Newbie: When to refurbish AR 4x speakers

amplifiers, receivers and loudspeakers
billsea
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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 04 Feb 2019 06:35

The speakers sound pretty good to me. Bass has more defintion. Im wondering if the gaps in the cabinet in the pics i uploaded are leaks. I can easily seal them but i am curious if these are just gaps or actual sources of leak.

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Re: Newbie: When to refurbish AR 4x speakers

Post by Spinner45 » 04 Feb 2019 07:35

billsea wrote:
04 Feb 2019 06:35
The speakers sound pretty good to me. Bass has more defintion. Im wondering if the gaps in the cabinet in the pics i uploaded are leaks. I can easily seal them but i am curious if these are just gaps or actual sources of leak.
Play something with heavy bass, then sniff around those gaps for air coming out.
Or, hold a lighter near them and watch the flame jiggle.
ANY leaks rob bass response.

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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 05 Feb 2019 03:59

So its not my imagination. I thought I felt air thumping from the back along that gap in time with a bass drum kick. It seems my work isnt done yet! Incidentally, I have heard a couple of pops that I worry is my driver bottoming out. I wonder but I am unsure due to lack of experience with this

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Re: Newbie: When to refurbish AR 4x speakers

Post by Spinner45 » 05 Feb 2019 04:22

billsea wrote:
05 Feb 2019 03:59
So its not my imagination. I thought I felt air thumping from the back along that gap in time with a bass drum kick. It seems my work isnt done yet! Incidentally, I have heard a couple of pops that I worry is my driver bottoming out. I wonder but I am unsure due to lack of experience with this
Until you SEAL the cabinet as I mentioned several times, those woofers are at risk of damage.

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Re: Newbie: When to refurbish AR 4x speakers

Post by phivates » 05 Feb 2019 14:14

Your AR 4x woofers have maybe 5/8" of linear excursion. They are not subwoofers. By all means follow Spinner's advice, and back off when you hear a pop.

billsea
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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 06 Feb 2019 05:03

phivates wrote:
05 Feb 2019 14:14
Your AR 4x woofers have maybe 5/8" of linear excursion. They are not subwoofers. By all means follow Spinner's advice, and back off when you hear a pop.
Duly noted. I did back off right away. Fear not, they are still working great. I don't even know how to incorporate a sub into my system. Anybody have an audio equipment 'bible' they would recommend?
I will seal the cabs before I move on. Boy, positioning really makes a difference on the sound quality. I bought a pretty little (not so little) 55 watt Yamaha receiver circa 1977-1980 I plan on using. My 100 watt Realistic is limping....

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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 06 Feb 2019 05:07

Look at this nifty little radio I happened upon today. It sounds great! Great reception, too. Only minuses are a few scratches and the display light is out. Flea market find. Only $25. Just a random excursion from the thread. It'll be nice to have a radio aside from my system as the layout of my pLace is less than great
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Re: Newbie: When to refurbish AR 4x speakers

Post by Spinner45 » 06 Feb 2019 06:01

billsea wrote:
06 Feb 2019 05:07
Look at this nifty little radio I happened upon today. It sounds great! Great reception, too. Only minuses are a few scratches and the display light is out. Flea market find. Only $25. Just a random excursion from the thread. It'll be nice to have a radio aside from my system as the layout of my pLace is less than great
That Zenith dates to around 1961, model G730, chassis 7C05, and I don't think it has a dial lamp in that model.

billsea
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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 06 Feb 2019 06:18

You are correct sir! It has a W affix as well. I just polished it up a little with some lemon oil and toothbrush. Oh, yeah, sealed my 4x cabinet as well. I'll post a pic of the label. Picking some good classical signals on it. I see no terminal around the G (for ground, I assume) screw on the back.
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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 06 Feb 2019 06:19

I'm guessing that black stamp is the July 23, of 1961? You're pretty good!

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Re: Newbie: When to refurbish AR 4x speakers

Post by phivates » 06 Feb 2019 17:13

An audio bible is a whole thread unto itself. More like a whole library. New topic!

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Re: Newbie: When to refurbish AR 4x speakers

Post by Spinner45 » 06 Feb 2019 17:21

billsea wrote:
06 Feb 2019 06:19
I'm guessing that black stamp is the July 23, of 1961? You're pretty good!
After being in the service business for over 45 years and working on just about everything in consumer electronics, naturally experience allows me to know things.
All I have to do is LOOK at something now and experience kicks in.

billsea
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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 06 Feb 2019 17:39

Makes sense.

billsea
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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 07 Feb 2019 22:07

Spinner45 wrote:
05 Feb 2019 04:22
billsea wrote:
05 Feb 2019 03:59
So its not my imagination. I thought I felt air thumping from the back along that gap in time with a bass drum kick. It seems my work isnt done yet! Incidentally, I have heard a couple of pops that I worry is my driver bottoming out. I wonder but I am unsure due to lack of experience with this
Until you SEAL the cabinet as I mentioned several times, those woofers are at risk of damage.
Well I sealed the front and back cabinet, the rear panel with the tweeter adjustment, as well as a bit of a tear that extended unnoticed beyond my original patch. No delayed woofer cone return but wow- the bass has ALOT more presence. I never questioned the advice of members but to hear the difference is impressive.

billsea
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Re: Newbie: When to refurbish AR 4x speakers

Post by billsea » 10 Feb 2019 01:57

Tweeter question here. Since the restore I notice a noise/crackle frkm my tweeter. What are the potential causes for this?

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