B&O Penta owners will want to bookmark this!

116 replies
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Do we have an update for the 140's? I've just bought two in really nice condition and so will be doing the conversion as well. My only issue is the original supplier of the IcePower's hasn't returned my emails for another two boards so I'm out of suppliers.

Andrew

Hello Andrew,

My son allowed me to finish my RL 7000's this weekend 🙂.

So, now I have 2 RL 7000's with repaired foam, new capacitors and 2xIcepower.  

The speakers are nice and precise.  I have the impression the RL7000's are a good match for the ice200ASC.

I also discovered the cause of the hum.  It was the groundconnection.  With a connection to Powerlink, a connection to the ground of the powerlink causes a hum.  So I removed the groundconnection and the hum disappeared...

There is a webshop in Danemark which sells Ice250A and the powersupplies: link.  But I believe the ICEpower modules aren't the only/best solution.  The site also offers other class D amplifier modules.  Also the

Hello Andrew,

My son allowed me to finish my RL 7000's this weekend 🙂.

So, now I have 2 RL 7000's with repaired foam, new capacitors and 2xIcepower.  

The speakers are nice and precise.  I have the impression the RL7000's are a good match for the ice200ASC.

I also discovered the cause of the hum.  It was the groundconnection.  With a connection to Powerlink, a connection to the ground of the powerlink causes a hum.  So I removed the groundconnection and the hum disappeared...

There is a webshop in Danemark which sells Ice250A and the powersupplies: link.  But I believe the ICEpower modules aren't the only/best solution.  The site also offers other class D amplifier modules.  Also the

The seller got in contact just yesterday - two left - and now bought by me.  :)

There is another seller on ebay but he's shifting the old ones. He does have a pair of the new model 200ASC but he doesn't want to sell them unless you pay a lot more. He also wants more than the seller we used for just the old ones.

There is also a guy on diyaudio (search "200ASC" long thread towards end). He'll take about the same amount but he hasn't confirmed if they are old or new version (new version has two tranducers of the same size and has the layout on icepower website).

My 140's are in exceptional condition apart from one missing strap but they look better without any straps IMHO. I paid just £120 with the floor stands!

Pentas still rock. I drilled a small breather hole in the bottom and the amps no longer overheat at full power. The bottom is actually air-tight without a hole to allow for effective passive cooling. The sound is still to die for. I'd love to have them against a pair of Beolab 9 and 5's for a comparison....

I wouldn't use any amps but icepower as they are the best on the market hands down. The hypex are cheap and unrefined. The 200 have all the automatic shutdown and power onboard. The 250's dont have LED, auto standby etc. I heard they have a bit more kick but don't sound as nice as the 500's. The 250's could also damage the mid-range on the Pentas as can kick over 150W short-term (close to 200W @ 8ohm) and they'd certainly blow something on the 140's as the overheat circuit on the speakers wouldn't catch this sort of short term abuse.

I'll get some pictures up of my 140 conversion next week. Where did you get the little white stands for the 200ASC board from btw?

Andrew

 

 

 

 

 

Conrad sells the white supports.  Item nr 542270 - 89.  

They are from PB Fastener.

Do you have the pin diagram again? Specifically I need the 8 pin socket. I've no idea where I got it from before - it's not in the dev manual I sent you. Hmmm.

Also, had my RL140's apart today (well one of the two) and both speakers have a little form rot :(. Who did you use to get them done? My dad has repaired them in the past so I'm thinking of just buying the surrounds and getting him to do them.

For the record, the RL140 has a Seas tweeter and a Nokia mid-range (just like the Penta). I can't find the Bass unit anywhere - it has markings 8480186 K03TNI on the rear.

 

 

Oh found it.

I've only got one up and running and the sound with the Pentas is STUNNING. I mean _STUNNING_ :) :) :)

 

Hi,

I guess you mean 'the sound with the RL's' is stunning. :-)

I also repaired the foamsurrounds myself.  I ordered them at Good Hifi.  They have surrounds for the RL140, but these didn't fit with my woofers, so doublecheck the size with them.
The woofers of the RL140/7000 are known for being difficult to center.  It took me 1/2 hour each and lots of patience but it's fdoable.

I guess almost all RL 140/7000 suffer of foamrot.  I looked for replacement woofers, but there aren't any that fit the specs and if they come close, they cost 60EUR each :-(

Good luck

What form size rings did you end up buying? The RL400 is exactly the same as the RL7000 in your photograph and the drivers look like a direct match. I'm wondering what went wrong with your measurements - i emailed the guy and he doesn't know anything about the suggested ones not fitting.

Regarding sound, I was refering to the pentas with one RL active (the other still to do).

Andrew

 

Ive got a question: My displays dont work on my penta because Im using the Line-in with an old Yamaha. I noticed in the manual you can adjust the settings of the penta with the display, such as balance, bass, treble. With my setup (no display), is everything set at factory default or is it the last known setting? Is there a way I can reset the settings without the display?

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