InfinityReference StandardusedInfinity Reference Standard RS II-B Vintage Ribbon Speakers with LF EQ, Near Perfect**Please be sure and check out our newly launched website with additional items for sale** These well regarded vintage Infinity speakers have one of the most un...2499.00

Infinity Reference Standard RS II-B Vintage Ribbon Speakers with LF EQ, Near Perfect [Expired]

no longer for sale

**Please be sure and check out our newly launched website with additional items for sale**

These well regarded vintage Infinity speakers have one of the most unique driver configurations out there. There are 3 ribbon midrange drivers radiating front and back, two forward tweeters and one rear facing tweeter, and 2 poly woofers. 

While these are not the most accurate speakers ever made, many connoisseurs love them for their musicality and ability to engage the listener. It is a full range speaker and is capable of deep bass. The controls on the back let you dial in all 3 frequency ranges to match your room listening position and taste. 

These beauties include a rare matching bass EQ, which as the manual states, must be used with this model to achieve a flat frequency response and to dial in the bass precisely. I have seen these speakers sold many times without the proper bass EQ, as many folks seem to misplace it during a move or as the speakers trade owners. 

Condition on these speakers is spectacular without a single noticeable dent or deep scratch. Quite the achievement for a speaker this size and age. Even the grills are perfect! I suspect this is because the original owner had them since new, and never moved them from their original installation location in his NYC apartment where we retrieved them. 

They were powered with a McIntosh MC-275 which provided ample volume and power, and is a great match for these fairly easy to drive speakers. 

Link to manual:


• Drivers: For each channel: Two 10-inch polypropylene woofers. Three EMIT tweeters, one facing rearward, and three EMIM midrange drivers

• Frequency Response: 29 to 32,000 Hz ±2 dB Suggested for use with amplifiers or receivers of: 60 through 250 watts per channel RMS

• Crossover Frequencies: 150Hz, 800 Hz, 4,000 Hz, and 8,000 Hz • Nominal Impedance: 4 ohms

• Finish: Hand rubbed oak veneers and solids • Dimensions: 48 inches x 22 3/4 wide x 18 deep (160.6 cm x 66.25 wide x 36.25)

• Shipping Weight: 200 lbs per system 

• Introduced in 1984

• Discontinued in 1987

• Original Retail Price: 2,700.00 S

EMIM Mid Rev. B/C .902...0012B
10” WFR Poly Clear .902...2279A (Substitute only)
EMIT Twt Sq/Blk .902...5086 Diaph Assy. Kit Tweeter .751...3722
EMIT Diaph. Assy. Midrange .751...3806


This item will be professionally packaged and insured for safe transit to your home.   

If we don’t have the original manufacture's packaging, we use heavy duty double ply corrugated boxes with Instapak expanding foam custom inserts.  In many cases this has proven to be better than the original packaging.  We also use high quality fiber reinforced tape to seal our packages.  Lightweight items will be bubble wrapped and shipped in a high-quality box. 

This item is available for pickup in Ridgewood, NJ or Union Square, NYC (with convenient parking in the building).

NJ Residents or anyone picking up without a resale certificate will need to pay NJ Sales Tax.

Use the Buy It Now button and we will cover the PayPal fees.

Thanks for looking and be sure to call or text 646.852.2073 with any questions. 

Please also be sure and visit our Audiogon e-store to see the rest of the items we have for sale

**And be sure to check out our newly launched website with additional items for sale**



Skyfi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of select high end audio equipment.  We only buy equipment the we admire and are passionate about. No mid-fi, no gimmicks, and no junk. 

Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold.  We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units.

Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project, and Sony ES, we have access to OEM parts, service, and support.  If you are local and are looking for any new equipment for the above-mentioned manufacturers, please drop us a line as we can arrange both sales and professional installation in the tri-state area


We do not accept or review any offers that do not go through the official Audiogon system. We have too many items for sale and its nearly impossible to keep track of offers outside of the official system. Please don’t message, email, or text any offers. 

If you do not see a “Make an Offer” button, it means we are not considering any offers on that item.   


We prefer working through PayPal, which allows you to use a credit card or bank transfer. We do not charge extra for any payment fees if you purchase the item at the asking price.  You can also send us a personal check (which will need to clear before shipping), certified check, money order, or wire transfer. International clients without access to PayPal should use a bank wire transfer. 

If you are picking up an item, we do not accept PayPal.  You must pay in person with cash, certified or bank check, or wire transfer.  If you make a PayPal payment and are picking up the item, it will be returned. 


We accept trade-ins of equal or lesser value under certain conditions.  Simply ask and let us know the exact model, condition, and the accessories that are included.  Such as the original box, remote, manual, etc.  We will only consider high-end equipment from mainstream manufacturers such as McIntosh, Mark Levinson, Audio Research, Krell, etc. and will typically pass on displays, projectors, receivers, dated processors, and mid-fi equipment of any type.  We will offer a fair value for your equipment, but keep in mind we are running a business and will need to be able to resell the equipment at a profit after investing a great deal of time and resources in testing, certifying, repairing, cleaning, and packaging the incoming equipment.  If you are looking for top dollar we suggest attempting to sell it directly to an end user on your own.

SELL US YOUR GEAR (Working or Broken)

We will also purchase your used or broken gear and arrange pickup if you are in our local market.  Just drop us a note for a quote but be sure to include the condition and what is included. 


We are currently operating from a residence in Ridgewood, NJ.  You are welcome to make an appointment if there is a piece of equipment you would like to see in operation before or after purchase.  We have a well-equipped, dedicated listening room with tons of equipment of all makes and models.  We are not a store, so please don’t make an appointment if you are just curious as to how a speaker or piece of equipment sounds.  In essence, no tire kickers please.

If you are in NYC and cannot make it out to Ridgewood, we can arrange pickup in Union Square (14th Street) after the purchase.   You can call or text 646.852.2073 with any questions or to schedule an appointment.  We can also arrange to install, calibrate, and tune the gear in your listening room if you are local to the area.  This is super useful when purchasing large speakers or heavy amplifiers.  It is also great for ensuring your new turntable is setup correctly in its final resting place.  

Thanks for looking and please send us your email address if you would like to receive a list of the equipment we receive from time to time.  We promise not to bombard you with junk email.   


skyfi member since January 2012  Verified Dealer
Last 12 months
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