There are many who say the Sequerra Model 1 is the best FM tuner ever designed, and after hearing it, I think they may be right. This is the rackmount broadcast monitor version, in silver, apparently rarer than other variants of this already-quite-rare tuner. It receives well, the audio quality is fantastic, the CRT panoramic/tuning/vector display works wonderfully, and it is remarkably sensitive: the video showing reception of various stations was taken inside a steel building with the doors closed, and no antenna attached, just a balun. (I have tested numerous radios and FM tuners and have never found one that clearly received these stations in our building with the doors shut, even with an antenna.) We received this tuner in good condition, but it wasnt initially working correctly. It turned on, but the display indicated 189.3 MHz and would not change when tuned. Our technician, a retired EE, inspected, repaired, and improved it; his full notes are below. In summary, he: Repaired the -15v supply by replacing its shorted output filter capacitor, which fixed the tuning problemUsed Deoxit to fix intermittency on the left-side buttonsReplaced the LM301A op-amps with sockets, and plugged in a pair of TL071As (see photo) Replaced the leftmost display digit (an HP smart LED display module) with a spareFixed an unsoldered wire that seemed to be a factory defectReplaced all four #1815 incandescent panel lampsand fabricated a new smoked polycarbonate display panel with milled edges, to replace the original glass, which shattered during disassembly. (Having seen it both before and after the replacement, I can certify that it looks damn good.) The only significant flaws I can notice on the unit are as follows (see photos as well):Minor scuffs on the top rear and sides of the chassis, from ordinary use/installation/de-installationA scratch on the top of the faceplateScratches to the finish of the right-hand rack handle Minor de-lamination of the very bottom of the faceplate backlight diffuser, which is only visible if you look down into the Power and Dolby sections from above and in front.Included are: the original op-amps if you wish to swap them out, and a custom-built wooden shipping protector. Listing notes:Comes with 30-day returns.We can only ship items and respond to messages Monday through Friday, on business days.Please contact us immediately if you have any questions or if there are any issues.Technicians notes, verbatim: 6/23/23 Sequerra Model 1 FM tuner s/n 1117. Component date codes 1974. Belongs to Renew Computers. Display comes on, but is stuck on 189.3 and does not change with the tuning knob. I found the manual and made a jumper for the rear panel accessory jack which connects the tuning potentiometer output to the tuner control voltage input. That did not fix the stuck frequency, but the voltage range at the jumper was 7.2v to 32 volts, which matches what the manual indicates. The accessory jack also has the +15V and -15v supply voltages and the -15V pin read near zero. I removed the bottom cover and was able to find and fix the problem with the -15V supply; the output filter capacitor was shorted. It was an axial cap rated 350 uF 16 V. I replaced it with Nichicon PW, 330 uF 16V. That fixed the tuning problem, and the tuner worked with good clean audio output on both channels. Some of the control buttons on the left side are intermittent, particularly ones controlling the CRT display modes. I removed the button assembly and treated all of the contacts with Deoxit. Working on the buttons gave easy access to the left side circuit board so I removed the original LM301A output op amps and replaced them with high quality sockets, allowing a new owner to easily plug in whatever op amps they like. These op amps place limits on how good the noise and distortion of this tuner can be and much has been written about newer op amps with better characteristics and preferences among them. For now, I put in TL071A’s (see picture). The original LM301A’s are included and if for some reason those, or one of the other types requiring compensation caps are put back in, wire leads into the circuit board are provided so that can be done without having to remove the board. The left most LED display digit was intermittently malfunctioning, displaying either a 1 when it should be blank or vice versa, and occasionally other garbage characters. These are H-P display modules wit built in latch/decoder/driver chip. They are HP 5082-7302. I probed the input pins and proved that the problem was a faulty display module, not the counter circuitry upstream. I replaced it with one I had in stock. I noticed an unsoldered connection of a wire to a feedthrough terminal at one of the sealed units toward the rear of the tuner. This appeared to be a factory defect. I don’t know whether it caused any problems, but I soldered it. One of the #1815 incandescent panel lamps was burnt out, so I replaced all 4 of them with new ones. During the repair process, when the front glass panel was removed, it shattered. New ones are not available, so I made one from smoked polycarbonate plastic. It is the correct dimensions, has been milled on the edges, and is clean and pristine. This is now a clean and fully functional example of this rare and famous FM tuner!

DaySequerra is celebrating its 25th anniversary of the launch of its famed FM Reference by announcing an FMR 25 upgrade program for your tuner, available factory-direct for $3800. Overview The FMR 25 upgrade is designed to breath new life into every DaySequerra FM Reference by addressing head-on the two major challenges facing the 25 year-old high performance analog design: Limited life expectancy of its cathode-ray tube (CRT) display used for tuning and audio displays Reduced signal-to-noise performance caused by HD RadioTM OFDM sideband interference, commonly called HD Radio “self-noise”. Other electronic components typically effected by old age, such as incandescent bulbs are also replaced with more modern solutions to extend the FM Reference’s useful life. TFT to the Rescue. To replace the decades-old CRT display, DaySequerra engineers developed a synthesized VHDL file to configure a Xilinx Spartan 6TM Field Programmable Gate Array (FPGA). The analog IF and audio signals are digitized using a 64X oversampling TI Burr-Brown 24-bit, 96 KHz A-D converter; the FPGA then processes each respectively to provide the Tuning and Audio Vector displays. The user-selected display is output to high contrast 480 by 272 pixel ruggedized TFT display with a fast 20 mS response time. The resultant front panel display has more contrast than the original CRT and its blue trace compliments the DaySequerra timeless industrial design. Another benefit to eliminating the CRT is a substantial reduction in internal heat and electrical noise on the ground plane caused by the original high-voltage CRT drive circuitry. Professionally serviced by David Gill.

Here is an amazing and beautiful Vintage 1992 Day Sequerra DaySequerra FM Reference Audiophile Tuner in Box. Serial # 210336. Davidson Roth Corp. Spectacular piece from the original owner with low hours. It comes with the original owners manual and factory shipping box with inserts. Fully tested and it sounds amazing. Display is very ledgable and the faceplate is super clean as shown. Overall in excellent cosmetic and working condition as shown. This will make a wonderful addition to anyones collection. Money back guarantee you will not be disappointed. Click the Enlarge tab to view all pictures for details. I do not offer Buy-It-Nows and do not end my auctions early. Buyer to pay actual shipping of 39 lbs.

There are many who say the Sequerra Model 1 is the best FM tuner ever designed, and after hearing it, I think they may be right. This is the rackmount broadcast monitor version, in silver, apparently rarer than other variants of this already-quite-rare tuner. It receives well, the audio quality is fantastic, the CRT panoramic/tuning/vector display works wonderfully, and it is remarkably sensitive: the video showing reception of various stations was taken inside a steel building with the doors closed, and no antenna attached, just a balun. (I have tested numerous radios and FM tuners and have never found one that clearly received these stations in our building with the doors shut, even with an antenna.) We received this tuner in good condition, but it wasnt initially working correctly. It turned on, but the display indicated 189.3 MHz and would not change when tuned. Our technician, a retired EE, inspected, repaired, and improved it; his full notes are below. In summary, he: Repaired the -15v supply by replacing its shorted output filter capacitor, which fixed the tuning problemUsed Deoxit to fix intermittency on the left-side buttonsReplaced the LM301A op-amps with sockets, and plugged in a pair of TL071As (see photo) Replaced the leftmost display digit (an HP smart LED display module) with a spareFixed an unsoldered wire that seemed to be a factory defectReplaced all four #1815 incandescent panel lampsand fabricated a new smoked polycarbonate display panel with milled edges, to replace the original glass, which shattered during disassembly. (Having seen it both before and after the replacement, I can certify that it looks damn good.) The only significant flaws I can notice on the unit are as follows (see photos as well):Minor scuffs on the top rear and sides of the chassis, from ordinary use/installation/deinstallationA scratch on the top of the faceplateScratches to the finish of the right-hand rack handle Minor delamination of the very bottom of the faceplate backlight diffuser, which is only visible if you look down into the Power and Dolby sections from above and in front.Included are: the original op-amps if you wish to swap them out, and a custom-built wooden shipping protector. Listing notes:Comes with 30-day returns.We can only ship items and respond to messages Monday through Friday, on business days.Please contact us immediately if you have any questions or if there are any issues.Technicians notes, verbatim: 6/23/23 Sequerra Model 1 FM tuner s/n 1117. Component date codes 1974. Belongs to Renew Computers. Display comes on, but is stuck on 189.3 and does not change with the tuning knob. I found the manual and made a jumper for the rear panel accessory jack which connects the tuning potentiometer output to the tuner control voltage input. That did not fix the stuck frequency, but the voltage range at the jumper was 7.2v to 32 volts, which matches what the manual indicates. The accessory jack also has the +15V and -15v supply voltages and the -15V pin read near zero. I removed the bottom cover and was able to find and fix the problem with the -15V supply; the output filter capacitor was shorted. It was an axial cap rated 350 uF 16 V. I replaced it with Nichicon PW, 330 uF 16V. That fixed the tuning problem, and the tuner worked with good clean audio output on both channels. Some of the control buttons on the left side are intermittent, particularly ones controlling the CRT display modes. I removed the button assembly and treated all of the contacts with Deoxit. Working on the buttons gave easy access to the left side circuit board so I removed the original LM301A output op amps and replaced them with high quality sockets, allowing a new owner to easily plug in whatever op amps they like. These op amps place limits on how good the noise and distortion of this tuner can be and much has been written about newer op amps with better characteristics and preferences among them. For now, I put in TL071A’s (see picture). The original LM301A’s are included and if for some reason those, or one of the other types requiring compensation caps are put back in, wire leads into the circuit board are provided so that can be done without having to remove the board. The left most LED display digit was intermittently malfunctioning, displaying either a 1 when it should be blank or vice versa, and occasionally other garbage characters. These are H-P display modules wit built in latch/decoder/driver chip. They are HP 5082-7302. I probed the input pins and proved that the problem was a faulty display module, not the counter circuitry upstream. I replaced it with one I had in stock. I noticed an unsoldered connection of a wire to a feedthrough terminal at one of the sealed units toward the rear of the tuner. This appeared to be a factory defect. I don’t know whether it caused any problems, but I soldered it. One of the #1815 incandescent panel lamps was burnt out, so I replaced all 4 of them with new ones. During the repair process, when the front glass panel was removed, it shattered. New ones are not available, so I made one from smoked polycarbonate plastic. It is the correct dimensions, has been milled on the edges, and is clean and pristine. This is now a clean and fully functional example of this rare and famous FM tuner!

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

Unit is not working Selling as is for parts or repair only Plug in and some smoke come out see pictures Not powers on at all as is Please not return or refund will be accepted Everything on pictures are included We buy and sell we don’t do repair so please we try to describe our items our best possible Pictures are part of the description so please see them carefully and make your own conclusion about the item’s Thanks for looking selling as the pictures shown. WHAT YOU SEE IS WHAT YOU GET ABOUT SHIPPING Shipping Within US 48 Continental States Only (No shipping to Puerto Rico ,Alaska or Hawaii ) by Fedex Or USPS Ground according your location with free tracking number and It will be shipped thru the address provided by eBay so please make sure it's right during checkout! Feel free to any questions. About return Not return will be accepted as is ?????TOP SELLER ????? Thanks for your purchased • See other items in our eBay page!!

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

PLEASE READ ALL BEFORE BIDDING. If your shipping address is a PO Box, please select USPS as the shipping option, this is important.We offer multiple shipping options. Click on see details in the shipping estimate section to see all options. Excellent Day-Sequerra FM Reference.This unit is in excellent working condition.Unit was taken to a local professional Audio technician and tested for proper function.All contacts were cleaned during service.There are no signs of wear on the exterior.Unit will ship in its original, from-the-factory double-box and foam.Not shown is the original, thick, plastic bag which will be over the tuner for shipping.Includes instruction manual and power cord. If your shipping address is a PO Box, please select USPS option for shipping. ***We do our best to declare missing parts and items not included but occasionally we miss things. Included items shown in pictures. Not pictured, not included.*** We offer Combined Shipping: Please wait for invoice before paying for multiple bids.Make Sure To Look @ Our Other Listings & Happy Bidding !!! ReturnsWe do not do returns but we understand the eBay not as described policyWe do our best to fully describe every item that we sell to the best of our ability.Thank You

Day Sequerra FM Urban Antenna. Condition is Used. Doesnt look like much, but it is an excellent antenna. Shipped with USPS Priority Mail.

Wenn Sie von dem US Marktplatz bestellen, können für die Pakete Steuern und Zollgebühren anfallen, die der Käufer später tragen muss.Sequerra 1 Fm Tuner Review, 1975, Beste Tuner Ever? 3 PgDas Datenblatt dieses Produkts wurde ursprünglich auf Englisch verfasst. Unten finden Sie eine automatische Übersetzung ins Deutsche. Sollten Sie irgendwelche Fragen haben, kontaktieren Sie uns. Dies ist ein Nachdruck einer Audio-Rezension von 1975! Es enthält technische Daten, einen Test des Produkts und einen Kommentar zu den Funktionen und der Leistung des Geräts. Sehr selten und schwer zu finden! Ein Stück Audiogeschichte! Ich habe TAUSENDE Weitere Anzeigen und Bewertungen in meinem eBay-Shop. E-Mail mit allen Fragen, DANKE! -Suchen Sie links in meiner Store-Suchleiste nach einer Marke, die Ihnen gefällt. Ich habe fast jede beliebte Audiomarke!      -Seite ist 8,5 x 11 - Wie immer ist Ihre Zufriedenheit bei Electronics Archives GARANTIERT! Wenn Sie mit einem Kauf unzufrieden sind, senden Sie mir eine E-Mail und ich werde Ihnen eine Lösung oder eine Rückerstattung besorgen! - Schicken Sie mir bei Fragen eine E-Mail, ich stelle JEDEN TAG 10–20 neue Anzeigen und Broschüren auf meine Website!     DANKE SCHÖN!   Angetrieben von eBay Turbo ListerDas kostenlose Listing-Tool. Listen Sie Ihre Artikel schnell und einfach auf und verwalten Sie Ihre aktiven Artikel. Dies ist ein Nachdruck einer Audio-Rezension von 1975! Es enthält technische Daten, einen Test des Produkts und einen Kommentar zu den Funktionen und der Leistung des Geräts. Sehr selten und schwer zu finden! Ein Stück Audiogeschichte! Ich habe TAUSENDE Weitere Anzeigen und Bewertungen in meinem eBay-Shop. E-Mail mit allen Fragen, DANKE! -Suchen Sie links in meiner Store-Suchleiste nach einer Marke, die Ihnen gefällt. Ich habe fast jede beliebte Audiomarke!      - Wie immer ist Ihre Zufriedenheit bei Electronics Archives GARANTIERT! Wenn Sie mit einem Kauf unzufrieden sind, senden Sie mir eine E-Mail und ich werde Ihnen eine Lösung oder eine Rückerstattung besorgen! - Schicken Sie mir bei Fragen eine E-Mail, ich stelle JEDEN TAG 10–20 neue Anzeigen und Broschüren auf meine Website! Das k Brand Sequerra Type Paper Compatible Brand Sequerra

This is a reprint of an Audio Review from 1975! It will have Specs, a Test of the product, and Commentary around the features and performance of the unit. 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! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -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 1975! It will have Specs, a Test of the product, and Commentary around the features and performance of the unit. 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! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -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.