Home » Sponsored » Pi Speakers » 8 years later
8 years later [message #93455] Fri, 09 April 2021 12:07 Go to next message
panduro is currently offline  panduro
Messages: 18
Registered: March 2013
Location: denmark, european union
Chancellor
Been a dream of mine to build pi7's for many years now, but life has gotten in my way of that until now...

Back in 2013, I got the build plans for them, so only question is, are the pi7 build plans the same or have they changed?

Crossover, gaskets and midhorn pack has been ordered from Wayne.

B&C DE250, Eminence Alpha 10, are in boxes on my desk. Regarding woofers, I have 4 JBL 2225h, I Seem to remember reading at some point that Wayne wrote that they are a exchangeable with the 2226h driver? I am hoping to use 2 of Those if that's the case, if not I'll bite the bullet and purchase 2 2226h.


Best regards

Ben
Re: 8 years later [message #93456 is a reply to message #93455] Fri, 09 April 2021 12:24 Go to previous messageGo to next message
compaddict is currently offline  compaddict
Messages: 78
Registered: April 2014
Location: Auburn, CA USA
Viscount
Nice!!
Re: 8 years later [message #93466 is a reply to message #93456] Fri, 09 April 2021 17:59 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18128
Registered: January 2001
Illuminati (33rd Degree)

You can use 2225H in the seven Pi bass bin. Can't use 'em in the four Pi model though.

I'll send plans to make sure you have the latest. Check your email inbox.
Re: 8 years later [message #93504 is a reply to message #93455] Mon, 12 April 2021 10:23 Go to previous messageGo to next message
panduro is currently offline  panduro
Messages: 18
Registered: March 2013
Location: denmark, european union
Chancellor
Awesome that my Old 2225h's are usable.

I havent recieved new pi7 plans.

Best regards Bent

Re: 8 years later [message #93515 is a reply to message #93504] Tue, 13 April 2021 09:16 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18128
Registered: January 2001
Illuminati (33rd Degree)

Resending the plans now.
Re: 8 years later [message #93518 is a reply to message #93455] Tue, 13 April 2021 15:18 Go to previous messageGo to next message
panduro is currently offline  panduro
Messages: 18
Registered: March 2013
Location: denmark, european union
Chancellor
Thx Wayne, plans are received Smile

I'll make a build post when I start making sawdust.

Bent
Re: 8 years later [message #94290 is a reply to message #93455] Fri, 20 August 2021 12:27 Go to previous messageGo to next message
panduro is currently offline  panduro
Messages: 18
Registered: March 2013
Location: denmark, european union
Chancellor
Making sawdust and screwing up Embarassed Embarassed Embarassed

I fucked up when I picked up wood and didn't figure it out til too late, really nice quality Finnish Birch ply... but accidently bought 0.8267" instead of 0.75" thickness. The only panel I haven't glued in is the speaker baffle.

Options:

1/ The baffle that I've already cut fits in between the sides. It will however make the enclosure 2.5L/0.09ft3 smaller than in the plans. Should I change the port length so it get's back to the original 37Hz tuning or is that a pointless endeavour?

2/ Buy a bit more wood and cut a new one that will fit on the sides. That will make the cabinet 4.5L/0.16ft3 bigger than in the plans. The extra volume I can use for extra bracing.

But does the extra 2.1cm/0.82 inch the woofer will be closer to the corner make a negative difference?

Best regards

Ben
Re: 8 years later [message #94292 is a reply to message #94290] Fri, 20 August 2021 15:07 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18128
Registered: January 2001
Illuminati (33rd Degree)

I think you'll be OK on that one. Some changes in some speakers are more problematic than others. But in your case, the bass bin is already overdamped enough that slight shifts won't push the alignment into a peaky configuration. And the cabinet doesn't get any higher frequencies, so standing waves aren't an issue. This all makes me think that very small change in volume won't hurt you much if at all.

Carry on!
A little progress... [message #94431 is a reply to message #93455] Tue, 14 September 2021 15:22 Go to previous messageGo to next message
panduro is currently offline  panduro
Messages: 18
Registered: March 2013
Location: denmark, european union
Chancellor
Thx Wayne, that wasn't the answer I was hoping for.

Been making sawdust when possible, this is current status... I've done most of the rough work on one speaker.

Attached a picture just for show.

Speaker baffle, vent, Bracing of bas enclosure, wiring, sanding still pending...

When I'm Done with that I'll build second speaker, external crossover cabinets with Speakon connectors.

Paint hasn't been decided yet.

I will be back when there's progress worth showing.

Panduro


/forum/index.php?t=getfile&id=2849&private=0
Re: A little progress... [message #94434 is a reply to message #94431] Tue, 14 September 2021 19:38 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18128
Registered: January 2001
Illuminati (33rd Degree)

Lookin' good! https://audioroundtable.com/images/thumbs-up.gif
Previous Topic: Yet another 4PI plans request
Next Topic: 4pi build with stands finally realized
Goto Forum:
  


Current Time: Fri Sep 24 10:35:15 CDT 2021

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Smith & Larson Audio
Smith & Larson Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest