Scan-Speak Reference Monitor

[gchrist]

Dear Duck,

I cannot understand the "straw" thing. Can anyone explain?

Thanks
George

 

[Leeuwarden]

I just had a look at the drawings. The straws are put in the (bass-reflex) port.

What are straws? Straws are used to drink your lemonade right out of the bottle... (Drinking) Straws... Amazing...

I have two kids so I know drinking-straws are sold in at least 2 sizes (diameter that is).

It's nice weather today... I think I'll go outside and drink another bottle of Coke with a ....

Jan

 

[Duck-Twacy]

The purpose is probabely to decrease turbulance, port noise or something like that. I've seen it also elsewhere.

 

[CptTripps]

Didn't the original ProAc Response 2 have a honeycomb type thing in the port?

So do we use McDonalds straws, or maybe a Taco Bell straw?

 

[SteveA]

Straws

Northcreek uses straws to fill the ports in the Borealis and Rhythm speakers

 

[jleaman]

i have heard a pair of speakers with straws. You dont hear any port noise at all. : O )

 

[grataku]

In the case of Northcreek the straws are used to tune the port (ie low frequency extension by about 5 Hz) to aid the placement in the room.

 

[gchrist]

Hi,

Does anyone know what the impedance of this speaker is (the ScanSpeak Ref.Monitir)? How low does it get?

George

 

[colwaiting]

impedance of ref. monitor

I have a graph with a minimum at 180hz of some 6.5 ohms. It's an eight ohm speaker.

 

[gchrist]

Colwaiting_ Thank for your reply. I presume this is an easy driven loudspeaker. With all the Gaincloning going on I will try a pair of gainclones in the near future. If you can zip any measurments you have on this speaker and post them.

Thank you
George

 

[colwaiting]

Tech notes

Alas, a published reference. The scanner will work someday, http://www.diyaudio.com/forums/images/icons/icon9.gif
Unhappy

I have built the CABS out of 1" MDF, with a 1.25" baffle. These are heavy, and secure, really a nice size.

 

[gchrist]

I'm BACK!!!

Hi to everyone,


As promised I am back after my wedding. I have started building my cabinets. I am using two panels of 19mm MDF glued together for each cabinet side. I have already made the circular openings for the units with my router. At the moment I am gathering the sound damping material. As soon as possible I will post some pictures.

George

 

[amo]

Hi-

I am interested in building the Reference Plus, but I am not fond of the idea of using a ported enclosure. I have a feeling that I can not simply modify the design and not use a port, but keep the box sealed. Maybe I can simply modify the internal volume.... What do you guys think?

 

[Taco]

The ported design is very good, simply changing the cabinet isn't a good idea.

 

[amo]

Can some one please enlighten me as to why the Reference Plus system uses two different mid-bass drivers, and what exactly is the difference between the two?

 

[Taco]

The membrame is made of an other material. One of the woofers is focused for the midrange the other more for the bass.

 

[amo]

The ported design is very good, simply changing the cabinet isn't a good idea.

Ported it is then. What about placing the port at the front of the cabinet? Will this effect the design significantly?

 

[RAYGUN]

Years ago I purchased a pair of D2905/9900 Revelators and a pair of 18W/8545 woofers. I have long-since lost the crossover design I had intended to use. The Reference Monitor seems to be an ideal speaker for these drivers, but it uses a 18W/8546 woofer.

I'd be interested if anyone could inform me as to what changes to the crossover I need to implement in order to use the 8545 for this speaker design? The only other speaker I've been able to find on the net using these drivers is at:

http://www.audiocostruzioni.com/a_d/diffusori/scan-revelator/scan-revelator.htm

Any other suggestions?