Hopes of doing my first design... dashed

[absolootbs]

reading paul's latest faq led to reading wolf's "tips" blogs, and the combination of the two led to the requisite knowledge and desire to start playing around in jeff's software. this all coincided with seeing someone mention that zaph had measurements for the super cheap jamo 24394 buyout woofer, so i decided to make that the subject of my tinkering. spent a good amount of time over the last week-or-so working on a 2-way using that woofer, in combination with the vifa bc25sg15-04 that is also cheap and has been measured by zaph. i felt like i was really getting somewhere and for the last couple days i've been intending to post my progress and ask for opinions/advice/etc... and now today i see that the jamo is sold out. grrrrrr :mad:. i guess thats the way it goes when it comes to designing with low stock buyouts.

can anyone suggest an alternative cheap, somewhat easy to use but not too popular woofer, thats been measured and might work well in a guys first design? i know thats like asking to have your cake and eat it too, but i figured it couldn't hurt to ask.

[Brewski]

I'm partial to the peerless 835004 6.5" mid woofer as a buyout speaker. I think a few have had good luck with the bravox speakers but I'm not sure if they've been posted in a measurement thread like the peerless.

Take it easy
Jay

[johnnyrichards]

The Audax/Max Fidelity buyout is nice and super easy to work with. My Iowa project is using that and the $10 Vifa buyout tweeter.

The $10 Peerless 6.5 looks most excellent, as well.

[tom_s]

I had just finished working up a design for a friend with very little cash using those same woofers. It was finally taking shape after a few pointers from Wolf. Then, like you, found that they were no more!:( I'm not sure I trust my own meager measurements yet to go it alone with the 20394, but if I have to order anything in the next few weeks, I'll probably throw a few of those in my cart. I hope they share the same genetic traits as their brother.

[absolootbs]

yea, i think it was you that i was referring to in the OP that turned me on to these, tom. so i blame you tom, you. ;) just kidding of course. it was fun and good experience starting a design, even if building is no longer feasible.

i noticed that peerless as i browsed the remaining buyouts, but then i remembered it's what lou used in his lecbos, and the tweeter he used in those (bc25tg19-04) is very similar to the one i've been working with (bc25sg15-04). i felt like i'd be pretty unoriginal going that route, since i'd essentially just be designing a lecbos mt. on the other hand, the advantage would be that thanks to lou, there are readily available measurements of the peerless.

johnny, is this (http://www.parts-express.com/pe/showdetl.cfm?Partnumber=299-071) the max fidelity you're talking about? if so, do you happen to have any frd's and zma's you could share?

i also noticed the peerless 850443 that zaph has on his site, that he says is nht surplus. i bought a foster plate amp from jack a while ago, and he seemed like a very nice, helpful guy, so i'd be more than happy to buy from him again. problem is, zaph doesn't list the nht part numbers and jack doesn't list the peerless part numbers. does anyone know which nht this might be? maybe the 081?

[tom_s]

Yep, that Jamo woofer has potential and the price was sure right!


problem is, zaph doesn't list the nht part numbers and jack doesn't list the peerless part numbers. does anyone know which nht this might be? maybe the 081?

Looking at the T/S parameters listed on Jack's spreadsheet compared to Zaphs measurements, it looks like it's the 080. I don't know how often Jack updates the spreadsheet, but it only lists 25 left in-stock. I have been wondering about those AR 12" for quite some time....I should probably just buy them and stop wondering!:D

[LouC]

If your gear can handle a 4 ohm load (use 20 ga coils and it will) I'd second the Peerless 835004 & an easy to use tweeter (Dayton Silkie, or ND28, HiVi SD1). You'll have plenty of wiggle room for the crossover. I know somebody besides me has used that woofer. Spend a few more $$ on drivers and you'll save it on crossover parts.

[johnnyrichards]

yea, i think it was you that i was referring to in the OP that turned me on to these, tom. so i blame you tom, you. ;) just kidding of course. it was fun and good experience starting a design, even if building is no longer feasible.

i noticed that peerless as i browsed the remaining buyouts, but then i remembered it's what lou used in his lecbos, and the tweeter he used in those (bc25tg19-04) is very similar to the one i've been working with (bc25sg15-04). i felt like i'd be pretty unoriginal going that route, since i'd essentially just be designing a lecbos mt. on the other hand, the advantage would be that thanks to lou, there are readily available measurements of the peerless.

johnny, is this (http://www.parts-express.com/pe/showdetl.cfm?Partnumber=299-071) the max fidelity you're talking about? if so, do you happen to have any frd's and zma's you could share?

i also noticed the peerless 850443 that zaph has on his site, that he says is nht surplus. i bought a foster plate amp from jack a while ago, and he seemed like a very nice, helpful guy, so i'd be more than happy to buy from him again. problem is, zaph doesn't list the nht part numbers and jack doesn't list the peerless part numbers. does anyone know which nht this might be? maybe the 081?


That's the one, but i don't have any FRd files you would find very useful. Mine are in-box and in-room specific.

[Brewski]

i also noticed the peerless 850443 that zaph has on his site, that he says is nht surplus. i bought a foster plate amp from jack a while ago, and he seemed like a very nice, helpful guy, so i'd be more than happy to buy from him again. problem is, zaph doesn't list the nht part numbers and jack doesn't list the peerless part numbers. does anyone know which nht this might be? maybe the 081?

For the Peerless 850443 and practice using PCD here's a thread you should take a look at. http://techtalk.parts-express.com/showthread.php?t=216158

You could work with the same files and parameters posted in that thread. Start off not looking at the designs posted and design your two way. Then compare what you did with what other designers at PE posted in the thread. By the same token you could do that with the peerless 835004 comparing your PCD results with different designs such as Lou's results, my sims, and fish 24-7's sims.

Take it easy
Jay

[2leftthumbs]

i also noticed the peerless 850443 that zaph has on his site, that he says is nht surplus. i bought a foster plate amp from jack a while ago, and he seemed like a very nice, helpful guy, so i'd be more than happy to buy from him again. problem is, zaph doesn't list the nht part numbers and jack doesn't list the peerless part numbers. does anyone know which nht this might be? maybe the 081?

The nht 081 is the peerless 850443.

[2leftthumbs]

The Audax/Max Fidelity buyout is nice and super easy to work with. My Iowa project is using that and the $10 Vifa buyout tweeter

Johnny, Not intending to hijack the thread but what have you put together on the max fidelity/ vifa project? I bought 4 of the 5.25"ers and am now wondering what I intended to do with them.

[johnnyrichards]

Johnny, Not intending to hijack the thread but what have you put together on the max fidelity/ vifa project? I bought 4 of the 5.25"ers and am now wondering what I intended to do with them.

Kinda keeping it under wraps right now, not because of anything "top-secret" or anything. Just... because :)

After Iowa, I will release all details. It is looking very promising so far, though. I will post a FR measurement (still very much a WIP though) later this evening.