Upcoming project list of parts.

[Lee in Montreal]

So, Allan. What are your "plans" (pun intended). BTW I checked the specs of the 2123 and found it to be a strange beast. Might not be easy to integrate as it seems its range is 300Hz to 4Khz. Not low enough to integrate with the 2245, and not high enough to meet the 2405. Matched to a 2397, it would have a narrowband of 300Hz-1KHz.

http://www.audioheritage.org/vbullet...1&d=1281036846

What are your thoughts?

[Allanvh5150]

Hi Lee,

At this stage I have enough drivers to build a 4355, a pair of 4345's and a pair of 4344's. I will be using the 2441's above the 2123's so they will not need to extend to the 2405's. I was thinking to do the 4355 and 4345's standard but have a 2397 sitting on top. I am not sure at this stage if the setup will be fully active or not.

Allan.

[sonofagun]

Don't forget grilles

[Allanvh5150]

There will be grilles, do not worry. Here is the plug plate that I will be machining out of aluminium.

Speaker Plug Plate Assembly.pdf

[ivica]

So, Allan. What are your "plans" (pun intended). BTW I checked the specs of the 2123 and found it to be a strange beast. Might not be easy to integrate as it seems its range is 300Hz to 4Khz. Not low enough to integrate with the 2245, and not high enough to meet the 2405. Matched to a 2397, it would have a narrowband of 300Hz-1KHz.

http://www.audioheritage.org/vbullet...1&d=1281036846

What are your thoughts?

Hi Lee,

what kind of problem with 2123 would be expected. it seems to me that the region from over 300 to 2000 can be can managed by 2123.

regards
ivica

[Lee in Montreal]

Hi Lee,

what kind of problem with 2123 would be expected. it seems to me that the region from over 300 to 2000 can be can managed by 2123.

regards
ivica

I woudn't cross the 2245 at 300Hz. 200 maybe. It's a big heavy cone...

[ivica]

I woudn't cross the 2245 at 300Hz. 200 maybe. It's a big heavy cone...

Hi Lee,

I would not expect any "recognized-able" difference between crossover at 200Hz vs 300Hz, but under such "constrains" may be 2206 can help in order to "fill the gap" between 200Hz and something over 1000Hz, where VHF driver would become involved. But as 2123 is high efficiency driver ( about 100dB/1W/1m), I believe that some "work" around the mid-bass network would help to allow 2123 to be used...in the project.

Reagrds
Ivica

[Lee in Montreal]

Here's a relevant discussion on the use of 2123 drivers with different crossover frequencies and woofers.

http://www.audioheritage.org/vbullet...ay-system-poll

Lee

[Ruediger]

I woudn't cross the 2245 at 300Hz. 200 maybe. It's a big heavy cone...

If the cone had problems at higher frequencies one should see that in the impedance plot. A cone breakup costs energy, that must come from somewhere, and the symptom is a lower impedance at the frequencies in question. I think some drivers of the E-series show that.

To my opinion 300 Hz and even more are not a problem.

Ruediger

PS the impedance plot is in the data sheet in the transducer information forum.