Just taken on trade. This is a rare device designed to be used with Allison speakers. It accentuates the bass to give the impression of deeper bass from his smaller speakers. He claimed it can be used w other brands as well. There are augmentation frequencies at 31, 41 and 45 hz. It has been thoroughly tested.

This product is an Allison Acoustics Nipple Dome tweeter with its original mesh coverThis was removed from a AL120 Speaker and was fully tested before removalThis auction is for only one tweeter (the one you see in the pictures)The diameter is just shy of 4 Fits various vintage Allison acoustics speakers.Measured the Ohm rating it measured 2.8 ohmsIt works Great! I ship USPS Ground Advantage so you should get your tweeter as soon as possible This will be carefully packaged also

Allison acoustics filter and bass equalizer. The Electronic Subwoofer. This is used and may show minor wear. Has NOT been tested. The power cord is included as shown.

This is a reprint of an original Review from 1983. Very rare and hard to find! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an original Review from 1983. Very rare and hard to find! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

ALLISON MODEL ONE, ADDITIONAL SHIPPING Allison One Cabinets Shipping Deficiency Thank you

These Allison 8 woofer grills were removed from an Allison 5 speaker cabinet. I havent repainted them - just cleaned them. They are the original black color and are perfect for any restoration job as there are no cracks or shipped edges.

These Allison 8 woofer grills were removed from an Allison 5 speaker cabinet. I havent repainted them - just cleaned them. They are the original black color and are perfect for any restoration job as there are no cracks or shipped edges.

These Allison 8 woofer grills were removed from an Allison 5 speaker cabinet. I havent repainted them - just cleaned them. They are the original black color and are perfect for any restoration job as there are no cracks or shipped edges.

220-240 Volt versionNOT suitable for North America I bought this, not knowing it was for 220/240 Volt systems. It has a standard North American type plug and 220-240V is in very small print. It did not work right in my system so I replaced all of the old capacitors. Still not right so I took it to a professional technician who discovered the fact that this is designed for 220-240 Volts. So if you are a an audiophile who lives in a country where the mains are 220-240Volts, 50-60Hz, this may be for you. Designed for Allison speakers but also appropriate for virtually any Acoustic Suspension speakers that could use a little bass boost. According to Allison, The equalization curves provided in the ESW are unlike those obtainable from conventional tone controls or general-purpose equalizers. Equalization is carried down to 20 Hz. . . . Only closed-box systems have response that falls off at 12dB per octave below resonance, and so only they are correctly equalized by the ESW. And only closed-box systems maintain control of the woofer at very low frequencies.

This product is an Allison Acoustics dome tweeter with its original mesh cover. The diameter is just shy of 4 Fits various vintage Allison acoustics speakers. Tinsel was repaired at one time however it works great. Reads 4ohms

Pair RA Labs Speakers 4A Reference by Roy Allison. Rare hard to find. 19 tall x 10 wide x 10 deep. 20lbs each. Made in USA. Tested, they sound great. The wood is in nice shape, grilles look good. 2 pegs that hold grille on broke off. The grille still stays on. They will be packed properly. Lots of bubble wrap in double wall box.

These Allison 8 woofer grills were removed from an Allison 5 speaker cabinet. I havent repainted them - just cleaned them. They are the original black color and are perfect for any restoration job as there are no cracks or shipped edges.

This is a reprint of an original Review from 1983. Very rare and hard to find! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an Audio Review from 1987! This review will have SPECS, COMMENTARY, DETAILS, and INFORMATION about the unit listed. You wont be dissapointed! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an original Review from 1983. Very rare and hard to find! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.

This is a reprint of an Audio Review from 1978! This review will have SPECS, COMMENTARY, DETAILS, and INFORMATION about the unit listed. You wont be dissapointed! A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo ListerThe free listing tool. List your items fast and easy and manage your active items.