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Re: Newbie w/ '72 Charger Part 2 [message #9386 is a reply to message #9385] |
Sun, 06 April 2008 13:37 |
LesS
Messages: 477 Registered: December 2002
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Senior Member |
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How does the Peavey speaker sound?
If you like the sound, I would say that it is "good enough" for the Kustom amp.
The main question is whether the speaker is designed for lead, PA, or bass. If it is a PA speaker, it will probably have good mids and highs, and you might actually like the sound (you might need to turn up the bass EQ a little.)
I have used the JBL MI115-8A and MI-15 (made for PA and guitar) for bass and I liked the sound until I changed to a real bass speaker. This is in a Kustom K115SC (K100C-6) - has the exact same speaker enclosure size as your Kustom Charger. The MI-15 required an EQ adjustment of +10dB at 80 Hz to almost equal the bass response of a 2x12 with Eminence Basslites.
(Bass speakers that I use in my Kustom cabinets now include Eminence Basslites, Madison Knights, and Peavey TVX.)
As far as power handling, you should be OK. Most modern 15 inch speakers can handle 75 watts.
I am sure you would have already noticed this, but do you have the top cover for the amplifier chassis? - originally it had the schematic on it.
-Les S
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Re: Newbie w/ '72 Charger Part 2 [message #9387 is a reply to message #9386] |
Sun, 06 April 2008 14:39 |
eltumi
Messages: 26 Registered: April 2008 Location: Raleigh, NC
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Junior Member |
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Thanks for the reply LesS!
re: Speaker
I like the sound of it, so far. With the BMT pots having no effect, it's hard to tell where "the settings" are, as far as the pre-amp PCB goes.
re: Schematics
Nope, none on the lid, or taped anywhere else, for that matter.
Updating my previous post, I think I found the main culpret. The mid pot has busted loose. Someone had tried to secure it with a piece of wire through the tab holes and tacked to the shaft on the front. Reading a few previous posts, on the PC5066 board, the mid is a 2K, right? I've tried to track down a 2K, but having difficulties. When I take it to work tomorrow, I'm gonna strap a 1K resistor in its place.
Are there any components I should update while I have it out and my Pace Station is up to 725C?
Thanks for any and all info!!
Michael
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Re: Newbie w/ '72 Charger Part 2 [message #9391 is a reply to message #9390] |
Mon, 07 April 2008 06:45 |
eltumi
Messages: 26 Registered: April 2008 Location: Raleigh, NC
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Junior Member |
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Thanks, Steve!
Yeah, it was the PCB mount that was stumping me. I think we have some older junk analyzers at work that have a 2K that I was going to try. If they are larger, would putting a parallel across be a no no as far as audio is concerned? Also, is it possible that this is taking out my Bass and Treb functionality?
All three legs are broken loose.
Gettin' to the 14 pin IC, without a schematic and my limited knowledge of audio circuitry, what is its purpose? Could this be the cause of my B and T problems?
Thanks,
Michael <Who has been in technical support for over 20 years and knows the TRUE value of experienced knowledge>
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Re: Newbie w/ '72 Charger Part 2 [message #9394 is a reply to message #9393] |
Mon, 07 April 2008 13:31 |
eltumi
Messages: 26 Registered: April 2008 Location: Raleigh, NC
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Junior Member |
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Doin' that would be muchly appreciated!
Work FAX put ATTN: Michael
area code 919 prefix 552 last 3991
(Broken up for webot purposes)
email eltumi at earthlink dot net
Same
On the mid pot, 1 leg and wiper are tied together
and the third leg is completes the circuit. I put
a 1K 1/2 watt in its place and will try it when I get home.
Thanks,
Michael
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Re: Newbie w/ '72 Charger Part 2 [message #9396 is a reply to message #9395] |
Tue, 08 April 2008 09:09 |
eltumi
Messages: 26 Registered: April 2008 Location: Raleigh, NC
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Junior Member |
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I will fax you it on wenseday.
That's cool. I'm not being held up by the lack yet.
Ok, so its wired in a a veriable resistor, I did not have the schematic in front of me when I posted that.
Not a problem. I've encountered a circuit or 2 in my day.
It was class time at work with the guts of the bad one layin' out. We've got a young guy who's goin' to Tech School, so I've been showin' off this "Museum piece". He's a musician as well, so that adds to it.
I'll be doin' more potentiometer searchin' today, so I can replace all 4 at the same time.
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Re: Newbie w/ '72 Charger Part 2 [message #9401 is a reply to message #9400] |
Tue, 08 April 2008 12:24 |
eltumi
Messages: 26 Registered: April 2008 Location: Raleigh, NC
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Junior Member |
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I'm right in the middle of spec-ing some CTS 450 series pots. When I finish my lunch sammiches, I'm going to go do some shaft measurin'. Does anyone know if they are tapered audio or counter clockwise tapered audio? Choices are linear, 10% audio or 10% CCW audio.....
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Re: Newbie w/ '72 Charger Part 2 [message #9414 is a reply to message #9401] |
Tue, 15 April 2008 12:11 |
eltumi
Messages: 26 Registered: April 2008 Location: Raleigh, NC
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Junior Member |
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Steve,
I was never able to find the right pot in a 2K flavor.
Would a 2.5K be OK, or should I parallel a 10K across
the fixed terminals?
Michael
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