Hi, after years spent in admiration of compression drivers i could not resist and i bouth a pair ... these ones
Pyle 800w 3" Titanium Horn DJ Cabinet Compression Driver 8 Ohm Bolt On Tweeter | eBay
i guess is this one ...
PylePro - PDB752-DJ Equipment-DJ Tweeters and Horns
The reason why i bought them is the impressive freq response ... it can be used from around 500 Hz all the way up to 15kHz ... and for me could be enough in the high 😀
Being completely ignorant i wonder which kind of horn could be used on this driver 🙄
I would like a shallow one possibly ... and with a price in line with the driver, that is cheap 😱
For the rest of the range (i.e. from 500 Hz down) i will use a 2nd PA speakers
Thank you very much for any suggestion
Kind regards, gino 🙂
Pyle 800w 3" Titanium Horn DJ Cabinet Compression Driver 8 Ohm Bolt On Tweeter | eBay
i guess is this one ...
PylePro - PDB752-DJ Equipment-DJ Tweeters and Horns
The reason why i bought them is the impressive freq response ... it can be used from around 500 Hz all the way up to 15kHz ... and for me could be enough in the high 😀
Being completely ignorant i wonder which kind of horn could be used on this driver 🙄
I would like a shallow one possibly ... and with a price in line with the driver, that is cheap 😱
For the rest of the range (i.e. from 500 Hz down) i will use a 2nd PA speakers
Thank you very much for any suggestion
Kind regards, gino 🙂
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It's a 2" exit driver so look for a 2" bolt on horn with a 4" bolt pattern.
The frequency response is listed as 1k and up but I don't see much in the way of specs. If you can find the resonant frequency, double it as your starting point for the XO, minimum 2nd order.
The frequency response is listed as 1k and up but I don't see much in the way of specs. If you can find the resonant frequency, double it as your starting point for the XO, minimum 2nd order.
the hole for the music to exit looks like it is drilled as parallel.
Does that mean the horn must have a 0 (zero) degrees included angle throat to match with the driver?
Does that mean the horn must have a 0 (zero) degrees included angle throat to match with the driver?
Hi and thank you very much indeed for the very valuable reply. 🙂
First let me explain my "insane" project 🙄
Looking at the freq response in the datasheet attached i see the 500 and the 15kHz at the same level ... very impressive
Unfortunately there are no TS parameters and the indication of the horn used to get the response is missing
As i am getting old i think that 15k will be more than enough ... i could not listen above i am afrain
this would be the high section of my retirement speakers
The ears get stiff with the age and some more SPL is required
Joke aside i have become lately a lover of high efficiency speakers
Why go with hundreds of watts when there are driver so mighty powerful ?
And i would bet that the distortion at normal SPL out of this driver will be exceptionally low ... maybe i am wrong. What do you think ?
Thank you very much for the very precious advice
I could try sending an email to the support service
But a 75mm diaphragm should have no problems to give a good 500 Hz
And it should be also quite robust i guess
I have to find a programm to calculare the filter also
For the range 500 to 50 i would look for something PA ... that could give me an overall sensitivity of around 95 dB
I am expecting a great sound indeed even with very little power
Regarding the horn ... could you recommend me any specific brand/model ?
Thanks a lot again.
Kind regards, gino
P.S. i would like to add only a thing i have read on a magazine regarding a pubblic demo of the JBL Everest
They are practically a 3 ways with a mid with a 4" diaphragm ... even bigger that this one
Just to test its freq response they put a blanket on the tweeter and nobody felt that something in the highs was missing
I am looking only for the 15kHz .. no more
But also for a midrange with very very low distortion
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According to the spec sheet this is a 1.4" exit driver which means it likely has an 800-1khz minimum crossover frequency. You could use a 2" exit horn with a 1.4" adapter but there are also 1.4" exit horns now too like this one.. Pyle PH916 1.4" Bolt-on Constant Directivity Horn
That horn has a minimum crossover freq of 1khz so that's what you need to use, but given the drivers sensitivity you could use a pair of 12" drivers with each one to get a very high output system.
That horn has a minimum crossover freq of 1khz so that's what you need to use, but given the drivers sensitivity you could use a pair of 12" drivers with each one to get a very high output system.
Are you using this for home listening or PA use?
You can build ur own horn, btw.
The most obvious and simple way to start is a conic horn.
IF the driver throat has any length (these look to the unaided eye as only the thickness of the front pole piece and the depth of the magnet?) to the expansion that is simply a parallel (cylindrical) wall section, then they are likely intended for "Oblate Spheroid" type "waveguides". Although this is not certain, and I am speculating here.
regardless, it is a good idea to continue the expansion of the driver's internal expansion and not deviate quickly, causing a discontinuity.
But beyond that, you could use any horn you wanted that mated up with the exit hole. The depth of the horn will be dictated entirely by the expansion type and the lowest frequency required, which will dictate the mouth size, and so due to geometry, the length.
The shortest horn expansion seems to be the "oblate spheroid" or the Geddes type waveguide (there are at least cosmetic similarities).
I'd not try to get into horns and aim for short depths in general.
To cover down to 500Hz, expect to need to have a horn that has a geometry designed to go a bit lower in most cases...
_-_-
You can build ur own horn, btw.
The most obvious and simple way to start is a conic horn.
IF the driver throat has any length (these look to the unaided eye as only the thickness of the front pole piece and the depth of the magnet?) to the expansion that is simply a parallel (cylindrical) wall section, then they are likely intended for "Oblate Spheroid" type "waveguides". Although this is not certain, and I am speculating here.
regardless, it is a good idea to continue the expansion of the driver's internal expansion and not deviate quickly, causing a discontinuity.
But beyond that, you could use any horn you wanted that mated up with the exit hole. The depth of the horn will be dictated entirely by the expansion type and the lowest frequency required, which will dictate the mouth size, and so due to geometry, the length.
The shortest horn expansion seems to be the "oblate spheroid" or the Geddes type waveguide (there are at least cosmetic similarities).
I'd not try to get into horns and aim for short depths in general.
To cover down to 500Hz, expect to need to have a horn that has a geometry designed to go a bit lower in most cases...
_-_-
That would make sense for a 3" diaphragm. Where did you find the spec sheet?
EDIT: Never mind, I found it.
Gino, there are lot's of 1.4" horns so find what suits your needs. If you have to you can buy a screw on adapter that bolts to your drivers so you're not limited by what horn.
Hi and i am going to use it for home listening for a zero distortion project.
My idea is that a driver of this kind used at very low level has no distortion at all ... i mean huge dynamic with the transparency of an electrostatic driver
The ultimate sound experience ... something completely out of reach for a conventional speaker ...
Thank you very much indeed for the very valuable advice
If i understand well you mean that to get the 500 Hz i would need necessarily a big and deep horn ? that i do not like ... i would like to get one reasonably small ....
I think i should give up with the 500 Hz idea in the case.
I do not want something very intrusive ...
Anyway i wonder what kind of driver could give me this blessed 500 Hz
I do not like the woofer to cope with this frequencies ...
Thanks a lot and kind regards, gino
Hi and thanks very much again
But if it is true that this bloody driver cannot give the 500Hz i wonder how they have got that freq response ... if only these nice people told me which kind of horn they have used ....
My dream is 500 to 15k with the same driver ... without having to buy a 4" JBL totl driver ... that i know can do this ... amazing performance
The one on the JBL everest for instance can do this quite easily
A blanket on the tweeter was not impacting substantially the overall performance at a pubblic demo of the speakers
I have the feeling that having the 500 to 1000 range reproduce by the midtweeter should give a much better sound ... less distortion i mean than in the case of the same window reproduced by the woofer
I have no measurements but i would think so
Thanks again and kindest regards, gino
Hi and thanks you a lot for the very valuable suggestion
Just another question ... do you think that to fix the cut freq at 500 instead that 1kHz in a two ways can give some benefit ? mine is only a feeling that in this way i will get a cleaner lower midrange
By the way i am about to send an email to Pyle support service and ask:
1) which is the fs of the driver i bought
2) which horn they have used to get the response in the data sheet (just perfect to me)
3) which other horn they suggest
Should i ask any other things ?
I have registered your valuable suggestion and i am thinking about it
This time after some indecisions i am very set on the HE option ... very.
Thanks a lot again. Kin dregards, gino
That does change things, at that SPL this driver will only be seeing fractions of a watt so you can almost throw all the official manufacturer recommendations out the window because they are geared towards keeping the driver alive at it's maximum rated power handling level. In this case I think you could use a 500hz crossover frequency with this driver but you will still need a horn that supports a 500hz crossover, with one that doesn't the driver is unloaded and distortion increases exponentially.
Hi and thank you very much indeed for the helpful reply
But do you mean also that at low power the performance will be poor ? this is important for me to establish
Am I right if i thin that if the distortion is low at 100dB it should be even lower at 90dB ?
I am attaching the driver's datasheet for reference
I see that the driver has a throat size of 1.4" ... i have learnt only now about this size ... i was focused on the coil size.
From what i understand now the drivers that can go really low sport a 2" throat
I understand also that 1.4" to 2" adapters exist
So ... what i have to do if i want to stay with this driver and get this blessed 500 Hz ?
I have also noticed a spectacular response on the datasheet ... so i have emailed the Pyle tech support to get:
1) fs value
2) which horn they have used to get the response in the datasheet, that for me is just perfect.
Regarding again the max SPL i do not think that i will go above 95 dB at 3 meters ... i would prefer to keep things simple to use a passive crossover
Even i have the feeling that it is not the best solution.
An active xover can provide 24dB/octave filters without problem.
Should i go active ?
Thanks a lot and kind regards, gino
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No.. not at all, what you are proposing is commonly done by those in the high efficiency home audio circles where 5-10w tube amplifiers and fully horn loaded speakers are very common.
yes. though I don't know if it would be noticably lower since at both of these levels the driver is still in the fractions of a watt range.
Simply get a horn flare that can support a 500hz crossover, if it happens to be a 2" exit horn then you need to add an adapter between the horn and driver. This is where I suspect you will have to make a compromise though as this horn will likely be larger than you would like.
If you have the option to go active I would advise it, at least for the design stage to allow you to quickly hear what different crossover frequencies and slopes sound like.
Hi and perfect and thank you ! this relaxes me a lot ... 🙂
so it is a sane move ... good !
In case i will use an adapter the compromise will be limited to the horn size or also to the adapter influence on sound ?
How big are these 2" horns ? ... more or less i mean
I could bear the size if it is really needed for good sound.
Actually i have already a cheap Behringer ... with 24dB/octave slopes
As you say i could use it during the testing
I am really curious to listen what this driver can give in the midrange
Low distortion together with high dynamic should give a fantastic sound
Hopefully .... 😱
Thanks a lot again. Kind regards, gino
I agree.
An active experimentation could be very instructive and once the finalised arrangement has been decided, it may be that one will keep the active option.
A relatively tiny ClassA amplifier for the top 5 octaves and a suitable amplifier for the bottom 5 octaves.
But i have doubts about actually achieving 5octaves of very good performance.
However it has been done.
There was a Thread mention about an 8octave horn designed and built in c 1930 recently.
http://www.bbc.co.uk/news/uk-27483035
http://www.youtube.com/watch?v=2yQ2IQ2b_YE
An active experimentation could be very instructive and once the finalised arrangement has been decided, it may be that one will keep the active option.
A relatively tiny ClassA amplifier for the top 5 octaves and a suitable amplifier for the bottom 5 octaves.
But i have doubts about actually achieving 5octaves of very good performance.
However it has been done.
There was a Thread mention about an 8octave horn designed and built in c 1930 recently.
http://www.bbc.co.uk/news/uk-27483035
http://www.youtube.com/watch?v=2yQ2IQ2b_YE
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A 500 Hz horn is going to be relatively large so consider you options when deciding an XO frequency. It's too bad you are so far away. I have horns that you should listen to. Just because it says it will do 500 Hz, doesn't mean it sounds good that low. When is your next trip to Canada? 😉
Hi and thanks again for the valuable advice
We say in Italy, first the grammar and than the writing
I really think that some basics are needed. So i am here ... also to save time 😱 Better to have an advice from experts because i could understand the grammar wrongly
I should also study some basic physics applied to drivers
yes the needs are very different in terms of power at least
Just fractions of watts i understand could be more than enough for a normal home listening.
Wow ! very impressive but of course impossible in a normal environment
Anyway ... i think that even quality speakers for PA are able of tremendous performance in terms of low distortion and high SPLs
Distortion must be kept low as much as possible ... this is what had driven me to compression drivers ... nothing conventional can keep the pace
Thanks again, gino
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