl187 · 27 Jul 2021 at 12:17

K.C. Leblanc said:
It might have a separate bass speaker, so could be an issue with that or the cross over. Bass is less directional so even in a stereo system you might only have a since bass speaker.

I've had a bit of a look and can't see that there is any speakers other than the front dash tweeters and the door speakers

azazl187 · 27 Jul 2021 at 12:18

Scania said:
This sounds like your kids have been sat in the car fiddling with settings…..

I did wonder if it was something I had done to the settings but all checked and all set correctly

Denes Lehoczki · 8 Mar 2022 at 13:26

Hi azazl187!
Did you find the root cause of the no bass issue?
I have a vw T5 multivan and I lost the bass from the front door speakers. The back speakers are working fine. Thank you!

azazl187 · 8 Mar 2022 at 19:16

Denes Lehoczki said:
Hi azazl187!
Did you find the root cause of the no bass issue?
I have a vw T5 multivan and I lost the bass from the front door speakers. The back speakers are working fine. Thank you!

Yes I did bud! I ended up just buying new speakers and fitting those. It sorted the issue right away even though I couldn't see anything visibility wrong with the old ones.

Poor thread management there from me. I should have returned with my fix.

Denes Lehoczki · 8 Mar 2022 at 19:46

Thank you for the information. It looks the speakers are blown in my car as well. What kind of speakers did you buy? Size in diameter? Wattage ? Ohm?
Thank you!

azazl187 · 8 Mar 2022 at 20:34

Denes Lehoczki said:
Thank you for the information. It looks the speakers are blown in my car as well. What kind of speakers did you buy? Size in diameter? Wattage ? Ohm?
Thank you!

These are the speakers and specs -

Volkswagen VW Transporter T5.1 JVC 6.3/4" Inch 17cm (600 Watt a Pair Total) 2 Way Front Door Car Speakers & Brackets/Connectors

Main Features:

600 watts peak power (pair)
300 watts peak power (each)
30 watts RMS output
2 Way
Frequency Response: 30 - 22,000Hz
Impendance: 4 Ohms
Sound Pressure Level: 92dB/W.m
17cm (6.3/4'') Mica Cone Woofer
25mm (1'') Poly-Ether Imide Balanced Tweeter
Ferrite Magnet (Woofer)
Neodymium Magnet (Tweeter)
Hybrid Surround
Mounting Depth: 44 mm (1-3/4'')

From the bay of the E.

stuartthegreat92 · 14 Dec 2023 at 20:05

azazl187 said:
These are the speakers and specs -

Volkswagen VW Transporter T5.1 JVC 6.3/4" Inch 17cm (600 Watt a Pair Total) 2 Way Front Door Car Speakers & Brackets/Connectors

Main Features:

600 watts peak power (pair)

300 watts peak power (each)

30 watts RMS output

2 Way

Frequency Response: 30 - 22,000Hz

Impendance: 4 Ohms

Sound Pressure Level: 92dB/W.m

17cm (6.3/4'') Mica Cone Woofer

25mm (1'') Poly-Ether Imide Balanced Tweeter

Ferrite Magnet (Woofer)

Neodymium Magnet (Tweeter)

Hybrid Surround

Mounting Depth: 44 mm (1-3/4'')

From the bay of the E.

This has happened to me and my 2014 Transporter Trendline. So weird how both speakers lost bass at the same time. I'm still in the process of troubleshooting and sorting out - suspecting it's the head unit too but after coming across this post might try a speaker replacement first!

Were these speakers a straight swap?

azazl187 · 14 Dec 2023 at 20:33

Not quite but they come with a bracket. It's very easy. Hardest part is taking the door card off