Please Post your Infinity speakers

Here is my Infinity RSe set. I inherited them from my father-in-law, and did refoaming myself. They sound great. I listen to them every day while working.

Hello, new to the forum.
I have a pair RSII speakers that have been modified with focal kevlar midranges.

I think this counts for the thread....




Infinity Primus 362 - sort of - modified to the extreme.

This was posted, at much earlier progress a while back - but now near completion, I think it's time to post again. One more post will be made, showing extensive measurements, later.

Koa wood veneer applied - original vinyl removed. Kept front original silver gloss paint finish at customer's request. Original customer is Matt34 on this forum. It has since been sold twice (before completion) due to logistics (original owner had to move out of country - 2nd owner was offered an extra $1000 profit to sell to 3rd owner that wanted the speakers even more, apparently....).

Internals radically modified (top 1/2 added 0.165 " Dynamat-type material and 0.5" in fiber re-enforced concrete, to form a highly effective constrained layer system. 1.2" thick oak braces added every 3-4" internally, in every axis. Bottom 1/2 of cabinet has 2.25" thick MDF with 0.75 steel square bar adhered in the core of the MDF every 4", going from front to back, Z axis. Extensive oak ribbing is on the front baffle, from top to bottom, internally. Tweeter replaced with Fountek ribbon driver with radically superior high frequency dispersion. Twin 6.5" mid-bass drivers high passed at 80Hz, and JL Audio 8" W7 driver in sealed chamber takes over, down to 35Hz -3dB point(response limited with signal processor, to allow for large dynamics). 8" W7 actually produces more clean SPL than most good quality conventional 12" subwoofers, and only exhibits 1 dB of compression with 500 watts input test signal vs. 1 watt baseline. The twin 6.5" midbasses allow for substantial lower midrange dynamics. Crossed at 400Hz to the mids, this transition is purposely located at frequency where almost all music reduces total acoustic power by at least 1/2, going over this frequency. Allows mid to match up with the dynamic capability of the mid-basses. In addition, baffle step is roughly just over this point, and further re-enforces the output of the mid-range by 3-4 dB over most of it's bandwidth. Weight is multiplied several times over stock 37lb weight. Have not weighed yet, but estimate is in the 130-160lb each range, and this is a relatively small tower speaker.

Passive crossover scrapped. Active 4 way is the new x-over type used here. A Behringer DCX2496 coupled with a Behringer CX2310 to further add ability to actively do 4 way (CX2310 only crosses at 80Hz from sub to mid-bass handover).

Designed to be absolute, reference quality speaker system, with extensive dynamic capability, in a compact form. No resonance in any form shall be audible in this system, and off axis response shall be substantially superior to normal monopolar speaker systems. Despite the budget price, the original mid-range driver is actually suitable for just about any level of speaker system, surprisingly. The mid has relatively low distortion, and it's energy decay is without par. It's first break up mode is over 10kHz for this 4" driver. The extremely thick anodization process used here (40% of the total diaphragm thickness has been anodized, as compared to normal thin surface treatment) increased stiffness and pushed up the break up mode substantially, compared to the average metal driver of equal diameter. This allows me to operate the mid and midbasses in completely pistonic bandwidth for their used passband and keep break up mode far above crossover frequencies. Resolution of system is equal to the best planar or electrostatic systems due to this combined with the inert cabinet construction. Interior acoustical absroption material used is 6 lb/ft^3 high density mineral wool board. This allow for effectively total removal of all unwanted reflections/reflection(s) not desired in the closed box system, unlike many common materials such as polyfill, common 'acoustic' foam or regular density 'fluffy' fiberglass. Front port is not active. It is a dead end. Left front of port intact since original front finish was to be preserved.

Just now completing xover design/programming after 3rd owner has secured rights.

Here is a basic OEM vs. modified diagram plan - not quite to scale on the new sides - actual new sides are much larger as compared to as illustrated in the diagram - but otherwise accurate. Pay close attention to materials legend.

http://www.linaeum.com/productinfo/other/infinity_primus362_ultra/modification_diagram.gif

-Chris

WmAx said:

Infinity Primus 362 - sort of - modified to the extreme.

This was posted, at much earlier progress a while back - but now near completion, I think it's time to post again. One more post will be made, showing extensive measurements, later.

Koa wood veneer applied - original vinyl removed. Kept front original silver gloss paint finish at customer's request. Original customer is Matt34 on this forum. It has since been sold twice (before completion) due to logistics (original owner had to move out of country - 2nd owner was offered an extra $1000 profit to sell to 3rd owner that wanted the speakers even more, apparently....).

Internals radically modified (top 1/2 added 0.165 " Dynamat-type material and 0.5" in fiber re-enforced concrete, to form a highly effective constrained layer system. 1.2" thick oak braces added every 3-4" internally, in every axis. Bottom 1/2 of cabinet has 2.25" thick MDF with 0.75 steel square bar adhered in the core of the MDF every 4", going from front to back, Z axis. Extensive oak ribbing is on the front baffle, from top to bottom, internally. Tweeter replaced with Fountek ribbon driver with radically superior high frequency dispersion. Twin 6.5" mid-bass drivers high passed at 80Hz, and JL Audio 8" W7 driver in sealed chamber takes over, down to 35Hz -3dB point(response limited with signal processor, to allow for large dynamics). 8" W7 actually produces more clean SPL than most good quality conventional 12" subwoofers, and only exhibits 1 dB of compression with 500 watts input test signal vs. 1 watt baseline. The twin 6.5" midbasses allow for substantial lower midrange dynamics. Crossed at 400Hz to the mids, this transition is purposely located at frequency where almost all music reduces total acoustic power by at least 1/2, going over this frequency. Allows mid to match up with the dynamic capability of the mid-basses. In addition, baffle step is roughly just over this point, and further re-enforces the output of the mid-range by 3-4 dB over most of it's bandwidth. Weight is multiplied several times over stock 37lb weight. Have not weighed yet, but estimate is in the 130-160lb each range, and this is a relatively small tower speaker.

Passive crossover scrapped. Active 4 way is the new x-over type used here. A Behringer DCX2496 coupled with a Behringer CX2310 to further add ability to actively do 4 way (CX2310 only crosses at 80Hz from sub to mid-bass handover).

Designed to be absolute, reference quality speaker system, with extensive dynamic capability, in a compact form. No resonance in any form shall be audible in this system, and off axis response shall be substantially superior to normal monopolar speaker systems. Despite the budget price, the original mid-range driver is actually suitable for just about any level of speaker system, surprisingly. The mid has relatively low distortion, and it's energy decay is without par. It's first break up mode is over 10kHz for this 4" driver. The extremely thick anodization process used here (40% of the total diaphragm thickness has been anodized, as compared to normal thin surface treatment) increased stiffness and pushed up the break up mode substantially, compared to the average metal driver of equal diameter. This allows me to operate the mid and midbasses in completely pistonic bandwidth for their used passband and keep break up mode far above crossover frequencies. Resolution of system is equal to the best planar or electrostatic systems due to this combined with the inert cabinet construction. Interior acoustical absroption material used is 6 lb/ft^3 high density mineral wool board. This allow for effectively total removal of all unwanted reflections/reflection(s) not desired in the closed box system, unlike many common materials such as polyfill, common 'acoustic' foam or regular density 'fluffy' fiberglass. Front port is not active. It is a dead end. Left front of port intact since original front finish was to be preserved.

Just now completing xover design/programming after 3rd owner has secured rights.

Here is a basic OEM vs. modified diagram plan - not quite to scale on the new sides - actual new sides are much larger as compared to as illustrated in the diagram - but otherwise accurate. Pay close attention to materials legend.

http://www.linaeum.com/productinfo/other/infinity_primus362_ultra/modification_diagram.gif

-Chris

Click to expand...

:jawdrop: Bravo!

Interesting, That pic in the middle with all the SAE amps was posted on craigslist selling the RSIIb's. I contacted him and he said he was selling those speakers and I asked him about the amps and if he was going to sell them. He stated that the amps were just a pic he took off the web. I wonder if it was a scam? Or he might not have taken real pics of his speakers and just used that pic. I have seen that one pic on the web many times with the dual bass towers as well, maybe on Jims SAE site. I thought about putting both my sets of RS-1 bass towers together with the mid panel but then what good would my other set of mid-high towers do me. I don't lack any bass anyway with the single set of bass towers. I would rather have a mid-high tower with a whole row of EMIT's and maybe a few SEMIT's in it.

mine are RS4 b's....2 pair reference four mini towers and reference one bookshelf pulling computer duty through Realistic STA-95....yea yea I know....but I love these old Realistic....got 3 of em

Infinity Speakers

1st pair were my 2000a's, followed by the 1001a's. Then picked up the 5000's and refoamed the woofers. RSb's came next and refoamed the woofers recently. Like the RSb's best followed by the 1001a's. All are in excellent to near mint condition. Working on getting a pair of Quantum 5's next.

AndreiR said:

Here is my Infinity RSe set. I inherited them from my father-in-law, and did refoaming myself. They sound great. I listen to them every day while working.

Click to expand...

I had RSe and assuming the crossovers were average i.e. working O.K., the sound is pretty dead compared to the larger RSa and RSb, in case you wanted to try any other models. RSa seem to go for about $100 and RSb about $150 in good shape.

I'm just tickled with my freshly acquired RSb from Seattle CL. As nice as I could hope to find, and from the original owner. Man the bass from these "bullet" woofers is so fast and tight. I think I'll change the crossover caps since they must be shot after 30 years.

mywifespissed said:

I had RSe and assuming the crossovers were average i.e. working O.K., the sound is pretty dead compared to the larger RSa and RSb, in case you wanted to try any other models. RSa seem to go for about $100 and RSb about $150 in good shape.

I'm just tickled with my freshly acquired RSb from Seattle CL. As nice as I could hope to find, and from the original owner. Man the bass from these "bullet" woofers is so fast and tight. I think I'll change the crossover caps since they must be shot after 30 years.

Click to expand...

Thanks, mywifespissed. I wouldn't describe it as dead sounding (but a plastic skull is sitting on top of it just in case ) I'll keep an eye on those RSa/b. Who knows what the next trip to SA would surprise me with... For now though my RSe serve their purpose, which is pretty much listening to a classical radio station on low volume (while working). As I understand, RSa/b's are quite bigger -- I don't know if I 'm ready to spare any desk real estate for those... I also have a pair of small advents that I need to refoam, and a pair of AR TSW-410 that serve as stands for my NewLrg Advents (also have to be refoamed, but maybe they should just stay there -- they look good as stands... ).

Nice setup! Is that a NAD cdp you have there? What model is it?

the original brochure of RSe:

AndreiR said:

Thanks, mywifespissed. I wouldn't describe it as dead sounding (but a plastic skull is sitting on top of it just in case ) I'll keep an eye on those RSa/b. Who knows what the next trip to SA would surprise me with... For now though my RSe serve their purpose, which is pretty much listening to a classical radio station on low volume (while working). As I understand, RSa/b's are quite bigger -- I don't know if I 'm ready to spare any desk real estate for those... I also have a pair of small advents that I need to refoam, and a pair of AR TSW-410 that serve as stands for my NewLrg Advents (also have to be refoamed, but maybe they should just stay there -- they look good as stands... ).

Nice setup! Is that a NAD cdp you have there? What model is it?

the original brochure of RSe:

Click to expand...

Yea, the RSa and b are a lot bigger. And must weigh 40 or more lbs. each. The CDP is the 540 from around 8 years ago. It's dying. Wont track or even register CDs most of the time. If I lift the front and drop it an inch it will track then work. I'm replacing it with a Naim CDX this Saturday. A friend is selling his for a great price as he's out of audio now.

mywifespissed said:

If I lift the front and drop it an inch it will track then work. I'm replacing it with a Naim CDX this Saturday. A friend is selling his for a great price as he's out of audio now.

Click to expand...

I had the same problem -- and the same solution -- with my Pioneer CDP, which I eventually took apart and gave the cool shiny parts to my son to play with (he loves that kind of stuff).
Naim CDX must be good. I noticed it has an interesting tray opening. :thmbsp:

Just got the RSIIs yesterday.

I have the RS5, RS3, CC3, QPS1 for my HT.

AndreiR said:

I had the same problem -- and the same solution -- with my Pioneer CDP, which I eventually took apart and gave the cool shiny parts to my son to play with (he loves that kind of stuff).
Naim CDX must be good. I noticed it has an interesting tray opening. :thmbsp:

Click to expand...

The CDX is all I will ever ask from digital. It does it all right.

Here's a pic of my most recent Infinitys. I nice set of Column II's from 1974-76. They came with the original glass tops. I refinished the cabs with wood rejuvinator and beeswax and had to refoam all 4 10" woofers but t was well worth the effort. I like them as well, if not more than my RS4's.

Just picked up some RS3000's in need of refoaming to add to my reference threes.




Cover's have seen better days..

IRS Epsilon

Same set up for more than 13 years: IRS Epsilon driven by a pair of Krell KSA 200S + KRC HR as preamp and I am not considering changing it before long...

Just pulled my RS6001's from the garage and hooked them up. These don't compare to many of the Infinity speakers in this thread, but they sure sound good! The cabs are in rough shape, but I plan on tearing these down, cleaning them up and possibly rebuild the crossovers. I would also like to do something with the cabs, either paint them black or use something like Band-it veener.

Nice Yamaha amp!!!

Sir.Byrd said:

Nice Yamaha amp!!!

Click to expand...

Thanks! It rocks

Xtinc said:

Just pulled my RS6001's from the garage and hooked them up. These don't compare to many of the Infinity speakers in this thread, but they sure sound good! The cabs are in rough shape, but I plan on tearing these down, cleaning them up and possibly rebuild the crossovers. I would also like to do something with the cabs, either paint them black or use something like Band-it veener.

Click to expand...

+1 :thmbsp: for your Yammy! Don't discount your 6001's, I bet they sound excellent. Never seen that model before. I vote for veneer, would be a shame to make 'em look like typical HT speakers!