quote:

Originally posted by Bill-at-Bose:
...Max Headroom (anyone remember that character? - I'm dating myself)....

Played by Matt Frewer, another one of your Canadian actors, eh!

jgnelson,

I am not sure, but I think to understand this new concept, one has to separate "more bass" into at least two, maybe more catagories.

More Bass, as in turning up the Bass or LOW control is not necessarily what Bose is doing with this new addition, although there is room for that if that is what you want.

More bass, as in adding B1's with the PackLite offers potential for more output but only if the source provides a stronger signal or a signal with more bass content.

More Bass, as in turning up the volume, and all frequencies are boosted, maintaining the same spectral balance, without breakup at higher overall SPL with the PackLite system than the PAS double B1 is capable of.

Somebody please correct me if I am wrong or misleading.

If I understand correctly, if your chosen instrument sounds best to you with the LOW EQ control set on 8, It won't matter whether you have 1 B1 or 4 B1's, the tone will be the same. If spectral balance is not changed by adding more B1's, the results of turning the LOW tone control should not vary with the number of B1's.

I may need something stronger than aspirin.

Oldghm

This message has been edited. Last edited by: Oldghm,

Oldghm, If you are playing with a single b1 with the low freq. boosted to 8, the overall spl will not be able to get very high because that single b1 will quickly max out the 125 watts available to it.

Add the packlte and the other 3 b1's and then the maximim spl available should be much higher.

It may not change much if you just added the a1 and b1's and left the overall volume the same.

If you played pre recorded dance music as loud as a double b1 pas could play, and added the paklite-2b1 package, I presume you would hear a definitive addition of low frequency output.

Hi Oldghm,

Sounds like you are getting your head around this.

"If I understand correctly, if your chosen instrument sounds best to you with the LOW EQ control set on 8, It won't matter whether you have 1 B1 or 4 B1's, the tone will be the same. If spectral balance is not changed by adding more B1's, the results of turning the LOW tone control should not vary with the number of B1's."

I think you are really close here.

If you are happy with the Bose System with whatever number of B1s you are using - then you may not need a PackLite ™ extended Bass package.

If you are looking for more low end - then it's worth checking out.

I so wanted to get into this whole analogy about adding wheels to a golf cart - but Steve-at-Bose beat me to it with pints of beer.

quote:

Originally posted by ST:

I so wanted to get into this whole analogy about adding wheels to a golf cart - but Steve-at-Bose beat me to it with pints of beer.

I got into golf for the exercise, so unless I am playing in some kind of organized event, I almost always walk, I may not relate to how many wheels on a golf cart; but I do know that adding more clubs to the bag doesn't make my score any lower and I'm packing the weight for nothing! There might be an analogy in there somewhere.

And I thought that was pints of bass he was talking about, you must be thirsty.

Yes, I think I am getting it now, and I think I understand why there was no other way Bose could have designed the system without risking the plug and play features that makes the PAS so appealing and delightful to use. There is a part of me though that wishes for a switch to turn off the circuitry that counts B1's and attenuates accordingly.

Oldghm

quote:

Originally posted by Oldghm:
And I thought that was pints of bass he was talking about, you must be thirsty.

Pints of Bass Ale, I suppose...

quote:

Oldghm said:
but I do know that adding more clubs to the bag doesn't make my score any lower and I'm packing the weight for nothing! There might be an analogy in there somewhere.

LOL

Alan,

Bass Ale ... that was very clever.

Steve

Did you guys ever consider going active with the B1?

Perhaps with the L2/B2... seems to me that that approach would be inherently more flexible/expandable, also allowing servo feedback (if desirable).

hi all

one thing i didn't understand. in bose catalog it sais that each B1 has 250W rms at 8ohm, it means that if you have 2 B1s we will have 500W at 4ohms. right?

each A1 at the same catalog gives 250w at 4ohm.

my question... why bose says that each A1 can drive 2 B1s (500W at 4 ohms) if it has only 250W at 4ohms? is just to drive a half of b1 power to protect them? i guess not...

i dont understand this...: anyone can help me with this?



thanks

Hi Alvarinhas,

I'm not sure where you are seeing 250W rms at 8 ohms. If you can send me a link to where it says that, I'll forward that to Bose to have that corrected.


Here is a clipping from the Owners Manual with the correct information.

http://products.bose.com/pdf/c...rs/og_packlitea1.pdf

I've had L1 & 2-B1 for several years now, play keys, & often have to supply bass lines. In a smaller area, the 2-B1 setup suffices in a pinch (but not really)

I can't wait till I have $1000...I am ready to invest in the Bose solution for my bass response needs. I've considered and tried various solutions, but prefer the plug-n-play fidelity of the Bose approach.

Hi

I wrote that each B1 bass bin has 250w at 4 ohm.

so the A1 packlite (250W at 4omhs) can not push 2 bass bins B1 (500W at 4ohms) because he only delivers 250W at 4ohms. why bose has done this?

quote:

Originally posted by ST:
Hi Alvarinhas,

I'm not sure where you are seeing 250W rms at 8 ohms. If you can send me a link to where it says that, I'll forward that to Bose to have that corrected.


Here is a clipping from the Owners Manual with the correct information.

http://products.bose.com/pdf/c...rs/og_packlitea1.pdf

Hi Alvarinhas,

Each B1 alone presents an 8 ohm load.

The Packlite® is designed to drive up to two B1s in parallel. That is: 250 watts into a 4 ohm load.

exactly ST. i saw this at

http://www.tabelas.abc.pt/4bosemusic.pdf

Bose® Personalized Amplification System –

BOSE® PERSONAL AMPLIFICATION SYSTEM – B1 BASS MODULE

Dimensões (LxPxA): 25cm x 45.7cm x 38cm
Potência: 250W r.m.s.
Impedância: 8 Ohm
Peso: 13 Kg
Saco de Transporte: Incluído
Código EAN: 17817332675

so...

1 B1 bass bin - 250w at 8ohms
2 B1 bass bin - 500W at 4 ohms
A1 amplifier - 250w at 4ohms

so Bose has made a amplifier that uses only half of the power of the speakers
???

quote:

Originally posted by ST:
Hi Alvarinhas,

Each B1 alone presents an 8 ohm load.

The Packlite® is designed to drive up to two B1s in parallel. That is: 250 watts into a 4 ohm load.

Hi Alvarinhas,

Thanks for the link to the document.

I cannot find anything similar in the English documentation and while I don't see anything that looks like a problem here, let me see if I can get some help from someone at Bose.

Hi Alvarinhas,

This is my interpretation of the chart you linked to. I do not intend to be speaking for Bose and hope to be corrected if wrong.

The Speaker (B1) has no power.

The chart indicates the "potential" or power "handling" capability of 250 watts. It (the B1) is designed to work efficiently at 125 watts, but it will handle up to 250 watts of power.

It is not uncommon to see speakers that are rated at twice the power handling at peak as they are for continous use.

So .... Bose has made a speaker that is capable of handling twice the power (in peaks) that it takes to make it work as intended.

Does this help?

O..

thanks oldghm

in the portuguese catalog it says 250W rms, and the rms value is not the continuos or peak (peak values is the rms value multliplied by 1,4). in the same catalog we can see that the mkII system has 750W rms (250W tower + 500w to 2 B1) wich gives 250W rms per each B1 at 4ohms.

"So .... Bose has made a speaker that is capable of handling twice the power (in peaks) that it takes to make it work as intended." So why Bose can handle twice of power in B1's with powerstand and not in A1 packlite, in wich uses half of the power? it does not make any sense

the A1 packlite should give minimum 500W at 4 ohms or 250rms at 8ohms to take the maximum capabilities of the B1 bass bins

quote:

Originally posted by Oldghm:
Hi Alvarinhas,

This is my interpretation of the chart you linked to. I do not intend to be speaking for Bose and hope to be corrected if wrong.

The Speaker (B1) has no power.

The chart indicates the "potential" or power "handling" capability of 250 watts. It (the B1) is designed to work efficiently at 125 watts, but it will handle up to 250 watts of power.

It is not uncommon to see speakers that are rated at twice the power handling at peak as they are for continous use.

So .... Bose has made a speaker that is capable of handling twice the power (in peaks) that it takes to make it work as intended.

Does this help?

O..

Hi Alvarinhas,

OK, on further review it would appear that there are several misleading bits of info in the catalog.

I was assuming that the US version is the same internally, except for the power supply, as the units sold elsewhere in the world.

A comparison of the charts you linked to, to the US version shows inconsistancies that I won't try to explain away.

US Model I

http://pro.bose.com/pdf/pro/tech_data/L1/td_l1_m1.pdf

US model II

http://pro.bose.com/pdf/pro/tech_data/L1/td_l1_m2.pdf

I guess well have to wait for someone at Bose to clear this up.

O..

Quite frankly, to me it looks like a copywriter mistake.

The amp built-in to the L1 columns which drives the B1(s) is virtually identical to the amp in the separate A1. Both are a 250W-into-4ohms amplifier. (As ST noted above, one B1 gives 125W rms "acoustic output"; two B1's give twice that.)

It may be the confusion of the copywriter ... that the "rating" for the L1 columns was assumed to be that for the amp, when it should have been for the "acoustic power" with number of B1's specified in each description.

That misunderstanding was then probably just "copied over" into the description of the stand-alone B1 itself.

That's also why Bose tends to avoid relying on 'specs'!

thank you for your responses.

i guess i'll return the 2 systems, because it doens't match with the specs of the catalog. i'm not going to pay for one copywriter error in the portuguese catalog. i thougth that i had 2000W in bass and i find that i only have 1000W (8 B1 bass bins)