Hi folks ! I'm experiencing some issues with the low frequencies with my L1... in the middle of a performance, I notice the bass frequencies drop off intermittently for a minute or two, then return to normal... it happens pretty much every gig (I gig about 10 times a month)... it's the strangest thing... has this happened to anyone else ? I haven't replaced the B1 speakon cable yet, to test that... but, could this be an issue with the T1 or the L1 itself ? just looking for any input from others who may have had this happen to them... thanks ! Kevin
Original Post
Hi Kevin,

Good to see you again.

Is there a pause in the sound (very brief silence and then it resumes almost instantly) before the sound changes? If so, then I would definitely check the B1 cable.

See: Check the B1 Cable


Are you using the stock blue B1 cable that came with the B1?


edit: typing
Thanks guys ! ST, there is no pause/silence before I notice the sound degradation... I know what you mean, though... I've unplugged the B1 Cable while the L1 is powered up, and I notice how it does that... I'm going to have a look at the wires in the cable ends, and I'll let you know if they look ok or not... thanks !
Hi...

The low frequency level (volume) is still cutting in and out randomly using my L1M2... I just upgraded the firmware in both powerstand and T1... I checked the B1 cable, and no issues... it's really wierd... I turned on my system last night... and the bass/low end volume was lower than normal for about a minute... I could tell it was doing it again Frown I have my acoustic guitar only, plugged into the L1... I palm-muted the lower E,A,D strings of my guitar, and started hitting the strings hard... then, the bass/low end volume increased back to it's normal level... I can't figure it out ! does this sound like a defective B1 bass module ? the only thing I haven't tried yet - aside from having the entire L1 T1 returned for repair... any help is appreciated... Kevin
Hi Kevin,


quote:
Originally posted by swhoelefp69:
Hi...

The low frequency level (volume) is still cutting in and out randomly using my L1M2... I just upgraded the firmware in both powerstand and T1... I checked the B1 cable, and no issues... it's really wierd...

The way that you described the degradation ("no pause/silence"), this does NOT sound like an issue with the B1 cable.
quote:


I turned on my system last night... and the bass/low end volume was lower than normal for about a minute... I could tell it was doing it again Frown I have my acoustic guitar only, plugged into the L1... I palm-muted the lower E,A,D strings of my guitar, and started hitting the strings hard... then, the bass/low end volume increased back to it's normal level... I can't figure it out ! does this sound like a defective B1 bass module ? the only thing I haven't tried yet - aside from having the entire L1 T1 returned for repair... any help is appreciated... Kevin


This doesn't sound like anyting I've experienced or heard about with a Model II. I think it's time to call L1® Support. Sorry I can't do more.

Call Bose® Product & Technical Support at (877) 335-2673 (U.S. and Canada only)
Monday-Friday: 8:30 AM - 9:00 PM ET
Saturday 9:00 AM - 5:00 PM ET
Currently no support available on Sunday
I am experiencing that exact fault.

I have changed the b1 cable and change the rj45 lead from the t1 to the l1 stand.

It is very annoying and I have to try and boost the bass levels to continue to gig, but all the dynamic seems to disappear from the signal.

I have deduced that if the tonematch rj45 lead is unplugged then plugged back in the signal returns immediately.

Now I don't know if that's because the T1 has been rebooted or if the break in signal to the base of the tower affects the amp crossover ??.

I am going to use a different T1 at my next gig to eliminate that from the potential fault list. I have a spare from the last time my T1 had an intermittent fault on channel 3! But that's another story..

I must stress that the bass bin does still work, but at what seems a really limited capacity.

When the fault occurs I have tried running an iPod through to the system. It results in very low bass responses too.

Normally I would have to lower the bass output from iPod music as I play in bistro and restaurant environments. But when the fault occurs you could increase the bass gain by 8db easily and not have too much bass!! normally that would shake the windows out of the place.

The fault affects all channels, so it's either output from the T1 or crossover in the amp??. Sigh !!

Looks like I will be purchasing a Yamaha powered monitor as a backup soon....

Love to know the outcome on your fault ..

I will post my results...
quote:
Acoustic Doddsy

wow - finally ! someone that has the same problem (although, I'm sorry that you're having this headache, too!)...

It's a complicated problem to isolate... I've found no change, removing and reinserting the RJ45 cable, though... it just 'returns' to normal, when the system wants to... and that's annoying to the highest degree... like you said - pump up the bass... but, then it kicks in again, and the bass makes beer bottles vibrate off a table Wink I've been dealing with this for over a year, and not sure how to resolve... tried B1 cable, T1 replacement... only thing I haven't tried is B1 itself... but, I can't see that being the problem...
Hello Again Kevin

I have had chance to diag this quite a bit as I have almost 2 of everything.

It is not the B1 ( have tried 2 )
It is not the B1 lead ( have tried 2 and examined them)
It is not in the Tonematch I have 2 an the fault develops on both.

It is either the connection ( rj45 network style lead) or the Power amp stand.

I did purchase some electrical contact cleaner spray and hit the connections with that 2 weeks ago, gave them a few click in and outs.
I have been free of dropouts since, BUT, it's not the first tine I'v gone a while without one.

These type of connections were never designed to be clicked in and out daily. As a network engineer in my previous life these leads are usually connected then forgotten about for years on end. Could the connection pins be slightly coated or oxidised ? Its possible.


The next test is to run the T1 with only a mono audio lead into the power stand. This will eliminate the RJ45 connection as a fault location.

I am hoping that the contact spray has done the trick though. So far so good.
Got a big gig tomorrow night, so really need the BOSE to perform.

Now my L1 is working correctly , I am starting to realise how often it was actually malfunctioning.

It also coincided with my live CD sales... When the B1 malfunctions you are left with a muddier sound i think.


Good luck with yours, try a couple of my solution..
Heh ! thanks for your reply, and advice... I really appreciate it Wink I'm going to try the contact cleaner - it makes sense...

Should I spray the cleaner on all contacts ? obviously, the RJ45 cable ends, but also, spray some in the inputs on the T1 and L1 stand ? My guess is yes...

Going to Radio Shack and picking some up today... will let you know how it goes...
I started out just spraying the RJ45 connectors, paying particular attention to the one in the power stand ( thats my bet for the dodgy connection ) I have now given the b1 lead connector a spray too as it can't hurt.

Good luck, hope it fixes the issue.

BTW , there is another guy on here that has has a similar issue and his problem was the connector in the power stand, his fix was to tape the connection so it was pulling the lead hard against the pins.
But I'm guessing the result is the same, a good connection without tape will suit me best..

Fingers crossed for me too...
I didn't get to spraying the RJ45 connectors, BUT, I did try the 1/4 cable connection with T1 power supply... still, that drop in bass volume... I gig'd last night for 4 hrs... it was fine for the first 30 min, then for the next 3.5hrs, the bass dropped, raised up again, dropped, intermittently... I tried EVERYTHING to figure it out... I haven't swapped out the T1 yet... but, somehow, this is all pointing to the L1 powerstand... thoughts ? so, frustrating...
I am having the same problem. The bass drops out suddenly and completely at random times. It is unbelievably annoying. Mostly my system stays plugged up; I wouldn't think the problem would be wear and tear from plugging/unplugging the cables.However it certainly seems to be a connection issue; there seems to be a short somewhere in the system that causes the base module to function intermittently. If anyone has any more advice I'm definitely listening & trying to avoid having to send it to the factory for repairs...AGAIN. This is the second time I've had major problems with my system since I've had it. The first time, everything completely stopped working.
Sorry to her you have the same issue.

My cut outs have reappeared also.

A restart or unplug the tone match fixes it for a while.

I hope someone on hear can shed light on the issue.

This is my 2nd major issue since owning the system.
Last time the dreaded channel 3 noise.

That took weeks to resolve .

I don't really want to send my unit in for " investigation" as "no loner" units
Sure available.

It is a massive downfall of the system, the support.

Keep me posted
Hi Grimbone,

I couldn't tell from your message... have you checked the B1 cable? See: Check the B1 Cable


If you have and you are sure that they are sound then it's time to call L1® Support.

Call Bose® Product & Technical Support at (877) 335-2673 (U.S. and Canada only)
Monday-Friday: 8:30 AM - 9:00 PM ET
Saturday 9:00 AM - 5:00 PM ET
Currently no support available on Sunday
Hi

No I am in Australia, Melbourne to be precise.

I have checked the b1 cable, I have 2.
I also have 2 b1 bins. It does it with either .
I also have 2 tone matches ( due to the fault repair time from last issue)

The problem seems to occur with either t1, but I think more often with 1 of them.

A reboot brings back the bass sounds . Btw it is a subtle loss of bass no a cut out completely.

The kind that makes you question your ears, or keep adjusting the eq .

I'd love to know how the other guys got on getting their l1 units fixed.

That might speed up the repair process .
My guitar player also has a Bose system that stays at my house, so I'm able to troubleshoot using components from that one. It seems to be yet another problem with the L1 base. I assume I will have to ship it back to Bose AGAIN at considerable expense, keep my fingers crossed & hope it lasts a little longer this time. Ugh, frustrating.
Hi Grimbone

" I will have to ship it back to Bose AGAIN at considerable expense,"

I understand your frustration and I encourage you to share your concern with the Bose representative when you contact support.

edit: spelling
Any updates ? My cut-outs have increased in frequency of late.

Making a repair somewhat imminent, as I work every week with the Bose it is going to mean hire or an additional speaker setup.

It would be good to at least be able to point the repair guys to the fault everyone else is having.

I love the L1 systems sound, but I have to say it has been the MOST unreliable PA I have ever owned. With repairs difficult to access.

I have now had the L1 tower stand replaced, ( after 1 week) My tonematch faulty and replaced with the dreaded channel 3 noise.
Had to buy a spare whilst mine was in BOSE for close to 3 weeks. Not Cheap.

Now it looks like my tower stand will have to have some chargeable repairs for another issue. With loss of PA in the interim.

Frustration...Yamaha I may well be returning to the fold. 5 years with no faults..
quote:
I love the L1 systems sound, but I have to say it has been the MOST unreliable PA I have ever owned. With repairs difficult to access.


Hello

I had my Model2 powerbase fail me after 1 month of use. It wold not switch on and I had to ship it back. When it got back it was noted that there was nothing wrong with it. 3 days later it happened again. I sent it back and Bose Shipped me a new one. So far so good. I also had my compact lose it's base and only gave me highs. I shipped it back at a cost to me of course and it got repaired. To be honest I love both my Bose systems and just bought another compact as a back up in case my first compact or my Model2 go down. I am pushing 70 years of age and love the easy in's and out's with all my Bose Systems but I must admit I have "never" had a PA system including mixer "fail" me over the years until I bought my Bose Systems. I think that while they sound awesome and I will keep them. that they just are not "rugger-ed enough for the road even when handled with care. The good thing is that Bose backs their product and does everything it can to make it "right" if something goes wrong. I just wish I could lose that "cross my fingers" feeling every time I "switch it on".

Just my two cents.

ps....Now that I have written this what all 3 of my systems be "mad" and me and refuse to fire up! LOL!!!!!!!!!

Aj.
Class Entertainment

music is neither new or old.........it just "is"
quote:
I must admit I have "never" had a PA system including mixer "fail" me over the years until I bought my Bose Systems.

Hi Doddsy & AJ,

It seems that online forums, and places where PA users "complained" did not exist in the days before we had our Bose L1s.
So it makes sense that we didn't hear about problems with traditional PA, and might guess that they did not exist.
But they did.

I have blown speakers, amps, and have had mixers lose channels or outputs at gigs.
Generally, back then, you could double up on the monitor amp, lose a speaker, or get by with less mic channels.
I've also broken drum heads, hi-hat stands, and kick pedal mechanisms...that was no fun.

True that when an L1, being totally integrated, goes down, it's a more serious problem.
Fortunately, the Compact offers us a low cost "backup unit".

Still, all in all, my L1s have been very reliable.
My first Model II arrived with a DOA bass amp, and was corrected almost overnight.
I've also blown a few B1s, but always had multiple systems to pull one from while getting the bad one repaired.

In the end, I've enjoyed the trade-off that I made for a light weight, excellent sounding, and totally revolutionary sound system.
quote:
I have blown speakers, amps, and have had mixers lose channels or outputs at gigs.
Generally, back then, you could double up on the monitor amp, lose a speaker, or get by with less mic channels.
I've also broken drum heads, hi-hat stands, and kick pedal mechanisms...that was no fun.



Hi Drumr

I was a professional percussinist for years and also broke a few pedals and High hat stands. ( Heck I remember "straps". I go back a long time. This is normal wear and tear and is expected. This is not expected from relatively "new" PA's. I do agree that we all have had equipment blow over the years but usually it's after "years". OH well.....I still love my Bose Systems and having a second Compact in the car when using one compact or one Model2 as backup sure is calming on the nerves. I also have a back up Tonematch. ( ya never know )

Love my Bose......"just sayin"

Aj
Well, after another night of intermittent sound drop outs, I am searching for a backup solution or replacement PA.

I have come across the HK Nano 300, which looks great for the price $600 . Certainly worth a look i'd suggest . HK with a 5 Year Warranty as standard.. Are you listening BOSE ??

THe HK caddy might be my replacement for my L1, going to sound test them next week.

For me in Australia it is also nice that HK have not ramped up the price from the US price by 50% either.

The reviews are great lets hope it pans out.

Interested to know what others think of this system
For all those still experiencing the problems,
I have been looking at backup solutions.
The HK nano 300 looks great, similar to compact system
But only $600 and has 5 YEAR WARRANTY ! As standard.

Going to test drive one next week, if anyone has experience of these units
I'd be interested to hear your point of view.
While I'm there I might try the HK caddy. With a view to replacing the l1 system completely.

Who knows, my BOSE sounds great ( when it works) but the competition is catching up fast.

Keep you posted
I got my L1 back from support last month... I've gigged with it twice since, and my bass 'cutting out' problem is gone... I have no idea what the service dept. did to correct... the statement of work just says 'tested input/output connections and replaced as needed'... software checked and upgraded... 'reviewed PCB for solder and component integrity'... no cause for my problems identified... but, it works perfectly now... cost $328.90 Canadian... have a 1 year warranty now, which is nice... I gig very often, so I can't say that I'm upset it started to give me problems... but, I'm a happy camper now... I hope you guys get resolution to your troubles too... the bass cutting in/out was very annoying... I agree...
Well, the L1 model 2 is in for repair, gone again for 2 weeks ! Bonus. In a city of 4.2 million people, we have 1 bose repair centre?

The base stand is just out of warranty so, I'll keep all posted on repair cost.

Forced to purchase a backup PA as I gig every week, I have gone for a HK nano, 1st gig it performed flawlessly with a clarity on a par if not better than my BOSE system.

Depending on repair cost, I may well get 2 HK systems and sell the BOSE, the HK has the built in option to link 2 systems. (plus 5 year warranty worldwide )

I will be keeping the Tonematch,which is still unrivalled in my opinion for versatility.

have to admit, I'm left a bit sad with my BOSE experiences. Such a great system, BOSE Australia has some way to go in customer service. Especially as they charge around 50% markup over USA prices.

BOSE compact USA = $899
BOSE compact AUS = 1495

Hi swhoelefp69,

swhoelefp69 posted:

well, after a 5 year hiatus, the bass frequency drop issue is back, and worse than ever...

Please call Bose Support. Be sure to tell them you history with the problem. 

Bose® Product & Technical Support at (877) 335-2673
(U.S. and Canada only)
Monday-Friday: 9:00 AM - 9:00 PM ET

Thanks,

ST

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