You are here

Bose S-1 battery issues

For performing musicians and engineers: stagecraft, engineering and gear.

Re: Bose S-1 battery issues

Postby Sam Spoons » Sat Nov 02, 2019 10:06 am

Rob Kirkwood wrote:just trying to make sense of the behaviour of different S1's!
Rob

Yeah, me too :headbang:

Several users have demonstrated that the batteries are not the problem as they don't lose charge if removed from the S1 Pro . There is something going on in the S1 Pro that draws an excessive amount of current when the device is switched off. Li-Ion batteries have a self discharge of less that 3% a month even when taking into account the charge/discharge monitoring circuitry so that doesn't account for it. Bose even acknowledge that there is a problem with some S1 Pros and recommend removing the battery as a temporary fix.
User avatar
Sam Spoons
Jedi Poster
Posts: 10399
Joined: Thu Jan 23, 2003 1:00 am
Location: Manchester UK
Finally taking this recording lark seriously (and recording my Gypsy Jazz CD)........

Re: Bose S-1 battery issues

Postby Sam Spoons » Mon Nov 04, 2019 8:33 pm

Well, back to square one, Reading 90% now :headbang: Better than the last one but still on schedule to lose 20% in a month so it does have the problem. I can probably live without it for a few more days so will check again towards next weekend. It's annoying that the app only resolves the charge remaining to 10% increments. :madas:
User avatar
Sam Spoons
Jedi Poster
Posts: 10399
Joined: Thu Jan 23, 2003 1:00 am
Location: Manchester UK
Finally taking this recording lark seriously (and recording my Gypsy Jazz CD)........

Re: Bose S-1 battery issues

Postby James Perrett » Mon Nov 04, 2019 9:08 pm

So now the question is whether the app is rounding up, rounding down or a bit of both? Could it go to 90% if the voltage drops ever so slightly below full charge? Can you measure the actual battery voltage?
User avatar
James Perrett
Moderator
Posts: 8536
Joined: Mon Sep 10, 2001 12:00 am
Location: The wilds of Hampshire
JRP Music - Audio Mastering and Restoration. JRP Music Facebook Page

Re: Bose S-1 battery issues

Postby Sam Spoons » Tue Nov 05, 2019 11:19 am

That was my thought, I plan to try to get an idea by letting it fall to 80% (expecting that to take another 10 days or so, will next check it next Tuesday if I can resist the temptation to use it, It might be my backup plan for a small outdoor Remembrance day service I'm supplying a PA for).

Once it's down to 80% I'll see if I can measure the batter voltage, and try to jury rig an ammeter into the circuit. It all has to be done fully reversibly with minimum risk of damage so it may not be simple to do.

It's been over a year since the first post about the issue on the Bose forum. I'm beginning to think Bose are just ignoring it in the hope it will go away.

Has anybody got any suggestions for a similar box from another manufacturer, there are loads out there but they all seem to be either mini line arrays (inconvenient), super expensive* or really cheap (in one or the other sense of the word).

* https://www.thomann.de/gb/sennheiser_lsp_500_pro.htm
User avatar
Sam Spoons
Jedi Poster
Posts: 10399
Joined: Thu Jan 23, 2003 1:00 am
Location: Manchester UK
Finally taking this recording lark seriously (and recording my Gypsy Jazz CD)........

Re: Bose S-1 battery issues

Postby Sam Spoons » Tue Nov 19, 2019 6:36 pm

This looks interesting Image

£549 so £70 more than the Bose just now and, seemingly, not yet avalable but has a BT mixer app, four inputs and goes a decent bit louder, only weight 1kg more too. Not sure if it will sound as good though.


https://www.pmtonline.co.uk/jbl-professional-eon-one-compact-pa-speaker#product-details

If Bose don't sort out the battery issue the JBL might be a decent alternative.
-
User avatar
Sam Spoons
Jedi Poster
Posts: 10399
Joined: Thu Jan 23, 2003 1:00 am
Location: Manchester UK
Finally taking this recording lark seriously (and recording my Gypsy Jazz CD)........

Previous

Who is online

Users browsing this forum: No registered users