No sound from record

[didier]

Hi to all

I have a Row Ami Jan Diplomat.

I still have a little problem to solve.

When I play a record , no sound goes to the speakers.

I've tested the amp and he is working. When I connected a external source to te amp it gives sound to the speakers.

But when I play a record , I don't hear sound from that record. Could that be the cartridge that is broke?

What can it be? Help is verry welcome.

Also another question: Can I put new speakers in with 4 ohms independence. Will they produce sound?

Many thanks for all replys.

Greetings

[Ron Rich]

Hi Dider,
First look at the needle, and the wiring from the cartridge to the amp. If that's all OK--yes, you have a bad cartridge ( not very common in that model phono)
Why do you want to install "new" speakers ??

[Hildegard]

Next to what Ron said: Doesn't the JAN Diplomat use Shure M77 cartridge? We get requests for replacements once in a while.
But I don't know what the problem in this specific cartridge is.

Hildegard

[Ron Rich]

Hi Hildegard,
I know it uses a Shure cart. --don't know which one ? Like Pickering's from the Red Head model on, Shure's have all of the "working parts" in the needle housing. If the coil(s) are good, the cart. "hasta" work. Ron Rich

[Hildegard]

From what I know Shure M77 was used from JAL resp. JEL to JAO. Shure M44 was used after that starting with MM1.
Rock-Ola also used the Shure M77 for a short time and then changed to M44.
Maybe the coil/s in M77 are not for a long time use. Or the wiring itself.

Hildegard

[didier]

hello Ron and Hildegard

Thanks for the tips.
Ron, I maybe want to replace the speakers in the Row Ami to have a better sound (the loudness is more than ok).
Can I put stereo speakers 4 ohms instead to replace the original speakers 8 ohms? Is this possible?

I looked at the tonearm and saw that the cartridge was turned around. The cable was a little bit to short I think.
I bought another tonearm with good cables. I will instal it an hopefully it works.

I let you know when I fixed it.

Many thanks

[Hildegard]

Hello Didier,

If I know right on model JAN the tone arm is left hand of the TT - and the cartridge is mounted turned around to be in right direction for playing.
When the tonearm wire is too short, maybe somebody tried to repair but did not make it right. A new wire could be installed.

Regarding the speakers: Ron will be able to answer that question better than me. But before replacing the old ones because of a not so good sound, please allow a question. Was the amplifier overhauled already? If not I would start with that. A bad amp will cause many sound distortion. New speakers in that case would not bring any improvement. Loundness by itself is not the only point to judge the function of an amplifier.

If you have the opportunity to test the speakers with another for sure working amplifier, you might want to try that first. So you would know if the speakers cause the problem.
If they will result fine, I would not replace them. Because they match the amplifier most.

Hildegard

[Ron Rich]

Hi Dider,
As Hildegard stated the speakers in a jukebox are designed to match the amplifier--and the cartridge--and the cabinet. 99% of the time they will "last forever". IMHO, IF, they should get damaged, it is usually better to have them re-coned, by someone who knows how to do it, correctly ! On an AMi/Rowe. if the tone arm is on the left of the turn table, the cartridge should be mounted with the wires facing the outside, of the tonearm !
Ron Rich

[amiman66]

Hello Dider,

I agree there is no point replacing the original speakers unless they are damaged.
With regards to the impedance of the speakers. the 12 inch bass speaker is 16 ohms and the two mid-range should be 4 ohms.

Regards
Alan

ami-man
UK

[didier]

Hello to all

First of all , many thanks again for the quick reply and answers.

Indeed, the tonearm is on the left side of the turntable.
I searched in the manuel, on the picture the cables of the cartridge are on the outside.
No sound was normal, because the cartridge was turned around.

Very good tip to test the speakers first with a working amp.
I really want to keep the original speakers, so it is a good option to recone them by a professionel.

I will do all the testing and let you all now how it went.

Kind regards Didier

[Ron Rich]

Dider,
If there are no "tears" in the speakers, and/or the cones don't "rub", on the voice coil, there is no advantage to re-conning them-if done correctly, they will sound exactly the same ! Save your money --LOL Ron Rich

[didier]

Hello to all

I've tested the speakers and they work. So I'm not going to do work on them.

The problem is between the stylus and the amp. The cable from the cartridge to the amp is so fragile, it Always break (because it is not good welded).

New question: Can I use different cable, from the cartridge to the plug on the side of the tonearm.

Many thanks

Kind regards

[Ron Rich]

Hi Didier,
Yes if it's the same gauge and type-- I THINK Rowe used 33 gauge ?? Ron Rich

[didier]

Hello Ron

I tested the ampifiers and speakers by connecting an external phonoplayer. The speakers and amp works (after pulling the mute cable out of his socket). Only the speakers don't make a sharp and good noise. Could it be the capacitators that operate the side speakers?

The problem is probably the cartridge and stylus I think.

Thanks for all your help.

Many greets

PS: what does the mute relay do?

[Ron Rich]

Didier,
Many things can cause the lack of "sharpness" --Miss-matched systems is most likely as you have no idea as to the impeadence match you create by substituting external components. The mute relay shuts off the sound-- Will the jukebox play a record with the mute plug removed ? If so, you have found your problem ! Ron Rich