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Low Volume Speaker [message #76083] Fri, 29 March 2013 20:01 Go to next message
Skua is currently offline  Skua
Messages: 6
Registered: March 2013
Location: Phoenix
Esquire
All

I have my heart set on building either a pair of 3pi or 4pi speakers, but I have one major requirement.

I currently live in an apartment where excessive volume is just not allowed. I currently have a pair of Cain and Cain 'Abbys' plus their corresponding 'Baily' sub-woofer which do not reach their full potential until I hit a volume level that is a little to much for the neighbors.

I have also gone the SET route and will be driving them with a 2a3, so efficiency is also a concern.

So my question is, which pi model '3' or '4' and corresponding drivers meet my main requirement of sounding good at low volumes (I do not plan to add any sub-woofers at this time)?

Thanks
Re: Low Volume Speaker [message #76084 is a reply to message #76083] Sat, 30 March 2013 02:03 Go to previous messageGo to next message
steve f is currently offline  steve f
Messages: 236
Registered: May 2009
Master
I would go 3PI because as good as the JBL woofers are, they need some power to "come alive" and that means higher volume settings. The 3PI gives up a bit of sensitivity to play at lower frequency.

Wayne just changed the upgrade path so only he has experience there. I built a basic stock pair and they are very nice. Another possibility is 2Pi towers. You will get good efficiency, an easy load for a SET amp, and bass response that doesn't require flanking subs. The tradeoff, and it does make a difference, is that it's not a controlled directivity speaker. Things like room reflections will have a greater effect that PI3 mid horns will control.

My wife usually works from home telecommuting and uses the 3PI's for low volume background jazz listening. I hope this info helps.
Re: Low Volume Speaker [message #76085 is a reply to message #76084] Sat, 30 March 2013 02:42 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18678
Registered: January 2001
Illuminati (33rd Degree)

Honestly, I am commuting these days and so I have a small stereo in my out-of-town apartment at the customer site. I'm running four π speakers on a small SET amp, and I don't even run subs. Sounds fantastic. Of course, I don't get the smoothing I'd get from blended flanking subs, but I don't have to worry about penetrating the complex with deep bass either. I find it to be very satisfying under these circumstances.

All of my larger loudspeaker models are voiced similarly, and really work best with subs, both for extension and modal smoothing. But they have deep enough bass response to be satisfying without subs too.

None of this takes away from what Steve said. He's right, and the shift in electro-mechanical characteristics between flea-power operation and even just ten watts makes a measureable difference. But it isn't like they are anemic sounding, even with just one watt. They still have strong, powerful sounding bass, especially compared with something like the Abbys.

Re: Low Volume Speaker [message #76087 is a reply to message #76085] Sat, 30 March 2013 07:09 Go to previous messageGo to next message
Bill Epstein is currently offline  Bill Epstein
Messages: 1088
Registered: May 2009
Location: Smoky Mts. USA
Illuminati (2nd Degree)
Here's another vote for 4 Pis as ideal apartment-house speakers and I'm mainly feeding them 1.8 Watts. Most of my listening is 40s and 50s Jazz: Count Basie, Clifford Brown, Dizzy Gillespie, etc., and my Parafeed 45 amp delivers distinct, altho' diminished, low E-String tones and kick drum.

The 100 Watt solid state amp I recently added does things in terms of tight-fisted bass control and dynamics the 45 can't, but I can listen at average 85 dB levels with the 45 and not have the Rozzers at the door.

My 2Pis, with the 45, less so with the 8 Watt Pentode-in-Triode single-ended amp, has kinda sloppy bass which is fine for Batman, not so good for Diana Krall Live In Paris. The 100 Watt Adcom tho', really controls the bass and makes them great music speakers, too.
Re: Low Volume Speaker [message #76088 is a reply to message #76083] Sat, 30 March 2013 10:16 Go to previous messageGo to next message
rkeman is currently offline  rkeman
Messages: 78
Registered: March 2010
Location: Florida
Viscount
The stock 3Pi is a fine loudspeaker at any volume level and can be used without subwoofers in most listening environments. Typical room gain allows extension to below 40Hz, resulting in a solid foundation for most music. Organ music, electronica and motion picture low frequency effects offer less impact than with good subwoofers in play, but such is life. Few listeners have experienced this good a speaker and most will never need a better speaker. The value is truly outstanding, especially in kit form.

The compression driver and midwoofer upgrades achieve performance that in most respects approaches state-of-the art. My thoughts on the previously recommended Acoustic Elegance TD12S midwoofer can be found in my 3Pi review (search the forum). Wayne can comment on the newly offered Eminence Definimax 4012HO midwoofer, but it looks like an excellent driver based on the manufacturers literature.
Re: Low Volume Speaker [message #76091 is a reply to message #76083] Sat, 30 March 2013 11:00 Go to previous messageGo to next message
Skua is currently offline  Skua
Messages: 6
Registered: March 2013
Location: Phoenix
Esquire
Thanks for all the input.

Looks like either the '3pi' or '4pi' will meet my requirements, Have still not quite decided an which direction to go, but I am getting closer.

From some of the comments it looks like I may have better results using a little more power than that supplied by my 2a3 SET's. I have a very nice reconditioned Dynaco ST-70 that has just been setting around gathering dust (the 2a3's sounded better on my 'Abbys'). Would this be a better direction to go especially if I chose the 4pi with the JBL drivers or maybe the 3pi with the Eminence Definimax drivers (the ST-70 may not make a difference with my low volume requirement)?

Also what about using my single 'Baily' sub-woofer to help fill in some of the missing bass (again this will not help my neighbors at low volume).

These speakers are for listening to music only. I love my Chicago Blues and Female Vocalists.

Thanks
Re: Low Volume Speaker [message #76099 is a reply to message #76091] Sat, 30 March 2013 16:56 Go to previous messageGo to next message
steve f is currently offline  steve f
Messages: 236
Registered: May 2009
Master
Whichever you choose, you absolutely can't lose. Please post your decision for the curious.

Steve
Re: Low Volume Speaker [message #76103 is a reply to message #76099] Sat, 30 March 2013 23:03 Go to previous messageGo to next message
Skua is currently offline  Skua
Messages: 6
Registered: March 2013
Location: Phoenix
Esquire
All

Ok made my decision, after carfull consultation with the MIS department (4 hours of begging and reminding her I have a birthday coming up) I am going with the 4pi and the JBL drivers and DE250's).

I will only be in this location for a couple of more years and someday I will be able to migrate the system into a more suitable location and then add some sub's.

I did have an internal debate with myself about the merits of getting the Eminence drivers initially and then doing an upgrade at a later date. My final decision is to build the cabinets now and by the time I am done I will have the extra dollars needed to purchase the upgraded drivers and a couple of crossover upgrades starting with the 15ga inductors, mill spec resistors and the Jantzen caps. I guess by now it would seem silly not to just go with the AuriCaps, but I have to watch my pennies somewhere.

Wayne, would it be possible to get a copy of the 4pi plans. Also is there any lead-time needed on ordering the 4pi kit and corresponding upgrades?

Thanks again for everyone's help and feedback.
Re: Low Volume Speaker [message #76107 is a reply to message #76103] Sun, 31 March 2013 11:24 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18678
Registered: January 2001
Illuminati (33rd Degree)

You've got mail! I've sent you the plans.

We maintain inventory in stock for all our kits and upgrade drivers. However, we do build the crossovers to order, which takes a week to ten days. We have a few assembled crossovers in stock, but in general, you should expect we'll asemble your crossover at time of order. But like I said, we have everything in stock, so you'll get your kits pretty quickly.

Re: Low Volume Speaker [message #76277 is a reply to message #76083] Thu, 11 April 2013 18:45 Go to previous messageGo to previous message
Skua is currently offline  Skua
Messages: 6
Registered: March 2013
Location: Phoenix
Esquire
Have lined-up a woodworking friend to help me make the '4pi' cabinets. We talked it over and decided to go ahead and also build a pair of 3pi subwoofers cabinets so that they will be ready to go when I decide to use them.

Wayne - would it be possible to also get a set of plans for the 3pi subwoofers.

Thanks
Herb
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