Richard Allan omni directional

[Biarritz]

Hi,

Excuse me for not posting in Danish. I'm not from Danmark, but The Netherlands. A few years ago I bought a pair of richard Allan Loudspeakers and was very surprised by their sound quality.

In The Netherlands there is not much information available about this brand, it is faily unknown. I noticed that Google search results are mainly concentrated in the UK, Australia, Japan, Norway and Danmark.

I hope somebody has recognized my speakers. They are closed speakers with a single CG8T driver.

Thanks,

Patrick

[Almarx]

They could be inspired by these: http://www.carlssonplanet.com/hogtalare ... sonab-v-1/

[Tonni]

Hi, and welcome Patrick!

Is there any markings, beside the Richard Allan badge, that can give any clues?
And what about measurements? Weight?

Best regards
Tonni

[Boptilyoudrop]

Hi Patrick

Very interesting speakers, congrats with the find. These full range units are great stuff, and a number of us guys here have had a pair at some time. They were a very good and affordable choice in the seventies, combined with a home build voigt enclosure. Actually such speakers are my main speakers right now. Are there any porting or is it a sealed system? Have you tried to point the units towards your listening position?

[Biarritz]

Hi All,

Thanks for your reactions. Great to hear you know them well.

I'm currently playing the speakers facing forwards place on speakerstands. In addition I have added Coral H60 tweeters and an active subwoofer.

I use a amplifier build from parts of and old Dual record player using one ECL86 tube per channel producing about 2 watts. In addition I have a KT88 Push-Pull amplifier set in triode producing about 23 Watts. Both can drive the Richard Allan's very well, but I profere the ECL86 amp.

The size of the enclosure is 40 x 30 X 30Cm (HxWxB) and it is a sealed system.
Besides the Richard Allan badge there is a badge on the bottom, so I guess it is a genuine Richard Allan speaker, but did not find any proof on the internet.

I recently bought another set of CG8T drivers and was thinking of building a set of Ace Horns for them but then have the units face forward.

I was wondering if any of you used some kind of filtering or impedance correction?
I use the equalizer from my Raspberry Pi running PiCorePlayer to have a more lineair response
and started doing measurements using Room Equalization Wizard. The tweeter is connected with a L-Pad and 2,2Uf capacitor.

Kind regards,

Patrick

[Biarritz]

Kære Bop,

I found your thread about your Ace Horn implementation with the Golden Eight. My complements. The British Racing green colour really suits your interior. Did you also apply the british flag on top of it and are you still using them?

I came across te Ace Horn design when searching for designs similar to the Dynavox UniQorn loudspeaker: http://www.audioasylum.com/forums/hug/m ... 28152.html
Actually somebody used this design with a Richard Allan driver: http://audiokarma.org/forums/index.php? ... 14.344017/
A russian guy also used a simular design for is Sonido SWR-250 driver: http://tubeaudio.ucoz.ru/index/konstruk ... wr250/0-42
When comparing the measurements of all these designs they are prety equal to the Ace Horn specs.

Back in 1993 an article was published about a speaker kit from Hifi World called the KLS-2 using a modified Richard Allan CG8 and Audax tweeter. I have a copy of this article.
The coincidence is that the volume of this bass reflex cabinet is almost the same as that of the Ace Horn.

My plan is to build some test cabinet like the Ace Horn, but have the two inner pannels removable.
In the bottom I will create also a removable panel with a bass reflex pipe.
This way I can test both Ace Horn and KLS-2 design.

De bedste ønsker,

Patrick

[Boptilyoudrop]

thanks for the nice words Patrick! Your project really looks interesting, I'm shure you are in for some great fun. I really hope you will document your progress and your impression of the speakers capabilities.

I know that Tonni have a pair of the larger super ACE with front mounted Lowter units, this version of the ACE horn have an extended bass capability. Gottschalck uses a Gulvhorn (floor horn) with Golden Eights. This is a folded voigt pipe made by a Danish hifi magazine in the seventies. In my opinion a very capable combination. A lot of Danish enthusiasts have had theses systems often combined with British, Japanese or Scandinavian full range units. Diy speakers was quite a big thing here in the seventies, I wonder if you have this trend to?

[Ehapa]

[Elway]

Hi, funny this tread came up .Great work...i am aboat to renovate my old original RA cabinets, they were filled up with flamingo!, the bas po....

For the non-Danish people, "flamingo" is polystyrene (insulation board). In Denmark it is known as "flamingo", because that was the name of the company that started selling polystyrene on the Danish market. There were no big pink birds in Ehapas speaker enclosures

[his067]

Glasuld (glass wool: another insulation material) is sold as 'fiberglass pink' in Canada.....[youtube]https://youtu.be/TIXeTbZWG-4[/youtube]

[Boptilyoudrop]

alcomax lækre!

[Gottschalck]

Hi there!
Found this in a Danish magazine from 1969. RA had lot of ideas.
Jesper