For those interested in a smoother Jordan JXR6HD modules. Here is a measurement of four Bandor 50 modules, single copper wound, eight ohms, low inductance. MLS stimulus, less than 1W, 6mm electret mic, relative dB values, cardboard as a baffle, 45 deg to the carpet.
Attachments
Hi Jack!
give us more! 🙂
what can be the cause of this depression 1500<3000 Hz?
Are there any significant resonances visible in the unsmoothed response?
regards,
graaf
give us more! 🙂
what can be the cause of this depression 1500<3000 Hz?
Are there any significant resonances visible in the unsmoothed response?
regards,
graaf
Hello Graaf,
Depression has two causes:
1) Very delicate suspension that result in "rim resonance".
2) Energy reflected through the cone from the carpet.
This means that one have to be careful with stored energy in the cabinet. Doreen called me one hour ago and she can straighten FR response but she feels it isn't necessary. You can get a better midrange from aluminium coil.
There are of course very high Q resonances above 10K but they are -25dB down. For evaluation I need better measurement.
I wish in this thread we compare 1000 times lighter membrane. My recent ribbon (appended picture) speaker is quite good however we have larger Q diffraction and worst transformer. In this week I'll get amorphous C core from AMS Irleand. A lot of parameters needs to be adjusted then. Ribbon also need a screen damping like in microphones.
I also made Jordan JXR6HD measurement in the same setup but response was bad so at the moment won't show anything 🙂
(I think better baffle is needed).
Cheers,
Jack
Depression has two causes:
1) Very delicate suspension that result in "rim resonance".
2) Energy reflected through the cone from the carpet.
This means that one have to be careful with stored energy in the cabinet. Doreen called me one hour ago and she can straighten FR response but she feels it isn't necessary. You can get a better midrange from aluminium coil.
There are of course very high Q resonances above 10K but they are -25dB down. For evaluation I need better measurement.
I wish in this thread we compare 1000 times lighter membrane. My recent ribbon (appended picture) speaker is quite good however we have larger Q diffraction and worst transformer. In this week I'll get amorphous C core from AMS Irleand. A lot of parameters needs to be adjusted then. Ribbon also need a screen damping like in microphones.
I also made Jordan JXR6HD measurement in the same setup but response was bad so at the moment won't show anything 🙂
(I think better baffle is needed).
Cheers,
Jack
Attachments
Another interesting approach is to use Bandors as very low noise and high quality directional microphones with a careful design like PJ Baxandall's differentiatior. Doreen seems to have many users of this kind.
perhaps a suitable cabinet can be a pipe like in "Yoshii 9" or in "Pluto"?jzagaja said:
geez! this sounds REALLY esoteric, fullranger as a microphone 🙂jzagaja said:
best,
graaf
I like "Pluto" enclosure but only if one has suitable reflector for high frequencies. Impedance peaks (n*Fs) should be carefully damped then. With anodized Bandors you can make wonderful looking speakers. Will try in future.
Bandors play much deeper bass notes than Jordans.
Bandors play much deeper bass notes than Jordans.
jzagaja said:
no surprise - JXR6 Fo 80 Hz, Qts 0.45 and Bandor Fo 65 Hz, Qts 0.6
apparently at low SPLs low bass is not outside of the reach of such small drivers, perhaps this is also the case of "Yoshii 9"
best,
graaf
With acoustic music a lot of people can be satisfied. Don't forget it is only 50mm cone. I'm very comfortable with Bandors. You don't have to play music loud on them. Not only they measures well but has some magic. I've found imaging natural behind speaker line. Disadvantage is I have to give them back to the owner on Saturday 🙁 🙂
How's the sound?
Hi Jack,
Since you actually have both the Bandor and the Jordan, how do you rate the sonic difference between the 2. particularly the mids and highs?
Since the Jordan are out of production for so long, i am beginning to wonder if they will ever come back online again...
So far I have tried the one from Mark Audio, they are really nice, but I guess I am curious about the rest....
Oon
Hi Jack,
Since you actually have both the Bandor and the Jordan, how do you rate the sonic difference between the 2. particularly the mids and highs?
Since the Jordan are out of production for so long, i am beginning to wonder if they will ever come back online again...
So far I have tried the one from Mark Audio, they are really nice, but I guess I am curious about the rest....
Oon
There is small problem with comparison. Jordans have 2mm steel box with damping (baffle width half of Bandors). WIth Bandors mounted in cardboard box I simply hear something is wrong (rumbling) with Jordans around 1kHz. CSD doesn't show any problem. What is clear - highs are comparable and I prefer Bandors because they have a bass and I can listen them without bass support and any effort with pleasure. Jordans for the other hand are louder and without bass so listening is a bit fatiguing.
And what is really important with Bandors you can chose:
- surface finnish
- impedance
- copper or aluiminium coil (has influence on midrange)
- single or double wound (box type)
It is now easy to order them via PayPal but you have to wait a bit especially for 150mm unit because of metal parts supplier delays.
And what is really important with Bandors you can chose:
- surface finnish
- impedance
- copper or aluiminium coil (has influence on midrange)
- single or double wound (box type)
It is now easy to order them via PayPal but you have to wait a bit especially for 150mm unit because of metal parts supplier delays.
So,
I take it the Jordans are a bit more lifely? From your description, but you actually prefer the Bandor? Since the treble is comparable, it is worthwhile looking into. what about the vocals, are they similar airiness?
Oon
I take it the Jordans are a bit more lifely? From your description, but you actually prefer the Bandor? Since the treble is comparable, it is worthwhile looking into. what about the vocals, are they similar airiness?
Oon
Hi,
Just realised that there are a few models out there from the webpage. I assume you are using the 50mm driver. Which is the one you are having? Where did you buy it from, the website bandor.com too?
Oon
Just realised that there are a few models out there from the webpage. I assume you are using the 50mm driver. Which is the one you are having? Where did you buy it from, the website bandor.com too?
Oon
Bandor 50SW8 (single wound, copper coil, 8 ohms) is just smoother, darker more relaxing... and much cheaper. Vocals have mentioned airiness too. It reminds Manger transducer in tonality and imaging.
I have ordered Bandor 150 module. Fifties now gone to a friends.
Above module goes up to 10k. It's time to make ribbon modules for them.
The most funny thing with Bandors is that reviewers say that bass is deep but uncontroled and in the same time double bass (acoustic bass) sounds so natural.
I have ordered Bandor 150 module. Fifties now gone to a friends.
Above module goes up to 10k. It's time to make ribbon modules for them.
The most funny thing with Bandors is that reviewers say that bass is deep but uncontroled and in the same time double bass (acoustic bass) sounds so natural.
I can send PayPal email account so you can easily pay. I bought directly from Doreen. Small shipping is 15 pounds for 50mm modules in EU countries.
sound of Bandors is often compared to Quad ESL
so I expect that this is not a typical "audiophile" sound of "boom boom - tss tss"
so I expect that this is not a typical "audiophile" sound of "boom boom - tss tss"
We have paid 100 (50SW8 pair) + 17.50 VAT + 62.39 shipping = 185,89 pounds. This is twice as chap as Jordans. Standard letter.
If you'd like to buy just call Doreen (www.bandor.com), check if she can made them and if you like PayPal than I can send email of her niece to you - it should be quicker 🙂 (it took one year for me to order Bandors 😉
If you'd like to buy just call Doreen (www.bandor.com), check if she can made them and if you like PayPal than I can send email of her niece to you - it should be quicker 🙂 (it took one year for me to order Bandors 😉
Hi,
i am curently enjoying my Little Bandors, do you know if there is much difference with how the voice coil is wound and the material? as you said you have the 'single wound, copper coil' what are the options and what difference might they make?
I hear that the new neodymium magents are on order, sound interesting if the magent/frame is smaller to allow more air flow behind the driver.
also, how do people cope with the lobing when they have multiple units, like 2,4 or 8/16 etc? Or would a Bipole with two 8Ohm drivers be a better bet?
Regards
Inrank
i am curently enjoying my Little Bandors, do you know if there is much difference with how the voice coil is wound and the material? as you said you have the 'single wound, copper coil' what are the options and what difference might they make?
I hear that the new neodymium magents are on order, sound interesting if the magent/frame is smaller to allow more air flow behind the driver.
also, how do people cope with the lobing when they have multiple units, like 2,4 or 8/16 etc? Or would a Bipole with two 8Ohm drivers be a better bet?
Regards
Inrank
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