Slight misunderstanding there Eyedrop.
Yes, you can adjust the sound (Bass, Treble, Balance and Loundness) but that means the sound from your amp, the display on the Pentas just tells you what you are doing with your amp. There are no adjustments made in the speaker.
The settings made via the slider switches in the flap, are not shown on any display.

Andy T.

My RL140's are up and running. Reforming the speakers was really easy. Three didn't need any adjustment with the form and could be glued right on. The other took a minute!

Still breaking the woofers in, but comparison to the Pentas (RL's on additional B&O stands) the bass is weaker. The mid-range is better and top is more sparkly however they don't sound as good, or should that be "refined" as the Penta.

Together the performance is magical, the RL's complement the Pentas weaker mid-range, the Pentas complement the RL's weaker bass.

Total cost... approx £1,000 for everything. Pictures coming up...

A word of advise to people running Pentas with the line-in pre/out on a non B&O receiver: Make sure you check out your receiver manual for the pre-out voltage. On the penta, you have switch III =1v,  switch II= 1-1.4v,  switch I=1.4-onward. My Yamaha receiver has 1v pre-out, but I had the switch set to the III when I should have set it to II. 

Setting the switch correctly really cleared up the midrange and I hear less distortion. It seems like having the switch on the III position emphasized the upper midrange too much and added artifacts. On II, everything clears right up. These speakers sound fantastic. 

Regarding replacement mid-range's has anyone done it? I can't find any 3" mid's in the UK and postage would be expensive. I found these, not sure if they'd fit because of the large back (I haven't checked the mid-range cover for the Penta).

http://www.madisound.com/catalog/product_info.php?cPath=45_228_255&products_id=8459

If I were to get one I'd wire two in series, two in series and parallel them to give 8ohm nominal. Unsure if this is correct ...

A.

call Wilmslow Audio

http://tinyurl.com/kunaf7

they are really good suppliers for that sort of thing

Morel drivers are really good too

http://www.morelhifi.com/products/raw_drivers.html

specifically the model  MDM 55, I have a friend in New York who replaced all 8 of his Nokia midrange drivers with Morel MDM 55 drivers, you have to remove the square flange to fit them into the Penta holes left by the Nokia units though

he went mad and bought more Morel, woofers and tweeters  ( 18 new Morel drivers for his Penta's )

sounds absolutely fantastic though !

I've just done research to find out some stats on the mid-ranges, finally found out ITT was sold to Nokia after 15mins, then read your last post - doh!

The RL140 mid-range is Nokia as well - it seems B&O used the same supplier for high/mid/bass, so perhaps finding out the bass wouldn't be too hard.

I have decided to get 4x 8ohm speakers and do series/parallel - I'll then modify the mid-range portion of the crossover to eliminate the 2-way section on the mid-range - I don't see the point in that arrangement (very odd imho).

These are being raves about on diyaudio. They are very sensitive with a relatively flat response.

http://www.impactaudio.co.uk/product.asp?ref=921&session=a066a144c371c06b922752ca770e9472

I'm buying 8 of 'em and shall report back.

I have decided that the Rl140's do not sound as good as the Pentas even though the mid-range is better quality. They don't have the depth and the treble is overblown and inaccurate. Sonically the Pentas are significantly better. I'll be selling my converted Rl140's...

Can anyone explain the mid-range part of the crossover? It's very complex ...

In my judgement ??? :

L1, C1 does the basic filtering

R1 controls volume

L2, C2, gets rid of any minor left over signal

L3, C3, gets rid of any minor left over signal

C4, R2, L4, C5, matches impendence (zobel network)

Basically I'll be getting rid of the entire last part of the network for my new mid-range units. I'm wondering what else before the last part will colour the sound, that is, was stuck in to compensate for the original crap mid-range drivers.

Andrew

snoopy wrote:

These are being raves about on diyaudio. They are very sensitive with a relatively flat response.

http://www.impactaudio.co.uk/product.asp?ref=921&session=a066a144c371c06b922752ca770e9472

I'm buying 8 of 'em and shall report back.

I have decided that the Rl140's do not sound as good as the Pentas even though the mid-range is better quality. They don't have the depth and the treble is overblown and inaccurate. Sonically the Pentas are significantly better. I'll be selling my converted Rl140's...

 

It is bit of an unfair comparison as the Redlines were never meant to be on the same level as the Penta's (not in bass, power, size, drivers and price).

I have used visaton drivers before with excellent results and I can recommend them.