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this may be a defective LED issue , if you're the 1st owner of the unit , the warranty is 5 years full , get in touch with your Dealer , let them troubleshoot the problem with Klipsch Technical Support .

the 2nd sub must only be connected to the SUB OUT jack , if you're using a wireless sub , plug the wireless transmitter into the "SUB OUT" -if all fails, the unit has a hardware defect . https://support.klipsch.com/hc/en-us/articles/360046083192-Bar-48-Adding-a-Second-Subwoofer

the Midrange horn of the Forte III -IV are identical , the Forte IV kit will reuse the Forte III horn with a new MF driver .

GLWYS , the speaker is in excellent condition .

you' re getting interference from the Antenna , there 's nothing much that you can do other than not use the speakers with this Antenna .

no problem , you 'll just use less power , bass may feel punchier .

The Chorus series cannot compare with CF series , basically , these are 2 very different speaker designs . Chorus is a 3 way conventional bass reflex 15 inch speaker while the CF series feature Neo magnet drivers in a 2 way D'Appolito design , problem is , there are no replacement parts for the CF Neo magnet drivers , but Chorus parts are plentiful

Step 1 - do a Factory Reset ▶️ https://support.klipsch.com/hc/en-us/articles/360044128312-Bar-48-Factory-Reset Press and hold the Power and Source Select buttons simultaneously for a full 10 seconds. Once complete, you will see the source LED light on the front of the bar turn Orange with three white LED's on top of it VIP -Performing a factory reset will clear all user paired devices. They will need to be re-paired after the reset is complete Step 2 -Update the Firmware ▶️ https://support.klipsch.com/hc/en-us/articles/360043401632-Bar-48-Firmware-V30-V83a-Update-Instructions

difference is the II at the end , same specs https://www.klipsch.com/products/rp-8000f-floorstanding-speaker-refurbished

something is odd with the copper badges , are the 2 badges identical ? or different

here 's a thread with a 1966 H700 Ser# 1D101 - therefore 2D121 = 1966 based on accurate Klipsch manufacturing codes

gone

Klipsch Parts will sell em to you at a decent price

given the poor condition of the grilles , screws with seated nylon washers can straighten the masonite , here is a picture of the Pro Klipsch speakers , the grille is straight as an arrow .

Klipsch tech support can be reached online ▶️ https://support.klipsch.com/hc/en-us

measure the woofer diameter , 15 inches is a Chorus , 12 inches is a Heresy or Forte

▶️ only way to find out if the plate amplifier is defective is for a tech to swap out a new plate amplifier onsite or send the unit in for repair for other parts issues , ▶️ open a warranty claim or seek tech support online , keep a copy of your sales receipt handy https://support.klipsch.com/hc/en-us/categories/360002860032-Warranty-Claim

Good luck with the K-10-K sale

AK-5 Serial numbers 10270001 & 10270002 were made in 2010 ,the PWK Pie plastic badges are glued with peel n' stick 3M double sided tape

the PWK plastic Pie badges should be at the left and right if the serial numbers are consecutive and the badges were installed by the factory . -in some cases , the badges were left by klipsch un-installed in a plastic pouch on the sides of the top hat .

Watco rejuvinating oil is 70% VOC's / Pretroleum chemicals + 30% linseed oil https://www.rustoleum.com/product-catalog/consumer-brands/watco/rejuvenating-oil -There is an all natural product with 0 VOC's or chemicals ....Trade Secret https://tradesecret.ca/furniture-polish-cleaner/

you'll have to match the factory cherry veneer with the collar panels

- 24 V left - 5 V right - GND black cable, - VDD white cable - STB red cable - 5 Volt side - the white cable + smaller plug red cable together

yes , it would sound more open , however the screws + the outer section of the horns would be apparent requiring a set of grilles to hide the K-400 casting

none , klipschorns Type B ( deluxe )- C ( standard ) -D ( economy ) perform equally , except for the appearance