I use a PK Neuses tone arm guage on the vertical players and digital for the horizontal ones.

If it's a 2510 i think the mono version still has the cobra cartridge in the 2500s doesn't it ?

Has it always sounded garbled ? Check the tone arm tracking pressure and also the vertical adjustment to make sure it's not pulling up or down. Don't make an adjustment willy nilly without checking everything first.

It could also be stiff tone arm cable and the trip switch being tight all causing the same problem, and if its been like this for years, it's likely to have worn the records, and all of these issues compounded will make it worse.

Also try selecting a record and immediately put the needle half way through, and check the garbled sound. Just in case it's an amp related issue that manifests itself after a few minutes of playing.

Nigel, uk

On 5 Sept 2025 at 23:13, Terry Teschner via Jukebox-list jukebox-list@lists.netlojix.com wrote:

Hi everyone!

I just bought a 2510 and I am having an issue. The 45 loads properly, and the record plays fine at the beginning, but starts to sound garbled the longer this plays.

Would this be needing a new needle, or a tone arm adjustment?

Just because I am curious, what tool are you using to measure needle pressure? The manual says to use a Graybar 70-D, but I can't find one of those anyware. Are you using digital VTF scales, and if so how do you use that when the record is vertical?

These are probably newbie questions, and that's because I am new to this.

Thanks for your help, Terry

-- Terry Teschner, RCDD/OSP/WD Infrastructure Design Engineer University of Minnesota Office of Information Technology Networking and Telecommunication Services 2218 University Ave SE Minneapolis, MN 55414 Phone: (612) 626-8229 Cell: (612) 369-5430 teschner@umn.edu _______________________________________________ Jukebox-list mailing list -- jukebox-list@lists.netlojix.com To unsubscribe send an email to jukebox-list-leave@lists.netlojix.com %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s Searchable Archives: http://jukebox.markmail.org/

On 9/5/25 15:12, Terry Teschner via Jukebox-list wrote:

Hi everyone!

I just bought a 2510 and I am having an issue. The 45 loads properly, and the record plays fine at the beginning, but starts to sound garbled the longer this plays.

Has the amplifier been rebuilt? If not, I would turn it off and not use it until it has been. Failing capacitors will cause distorted sound and eventually damage expensive tubes and transformers.

Would this be needing a new needle, or a tone arm adjustment?

Very unlikely.

Just because I am curious, what tool are you using to measure needle pressure? The manual says to use a Graybar 70-D, but I can't find one of those anyware. Are you using digital VTF scales, and if so how do you use that when the record is vertical?

P K Neuses N-10 spring gauge (AKA Western Electric 70F). The 70D is too stiff to measure 5 grams precisely.

http://www.pkneuses.com/www.pkneuses.com/spri.htm

Graybar can get them but is unlikely to stock them and they'll likely be pricey there. Victory Glass has them in stock. https://victoryglass.com/product/pk-neuses-cartridge-0-to-10-gram-gauge/