A minor or a major sin? You decide.
Using a garage sale box and some bits from the shed to make a new set of party speakers.
Going though my spare parts and trying to figure out a crossover to go with the hodgepodge of drivers I'll be using I couldn't make a decision.
Went on eBay this AM and found some Jaycar 3-Way crossovers from about 20 years ago [ 2004 catalogue says $57- each 200 watts and frequency divides to suit the old Tandy 2" dome at 1500 and 5k-.
It's a junk box why not use a junk XO? So I bought 2.
Near enough good enough?
I will need to put a zobel on the woofer but that's from stuff in the junk box and I finally get to re-use the old Tandy dome
Using a garage sale box and some bits from the shed to make a new set of party speakers.
Going though my spare parts and trying to figure out a crossover to go with the hodgepodge of drivers I'll be using I couldn't make a decision.
Went on eBay this AM and found some Jaycar 3-Way crossovers from about 20 years ago [ 2004 catalogue says $57- each 200 watts and frequency divides to suit the old Tandy 2" dome at 1500 and 5k-.
It's a junk box why not use a junk XO? So I bought 2.
Near enough good enough?
I will need to put a zobel on the woofer but that's from stuff in the junk box and I finally get to re-use the old Tandy dome
They will make noise and if it's for parties, why not - after a few refreshments, they should sound fine!
Jaycar used to have some great gear, like their Vifa speaker kits which at one stage were being thrown out for about $200, cabinets and all. They were also selling the D25ag tweeters for $10 and the woofers for $20! Now, their drivers are rather dear compared to what else of better quality is around.
Geoff
Jaycar used to have some great gear, like their Vifa speaker kits which at one stage were being thrown out for about $200, cabinets and all. They were also selling the D25ag tweeters for $10 and the woofers for $20! Now, their drivers are rather dear compared to what else of better quality is around.
Geoff
You're open to modifications to the crossover if they are an issue. Sounds like DIY to me..
Woofer really needs a conjugate, doing party duty how long will it take to cook a 5W ceramic? Jaycar Geelong burnt down and I'm out of resistors in suitable value apart from two 5W and no large values in the stash to dubble up.
Yes I could buy on line but skinflint me doesn't want to spend $11- on postage for $5- of product
Yes I could buy on line but skinflint me doesn't want to spend $11- on postage for $5- of product
Hey there Moondog55,
Although you didn't actually spell it out, the Tandy 2" dome driver is a midrange.
The only problem with using these for a 'Party Speaker' is their slightly low efficiency - being roughly 89dB/1W/1M.
However, Tandy drivers always had a rather poor tolerance spec. around 15%, so there is a chance you've got some 'loud' ones.
Your project still sounds like FUN to me.
Although you didn't actually spell it out, the Tandy 2" dome driver is a midrange.
The only problem with using these for a 'Party Speaker' is their slightly low efficiency - being roughly 89dB/1W/1M.
However, Tandy drivers always had a rather poor tolerance spec. around 15%, so there is a chance you've got some 'loud' ones.
Your project still sounds like FUN to me.
Approximately 8R I have 8.2R in 5W and enough five watt resistors to knock up a series/parallel to give the correct value. Jaycar were a 5 minute drive away and the new Geelong store may not open for months yet. I wonder how much stock went up in the fire and how much was able to be salvaged.
MA it won't help that the two mid domes are different to each other either, but for a party speaker it may not make any difference,
This project is being driven by my neighbors. At dinner the other nite out on the new patio area besides the firepit I was asked why I didn't have music playing. As you may all know my "Party System" is a bit too big for gentle background music and I have all these spare drivers and bits of old boxes there.
@ MisterAudio, yep not really efficient but there should be a couple of dB boost from the second order XO at 1500, I'll make up for it with treble boost if I can
@ MisterAudio, yep not really efficient but there should be a couple of dB boost from the second order XO at 1500, I'll make up for it with treble boost if I can
That's my big system with killerwatts of power available.
I might be using one of my smaller amps for this and I don't think I've any polyswitches left in the stash.
I might be using one of my smaller amps for this and I don't think I've any polyswitches left in the stash.
I have owned 2 big houses and one small one.
And packed way way way too many people in the small house.
With some basic book shelf speakers.
We definitely got down to the party business.
More than what people expect a party speaker to be.
Actually the system woke up with a thrift store 12" powered
Sony sub.
Adding more bass made the nights wake up real good.
More than enough to peeve the neighbors.
People talk about 3000 watt subs for watching movies.
I dont get it.
I can rumble a house pretty good with a 12"
and not much power.
And were a good 60 to 80 people deep average.
Arm to arm peak with 130 people.
Basically need more air conditioner
than sound system at that point
And packed way way way too many people in the small house.
With some basic book shelf speakers.
We definitely got down to the party business.
More than what people expect a party speaker to be.
Actually the system woke up with a thrift store 12" powered
Sony sub.
Adding more bass made the nights wake up real good.
More than enough to peeve the neighbors.
People talk about 3000 watt subs for watching movies.
I dont get it.
I can rumble a house pretty good with a 12"
and not much power.
And were a good 60 to 80 people deep average.
Arm to arm peak with 130 people.
Basically need more air conditioner
than sound system at that point
They are getting less than 20dB more than 30 watts with the same extension, or 10dB more and a bit of extra LF extension, or no more output, but a lot more LF extension.
You could do the same thing with less power, but much larger boxes.
Something to think about. My party speakers all play outside, also while I do have a killerwatt of power available I probably only use 10 watts a channel. Inside the house it's a much lower power. but those sudden loud transients on classical music can really drive a speaker.
So I'll try 5W and see what happens
So I'll try 5W and see what happens
Well if I could find another pair at a reasonable price [ Not paying $50- like the current eBay auction I'm watching] I'd handle the power part by running MTM and using a small Mylar tweeter
I like the concept of an open-ended party speaker project. Aim for very good SQ. If some knucklehead overdrives them and destroys components, replacing them with junk box or used ones would be expected (but fuse the tweeters!).
Mister Audio,
What does the low voltage incandescent light bulb do for our expendable party speaker? Does it go on the woofer, and if so, parallel or series?
Paul
What does the low voltage incandescent light bulb do for our expendable party speaker? Does it go on the woofer, and if so, parallel or series?
Paul
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