The are great little drivers! I use them in my computer speakers (around 3 liters sealed, active XO at 120Hz). They have good detail resolution and easy to work with, too.
I bought two (for £15 each - humph!) and the TS parameters I measured, using SpeakerWorkshop, were not too close to what Audax specify. I never determined if this due to my measurement error, a SW software error or Audax manufacturing error! Some details:
http://www.diyaudio.com/forums/showthread.php?threadid=9993
Nice one,
David.
I bought two (for £15 each - humph!) and the TS parameters I measured, using SpeakerWorkshop, were not too close to what Audax specify. I never determined if this due to my measurement error, a SW software error or Audax manufacturing error! Some details:
http://www.diyaudio.com/forums/showthread.php?threadid=9993
Nice one,
David.
Attachments
Well if its any help the simple MT that ive got goes loud enough anyway and punches lowish too. So there is no reason really to worry, an MTM.5 or MTM MM threeway would go quite loud anyway.
Yes I think that a sealed box would be a good idea for the MTM and then ported for the .5MM bit. So whatever happens or you decide to go with im sure it will be sellable. Small footprint = high SAF, lots of drivers = high male wanting factor they look impressive. And if you do a good job on the xover and finish hopefully you could make a few bob.
Ill still post the design of mine when its completed if anyone wants any ideas.
Yes I think that a sealed box would be a good idea for the MTM and then ported for the .5MM bit. So whatever happens or you decide to go with im sure it will be sellable. Small footprint = high SAF, lots of drivers = high male wanting factor they look impressive. And if you do a good job on the xover and finish hopefully you could make a few bob.
Ill still post the design of mine when its completed if anyone wants any ideas.
Great pictures you two!
When I get round to knocking something up it won't look anything like those, lol
I agree that lots of drivers = desirable -it certainly does for me! 😉
I wouldn't be selling such a project for profit btw, just to cover the costs or thereabouts, and not enough of my friends have very high fidelity kit, so I need to help them maybe! I'll be making a set of speakers with these purely for learning and fun.
I look forward to seeing your design 5th, particularly as I have no measurement equipment, and would be trusting to luck a little bit in the x-over design (but that's part of the fun!) 😀
When I get round to knocking something up it won't look anything like those, lol
I agree that lots of drivers = desirable -it certainly does for me! 😉
I wouldn't be selling such a project for profit btw, just to cover the costs or thereabouts, and not enough of my friends have very high fidelity kit, so I need to help them maybe! I'll be making a set of speakers with these purely for learning and fun.
I look forward to seeing your design 5th, particularly as I have no measurement equipment, and would be trusting to luck a little bit in the x-over design (but that's part of the fun!) 😀
Nice work Mr Element!
I originally planned to use that tweeter (actually the version with the truncated faceplate). I proceded to design and build the box only to find that... Maplin had discontinued it! The round facelate version was slightly too large so I re-used the 10mm dome tweets from another project. It means I have to run the AP100Z0 fairly high but the result is still quite impressive.
simontY:
Nice one,
David.
I originally planned to use that tweeter (actually the version with the truncated faceplate). I proceded to design and build the box only to find that... Maplin had discontinued it! The round facelate version was slightly too large so I re-used the 10mm dome tweets from another project. It means I have to run the AP100Z0 fairly high but the result is still quite impressive.
simontY:
I use SW for all my speaker tweaking needs. The box underneath the speaker in my pic is the mic preamp/power amp. Cost about £20 to make, and the software is free.
Nice one,
David.
SimontY said:
Hi SimontY,
I'm not sure what that means in your country, but here in North America, I can assure it doesn't mean build something.😉
Cal
I know this is a bit side-tracked, but how does that work out so darned cheap? And what do you use for a mic.? We just bought a £30 (handy Maplins again!) Prosound vocal mic., which does include a FR graph in the box - could I use that? And with the crappy £25 Maplins preamp I bought?daatkins said:
You can use any mic for measurements but obviously your results will vary according to the mic response. I use a calibrated Panasonic mic that I imported from the USA for $20 but Vikesh did a bulk buy of uncalibrated Panasonic units a couple of months ago and sold them here for £3 each. Although uncalibrated, they're flat to around 10KHz and have a slight (around 2dB) hump around 12-15KHz - perfectly okay!
The box in my pic just contains a small gainclone to power the speaker under test, a single opamp mic preamp and a signal switching - that's all. The signal switching is based on Eric Wallin's jig:
http://www.gti.net/wallin/audio/jig2/jig2.html
Nice one,
David.
The box in my pic just contains a small gainclone to power the speaker under test, a single opamp mic preamp and a signal switching - that's all. The signal switching is based on Eric Wallin's jig:
http://www.gti.net/wallin/audio/jig2/jig2.html
Nice one,
David.
A mic preamp is a mic preamp as far as im concerned, aslong as the preamp doesnt alter the frequency response in anyway it'l be fine to use.
The mic also should be OK because you have a frequency response graph with it. What would be even better is if you could get a copy of the graph into the computer either via a scanner or taking a good pic with a digital camera. Then you could use SPL trace and create a calibration file for the mic. The only problem I can see is that you would have to invert the frequency reponse. For instance if there was a peak in the response, in the calibration file you would need a dip to get rid of it, simply copying the freq resp wont do as it will add peak in the mic to peak in the calib file and youll be super peak!😀
You will still need to make the wallin jig but if you do this with budget in mind (no gold plated phonos!) then you can do it without speding too much money.
Having the ability to measure things makes all the difference when making speakers
The mic also should be OK because you have a frequency response graph with it. What would be even better is if you could get a copy of the graph into the computer either via a scanner or taking a good pic with a digital camera. Then you could use SPL trace and create a calibration file for the mic. The only problem I can see is that you would have to invert the frequency reponse. For instance if there was a peak in the response, in the calibration file you would need a dip to get rid of it, simply copying the freq resp wont do as it will add peak in the mic to peak in the calib file and youll be super peak!😀
You will still need to make the wallin jig but if you do this with budget in mind (no gold plated phonos!) then you can do it without speding too much money.
Having the ability to measure things makes all the difference when making speakers
I also use the panasonic WM61A vikash was selling and I also have a calibration file. They work really well. How do I know?? easy, speakers I design using them and LSPcad sound great!😀
Oh no way, this is beyond freaky! The door just went and there seems to be a parcel waiting, probably for me!!! I'll let ya know what's inside... 😉
Thanks for the comments on mics, preamps, jigs, and software guys!! It looks like I've got a helluva lot of reading to do now... (like, what the heck is the jig for??)
Oh my golly gosh, I'm one very angry boy right now....
Those cretanous spaz-monkeys at Maplin have sent me 8 'dusk to dawn timed security lamp holders'. Bloody monkeys, absolute morons!!! I want speakers!!!!
And on my birthday!
Those cretanous spaz-monkeys at Maplin have sent me 8 'dusk to dawn timed security lamp holders'. Bloody monkeys, absolute morons!!! I want speakers!!!!
And on my birthday!
🙁 I feels for you, although not as bad I ordered a large amount of stuff resistors caps etc for amps, and they send me a variable capacitor instead of a resistor. Still that meant the amp wasnt going to do anything till the next day when I could go to maps and get what i really wanted.
Happy Birthday Simonty
Its really annoying that they sent you security lamp holders, they could have atleast sent something you could have had a bit of fun with, then returned a few hours later.😀
OK the jig - to measure impedance speakerworkshop uses the jig. What this contains are a few resistors. Now you calibrate workshop telling it what values the resistor are and telling workshop the input impedance or your soundcard. This enables workshop to measure imp.
Happy Birthday Simonty
Its really annoying that they sent you security lamp holders, they could have atleast sent something you could have had a bit of fun with, then returned a few hours later.😀
OK the jig - to measure impedance speakerworkshop uses the jig. What this contains are a few resistors. Now you calibrate workshop telling it what values the resistor are and telling workshop the input impedance or your soundcard. This enables workshop to measure imp.
Thanks! 😀5th element said:
Ahh, so it helps us to measure impedance... Cheers.
Actually, altho I make out this order going wrong as a big deal, I wasn't going to do anything with the speakers right away anyway. It's just annoying to deal with it! 🙁 And it seems to happen to me so often - once I went to Farnell and bought some 10,000uF Samwha caps over the counter - got half way home and unwrapped the packaging to find some strange coil things, I was very upset, they were just about to close when I left - coulndn't get a lift back there for days... 🙁
Another time, I made an order with the overclocking store or tekheads (same thing now) and they missed off a rounded floppy cable, then ignored my e-mail about it. They just stole £5 basically.
Another one of these cowboy e-crap-dealers gave me a foreign motherboard manual!
There are others too but you get the picture...
I have 6 on order, dispatched monday pm acording to maplin, hopefully not by the same packer that did SimontY's !!!! I wonder how long their stocks will last at this rate ...
I will use a pair in the workshop and the rest for mid/bass in 3way active to replace my ancient R50's. No box designs yet but I do have a shiny new 1.5KW router to play with 😉
Thanks for the tip pinkmouse 😀 😀
Dave
I will use a pair in the workshop and the rest for mid/bass in 3way active to replace my ancient R50's. No box designs yet but I do have a shiny new 1.5KW router to play with 😉
Thanks for the tip pinkmouse 😀 😀
Dave
All the things ive got from farnell have been fine although I always buy with them online, didnt even know they had shops😀
I got a zalman silent flowercooler from techheads, very good price no problems there either😀
Although you do not have all the bad luck ive had a few times when things have just gone wrong and it is plain annoying.
I got a zalman silent flowercooler from techheads, very good price no problems there either😀
Although you do not have all the bad luck ive had a few times when things have just gone wrong and it is plain annoying.
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