Tedrick said:Newbie here, first post and all.
I've been an Infinity-phile since the 80's. I purchased a set of RS-4Bs in 1988. . . . I came across a one-owner pair of RS-IIIB's at a very attractive price . . .
Ok, you know . . .
:worthless
Tedrick said:Newbie here, first post and all.
I've been an Infinity-phile since the 80's. I purchased a set of RS-4Bs in 1988. . . . I came across a one-owner pair of RS-IIIB's at a very attractive price . . .
pacolam said:I have a pair of Renaissance 80
Kappa 5, RS 2000, RS 4000
Modulus (90's version)
They all bought from second hand shop
Tedrick said:Got a pair of Primus 360's today to go with the RS-IIIb's.
Pacolam, that is one fine collection. I really like the looks of the Renaissance 80's and the Modulus speakers.
Negotiableterms said:Pacolam - Wow, what a great collection!
You've got a pair of the 1990 Modulus, which were B rated in Stereophile. I'm interested to know what you think of them compared to the other larger Infinities?
Oh, and welcome to AK!!
Grainger49 said:Are you sure you don't run a shop?
Aha! So I'm not alone in this, though I never thought that I'm the only one who can hear incorrect phase between drivers. The midbass drivers on my Quantum 2s are supposed to be connected out of phase according to the crossover schematics, but the sound in this frequency region is very off compared to my other very good speakers (Tannoys, Magnepans, etc). When I connected the midbass driver to the correct phase both according to the wires and to observed cone motion, the sound is much improved. Yet, others were not at all hesitant to proclaim my change to be incorrect.pacolam said:RS 4000, the woofer is good, the emit is excellence, but the midrange unit sounds not match each other, finally I found a reason why. The sound and the phase (+ -)of mid driver unit, is opposite to the emit and woofer, I try to change (- +) and reconnect it, is much better then before. But Modulus still better because of the difference quality.
I check the inside connection of RS 4000, the wire connection colour is right, nothing wrong but the midrange comes out opposite phase sound in right connection, I don't know why?
I found some strange things of some Infinity models too, the phase are not all correct in each driver units, even I check the inside connection, it seems right, the sound of all driver unit come out are not in the same phase together, so I need to check and reconnect the oppsite(wrong) one.
Interestingly, my Q2s are a very early pair (one off from those pictured in the brochure) and were connected opposite to the schematic, only the later variations were connected out of phase as I discovered in my mirror-imaging project.I like the looks of RS IIIb's too, the colourless woofer can see inside and the wood is still very trendy even today. Also they have the Infinity's outstanding drivers - emit tweeters.Tedrick said:Got a pair of Primus 360's today to go with the RS-IIIb's.
Pacolam, that is one fine collection. I really like the looks of the Renaissance 80's and the Modulus speakers.
Charivari said:Pacolam, welcome to AudioKarma! Like the others have hinted at, your collection makes us jealous while making you fit right in.
Aha! So I'm not alone in this, though I never thought that I'm the only one who can hear incorrect phase between drivers. The midbass drivers on my Quantum 2s are supposed to be connected out of phase according to the crossover schematics, but the sound in this frequency region is very off compared to my other very good speakers (Tannoys, Magnepans, etc). When I connected the midbass driver to the correct phase both according to the wires and to observed cone motion, the sound is much improved. Yet, others were not at all hesitant to proclaim my change to be incorrect.Interestingly, my Q2s are a very early pair (one off from those pictured in the brochure) and were connected opposite to the schematic, only the later variations were connected out of phase as I discovered in my mirror-imaging project.
I say, connect the drivers how they sound best, though preferably so everything is properly in phase. Manufacturers are not immune from messing up their wiring (Bozak was notorious for mislabeling the midranges in their 302As making for most units being connected out of phase), so if they sound better to you connected in opposition to the schematic, then so be it. Frankly, I believe the schematics and subsequent wiring to be a marketing gimmick -- makes them sound more exciting in the short term and makes for artificial imaging, such as with the Wilson WATT/Puppy 7 -- and have no quarrels with making the change.
- JP
totem said:I just brought home a pair of Infinity RS 2.5,s but it may be a while till they get into use due to amp search is on going!! :yes:
Negotiableterms said:Hopefully, someone here can tell you just how low the RS 2.5s really go in the bass range. 2 ohms would not surprise me, so you need a very robust amp!
RAzOR said:I read in a German review that the RS-IIB's are 1.4 Ohm at 40Hz. Maybe they are similar.