Modern speakers vs Vintage speakers

[thomask]

R. I . P. to Carlos Marin of Il Divo who died of Covid complication.

 

[thomask]

I had added two 18 inch Scaena subwoofers at 45 hz lowpass crossover using Crown XLS 2502.

It add slightly more rumble and tighter bass.

But the difference is rather small.


That means Altec A7 can do well without any subwoofers at my listening room.

 

[thomask]

For the comparison.

I also upload the music at same volume with sub woofer off.

 

[Robh3606]

For the comparison.

I also upload the music at same volume with sub woofer off.

You might want to chose something that has significant output below 40hz

Rob

 

[thomask]

You might want to chose something that has significant output below 40hz

Rob

I also had tried Gate of Dafos but got similar impression.

 

[DasguteOhr]

I also had tried Gate of Dafos but got similar impression.

maybe toccata with organ, the whole house vibrates

 

[Robh3606]

I also had tried Gate of Dafos but got similar impression.

Since you have the subs you might want to try different crossover frequencies. For example try 80Hz so the sub is now doing the first 2 octaves. I don't know what you are using as a crossovers but if it's a L/R it's 6dB down at the crossover point. That and the slope and you are barely even using the subs.

Rob

 

[thomask]

Since you have the subs you might want to try different crossover frequencies. For example try 80Hz so the sub is now doing the first 2 octaves. I don't know what you are using as a crossovers but if it's a L/R it's 6dB down at the crossover point. That and the slope and you are barely even using the subs.

Rob

I am using the crossover function inside XLS 2502.

80hz appears to be too high but I will try 56 hz.

 

[Robh3606]

I am using the crossover function inside XLS 2502.

80hz appears to be too high but I will try 60 hz.

OK so you are using the DSP in the amp. So it is 24db L/R, you are limited to frequency only. How are you rolling of the A7's?? If you are not experiment with the polarity on the subs. There could be an inversion you may not be aware of.

Rob

 

[DasguteOhr]

I had added two 18 inch Scaena subwoofers at 45 hz lowpass crossover using Crown XLS 2502.

It add slightly more rumble and tighter bass.

But the difference is rather small.


That means Altec A7 can do well without any subwoofers at my listening room.

My next project start with 18"woofer too as ripole

 

[Solypsa]

which woofer are you using?

 

[MarcelNL]

also, did you match SPL? 3dB off means you hear half of what you should,
And, even more importantly, did you put them in time sync with the A7? (meaning, did you shove them around the room to align time coherence of the output with the A7, or measure it?)

 

[McDee275]

Huey and Dewey wish all of you a merry christmas and a happy new year.​

Stay healthy and get your vaccination.


lol
Volker

 

[DasguteOhr]

which woofer are you using?

re-labeled eighteen sound woofer (bastanis speaker mandala)not available today .when you build a ripole search for a woofer with fs ~ 35hz,qts around 0.4-0.6 and linear stroke of 6-8mm. Look beyma

Products - Beyma - Professional Speaker Manufacturer since 1969

Find the speaker that suits better with your needs in an easy way, thanks to our powerful filters and the product comparator.

www.beyma.com

Due to their smallness the chambers add a serious dynamic load to the drivers which leads to the lowering of Fs and raise of Qts.
The smallest chamber shows the greatest effect and depending on the driver parameters Fs may sink by up to 15Hz. You get around real -3db at 20hz.

 

[thomask]

I would love to hav RCA field coil speakers made in 1937.

You can go to 29:30 of the video.

 

[thomask]

Nice new horn system called Seawave Accoustics at 41:00 of the above video.

 

[thomask]

Another video of Seawave Accoustics horn speaker.

Nice sound!

I may try to have a chance to audition this speaker when I visit Korea next year.

 

[Rensselaer]

Here's the Tchaikovsky 3rd movement with David Oistrakh and Kondrashin

Did you make those tonearms? I don't recognise them.

 

[bonzo75]

Did you make those tonearms? I don't recognise them.

If you click on the link it will take you to YouTube and you will see that it is not my channel

 

[thomask]

Buddist monk is making modern speakers.

You can go to 4:40 for playback.